diff --git a/algebricks/algebricks-core/src/main/java/edu/uci/ics/hyracks/algebricks/core/algebra/base/PhysicalOperatorTag.java b/algebricks/algebricks-core/src/main/java/edu/uci/ics/hyracks/algebricks/core/algebra/base/PhysicalOperatorTag.java
index a969372..32cfb9a 100644
--- a/algebricks/algebricks-core/src/main/java/edu/uci/ics/hyracks/algebricks/core/algebra/base/PhysicalOperatorTag.java
+++ b/algebricks/algebricks-core/src/main/java/edu/uci/ics/hyracks/algebricks/core/algebra/base/PhysicalOperatorTag.java
@@ -7,6 +7,7 @@
     BTREE_SEARCH,
     STATS,
     DATASOURCE_SCAN,
+    DISTRIBUTE_RESULT,
     EMPTY_TUPLE_SOURCE,
     EXTERNAL_GROUP_BY,
     IN_MEMORY_HASH_JOIN,
diff --git a/algebricks/algebricks-core/src/main/java/edu/uci/ics/hyracks/algebricks/core/algebra/metadata/IMetadataProvider.java b/algebricks/algebricks-core/src/main/java/edu/uci/ics/hyracks/algebricks/core/algebra/metadata/IMetadataProvider.java
index 899b633..82187e3 100644
--- a/algebricks/algebricks-core/src/main/java/edu/uci/ics/hyracks/algebricks/core/algebra/metadata/IMetadataProvider.java
+++ b/algebricks/algebricks-core/src/main/java/edu/uci/ics/hyracks/algebricks/core/algebra/metadata/IMetadataProvider.java
@@ -51,6 +51,10 @@
             int[] printColumns, IPrinterFactory[] printerFactories, RecordDescriptor inputDesc)
             throws AlgebricksException;
 
+    public Pair<IOperatorDescriptor, AlgebricksPartitionConstraint> getResultHandleRuntime(IDataSink sink,
+            int[] printColumns, IPrinterFactory[] printerFactories, RecordDescriptor inputDesc, boolean ordered,
+            JobSpecification spec) throws AlgebricksException;
+
     public Pair<IOperatorDescriptor, AlgebricksPartitionConstraint> getWriteResultRuntime(IDataSource<S> dataSource,
             IOperatorSchema propagatedSchema, List<LogicalVariable> keys, LogicalVariable payLoadVar,
             JobGenContext context, JobSpecification jobSpec) throws AlgebricksException;
diff --git a/algebricks/algebricks-core/src/main/java/edu/uci/ics/hyracks/algebricks/core/algebra/operators/physical/DistributeResultPOperator.java b/algebricks/algebricks-core/src/main/java/edu/uci/ics/hyracks/algebricks/core/algebra/operators/physical/DistributeResultPOperator.java
new file mode 100644
index 0000000..d835da4
--- /dev/null
+++ b/algebricks/algebricks-core/src/main/java/edu/uci/ics/hyracks/algebricks/core/algebra/operators/physical/DistributeResultPOperator.java
@@ -0,0 +1,110 @@
+/*
+ * Copyright 2009-2010 by The Regents of the University of California
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * you may obtain a copy of the License from
+ * 
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ * 
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+package edu.uci.ics.hyracks.algebricks.core.algebra.operators.physical;
+
+import org.apache.commons.lang3.mutable.Mutable;
+
+import edu.uci.ics.hyracks.algebricks.common.constraints.AlgebricksPartitionConstraint;
+import edu.uci.ics.hyracks.algebricks.common.exceptions.AlgebricksException;
+import edu.uci.ics.hyracks.algebricks.common.exceptions.NotImplementedException;
+import edu.uci.ics.hyracks.algebricks.common.utils.Pair;
+import edu.uci.ics.hyracks.algebricks.core.algebra.base.IHyracksJobBuilder;
+import edu.uci.ics.hyracks.algebricks.core.algebra.base.ILogicalExpression;
+import edu.uci.ics.hyracks.algebricks.core.algebra.base.ILogicalOperator;
+import edu.uci.ics.hyracks.algebricks.core.algebra.base.IOptimizationContext;
+import edu.uci.ics.hyracks.algebricks.core.algebra.base.LogicalExpressionTag;
+import edu.uci.ics.hyracks.algebricks.core.algebra.base.LogicalVariable;
+import edu.uci.ics.hyracks.algebricks.core.algebra.base.PhysicalOperatorTag;
+import edu.uci.ics.hyracks.algebricks.core.algebra.expressions.VariableReferenceExpression;
+import edu.uci.ics.hyracks.algebricks.core.algebra.metadata.IDataSink;
+import edu.uci.ics.hyracks.algebricks.core.algebra.metadata.IMetadataProvider;
+import edu.uci.ics.hyracks.algebricks.core.algebra.operators.logical.IOperatorSchema;
+import edu.uci.ics.hyracks.algebricks.core.algebra.operators.logical.WriteOperator;
+import edu.uci.ics.hyracks.algebricks.core.algebra.properties.IPartitioningProperty;
+import edu.uci.ics.hyracks.algebricks.core.algebra.properties.IPartitioningRequirementsCoordinator;
+import edu.uci.ics.hyracks.algebricks.core.algebra.properties.IPhysicalPropertiesVector;
+import edu.uci.ics.hyracks.algebricks.core.algebra.properties.PhysicalRequirements;
+import edu.uci.ics.hyracks.algebricks.core.algebra.properties.StructuralPropertiesVector;
+import edu.uci.ics.hyracks.algebricks.core.jobgen.impl.JobGenContext;
+import edu.uci.ics.hyracks.algebricks.core.jobgen.impl.JobGenHelper;
+import edu.uci.ics.hyracks.algebricks.data.IPrinterFactory;
+import edu.uci.ics.hyracks.api.dataflow.IOperatorDescriptor;
+import edu.uci.ics.hyracks.api.dataflow.value.RecordDescriptor;
+import edu.uci.ics.hyracks.api.job.JobSpecification;
+
+public class DistributeResultPOperator extends AbstractPhysicalOperator {
+
+    @Override
+    public PhysicalOperatorTag getOperatorTag() {
+        return PhysicalOperatorTag.DISTRIBUTE_RESULT;
+    }
+
+    @Override
+    public boolean isMicroOperator() {
+        return false;
+    }
+
+    @Override
+    public void computeDeliveredProperties(ILogicalOperator op, IOptimizationContext context) {
+        ILogicalOperator op2 = op.getInputs().get(0).getValue();
+        deliveredProperties = op2.getDeliveredPhysicalProperties().clone();
+    }
+
+    @Override
+    public PhysicalRequirements getRequiredPropertiesForChildren(ILogicalOperator op,
+            IPhysicalPropertiesVector reqdByParent) {
+        WriteOperator write = (WriteOperator) op;
+        IDataSink sink = write.getDataSink();
+        IPartitioningProperty pp = sink.getPartitioningProperty();
+        StructuralPropertiesVector[] r = new StructuralPropertiesVector[] { new StructuralPropertiesVector(pp, null) };
+        return new PhysicalRequirements(r, IPartitioningRequirementsCoordinator.NO_COORDINATION);
+    }
+
+    @SuppressWarnings({ "rawtypes", "unchecked" })
+    @Override
+    public void contributeRuntimeOperator(IHyracksJobBuilder builder, JobGenContext context, ILogicalOperator op,
+            IOperatorSchema propagatedSchema, IOperatorSchema[] inputSchemas, IOperatorSchema outerPlanSchema)
+            throws AlgebricksException {
+        WriteOperator resultOp = (WriteOperator) op;
+        IMetadataProvider mp = context.getMetadataProvider();
+
+        JobSpecification spec = builder.getJobSpec();
+
+        int[] columns = new int[resultOp.getExpressions().size()];
+        int i = 0;
+        for (Mutable<ILogicalExpression> exprRef : resultOp.getExpressions()) {
+            ILogicalExpression expr = exprRef.getValue();
+            if (expr.getExpressionTag() != LogicalExpressionTag.VARIABLE) {
+                throw new NotImplementedException("Only writing variable expressions is supported.");
+            }
+            VariableReferenceExpression varRef = (VariableReferenceExpression) expr;
+            LogicalVariable v = varRef.getVariableReference();
+            columns[i++] = inputSchemas[0].findVariable(v);
+        }
+        RecordDescriptor inputDesc = JobGenHelper.mkRecordDescriptor(
+                context.getTypeEnvironment(op.getInputs().get(0).getValue()), inputSchemas[0], context);
+
+        IPrinterFactory[] pf = JobGenHelper.mkPrinterFactories(inputSchemas[0], context.getTypeEnvironment(op),
+                context, columns);
+
+        Pair<IOperatorDescriptor, AlgebricksPartitionConstraint> runtimeAndConstraints = mp.getResultHandleRuntime(
+                resultOp.getDataSink(), columns, pf, inputDesc, false, spec);
+
+        builder.contributeHyracksOperator(resultOp, runtimeAndConstraints.first);
+        builder.contributeAlgebricksPartitionConstraint(runtimeAndConstraints.first, runtimeAndConstraints.second);
+        ILogicalOperator src = resultOp.getInputs().get(0).getValue();
+        builder.contributeGraphEdge(src, 0, resultOp, 0);
+    }
+}
diff --git a/algebricks/algebricks-data/src/main/java/edu/uci/ics/hyracks/algebricks/data/IResultSerializerFactoryProvider.java b/algebricks/algebricks-data/src/main/java/edu/uci/ics/hyracks/algebricks/data/IResultSerializerFactoryProvider.java
new file mode 100644
index 0000000..a6ebf01
--- /dev/null
+++ b/algebricks/algebricks-data/src/main/java/edu/uci/ics/hyracks/algebricks/data/IResultSerializerFactoryProvider.java
@@ -0,0 +1,40 @@
+/*
+ * Copyright 2009-2010 by The Regents of the University of California
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * you may obtain a copy of the License from
+ * 
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ * 
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+package edu.uci.ics.hyracks.algebricks.data;
+
+import java.io.Serializable;
+
+import edu.uci.ics.hyracks.algebricks.data.IAWriterFactory;
+import edu.uci.ics.hyracks.algebricks.data.IPrinterFactory;
+import edu.uci.ics.hyracks.api.dataflow.value.IResultSerializerFactory;
+import edu.uci.ics.hyracks.api.dataflow.value.RecordDescriptor;
+
+public interface IResultSerializerFactoryProvider extends Serializable {
+    /**
+     * Returns a result serializer factory
+     * 
+     * @param fields
+     *            - A position of the fields in the order it should be written in the output.
+     * @param printerFactories
+     *            - A printer factory array to print the tuple containing different fields.
+     * @param writerFactory
+     *            - A writer factory to write the serialized data to the print stream.
+     * @param inputRecordDesc
+     *            - The record descriptor describing the input frame to be serialized.
+     * @return A new instance of result serialized appender.
+     */
+    public IResultSerializerFactory getAqlResultSerializerFactoryProvider(int[] fields,
+            IPrinterFactory[] printerFactories, IAWriterFactory writerFactory, RecordDescriptor inputRecordDesc);
+}
diff --git a/algebricks/algebricks-examples/piglet-example/src/main/java/edu/uci/ics/hyracks/algebricks/examples/piglet/metadata/PigletMetadataProvider.java b/algebricks/algebricks-examples/piglet-example/src/main/java/edu/uci/ics/hyracks/algebricks/examples/piglet/metadata/PigletMetadataProvider.java
index d678803..0efe0ae 100644
--- a/algebricks/algebricks-examples/piglet-example/src/main/java/edu/uci/ics/hyracks/algebricks/examples/piglet/metadata/PigletMetadataProvider.java
+++ b/algebricks/algebricks-examples/piglet-example/src/main/java/edu/uci/ics/hyracks/algebricks/examples/piglet/metadata/PigletMetadataProvider.java
@@ -62,13 +62,10 @@
 
     @SuppressWarnings("unchecked")
     @Override
-	public Pair<IOperatorDescriptor, AlgebricksPartitionConstraint> getScannerRuntime(
-			IDataSource<String> dataSource,
-			List<LogicalVariable> scanVariables,
-			List<LogicalVariable> projectVariables, boolean projectPushed,
-			IOperatorSchema opSchema, IVariableTypeEnvironment typeEnv,
-			JobGenContext context, JobSpecification jobSpec)
-			throws AlgebricksException {
+    public Pair<IOperatorDescriptor, AlgebricksPartitionConstraint> getScannerRuntime(IDataSource<String> dataSource,
+            List<LogicalVariable> scanVariables, List<LogicalVariable> projectVariables, boolean projectPushed,
+            IOperatorSchema opSchema, IVariableTypeEnvironment typeEnv, JobGenContext context, JobSpecification jobSpec)
+            throws AlgebricksException {
         PigletFileDataSource ds = (PigletFileDataSource) dataSource;
 
         FileSplit[] fileSplits = ds.getFileSplits();
@@ -139,6 +136,13 @@
     }
 
     @Override
+    public Pair<IOperatorDescriptor, AlgebricksPartitionConstraint> getResultHandleRuntime(IDataSink sink,
+            int[] printColumns, IPrinterFactory[] printerFactories, RecordDescriptor inputDesc, boolean ordered,
+            JobSpecification spec) throws AlgebricksException {
+        return null;
+    }
+
+    @Override
     public IDataSourceIndex<String, String> findDataSourceIndex(String indexId, String dataSourceId)
             throws AlgebricksException {
         return null;
@@ -187,7 +191,7 @@
         // TODO Auto-generated method stub
         return null;
     }
-    
+
     @Override
     public IFunctionInfo lookupFunction(FunctionIdentifier fid) {
         return FN_MAP.get(fid);
diff --git a/algebricks/algebricks-rewriter/src/main/java/edu/uci/ics/hyracks/algebricks/rewriter/rules/SetAlgebricksPhysicalOperatorsRule.java b/algebricks/algebricks-rewriter/src/main/java/edu/uci/ics/hyracks/algebricks/rewriter/rules/SetAlgebricksPhysicalOperatorsRule.java
index 38cf96e..666f01a 100644
--- a/algebricks/algebricks-rewriter/src/main/java/edu/uci/ics/hyracks/algebricks/rewriter/rules/SetAlgebricksPhysicalOperatorsRule.java
+++ b/algebricks/algebricks-rewriter/src/main/java/edu/uci/ics/hyracks/algebricks/rewriter/rules/SetAlgebricksPhysicalOperatorsRule.java
@@ -38,6 +38,7 @@
 import edu.uci.ics.hyracks.algebricks.core.algebra.operators.physical.AggregatePOperator;
 import edu.uci.ics.hyracks.algebricks.core.algebra.operators.physical.AssignPOperator;
 import edu.uci.ics.hyracks.algebricks.core.algebra.operators.physical.DataSourceScanPOperator;
+import edu.uci.ics.hyracks.algebricks.core.algebra.operators.physical.DistributeResultPOperator;
 import edu.uci.ics.hyracks.algebricks.core.algebra.operators.physical.EmptyTupleSourcePOperator;
 import edu.uci.ics.hyracks.algebricks.core.algebra.operators.physical.ExternalGroupByPOperator;
 import edu.uci.ics.hyracks.algebricks.core.algebra.operators.physical.InMemoryStableSortPOperator;
@@ -50,7 +51,6 @@
 import edu.uci.ics.hyracks.algebricks.core.algebra.operators.physical.ReplicatePOperator;
 import edu.uci.ics.hyracks.algebricks.core.algebra.operators.physical.RunningAggregatePOperator;
 import edu.uci.ics.hyracks.algebricks.core.algebra.operators.physical.SinkPOperator;
-import edu.uci.ics.hyracks.algebricks.core.algebra.operators.physical.SinkWritePOperator;
 import edu.uci.ics.hyracks.algebricks.core.algebra.operators.physical.StableSortPOperator;
 import edu.uci.ics.hyracks.algebricks.core.algebra.operators.physical.StreamDiePOperator;
 import edu.uci.ics.hyracks.algebricks.core.algebra.operators.physical.StreamLimitPOperator;
@@ -242,7 +242,7 @@
                     break;
                 }
                 case WRITE: {
-                    op.setPhysicalOperator(new SinkWritePOperator());
+                    op.setPhysicalOperator(new DistributeResultPOperator());
                     break;
                 }
                 case WRITE_RESULT: {
@@ -267,8 +267,8 @@
                     List<LogicalVariable> secondaryKeys = new ArrayList<LogicalVariable>();
                     getKeys(opInsDel.getPrimaryKeyExpressions(), primaryKeys);
                     getKeys(opInsDel.getSecondaryKeyExpressions(), secondaryKeys);
-                    op.setPhysicalOperator(new IndexInsertDeletePOperator(primaryKeys, secondaryKeys, 
-                    		opInsDel.getFilterExpression(), opInsDel.getDataSourceIndex()));
+                    op.setPhysicalOperator(new IndexInsertDeletePOperator(primaryKeys, secondaryKeys, opInsDel
+                            .getFilterExpression(), opInsDel.getDataSourceIndex()));
                     break;
                 }
                 case SINK: {
diff --git a/algebricks/algebricks-runtime/src/main/java/edu/uci/ics/hyracks/algebricks/runtime/operators/std/SinkWriterRuntime.java b/algebricks/algebricks-runtime/src/main/java/edu/uci/ics/hyracks/algebricks/runtime/operators/std/SinkWriterRuntime.java
index 148f087..28597a7 100644
--- a/algebricks/algebricks-runtime/src/main/java/edu/uci/ics/hyracks/algebricks/runtime/operators/std/SinkWriterRuntime.java
+++ b/algebricks/algebricks-runtime/src/main/java/edu/uci/ics/hyracks/algebricks/runtime/operators/std/SinkWriterRuntime.java
@@ -70,6 +70,7 @@
         for (int t = 0; t < nTuple; t++) {
             try {
                 writer.printTuple(tAccess, t);
+                printStream.println();
             } catch (AlgebricksException ae) {
                 throw new HyracksDataException(ae);
             }
diff --git a/algebricks/algebricks-runtime/src/main/java/edu/uci/ics/hyracks/algebricks/runtime/writers/PrinterBasedWriterFactory.java b/algebricks/algebricks-runtime/src/main/java/edu/uci/ics/hyracks/algebricks/runtime/writers/PrinterBasedWriterFactory.java
index 9c53241..762e133 100644
--- a/algebricks/algebricks-runtime/src/main/java/edu/uci/ics/hyracks/algebricks/runtime/writers/PrinterBasedWriterFactory.java
+++ b/algebricks/algebricks-runtime/src/main/java/edu/uci/ics/hyracks/algebricks/runtime/writers/PrinterBasedWriterFactory.java
@@ -47,7 +47,6 @@
                     }
                     printers[i].print(tAccess.getBuffer().array(), fldStart, fldLen, printStream);
                 }
-                printStream.println();
             }
         };
     }
diff --git a/hivesterix/src/main/java/edu/uci/ics/hivesterix/runtime/jobgen/HiveMetaDataProvider.java b/hivesterix/src/main/java/edu/uci/ics/hivesterix/runtime/jobgen/HiveMetaDataProvider.java
index 5782703..fe24bc9 100644
--- a/hivesterix/src/main/java/edu/uci/ics/hivesterix/runtime/jobgen/HiveMetaDataProvider.java
+++ b/hivesterix/src/main/java/edu/uci/ics/hivesterix/runtime/jobgen/HiveMetaDataProvider.java
@@ -121,6 +121,13 @@
 	}
 
 	@Override
+	public Pair<IOperatorDescriptor, AlgebricksPartitionConstraint> getResultHandleRuntime(IDataSink sink,
+			int[] printColumns, IPrinterFactory[] printerFactories, RecordDescriptor inputDesc, boolean ordered,
+			JobSpecification spec) throws AlgebricksException {
+		return null;
+	}
+
+	@Override
 	public Pair<IOperatorDescriptor, AlgebricksPartitionConstraint> getIndexInsertRuntime(
 			IDataSourceIndex<T, S> dataSource,
 			IOperatorSchema propagatedSchema, IOperatorSchema[] inputSchemas,
diff --git a/hyracks/hyracks-api/src/main/java/edu/uci/ics/hyracks/api/channels/IInputChannel.java b/hyracks/hyracks-api/src/main/java/edu/uci/ics/hyracks/api/channels/IInputChannel.java
index a8f2fda..a4f0b29 100644
--- a/hyracks/hyracks-api/src/main/java/edu/uci/ics/hyracks/api/channels/IInputChannel.java
+++ b/hyracks/hyracks-api/src/main/java/edu/uci/ics/hyracks/api/channels/IInputChannel.java
@@ -16,7 +16,7 @@
 
 import java.nio.ByteBuffer;
 
-import edu.uci.ics.hyracks.api.context.IHyracksTaskContext;
+import edu.uci.ics.hyracks.api.context.IHyracksCommonContext;
 import edu.uci.ics.hyracks.api.exceptions.HyracksDataException;
 
 public interface IInputChannel {
@@ -30,7 +30,7 @@
 
     public void recycleBuffer(ByteBuffer buffer);
 
-    public void open(IHyracksTaskContext ctx) throws HyracksDataException;
+    public void open(IHyracksCommonContext ctx) throws HyracksDataException;
 
     public void close() throws HyracksDataException;
 }
\ No newline at end of file
diff --git a/hyracks/hyracks-api/src/main/java/edu/uci/ics/hyracks/api/client/HyracksClientInterfaceFunctions.java b/hyracks/hyracks-api/src/main/java/edu/uci/ics/hyracks/api/client/HyracksClientInterfaceFunctions.java
index e34e60d..cd2b698 100644
--- a/hyracks/hyracks-api/src/main/java/edu/uci/ics/hyracks/api/client/HyracksClientInterfaceFunctions.java
+++ b/hyracks/hyracks-api/src/main/java/edu/uci/ics/hyracks/api/client/HyracksClientInterfaceFunctions.java
@@ -17,6 +17,8 @@
 import java.io.Serializable;
 import java.util.EnumSet;
 
+import edu.uci.ics.hyracks.api.dataset.DatasetDirectoryRecord;
+import edu.uci.ics.hyracks.api.dataset.ResultSetId;
 import edu.uci.ics.hyracks.api.job.JobFlag;
 import edu.uci.ics.hyracks.api.job.JobId;
 
@@ -30,6 +32,10 @@
         CREATE_JOB,
         GET_JOB_STATUS,
         START_JOB,
+        GET_DATASET_DIRECTORY_SERIVICE_INFO,
+        GET_DATASET_RESULT_STATUS,
+        GET_DATASET_RECORD_DESCRIPTOR,
+        GET_DATASET_RESULT_LOCATIONS,
         WAIT_FOR_COMPLETION,
         GET_NODE_CONTROLLERS_INFO
     }
@@ -156,6 +162,74 @@
         }
     }
 
+    public static class GetDatasetDirectoryServiceInfoFunction extends Function {
+        private static final long serialVersionUID = 1L;
+
+        @Override
+        public FunctionId getFunctionId() {
+            return FunctionId.GET_DATASET_DIRECTORY_SERIVICE_INFO;
+        }
+    }
+
+    public static class GetDatasetResultStatusFunction extends Function {
+        private static final long serialVersionUID = 1L;
+
+        private final JobId jobId;
+
+        private final ResultSetId rsId;
+
+        public GetDatasetResultStatusFunction(JobId jobId, ResultSetId rsId) {
+            this.jobId = jobId;
+            this.rsId = rsId;
+        }
+
+        @Override
+        public FunctionId getFunctionId() {
+            return FunctionId.GET_DATASET_RESULT_STATUS;
+        }
+
+        public JobId getJobId() {
+            return jobId;
+        }
+
+        public ResultSetId getResultSetId() {
+            return rsId;
+        }
+    }
+
+    public static class GetDatasetResultLocationsFunction extends Function {
+        private static final long serialVersionUID = 1L;
+
+        private final JobId jobId;
+
+        private final ResultSetId rsId;
+
+        private final DatasetDirectoryRecord[] knownRecords;
+
+        public GetDatasetResultLocationsFunction(JobId jobId, ResultSetId rsId, DatasetDirectoryRecord[] knownRecords) {
+            this.jobId = jobId;
+            this.rsId = rsId;
+            this.knownRecords = knownRecords;
+        }
+
+        @Override
+        public FunctionId getFunctionId() {
+            return FunctionId.GET_DATASET_RESULT_LOCATIONS;
+        }
+
+        public JobId getJobId() {
+            return jobId;
+        }
+
+        public ResultSetId getResultSetId() {
+            return rsId;
+        }
+
+        public DatasetDirectoryRecord[] getKnownRecords() {
+            return knownRecords;
+        }
+    }
+
     public static class WaitForCompletionFunction extends Function {
         private static final long serialVersionUID = 1L;
 
diff --git a/hyracks/hyracks-api/src/main/java/edu/uci/ics/hyracks/api/client/HyracksClientInterfaceRemoteProxy.java b/hyracks/hyracks-api/src/main/java/edu/uci/ics/hyracks/api/client/HyracksClientInterfaceRemoteProxy.java
index 4c06d42..2ab42c0 100644
--- a/hyracks/hyracks-api/src/main/java/edu/uci/ics/hyracks/api/client/HyracksClientInterfaceRemoteProxy.java
+++ b/hyracks/hyracks-api/src/main/java/edu/uci/ics/hyracks/api/client/HyracksClientInterfaceRemoteProxy.java
@@ -17,6 +17,7 @@
 import java.util.EnumSet;
 import java.util.Map;
 
+import edu.uci.ics.hyracks.api.comm.NetworkAddress;
 import edu.uci.ics.hyracks.api.job.JobFlag;
 import edu.uci.ics.hyracks.api.job.JobId;
 import edu.uci.ics.hyracks.api.job.JobStatus;
@@ -76,6 +77,12 @@
     }
 
     @Override
+    public NetworkAddress getDatasetDirectoryServiceInfo() throws Exception {
+        HyracksClientInterfaceFunctions.GetDatasetDirectoryServiceInfoFunction gddsf = new HyracksClientInterfaceFunctions.GetDatasetDirectoryServiceInfoFunction();
+        return (NetworkAddress) rpci.call(ipcHandle, gddsf);
+    }
+
+    @Override
     public void waitForCompletion(JobId jobId) throws Exception {
         HyracksClientInterfaceFunctions.WaitForCompletionFunction wfcf = new HyracksClientInterfaceFunctions.WaitForCompletionFunction(
                 jobId);
diff --git a/hyracks/hyracks-api/src/main/java/edu/uci/ics/hyracks/api/client/HyracksConnection.java b/hyracks/hyracks-api/src/main/java/edu/uci/ics/hyracks/api/client/HyracksConnection.java
index 227524c..e0fafb0 100644
--- a/hyracks/hyracks-api/src/main/java/edu/uci/ics/hyracks/api/client/HyracksConnection.java
+++ b/hyracks/hyracks-api/src/main/java/edu/uci/ics/hyracks/api/client/HyracksConnection.java
@@ -26,6 +26,7 @@
 import org.apache.http.impl.client.DefaultHttpClient;
 
 import edu.uci.ics.hyracks.api.client.impl.JobSpecificationActivityClusterGraphGeneratorFactory;
+import edu.uci.ics.hyracks.api.comm.NetworkAddress;
 import edu.uci.ics.hyracks.api.exceptions.HyracksException;
 import edu.uci.ics.hyracks.api.job.IActivityClusterGraphGeneratorFactory;
 import edu.uci.ics.hyracks.api.job.JobFlag;
@@ -118,6 +119,10 @@
         return hci.startJob(appName, JavaSerializationUtils.serialize(acggf), jobFlags);
     }
 
+    public NetworkAddress getDatasetDirectoryServiceInfo() throws Exception {
+        return hci.getDatasetDirectoryServiceInfo();
+    }
+
     @Override
     public void waitForCompletion(JobId jobId) throws Exception {
         hci.waitForCompletion(jobId);
diff --git a/hyracks/hyracks-api/src/main/java/edu/uci/ics/hyracks/api/client/IHyracksClientConnection.java b/hyracks/hyracks-api/src/main/java/edu/uci/ics/hyracks/api/client/IHyracksClientConnection.java
index bdbb544..6333c22 100644
--- a/hyracks/hyracks-api/src/main/java/edu/uci/ics/hyracks/api/client/IHyracksClientConnection.java
+++ b/hyracks/hyracks-api/src/main/java/edu/uci/ics/hyracks/api/client/IHyracksClientConnection.java
@@ -18,6 +18,7 @@
 import java.util.EnumSet;
 import java.util.Map;
 
+import edu.uci.ics.hyracks.api.comm.NetworkAddress;
 import edu.uci.ics.hyracks.api.job.IActivityClusterGraphGeneratorFactory;
 import edu.uci.ics.hyracks.api.job.JobFlag;
 import edu.uci.ics.hyracks.api.job.JobId;
@@ -100,6 +101,14 @@
             throws Exception;
 
     /**
+     * Gets the IP Address and port for the DatasetDirectoryService wrapped in NetworkAddress
+     * 
+     * @return {@link NetworkAddress}
+     * @throws Exception
+     */
+    public NetworkAddress getDatasetDirectoryServiceInfo() throws Exception;
+
+    /**
      * Waits until the specified job has completed, either successfully or has
      * encountered a permanent failure.
      * 
@@ -123,4 +132,4 @@
      * @throws Exception
      */
     public ClusterTopology getClusterTopology() throws Exception;
-}
\ No newline at end of file
+}
diff --git a/hyracks/hyracks-api/src/main/java/edu/uci/ics/hyracks/api/client/IHyracksClientInterface.java b/hyracks/hyracks-api/src/main/java/edu/uci/ics/hyracks/api/client/IHyracksClientInterface.java
index ef5906e..22b0a8f 100644
--- a/hyracks/hyracks-api/src/main/java/edu/uci/ics/hyracks/api/client/IHyracksClientInterface.java
+++ b/hyracks/hyracks-api/src/main/java/edu/uci/ics/hyracks/api/client/IHyracksClientInterface.java
@@ -17,6 +17,7 @@
 import java.util.EnumSet;
 import java.util.Map;
 
+import edu.uci.ics.hyracks.api.comm.NetworkAddress;
 import edu.uci.ics.hyracks.api.job.JobFlag;
 import edu.uci.ics.hyracks.api.job.JobId;
 import edu.uci.ics.hyracks.api.job.JobStatus;
@@ -35,6 +36,8 @@
 
     public JobId startJob(String appName, byte[] acggfBytes, EnumSet<JobFlag> jobFlags) throws Exception;
 
+    public NetworkAddress getDatasetDirectoryServiceInfo() throws Exception;
+
     public void waitForCompletion(JobId jobId) throws Exception;
 
     public Map<String, NodeControllerInfo> getNodeControllersInfo() throws Exception;
diff --git a/hyracks/hyracks-api/src/main/java/edu/uci/ics/hyracks/api/client/NodeControllerInfo.java b/hyracks/hyracks-api/src/main/java/edu/uci/ics/hyracks/api/client/NodeControllerInfo.java
index fd9218a..73b5488 100644
--- a/hyracks/hyracks-api/src/main/java/edu/uci/ics/hyracks/api/client/NodeControllerInfo.java
+++ b/hyracks/hyracks-api/src/main/java/edu/uci/ics/hyracks/api/client/NodeControllerInfo.java
@@ -27,10 +27,14 @@
 
     private final NetworkAddress netAddress;
 
-    public NodeControllerInfo(String nodeId, NodeStatus status, NetworkAddress netAddress) {
+    private final NetworkAddress datasetNetworkAddress;
+
+    public NodeControllerInfo(String nodeId, NodeStatus status, NetworkAddress netAddress,
+            NetworkAddress datasetNetworkAddress) {
         this.nodeId = nodeId;
         this.status = status;
         this.netAddress = netAddress;
+        this.datasetNetworkAddress = datasetNetworkAddress;
     }
 
     public String getNodeId() {
@@ -44,4 +48,8 @@
     public NetworkAddress getNetworkAddress() {
         return netAddress;
     }
+
+    public NetworkAddress getDatasetNetworkAddress() {
+        return datasetNetworkAddress;
+    }
 }
\ No newline at end of file
diff --git a/hyracks/hyracks-api/src/main/java/edu/uci/ics/hyracks/api/context/IHyracksTaskContext.java b/hyracks/hyracks-api/src/main/java/edu/uci/ics/hyracks/api/context/IHyracksTaskContext.java
index e964d66..a2ee977 100644
--- a/hyracks/hyracks-api/src/main/java/edu/uci/ics/hyracks/api/context/IHyracksTaskContext.java
+++ b/hyracks/hyracks-api/src/main/java/edu/uci/ics/hyracks/api/context/IHyracksTaskContext.java
@@ -15,6 +15,7 @@
 package edu.uci.ics.hyracks.api.context;
 
 import edu.uci.ics.hyracks.api.dataflow.TaskAttemptId;
+import edu.uci.ics.hyracks.api.dataset.IDatasetPartitionManager;
 import edu.uci.ics.hyracks.api.io.IWorkspaceFileFactory;
 import edu.uci.ics.hyracks.api.job.IOperatorEnvironment;
 import edu.uci.ics.hyracks.api.job.profiling.counters.ICounterContext;
@@ -28,5 +29,7 @@
 
     public ICounterContext getCounterContext();
 
+    public IDatasetPartitionManager getDatasetPartitionManager();
+
     public void sendApplicationMessageToCC(byte[] message, String nodeId) throws Exception;
 }
\ No newline at end of file
diff --git a/hyracks/hyracks-api/src/main/java/edu/uci/ics/hyracks/api/dataflow/value/IResultSerializer.java b/hyracks/hyracks-api/src/main/java/edu/uci/ics/hyracks/api/dataflow/value/IResultSerializer.java
new file mode 100644
index 0000000..ba2ff9a
--- /dev/null
+++ b/hyracks/hyracks-api/src/main/java/edu/uci/ics/hyracks/api/dataflow/value/IResultSerializer.java
@@ -0,0 +1,38 @@
+/*
+ * Copyright 2009-2010 by The Regents of the University of California
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * you may obtain a copy of the License from
+ * 
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ * 
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+package edu.uci.ics.hyracks.api.dataflow.value;
+
+import java.io.Serializable;
+
+import edu.uci.ics.hyracks.api.comm.IFrameTupleAccessor;
+import edu.uci.ics.hyracks.api.exceptions.HyracksDataException;
+
+public interface IResultSerializer extends Serializable {
+    /**
+     * Initializes the serializer.
+     */
+    public void init() throws HyracksDataException;
+
+    /**
+     * Method to serialize the result and append it to the provided output stream
+     * 
+     * @param tAccess
+     *            - A frame tuple accessor object that contains the original data to be serialized
+     * @param tIdx
+     *            - Index of the tuple that should be serialized.
+     * @return true if the tuple was appended successfully, else false.
+     */
+    public boolean appendTuple(IFrameTupleAccessor tAccess, int tIdx) throws HyracksDataException;
+}
\ No newline at end of file
diff --git a/hyracks/hyracks-api/src/main/java/edu/uci/ics/hyracks/api/dataflow/value/IResultSerializerFactory.java b/hyracks/hyracks-api/src/main/java/edu/uci/ics/hyracks/api/dataflow/value/IResultSerializerFactory.java
new file mode 100644
index 0000000..92cf569
--- /dev/null
+++ b/hyracks/hyracks-api/src/main/java/edu/uci/ics/hyracks/api/dataflow/value/IResultSerializerFactory.java
@@ -0,0 +1,29 @@
+/*
+ * Copyright 2009-2010 by The Regents of the University of California
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * you may obtain a copy of the License from
+ * 
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ * 
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+package edu.uci.ics.hyracks.api.dataflow.value;
+
+import java.io.PrintStream;
+import java.io.Serializable;
+
+public interface IResultSerializerFactory extends Serializable {
+    /**
+     * Creates a result serialized appender
+     * 
+     * @param printStream
+     *            - A print stream object to which the serialized results will be written.
+     * @return A new instance of result serialized appender.
+     */
+    public IResultSerializer createResultSerializer(PrintStream printStream);
+}
\ No newline at end of file
diff --git a/hyracks/hyracks-api/src/main/java/edu/uci/ics/hyracks/api/dataflow/value/JSONSerializable.java b/hyracks/hyracks-api/src/main/java/edu/uci/ics/hyracks/api/dataflow/value/JSONSerializable.java
new file mode 100644
index 0000000..1eca502
--- /dev/null
+++ b/hyracks/hyracks-api/src/main/java/edu/uci/ics/hyracks/api/dataflow/value/JSONSerializable.java
@@ -0,0 +1,27 @@
+/*
+ * Copyright 2009-2010 by The Regents of the University of California
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * you may obtain a copy of the License from
+ * 
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ * 
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+package edu.uci.ics.hyracks.api.dataflow.value;
+
+import org.json.JSONException;
+import org.json.JSONObject;
+
+public interface JSONSerializable {
+    /**
+     * Returns the JSON representation of the object.
+     * 
+     * @return A new JSONObject instance representing this Java object.
+     */
+    public JSONObject toJSON() throws JSONException;
+}
\ No newline at end of file
diff --git a/hyracks/hyracks-api/src/main/java/edu/uci/ics/hyracks/api/dataset/DatasetDirectoryRecord.java b/hyracks/hyracks-api/src/main/java/edu/uci/ics/hyracks/api/dataset/DatasetDirectoryRecord.java
new file mode 100644
index 0000000..6316bba
--- /dev/null
+++ b/hyracks/hyracks-api/src/main/java/edu/uci/ics/hyracks/api/dataset/DatasetDirectoryRecord.java
@@ -0,0 +1,85 @@
+/*
+ * Copyright 2009-2010 by The Regents of the University of California
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * you may obtain a copy of the License from
+ * 
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ * 
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+package edu.uci.ics.hyracks.api.dataset;
+
+import java.io.Serializable;
+
+import edu.uci.ics.hyracks.api.comm.NetworkAddress;
+
+public class DatasetDirectoryRecord implements Serializable {
+    public enum Status {
+        IDLE,
+        RUNNING,
+        SUCCESS,
+        FAILED
+    }
+
+    private static final long serialVersionUID = 1L;
+
+    private NetworkAddress address;
+
+    private boolean readEOS;
+
+    private Status status;
+
+    public DatasetDirectoryRecord() {
+        this.address = null;
+        this.readEOS = false;
+        this.status = Status.IDLE;
+    }
+
+    public void setNetworkAddress(NetworkAddress address) {
+        this.address = address;
+    }
+
+    public NetworkAddress getNetworkAddress() {
+        return address;
+    }
+
+    public void readEOS() {
+        this.readEOS = true;
+    }
+
+    public boolean hasReachedReadEOS() {
+        return readEOS;
+    }
+
+    public void start() {
+        status = Status.RUNNING;
+    }
+
+    public void writeEOS() {
+        status = Status.SUCCESS;
+    }
+
+    public void fail() {
+        status = Status.FAILED;
+    }
+
+    public Status getStatus() {
+        return status;
+    }
+
+    @Override
+    public boolean equals(Object o) {
+        if (o == this) {
+            return true;
+        }
+        if (!(o instanceof DatasetDirectoryRecord)) {
+            return false;
+        }
+        return address.equals(((DatasetDirectoryRecord) o).address);
+    }
+}
diff --git a/hyracks/hyracks-api/src/main/java/edu/uci/ics/hyracks/api/dataset/IDatasetDirectoryService.java b/hyracks/hyracks-api/src/main/java/edu/uci/ics/hyracks/api/dataset/IDatasetDirectoryService.java
new file mode 100644
index 0000000..5266333
--- /dev/null
+++ b/hyracks/hyracks-api/src/main/java/edu/uci/ics/hyracks/api/dataset/IDatasetDirectoryService.java
@@ -0,0 +1,34 @@
+/*
+ * Copyright 2009-2010 by The Regents of the University of California
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * you may obtain a copy of the License from
+ * 
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ * 
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+package edu.uci.ics.hyracks.api.dataset;
+
+import edu.uci.ics.hyracks.api.comm.NetworkAddress;
+import edu.uci.ics.hyracks.api.dataset.DatasetDirectoryRecord.Status;
+import edu.uci.ics.hyracks.api.exceptions.HyracksDataException;
+import edu.uci.ics.hyracks.api.job.JobId;
+
+public interface IDatasetDirectoryService {
+    public void registerResultPartitionLocation(JobId jobId, ResultSetId rsId, boolean orderedResult, int partition,
+            int nPartitions, NetworkAddress networkAddress);
+
+    public void reportResultPartitionWriteCompletion(JobId jobId, ResultSetId rsId, int partition);
+
+    public void reportResultPartitionFailure(JobId jobId, ResultSetId rsId, int partition);
+
+    public Status getResultStatus(JobId jobId, ResultSetId rsId) throws HyracksDataException;
+
+    public DatasetDirectoryRecord[] getResultPartitionLocations(JobId jobId, ResultSetId rsId,
+            DatasetDirectoryRecord[] knownLocations) throws HyracksDataException;
+}
diff --git a/hyracks/hyracks-api/src/main/java/edu/uci/ics/hyracks/api/dataset/IDatasetInputChannelMonitor.java b/hyracks/hyracks-api/src/main/java/edu/uci/ics/hyracks/api/dataset/IDatasetInputChannelMonitor.java
new file mode 100644
index 0000000..65ba1c7
--- /dev/null
+++ b/hyracks/hyracks-api/src/main/java/edu/uci/ics/hyracks/api/dataset/IDatasetInputChannelMonitor.java
@@ -0,0 +1,27 @@
+/*
+ * Copyright 2009-2010 by The Regents of the University of California
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * you may obtain a copy of the License from
+ * 
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ * 
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+package edu.uci.ics.hyracks.api.dataset;
+
+import edu.uci.ics.hyracks.api.channels.IInputChannelMonitor;
+
+public interface IDatasetInputChannelMonitor extends IInputChannelMonitor {
+    public boolean eosReached();
+
+    public boolean failed();
+
+    public int getNFramesAvailable();
+
+    public void notifyFrameRead();
+}
diff --git a/hyracks/hyracks-api/src/main/java/edu/uci/ics/hyracks/api/dataset/IDatasetPartitionManager.java b/hyracks/hyracks-api/src/main/java/edu/uci/ics/hyracks/api/dataset/IDatasetPartitionManager.java
new file mode 100644
index 0000000..ae38c7f
--- /dev/null
+++ b/hyracks/hyracks-api/src/main/java/edu/uci/ics/hyracks/api/dataset/IDatasetPartitionManager.java
@@ -0,0 +1,37 @@
+/*
+ * Copyright 2009-2010 by The Regents of the University of California
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * you may obtain a copy of the License from
+ * 
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ * 
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+package edu.uci.ics.hyracks.api.dataset;
+
+import edu.uci.ics.hyracks.api.comm.IFrameWriter;
+import edu.uci.ics.hyracks.api.context.IHyracksTaskContext;
+import edu.uci.ics.hyracks.api.exceptions.HyracksException;
+import edu.uci.ics.hyracks.api.io.IWorkspaceFileFactory;
+import edu.uci.ics.hyracks.api.job.JobId;
+
+public interface IDatasetPartitionManager {
+    public IFrameWriter createDatasetPartitionWriter(IHyracksTaskContext ctx, ResultSetId rsId, boolean orderedResult,
+            int partition, int nPartitions) throws HyracksException;
+
+    public void reportPartitionWriteCompletion(JobId jobId, ResultSetId resultSetId, int partition)
+            throws HyracksException;
+
+    public void reportPartitionFailure(JobId jobId, ResultSetId resultSetId, int partition) throws HyracksException;
+
+    public void initializeDatasetPartitionReader(JobId jobId, int partition, IFrameWriter noc) throws HyracksException;
+
+    public IWorkspaceFileFactory getFileFactory();
+
+    public void close();
+}
diff --git a/hyracks/hyracks-api/src/main/java/edu/uci/ics/hyracks/api/dataset/IHyracksDataset.java b/hyracks/hyracks-api/src/main/java/edu/uci/ics/hyracks/api/dataset/IHyracksDataset.java
new file mode 100644
index 0000000..40db7a7
--- /dev/null
+++ b/hyracks/hyracks-api/src/main/java/edu/uci/ics/hyracks/api/dataset/IHyracksDataset.java
@@ -0,0 +1,30 @@
+/*
+ * Copyright 2009-2010 by The Regents of the University of California
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * you may obtain a copy of the License from
+ * 
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ * 
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+package edu.uci.ics.hyracks.api.dataset;
+
+import java.io.IOException;
+import java.nio.ByteBuffer;
+
+import edu.uci.ics.hyracks.api.dataset.DatasetDirectoryRecord.Status;
+import edu.uci.ics.hyracks.api.exceptions.HyracksDataException;
+import edu.uci.ics.hyracks.api.job.JobId;
+
+public interface IHyracksDataset {
+    public void open(JobId jobId, ResultSetId resultSetId) throws IOException;
+
+    public Status getResultStatus();
+
+    public int read(ByteBuffer buffer) throws HyracksDataException;
+}
diff --git a/hyracks/hyracks-api/src/main/java/edu/uci/ics/hyracks/api/dataset/IHyracksDatasetDirectoryServiceConnection.java b/hyracks/hyracks-api/src/main/java/edu/uci/ics/hyracks/api/dataset/IHyracksDatasetDirectoryServiceConnection.java
new file mode 100644
index 0000000..d49d5cd
--- /dev/null
+++ b/hyracks/hyracks-api/src/main/java/edu/uci/ics/hyracks/api/dataset/IHyracksDatasetDirectoryServiceConnection.java
@@ -0,0 +1,47 @@
+/*
+ * Copyright 2009-2010 by The Regents of the University of California
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * you may obtain a copy of the License from
+ * 
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ * 
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+package edu.uci.ics.hyracks.api.dataset;
+
+import edu.uci.ics.hyracks.api.dataset.DatasetDirectoryRecord.Status;
+import edu.uci.ics.hyracks.api.job.JobId;
+
+public interface IHyracksDatasetDirectoryServiceConnection {
+    /**
+     * Gets the result status for the given result set.
+     * 
+     * @param jobId
+     *            ID of the job
+     * @param rsId
+     *            ID of the result set
+     * @return {@link Status}
+     * @throws Exception
+     */
+    public Status getDatasetResultStatus(JobId jobId, ResultSetId rsId) throws Exception;
+
+    /**
+     * Gets the IP Addresses and ports for the partition generating the result for each location.
+     * 
+     * @param jobId
+     *            ID of the job
+     * @param rsId
+     *            ID of the result set
+     * @param knownRecords
+     *            Locations that are already known to the client
+     * @return {@link NetworkAddress[]}
+     * @throws Exception
+     */
+    public DatasetDirectoryRecord[] getDatasetResultLocations(JobId jobId, ResultSetId rsId,
+            DatasetDirectoryRecord[] knownRecords) throws Exception;
+}
diff --git a/hyracks/hyracks-api/src/main/java/edu/uci/ics/hyracks/api/dataset/IHyracksDatasetDirectoryServiceInterface.java b/hyracks/hyracks-api/src/main/java/edu/uci/ics/hyracks/api/dataset/IHyracksDatasetDirectoryServiceInterface.java
new file mode 100644
index 0000000..ba21a84
--- /dev/null
+++ b/hyracks/hyracks-api/src/main/java/edu/uci/ics/hyracks/api/dataset/IHyracksDatasetDirectoryServiceInterface.java
@@ -0,0 +1,47 @@
+/*
+ * Copyright 2009-2010 by The Regents of the University of California
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * you may obtain a copy of the License from
+ * 
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ * 
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+package edu.uci.ics.hyracks.api.dataset;
+
+import edu.uci.ics.hyracks.api.dataset.DatasetDirectoryRecord.Status;
+import edu.uci.ics.hyracks.api.job.JobId;
+
+public interface IHyracksDatasetDirectoryServiceInterface {
+    /**
+     * Gets the result status for the given result set.
+     * 
+     * @param jobId
+     *            ID of the job
+     * @param rsId
+     *            ID of the result set
+     * @return {@link Status}
+     * @throws Exception
+     */
+    public Status getDatasetResultStatus(JobId jobId, ResultSetId rsId) throws Exception;
+
+    /**
+     * Gets the IP Addresses and ports for the partition generating the result for each location.
+     * 
+     * @param jobId
+     *            ID of the job
+     * @param rsId
+     *            ID of the result set
+     * @param knownRecords
+     *            Locations from the dataset directory that are already known to the client
+     * @return {@link NetworkAddress[]}
+     * @throws Exception
+     */
+    public DatasetDirectoryRecord[] getDatasetResultLocations(JobId jobId, ResultSetId rsId,
+            DatasetDirectoryRecord[] knownRecords) throws Exception;
+}
diff --git a/hyracks/hyracks-api/src/main/java/edu/uci/ics/hyracks/api/dataset/ResultSetId.java b/hyracks/hyracks-api/src/main/java/edu/uci/ics/hyracks/api/dataset/ResultSetId.java
new file mode 100644
index 0000000..ae38ef3
--- /dev/null
+++ b/hyracks/hyracks-api/src/main/java/edu/uci/ics/hyracks/api/dataset/ResultSetId.java
@@ -0,0 +1,52 @@
+/*
+ * Copyright 2009-2010 by The Regents of the University of California
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * you may obtain a copy of the License from
+ * 
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ * 
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+package edu.uci.ics.hyracks.api.dataset;
+
+import java.io.Serializable;
+
+public class ResultSetId implements Serializable {
+    private static final long serialVersionUID = 1L;
+
+    private final long id;
+
+    public ResultSetId(long id) {
+        this.id = id;
+    }
+
+    public long getId() {
+        return id;
+    }
+
+    @Override
+    public int hashCode() {
+        return (int) id;
+    }
+
+    @Override
+    public boolean equals(Object o) {
+        if (o == this) {
+            return true;
+        }
+        if (!(o instanceof ResultSetId)) {
+            return false;
+        }
+        return ((ResultSetId) o).id == id;
+    }
+
+    @Override
+    public String toString() {
+        return "RSID:" + id;
+    }
+}
diff --git a/hyracks/hyracks-api/src/main/java/edu/uci/ics/hyracks/api/job/JobSpecification.java b/hyracks/hyracks-api/src/main/java/edu/uci/ics/hyracks/api/job/JobSpecification.java
index 7c523f1..1fdff0f 100644
--- a/hyracks/hyracks-api/src/main/java/edu/uci/ics/hyracks/api/job/JobSpecification.java
+++ b/hyracks/hyracks-api/src/main/java/edu/uci/ics/hyracks/api/job/JobSpecification.java
@@ -34,12 +34,15 @@
 import edu.uci.ics.hyracks.api.dataflow.OperatorDescriptorId;
 import edu.uci.ics.hyracks.api.dataflow.connectors.IConnectorPolicyAssignmentPolicy;
 import edu.uci.ics.hyracks.api.dataflow.value.RecordDescriptor;
+import edu.uci.ics.hyracks.api.dataset.ResultSetId;
 
 public class JobSpecification implements Serializable, IOperatorDescriptorRegistry, IConnectorDescriptorRegistry {
     private static final long serialVersionUID = 1L;
 
     private final List<OperatorDescriptorId> roots;
 
+    private final List<ResultSetId> resultSetIds;
+
     private final Map<OperatorDescriptorId, IOperatorDescriptor> opMap;
 
     private final Map<ConnectorDescriptorId, IConnectorDescriptor> connMap;
@@ -72,6 +75,7 @@
 
     public JobSpecification() {
         roots = new ArrayList<OperatorDescriptorId>();
+        resultSetIds = new ArrayList<ResultSetId>();
         opMap = new HashMap<OperatorDescriptorId, IOperatorDescriptor>();
         connMap = new HashMap<ConnectorDescriptorId, IConnectorDescriptor>();
         opInputMap = new HashMap<OperatorDescriptorId, List<IConnectorDescriptor>>();
@@ -104,6 +108,10 @@
         roots.add(op.getOperatorId());
     }
 
+    public void addResultSetId(ResultSetId rsId) {
+        resultSetIds.add(rsId);
+    }
+
     public void connect(IConnectorDescriptor conn, IOperatorDescriptor producerOp, int producerPort,
             IOperatorDescriptor consumerOp, int consumerPort) {
         insertIntoIndexedMap(opInputMap, consumerOp.getOperatorId(), consumerPort, conn);
@@ -208,6 +216,10 @@
         return roots;
     }
 
+    public List<ResultSetId> getResultSetIds() {
+        return resultSetIds;
+    }
+
     public IConnectorPolicyAssignmentPolicy getConnectorPolicyAssignmentPolicy() {
         return connectorPolicyAssignmentPolicy;
     }
diff --git a/hyracks/hyracks-client/pom.xml b/hyracks/hyracks-client/pom.xml
new file mode 100644
index 0000000..854a009
--- /dev/null
+++ b/hyracks/hyracks-client/pom.xml
@@ -0,0 +1,46 @@
+<project xmlns="http://maven.apache.org/POM/4.0.0" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/maven-v4_0_0.xsd">
+  <modelVersion>4.0.0</modelVersion>
+  <artifactId>hyracks-client</artifactId>
+  <name>hyracks-client</name>
+  <parent>
+    <groupId>edu.uci.ics.hyracks</groupId>
+    <artifactId>hyracks</artifactId>
+    <version>0.2.3-SNAPSHOT</version>
+  </parent>
+
+  <build>
+    <plugins>
+      <plugin>
+        <groupId>org.apache.maven.plugins</groupId>
+        <artifactId>maven-compiler-plugin</artifactId>
+        <version>2.0.2</version>
+        <configuration>
+          <source>1.7</source>
+          <target>1.7</target>
+        </configuration>
+      </plugin>
+    </plugins>
+  </build>
+  <dependencies>
+ <dependency>
+    <groupId>edu.uci.ics.hyracks</groupId>
+    <artifactId>hyracks-api</artifactId>
+    <version>0.2.3-SNAPSHOT</version>
+ </dependency>
+ <dependency>
+    <groupId>edu.uci.ics.hyracks</groupId>
+    <artifactId>hyracks-net</artifactId>
+    <version>0.2.3-SNAPSHOT</version>
+ </dependency>
+ <dependency>
+    <groupId>edu.uci.ics.hyracks</groupId>
+    <artifactId>hyracks-comm</artifactId>
+    <version>0.2.3-SNAPSHOT</version>
+ </dependency>
+  <dependency>
+    <groupId>edu.uci.ics.hyracks</groupId>
+    <artifactId>hyracks-dataflow-common</artifactId>
+    <version>0.2.3-SNAPSHOT</version>
+ </dependency>
+  </dependencies>
+</project>
diff --git a/hyracks/hyracks-client/src/main/java/edu/uci/ics/hyracks/client/dataset/DatasetClientContext.java b/hyracks/hyracks-client/src/main/java/edu/uci/ics/hyracks/client/dataset/DatasetClientContext.java
new file mode 100644
index 0000000..8be4a8c
--- /dev/null
+++ b/hyracks/hyracks-client/src/main/java/edu/uci/ics/hyracks/client/dataset/DatasetClientContext.java
@@ -0,0 +1,44 @@
+/*
+ * Copyright 2009-2010 by The Regents of the University of California
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * you may obtain a copy of the License from
+ * 
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ * 
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+package edu.uci.ics.hyracks.client.dataset;
+
+import java.nio.ByteBuffer;
+
+import edu.uci.ics.hyracks.api.context.IHyracksCommonContext;
+import edu.uci.ics.hyracks.api.io.IIOManager;
+
+public class DatasetClientContext implements IHyracksCommonContext {
+    private final int frameSize;
+
+    public DatasetClientContext(int frameSize) {
+        this.frameSize = frameSize;
+    }
+
+    @Override
+    public int getFrameSize() {
+        return frameSize;
+    }
+
+    @Override
+    public IIOManager getIOManager() {
+        return null;
+    }
+
+    @Override
+    public ByteBuffer allocateFrame() {
+        return ByteBuffer.allocate(frameSize);
+    }
+
+}
diff --git a/hyracks/hyracks-client/src/main/java/edu/uci/ics/hyracks/client/dataset/HyracksDataset.java b/hyracks/hyracks-client/src/main/java/edu/uci/ics/hyracks/client/dataset/HyracksDataset.java
new file mode 100644
index 0000000..314b621
--- /dev/null
+++ b/hyracks/hyracks-client/src/main/java/edu/uci/ics/hyracks/client/dataset/HyracksDataset.java
@@ -0,0 +1,262 @@
+/*
+ * Copyright 2009-2010 by The Regents of the University of California
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * you may obtain a copy of the License from
+ * 
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ * 
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+package edu.uci.ics.hyracks.client.dataset;
+
+import java.io.IOException;
+import java.net.InetAddress;
+import java.net.InetSocketAddress;
+import java.net.SocketAddress;
+import java.net.UnknownHostException;
+import java.nio.ByteBuffer;
+import java.util.concurrent.atomic.AtomicBoolean;
+import java.util.concurrent.atomic.AtomicInteger;
+
+import edu.uci.ics.hyracks.api.channels.IInputChannel;
+import edu.uci.ics.hyracks.api.client.IHyracksClientConnection;
+import edu.uci.ics.hyracks.api.comm.NetworkAddress;
+import edu.uci.ics.hyracks.api.dataset.DatasetDirectoryRecord;
+import edu.uci.ics.hyracks.api.dataset.DatasetDirectoryRecord.Status;
+import edu.uci.ics.hyracks.api.dataset.IDatasetInputChannelMonitor;
+import edu.uci.ics.hyracks.api.dataset.IHyracksDataset;
+import edu.uci.ics.hyracks.api.dataset.IHyracksDatasetDirectoryServiceConnection;
+import edu.uci.ics.hyracks.api.dataset.ResultSetId;
+import edu.uci.ics.hyracks.api.exceptions.HyracksDataException;
+import edu.uci.ics.hyracks.api.exceptions.HyracksException;
+import edu.uci.ics.hyracks.api.job.JobId;
+import edu.uci.ics.hyracks.client.net.ClientNetworkManager;
+import edu.uci.ics.hyracks.comm.channels.DatasetNetworkInputChannel;
+
+// TODO(madhusudancs): Should this implementation be moved to edu.uci.ics.hyracks.client?
+public class HyracksDataset implements IHyracksDataset {
+    private final IHyracksDatasetDirectoryServiceConnection datasetDirectoryServiceConnection;
+
+    private final ClientNetworkManager netManager;
+
+    private final DatasetClientContext datasetClientCtx;
+
+    private JobId jobId;
+
+    private ResultSetId resultSetId;
+
+    private DatasetDirectoryRecord[] knownRecords;
+
+    private IDatasetInputChannelMonitor[] monitors;
+
+    private int lastReadPartition;
+
+    private IDatasetInputChannelMonitor lastMonitor;
+
+    private DatasetNetworkInputChannel resultChannel;
+
+    private static int NUM_READ_BUFFERS = 1;
+
+    public HyracksDataset(IHyracksClientConnection hcc, DatasetClientContext datasetClientCtx, int nReaders)
+            throws Exception {
+        NetworkAddress ddsAddress = hcc.getDatasetDirectoryServiceInfo();
+        datasetDirectoryServiceConnection = new HyracksDatasetDirectoryServiceConnection(new String(
+                ddsAddress.getIpAddress()), ddsAddress.getPort());
+
+        netManager = new ClientNetworkManager(nReaders);
+
+        this.datasetClientCtx = datasetClientCtx;
+
+        knownRecords = null;
+        monitors = null;
+        lastReadPartition = -1;
+        lastMonitor = null;
+        resultChannel = null;
+    }
+
+    @Override
+    public void open(JobId jobId, ResultSetId resultSetId) throws IOException {
+        this.jobId = jobId;
+        this.resultSetId = resultSetId;
+        netManager.start();
+    }
+
+    @Override
+    public Status getResultStatus() {
+        Status status = null;
+        try {
+            status = datasetDirectoryServiceConnection.getDatasetResultStatus(jobId, resultSetId);
+        } catch (Exception e) {
+            // TODO(madhusudancs): Decide what to do in case of error
+        }
+        return status;
+    }
+
+    @Override
+    public int read(ByteBuffer buffer) throws HyracksDataException {
+        ByteBuffer readBuffer;
+        int readSize = 0;
+
+        if (lastReadPartition == -1) {
+            while (knownRecords == null || knownRecords[0] == null) {
+                try {
+                    knownRecords = datasetDirectoryServiceConnection.getDatasetResultLocations(jobId, resultSetId,
+                            knownRecords);
+                    lastReadPartition = 0;
+                    resultChannel = new DatasetNetworkInputChannel(netManager,
+                            getSocketAddress(knownRecords[lastReadPartition]), jobId, lastReadPartition,
+                            NUM_READ_BUFFERS);
+                    lastMonitor = getMonitor(lastReadPartition);
+                    resultChannel.open(datasetClientCtx);
+                    resultChannel.registerMonitor(lastMonitor);
+                } catch (HyracksException e) {
+                    throw new HyracksDataException(e);
+                } catch (UnknownHostException e) {
+                    throw new HyracksDataException(e);
+                } catch (Exception e) {
+                    // Do nothing here.
+                }
+            }
+        }
+
+        while (readSize <= 0 && !((lastReadPartition == knownRecords.length - 1) && (lastMonitor.eosReached()))) {
+            while (lastMonitor.getNFramesAvailable() <= 0 && !lastMonitor.eosReached()) {
+                synchronized (lastMonitor) {
+                    try {
+                        lastMonitor.wait();
+                    } catch (InterruptedException e) {
+                        throw new HyracksDataException(e);
+                    }
+                }
+            }
+
+            if (lastMonitor.getNFramesAvailable() <= 0 && lastMonitor.eosReached()) {
+                if ((lastReadPartition == knownRecords.length - 1)) {
+                    break;
+                } else {
+                    try {
+                        lastReadPartition++;
+                        while (knownRecords[lastReadPartition] == null) {
+                            try {
+                                knownRecords = datasetDirectoryServiceConnection.getDatasetResultLocations(jobId,
+                                        resultSetId, knownRecords);
+                            } catch (Exception e) {
+                                // Do nothing here.
+                            }
+                        }
+
+                        resultChannel = new DatasetNetworkInputChannel(netManager,
+                                getSocketAddress(knownRecords[lastReadPartition]), jobId, lastReadPartition,
+                                NUM_READ_BUFFERS);
+                        lastMonitor = getMonitor(lastReadPartition);
+                        resultChannel.open(datasetClientCtx);
+                        resultChannel.registerMonitor(lastMonitor);
+                    } catch (HyracksException e) {
+                        throw new HyracksDataException(e);
+                    } catch (UnknownHostException e) {
+                        throw new HyracksDataException(e);
+                    }
+                }
+            } else {
+                readBuffer = resultChannel.getNextBuffer();
+                lastMonitor.notifyFrameRead();
+                if (readBuffer != null) {
+                    buffer.put(readBuffer);
+                    buffer.flip();
+                    readSize = buffer.limit();
+                    resultChannel.recycleBuffer(readBuffer);
+                }
+            }
+        }
+
+        return readSize;
+    }
+
+    private boolean nullExists(DatasetDirectoryRecord[] locations) {
+        if (locations == null) {
+            return true;
+        }
+        for (int i = 0; i < locations.length; i++) {
+            if (locations[i] == null) {
+                return true;
+            }
+        }
+        return false;
+    }
+
+    private SocketAddress getSocketAddress(DatasetDirectoryRecord addr) throws UnknownHostException {
+        NetworkAddress netAddr = addr.getNetworkAddress();
+        return new InetSocketAddress(InetAddress.getByAddress(netAddr.getIpAddress()), netAddr.getPort());
+    }
+
+    private IDatasetInputChannelMonitor getMonitor(int partition) throws HyracksException {
+        if (knownRecords == null || knownRecords[partition] == null) {
+            throw new HyracksException("Accessing monitors before the obtaining the corresponding addresses.");
+        }
+        if (monitors == null) {
+            monitors = new DatasetInputChannelMonitor[knownRecords.length];
+        }
+        if (monitors[partition] == null) {
+            monitors[partition] = new DatasetInputChannelMonitor();
+        }
+        return monitors[partition];
+    }
+
+    private class DatasetInputChannelMonitor implements IDatasetInputChannelMonitor {
+        private final AtomicInteger nAvailableFrames;
+
+        private final AtomicBoolean eos;
+
+        private final AtomicBoolean failed;
+
+        public DatasetInputChannelMonitor() {
+            nAvailableFrames = new AtomicInteger(0);
+            eos = new AtomicBoolean(false);
+            failed = new AtomicBoolean(false);
+        }
+
+        @Override
+        public synchronized void notifyFailure(IInputChannel channel) {
+            failed.set(true);
+            notifyAll();
+        }
+
+        @Override
+        public synchronized void notifyDataAvailability(IInputChannel channel, int nFrames) {
+            nAvailableFrames.addAndGet(nFrames);
+            notifyAll();
+        }
+
+        @Override
+        public synchronized void notifyEndOfStream(IInputChannel channel) {
+            eos.set(true);
+            notifyAll();
+        }
+
+        @Override
+        public synchronized boolean eosReached() {
+            return eos.get();
+        }
+
+        @Override
+        public synchronized boolean failed() {
+            return failed.get();
+        }
+
+        @Override
+        public synchronized int getNFramesAvailable() {
+            return nAvailableFrames.get();
+        }
+
+        @Override
+        public synchronized void notifyFrameRead() {
+            nAvailableFrames.decrementAndGet();
+        }
+
+    }
+}
diff --git a/hyracks/hyracks-client/src/main/java/edu/uci/ics/hyracks/client/dataset/HyracksDatasetDirectoryServiceConnection.java b/hyracks/hyracks-client/src/main/java/edu/uci/ics/hyracks/client/dataset/HyracksDatasetDirectoryServiceConnection.java
new file mode 100644
index 0000000..095fd7d
--- /dev/null
+++ b/hyracks/hyracks-client/src/main/java/edu/uci/ics/hyracks/client/dataset/HyracksDatasetDirectoryServiceConnection.java
@@ -0,0 +1,53 @@
+/*
+ * Copyright 2009-2010 by The Regents of the University of California
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * you may obtain a copy of the License from
+ * 
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ * 
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+package edu.uci.ics.hyracks.client.dataset;
+
+import java.net.InetSocketAddress;
+
+import edu.uci.ics.hyracks.api.dataset.DatasetDirectoryRecord;
+import edu.uci.ics.hyracks.api.dataset.DatasetDirectoryRecord.Status;
+import edu.uci.ics.hyracks.api.dataset.IHyracksDatasetDirectoryServiceConnection;
+import edu.uci.ics.hyracks.api.dataset.IHyracksDatasetDirectoryServiceInterface;
+import edu.uci.ics.hyracks.api.dataset.ResultSetId;
+import edu.uci.ics.hyracks.api.job.JobId;
+import edu.uci.ics.hyracks.ipc.api.IIPCHandle;
+import edu.uci.ics.hyracks.ipc.api.RPCInterface;
+import edu.uci.ics.hyracks.ipc.impl.IPCSystem;
+import edu.uci.ics.hyracks.ipc.impl.JavaSerializationBasedPayloadSerializerDeserializer;
+
+//TODO(madhusudancs): Should this implementation be moved to edu.uci.ics.hyracks.client?
+public class HyracksDatasetDirectoryServiceConnection implements IHyracksDatasetDirectoryServiceConnection {
+    private final IPCSystem ipc;
+    private final IHyracksDatasetDirectoryServiceInterface ddsi;
+
+    public HyracksDatasetDirectoryServiceConnection(String ddsHost, int ddsPort) throws Exception {
+        RPCInterface rpci = new RPCInterface();
+        ipc = new IPCSystem(new InetSocketAddress(0), rpci, new JavaSerializationBasedPayloadSerializerDeserializer());
+        ipc.start();
+        IIPCHandle ddsIpchandle = ipc.getHandle(new InetSocketAddress(ddsHost, ddsPort));
+        this.ddsi = new HyracksDatasetDirectoryServiceInterfaceRemoteProxy(ddsIpchandle, rpci);
+    }
+
+    @Override
+    public Status getDatasetResultStatus(JobId jobId, ResultSetId rsId) throws Exception {
+        return ddsi.getDatasetResultStatus(jobId, rsId);
+    }
+
+    @Override
+    public DatasetDirectoryRecord[] getDatasetResultLocations(JobId jobId, ResultSetId rsId,
+            DatasetDirectoryRecord[] knownRecords) throws Exception {
+        return ddsi.getDatasetResultLocations(jobId, rsId, knownRecords);
+    }
+}
diff --git a/hyracks/hyracks-client/src/main/java/edu/uci/ics/hyracks/client/dataset/HyracksDatasetDirectoryServiceInterfaceRemoteProxy.java b/hyracks/hyracks-client/src/main/java/edu/uci/ics/hyracks/client/dataset/HyracksDatasetDirectoryServiceInterfaceRemoteProxy.java
new file mode 100644
index 0000000..47cdf97
--- /dev/null
+++ b/hyracks/hyracks-client/src/main/java/edu/uci/ics/hyracks/client/dataset/HyracksDatasetDirectoryServiceInterfaceRemoteProxy.java
@@ -0,0 +1,51 @@
+/*
+ * Copyright 2009-2010 by The Regents of the University of California
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * you may obtain a copy of the License from
+ * 
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ * 
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+package edu.uci.ics.hyracks.client.dataset;
+
+import edu.uci.ics.hyracks.api.client.HyracksClientInterfaceFunctions;
+import edu.uci.ics.hyracks.api.dataset.DatasetDirectoryRecord;
+import edu.uci.ics.hyracks.api.dataset.DatasetDirectoryRecord.Status;
+import edu.uci.ics.hyracks.api.dataset.IHyracksDatasetDirectoryServiceInterface;
+import edu.uci.ics.hyracks.api.dataset.ResultSetId;
+import edu.uci.ics.hyracks.api.job.JobId;
+import edu.uci.ics.hyracks.ipc.api.IIPCHandle;
+import edu.uci.ics.hyracks.ipc.api.RPCInterface;
+
+//TODO(madhusudancs): Should this implementation be moved to edu.uci.ics.hyracks.client?
+public class HyracksDatasetDirectoryServiceInterfaceRemoteProxy implements IHyracksDatasetDirectoryServiceInterface {
+    private final IIPCHandle ipcHandle;
+
+    private final RPCInterface rpci;
+
+    public HyracksDatasetDirectoryServiceInterfaceRemoteProxy(IIPCHandle ipcHandle, RPCInterface rpci) {
+        this.ipcHandle = ipcHandle;
+        this.rpci = rpci;
+    }
+
+    @Override
+    public Status getDatasetResultStatus(JobId jobId, ResultSetId rsId) throws Exception {
+        HyracksClientInterfaceFunctions.GetDatasetResultStatusFunction gdrlf = new HyracksClientInterfaceFunctions.GetDatasetResultStatusFunction(
+                jobId, rsId);
+        return (Status) rpci.call(ipcHandle, gdrlf);
+    }
+
+    @Override
+    public DatasetDirectoryRecord[] getDatasetResultLocations(JobId jobId, ResultSetId rsId,
+            DatasetDirectoryRecord[] knownRecords) throws Exception {
+        HyracksClientInterfaceFunctions.GetDatasetResultLocationsFunction gdrlf = new HyracksClientInterfaceFunctions.GetDatasetResultLocationsFunction(
+                jobId, rsId, knownRecords);
+        return (DatasetDirectoryRecord[]) rpci.call(ipcHandle, gdrlf);
+    }
+}
diff --git a/hyracks/hyracks-client/src/main/java/edu/uci/ics/hyracks/client/net/ClientNetworkManager.java b/hyracks/hyracks-client/src/main/java/edu/uci/ics/hyracks/client/net/ClientNetworkManager.java
new file mode 100644
index 0000000..7aef8b9
--- /dev/null
+++ b/hyracks/hyracks-client/src/main/java/edu/uci/ics/hyracks/client/net/ClientNetworkManager.java
@@ -0,0 +1,56 @@
+/*
+ * Copyright 2009-2010 by The Regents of the University of California
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * you may obtain a copy of the License from
+ * 
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ * 
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+package edu.uci.ics.hyracks.client.net;
+
+import java.io.IOException;
+import java.net.InetSocketAddress;
+import java.net.SocketAddress;
+
+import edu.uci.ics.hyracks.comm.channels.IChannelConnectionFactory;
+import edu.uci.ics.hyracks.net.exceptions.NetException;
+import edu.uci.ics.hyracks.net.protocols.muxdemux.ChannelControlBlock;
+import edu.uci.ics.hyracks.net.protocols.muxdemux.MultiplexedConnection;
+import edu.uci.ics.hyracks.net.protocols.muxdemux.MuxDemux;
+import edu.uci.ics.hyracks.net.protocols.muxdemux.MuxDemuxPerformanceCounters;
+
+public class ClientNetworkManager implements IChannelConnectionFactory {
+    private static final int MAX_CONNECTION_ATTEMPTS = 5;
+
+    private final MuxDemux md;
+
+    public ClientNetworkManager(int nThreads) throws IOException {
+        /* This is a connect only socket and does not listen to any incoming connections, so pass null to
+         * localAddress and listener.
+         */
+        md = new MuxDemux(null, null, nThreads, MAX_CONNECTION_ATTEMPTS);
+    }
+
+    public void start() throws IOException {
+        md.start();
+    }
+
+    public void stop() {
+
+    }
+
+    public ChannelControlBlock connect(SocketAddress remoteAddress) throws InterruptedException, NetException {
+        MultiplexedConnection mConn = md.connect((InetSocketAddress) remoteAddress);
+        return mConn.openChannel();
+    }
+
+    public MuxDemuxPerformanceCounters getPerformanceCounters() {
+        return md.getPerformanceCounters();
+    }
+}
\ No newline at end of file
diff --git a/hyracks/hyracks-comm/pom.xml b/hyracks/hyracks-comm/pom.xml
new file mode 100644
index 0000000..c3583699
--- /dev/null
+++ b/hyracks/hyracks-comm/pom.xml
@@ -0,0 +1,36 @@
+<project xmlns="http://maven.apache.org/POM/4.0.0" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/maven-v4_0_0.xsd">
+  <modelVersion>4.0.0</modelVersion>
+  <artifactId>hyracks-comm</artifactId>
+  <name>hyracks-comm</name>
+  <parent>
+    <groupId>edu.uci.ics.hyracks</groupId>
+    <artifactId>hyracks</artifactId>
+    <version>0.2.3-SNAPSHOT</version>
+  </parent>
+
+  <build>
+    <plugins>
+      <plugin>
+        <groupId>org.apache.maven.plugins</groupId>
+        <artifactId>maven-compiler-plugin</artifactId>
+        <version>2.0.2</version>
+        <configuration>
+          <source>1.7</source>
+          <target>1.7</target>
+        </configuration>
+      </plugin>
+    </plugins>
+  </build>
+  <dependencies>
+ <dependency>
+ 	<groupId>edu.uci.ics.hyracks</groupId>
+ 	<artifactId>hyracks-api</artifactId>
+ 	<version>0.2.3-SNAPSHOT</version>
+ </dependency>
+  <dependency>
+    <groupId>edu.uci.ics.hyracks</groupId>
+    <artifactId>hyracks-net</artifactId>
+    <version>0.2.3-SNAPSHOT</version>
+ </dependency>
+  </dependencies>
+</project>
diff --git a/hyracks/hyracks-control/hyracks-control-nc/src/main/java/edu/uci/ics/hyracks/control/nc/net/NetworkInputChannel.java b/hyracks/hyracks-comm/src/main/java/edu/uci/ics/hyracks/comm/channels/DatasetNetworkInputChannel.java
similarity index 72%
copy from hyracks/hyracks-control/hyracks-control-nc/src/main/java/edu/uci/ics/hyracks/control/nc/net/NetworkInputChannel.java
copy to hyracks/hyracks-comm/src/main/java/edu/uci/ics/hyracks/comm/channels/DatasetNetworkInputChannel.java
index 1d5af84..fac2949 100644
--- a/hyracks/hyracks-control/hyracks-control-nc/src/main/java/edu/uci/ics/hyracks/control/nc/net/NetworkInputChannel.java
+++ b/hyracks/hyracks-comm/src/main/java/edu/uci/ics/hyracks/comm/channels/DatasetNetworkInputChannel.java
@@ -12,7 +12,7 @@
  * See the License for the specific language governing permissions and
  * limitations under the License.
  */
-package edu.uci.ics.hyracks.control.nc.net;
+package edu.uci.ics.hyracks.comm.channels;
 
 import java.net.SocketAddress;
 import java.nio.ByteBuffer;
@@ -23,21 +23,25 @@
 
 import edu.uci.ics.hyracks.api.channels.IInputChannel;
 import edu.uci.ics.hyracks.api.channels.IInputChannelMonitor;
-import edu.uci.ics.hyracks.api.context.IHyracksTaskContext;
+import edu.uci.ics.hyracks.api.context.IHyracksCommonContext;
 import edu.uci.ics.hyracks.api.exceptions.HyracksDataException;
-import edu.uci.ics.hyracks.api.partitions.PartitionId;
+import edu.uci.ics.hyracks.api.job.JobId;
 import edu.uci.ics.hyracks.net.buffers.IBufferAcceptor;
 import edu.uci.ics.hyracks.net.buffers.ICloseableBufferAcceptor;
 import edu.uci.ics.hyracks.net.protocols.muxdemux.ChannelControlBlock;
 
-public class NetworkInputChannel implements IInputChannel {
-    private static final Logger LOGGER = Logger.getLogger(NetworkInputChannel.class.getName());
+public class DatasetNetworkInputChannel implements IInputChannel {
+    private static final Logger LOGGER = Logger.getLogger(DatasetNetworkInputChannel.class.getName());
 
-    private final NetworkManager netManager;
+    static final int INITIAL_MESSAGE_SIZE = 20;
+
+    private final IChannelConnectionFactory netManager;
 
     private final SocketAddress remoteAddress;
 
-    private final PartitionId partitionId;
+    private final JobId jobId;
+
+    private final int partition;
 
     private final Queue<ByteBuffer> fullQueue;
 
@@ -49,11 +53,12 @@
 
     private Object attachment;
 
-    public NetworkInputChannel(NetworkManager netManager, SocketAddress remoteAddress, PartitionId partitionId,
-            int nBuffers) {
+    public DatasetNetworkInputChannel(IChannelConnectionFactory netManager, SocketAddress remoteAddress, JobId jobId,
+            int partition, int nBuffers) {
         this.netManager = netManager;
         this.remoteAddress = remoteAddress;
-        this.partitionId = partitionId;
+        this.jobId = jobId;
+        this.partition = partition;
         fullQueue = new ArrayDeque<ByteBuffer>(nBuffers);
         this.nBuffers = nBuffers;
     }
@@ -85,7 +90,7 @@
     }
 
     @Override
-    public void open(IHyracksTaskContext ctx) throws HyracksDataException {
+    public void open(IHyracksCommonContext ctx) throws HyracksDataException {
         try {
             ccb = netManager.connect(remoteAddress);
         } catch (Exception e) {
@@ -96,14 +101,13 @@
         for (int i = 0; i < nBuffers; ++i) {
             ccb.getReadInterface().getEmptyBufferAcceptor().accept(ctx.allocateFrame());
         }
-        ByteBuffer writeBuffer = ByteBuffer.allocate(NetworkManager.INITIAL_MESSAGE_SIZE);
-        writeBuffer.putLong(partitionId.getJobId().getId());
-        writeBuffer.putInt(partitionId.getConnectorDescriptorId().getId());
-        writeBuffer.putInt(partitionId.getSenderIndex());
-        writeBuffer.putInt(partitionId.getReceiverIndex());
+        ByteBuffer writeBuffer = ByteBuffer.allocate(INITIAL_MESSAGE_SIZE);
+        writeBuffer.putLong(jobId.getId());
+        writeBuffer.putInt(partition);
         writeBuffer.flip();
         if (LOGGER.isLoggable(Level.FINE)) {
-            LOGGER.fine("Sending partition request: " + partitionId + " on channel: " + ccb);
+            LOGGER.fine("Sending partition request for JobId: " + jobId + " partition: " + partition + " on channel: "
+                    + ccb);
         }
         ccb.getWriteInterface().getFullBufferAcceptor().accept(writeBuffer);
         ccb.getWriteInterface().getFullBufferAcceptor().close();
@@ -118,17 +122,17 @@
         @Override
         public void accept(ByteBuffer buffer) {
             fullQueue.add(buffer);
-            monitor.notifyDataAvailability(NetworkInputChannel.this, 1);
+            monitor.notifyDataAvailability(DatasetNetworkInputChannel.this, 1);
         }
 
         @Override
         public void close() {
-            monitor.notifyEndOfStream(NetworkInputChannel.this);
+            monitor.notifyEndOfStream(DatasetNetworkInputChannel.this);
         }
 
         @Override
         public void error(int ecode) {
-            monitor.notifyFailure(NetworkInputChannel.this);
+            monitor.notifyFailure(DatasetNetworkInputChannel.this);
         }
     }
 
diff --git a/hyracks/hyracks-comm/src/main/java/edu/uci/ics/hyracks/comm/channels/IChannelConnectionFactory.java b/hyracks/hyracks-comm/src/main/java/edu/uci/ics/hyracks/comm/channels/IChannelConnectionFactory.java
new file mode 100644
index 0000000..33179ba
--- /dev/null
+++ b/hyracks/hyracks-comm/src/main/java/edu/uci/ics/hyracks/comm/channels/IChannelConnectionFactory.java
@@ -0,0 +1,24 @@
+/*
+ * Copyright 2009-2010 by The Regents of the University of California
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * you may obtain a copy of the License from
+ * 
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ * 
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+package edu.uci.ics.hyracks.comm.channels;
+
+import java.net.SocketAddress;
+
+import edu.uci.ics.hyracks.net.exceptions.NetException;
+import edu.uci.ics.hyracks.net.protocols.muxdemux.ChannelControlBlock;
+
+public interface IChannelConnectionFactory {
+    public ChannelControlBlock connect(SocketAddress remoteAddress) throws InterruptedException, NetException;
+}
diff --git a/hyracks/hyracks-control/hyracks-control-nc/src/main/java/edu/uci/ics/hyracks/control/nc/net/NetworkInputChannel.java b/hyracks/hyracks-comm/src/main/java/edu/uci/ics/hyracks/comm/channels/NetworkInputChannel.java
similarity index 89%
rename from hyracks/hyracks-control/hyracks-control-nc/src/main/java/edu/uci/ics/hyracks/control/nc/net/NetworkInputChannel.java
rename to hyracks/hyracks-comm/src/main/java/edu/uci/ics/hyracks/comm/channels/NetworkInputChannel.java
index 1d5af84..aa37b16 100644
--- a/hyracks/hyracks-control/hyracks-control-nc/src/main/java/edu/uci/ics/hyracks/control/nc/net/NetworkInputChannel.java
+++ b/hyracks/hyracks-comm/src/main/java/edu/uci/ics/hyracks/comm/channels/NetworkInputChannel.java
@@ -12,7 +12,7 @@
  * See the License for the specific language governing permissions and
  * limitations under the License.
  */
-package edu.uci.ics.hyracks.control.nc.net;
+package edu.uci.ics.hyracks.comm.channels;
 
 import java.net.SocketAddress;
 import java.nio.ByteBuffer;
@@ -23,7 +23,7 @@
 
 import edu.uci.ics.hyracks.api.channels.IInputChannel;
 import edu.uci.ics.hyracks.api.channels.IInputChannelMonitor;
-import edu.uci.ics.hyracks.api.context.IHyracksTaskContext;
+import edu.uci.ics.hyracks.api.context.IHyracksCommonContext;
 import edu.uci.ics.hyracks.api.exceptions.HyracksDataException;
 import edu.uci.ics.hyracks.api.partitions.PartitionId;
 import edu.uci.ics.hyracks.net.buffers.IBufferAcceptor;
@@ -33,7 +33,9 @@
 public class NetworkInputChannel implements IInputChannel {
     private static final Logger LOGGER = Logger.getLogger(NetworkInputChannel.class.getName());
 
-    private final NetworkManager netManager;
+    static final int INITIAL_MESSAGE_SIZE = 20;
+
+    private final IChannelConnectionFactory netManager;
 
     private final SocketAddress remoteAddress;
 
@@ -49,8 +51,8 @@
 
     private Object attachment;
 
-    public NetworkInputChannel(NetworkManager netManager, SocketAddress remoteAddress, PartitionId partitionId,
-            int nBuffers) {
+    public NetworkInputChannel(IChannelConnectionFactory netManager, SocketAddress remoteAddress,
+            PartitionId partitionId, int nBuffers) {
         this.netManager = netManager;
         this.remoteAddress = remoteAddress;
         this.partitionId = partitionId;
@@ -85,7 +87,7 @@
     }
 
     @Override
-    public void open(IHyracksTaskContext ctx) throws HyracksDataException {
+    public void open(IHyracksCommonContext ctx) throws HyracksDataException {
         try {
             ccb = netManager.connect(remoteAddress);
         } catch (Exception e) {
@@ -96,7 +98,7 @@
         for (int i = 0; i < nBuffers; ++i) {
             ccb.getReadInterface().getEmptyBufferAcceptor().accept(ctx.allocateFrame());
         }
-        ByteBuffer writeBuffer = ByteBuffer.allocate(NetworkManager.INITIAL_MESSAGE_SIZE);
+        ByteBuffer writeBuffer = ByteBuffer.allocate(INITIAL_MESSAGE_SIZE);
         writeBuffer.putLong(partitionId.getJobId().getId());
         writeBuffer.putInt(partitionId.getConnectorDescriptorId().getId());
         writeBuffer.putInt(partitionId.getSenderIndex());
diff --git a/hyracks/hyracks-control/hyracks-control-nc/src/main/java/edu/uci/ics/hyracks/control/nc/net/NetworkOutputChannel.java b/hyracks/hyracks-comm/src/main/java/edu/uci/ics/hyracks/comm/channels/NetworkOutputChannel.java
similarity index 97%
rename from hyracks/hyracks-control/hyracks-control-nc/src/main/java/edu/uci/ics/hyracks/control/nc/net/NetworkOutputChannel.java
rename to hyracks/hyracks-comm/src/main/java/edu/uci/ics/hyracks/comm/channels/NetworkOutputChannel.java
index 9024e18..df910be 100644
--- a/hyracks/hyracks-control/hyracks-control-nc/src/main/java/edu/uci/ics/hyracks/control/nc/net/NetworkOutputChannel.java
+++ b/hyracks/hyracks-comm/src/main/java/edu/uci/ics/hyracks/comm/channels/NetworkOutputChannel.java
@@ -12,7 +12,7 @@
  * See the License for the specific language governing permissions and
  * limitations under the License.
  */
-package edu.uci.ics.hyracks.control.nc.net;
+package edu.uci.ics.hyracks.comm.channels;
 
 import java.nio.ByteBuffer;
 import java.util.ArrayDeque;
@@ -87,7 +87,7 @@
         ccb.getWriteInterface().getFullBufferAcceptor().close();
     }
 
-    void abort() {
+    public void abort() {
         ccb.getWriteInterface().getFullBufferAcceptor().error(1);
         synchronized (NetworkOutputChannel.this) {
             aborted = true;
diff --git a/hyracks/hyracks-control/hyracks-control-cc/src/main/java/edu/uci/ics/hyracks/control/cc/ClusterControllerService.java b/hyracks/hyracks-control/hyracks-control-cc/src/main/java/edu/uci/ics/hyracks/control/cc/ClusterControllerService.java
index 5a33891..82457fe 100644
--- a/hyracks/hyracks-control/hyracks-control-cc/src/main/java/edu/uci/ics/hyracks/control/cc/ClusterControllerService.java
+++ b/hyracks/hyracks-control/hyracks-control-cc/src/main/java/edu/uci/ics/hyracks/control/cc/ClusterControllerService.java
@@ -35,12 +35,17 @@
 import edu.uci.ics.hyracks.api.client.ClusterControllerInfo;
 import edu.uci.ics.hyracks.api.client.HyracksClientInterfaceFunctions;
 import edu.uci.ics.hyracks.api.client.NodeControllerInfo;
+import edu.uci.ics.hyracks.api.comm.NetworkAddress;
 import edu.uci.ics.hyracks.api.context.ICCContext;
+import edu.uci.ics.hyracks.api.dataset.DatasetDirectoryRecord;
+import edu.uci.ics.hyracks.api.dataset.DatasetDirectoryRecord.Status;
+import edu.uci.ics.hyracks.api.dataset.IDatasetDirectoryService;
 import edu.uci.ics.hyracks.api.job.JobId;
 import edu.uci.ics.hyracks.api.job.JobStatus;
 import edu.uci.ics.hyracks.api.topology.ClusterTopology;
 import edu.uci.ics.hyracks.api.topology.TopologyDefinitionParser;
 import edu.uci.ics.hyracks.control.cc.application.CCApplicationContext;
+import edu.uci.ics.hyracks.control.cc.dataset.DatasetDirectoryService;
 import edu.uci.ics.hyracks.control.cc.job.JobRun;
 import edu.uci.ics.hyracks.control.cc.web.WebServer;
 import edu.uci.ics.hyracks.control.cc.work.ApplicationCreateWork;
@@ -48,17 +53,23 @@
 import edu.uci.ics.hyracks.control.cc.work.ApplicationMessageWork;
 import edu.uci.ics.hyracks.control.cc.work.ApplicationStartWork;
 import edu.uci.ics.hyracks.control.cc.work.ApplicationStateChangeWork;
+import edu.uci.ics.hyracks.control.cc.work.GetDatasetDirectoryServiceInfoWork;
 import edu.uci.ics.hyracks.control.cc.work.GetIpAddressNodeNameMapWork;
 import edu.uci.ics.hyracks.control.cc.work.GetJobStatusWork;
 import edu.uci.ics.hyracks.control.cc.work.GetNodeControllersInfoWork;
+import edu.uci.ics.hyracks.control.cc.work.GetResultPartitionLocationsWork;
+import edu.uci.ics.hyracks.control.cc.work.GetResultStatusWork;
 import edu.uci.ics.hyracks.control.cc.work.JobStartWork;
 import edu.uci.ics.hyracks.control.cc.work.JobletCleanupNotificationWork;
 import edu.uci.ics.hyracks.control.cc.work.NodeHeartbeatWork;
 import edu.uci.ics.hyracks.control.cc.work.RegisterNodeWork;
 import edu.uci.ics.hyracks.control.cc.work.RegisterPartitionAvailibilityWork;
 import edu.uci.ics.hyracks.control.cc.work.RegisterPartitionRequestWork;
+import edu.uci.ics.hyracks.control.cc.work.RegisterResultPartitionLocationWork;
 import edu.uci.ics.hyracks.control.cc.work.RemoveDeadNodesWork;
 import edu.uci.ics.hyracks.control.cc.work.ReportProfilesWork;
+import edu.uci.ics.hyracks.control.cc.work.ReportResultPartitionFailureWork;
+import edu.uci.ics.hyracks.control.cc.work.ReportResultPartitionWriteCompletionWork;
 import edu.uci.ics.hyracks.control.cc.work.TaskCompleteWork;
 import edu.uci.ics.hyracks.control.cc.work.TaskFailureWork;
 import edu.uci.ics.hyracks.control.cc.work.UnregisterNodeWork;
@@ -115,6 +126,8 @@
 
     private final DeadNodeSweeper sweeper;
 
+    private final IDatasetDirectoryService datasetDirectoryService;
+
     private long jobCounter;
 
     public ClusterControllerService(final CCConfig ccConfig) throws Exception {
@@ -162,6 +175,7 @@
             }
         };
         sweeper = new DeadNodeSweeper();
+        datasetDirectoryService = new DatasetDirectoryService();
         jobCounter = 0;
     }
 
@@ -264,6 +278,10 @@
         return clusterIPC;
     }
 
+    public NetworkAddress getDatasetDirectoryServiceInfo() {
+        return new NetworkAddress(ccConfig.clientNetIpAddress.getBytes(), ccConfig.clientNetPort);
+    }
+
     private class DeadNodeSweeper extends TimerTask {
         @Override
         public void run() {
@@ -271,6 +289,10 @@
         }
     }
 
+    public IDatasetDirectoryService getDatasetDirectoryService() {
+        return datasetDirectoryService;
+    }
+
     private class HyracksClientInterfaceIPCI implements IIPCI {
         @Override
         public void deliverIncomingMessage(IIPCHandle handle, long mid, long rmid, Object payload, Exception exception) {
@@ -321,6 +343,27 @@
                     return;
                 }
 
+                case GET_DATASET_DIRECTORY_SERIVICE_INFO: {
+                    workQueue.schedule(new GetDatasetDirectoryServiceInfoWork(ClusterControllerService.this,
+                            new IPCResponder<NetworkAddress>(handle, mid)));
+                    return;
+                }
+
+                case GET_DATASET_RESULT_STATUS: {
+                    HyracksClientInterfaceFunctions.GetDatasetResultStatusFunction gdrlf = (HyracksClientInterfaceFunctions.GetDatasetResultStatusFunction) fn;
+                    workQueue.schedule(new GetResultStatusWork(ClusterControllerService.this, gdrlf.getJobId(), gdrlf
+                            .getResultSetId(), new IPCResponder<Status>(handle, mid)));
+                    return;
+                }
+
+                case GET_DATASET_RESULT_LOCATIONS: {
+                    HyracksClientInterfaceFunctions.GetDatasetResultLocationsFunction gdrlf = (HyracksClientInterfaceFunctions.GetDatasetResultLocationsFunction) fn;
+                    workQueue.schedule(new GetResultPartitionLocationsWork(ClusterControllerService.this, gdrlf
+                            .getJobId(), gdrlf.getResultSetId(), gdrlf.getKnownRecords(),
+                            new IPCResponder<DatasetDirectoryRecord[]>(handle, mid)));
+                    return;
+                }
+
                 case WAIT_FOR_COMPLETION: {
                     HyracksClientInterfaceFunctions.WaitForCompletionFunction wfcf = (HyracksClientInterfaceFunctions.WaitForCompletionFunction) fn;
                     workQueue.schedule(new WaitForJobCompletionWork(ClusterControllerService.this, wfcf.getJobId(),
@@ -416,6 +459,28 @@
                     return;
                 }
 
+                case REGISTER_RESULT_PARTITION_LOCATION: {
+                    CCNCFunctions.RegisterResultPartitionLocationFunction rrplf = (CCNCFunctions.RegisterResultPartitionLocationFunction) fn;
+                    workQueue.schedule(new RegisterResultPartitionLocationWork(ClusterControllerService.this, rrplf
+                            .getJobId(), rrplf.getResultSetId(), rrplf.getOrderedResult(), rrplf.getPartition(), rrplf
+                            .getNPartitions(), rrplf.getNetworkAddress()));
+                    return;
+                }
+
+                case REPORT_RESULT_PARTITION_WRITE_COMPLETION: {
+                    CCNCFunctions.ReportResultPartitionWriteCompletionFunction rrplf = (CCNCFunctions.ReportResultPartitionWriteCompletionFunction) fn;
+                    workQueue.schedule(new ReportResultPartitionWriteCompletionWork(ClusterControllerService.this,
+                            rrplf.getJobId(), rrplf.getResultSetId(), rrplf.getPartition()));
+                    return;
+                }
+
+                case REPORT_RESULT_PARTITION_FAILURE: {
+                    CCNCFunctions.ReportResultPartitionFailureFunction rrplf = (CCNCFunctions.ReportResultPartitionFailureFunction) fn;
+                    workQueue.schedule(new ReportResultPartitionFailureWork(ClusterControllerService.this, rrplf
+                            .getJobId(), rrplf.getResultSetId(), rrplf.getPartition()));
+                    return;
+                }
+
                 case APPLICATION_STATE_CHANGE_RESPONSE: {
                     CCNCFunctions.ApplicationStateChangeResponseFunction astrf = (CCNCFunctions.ApplicationStateChangeResponseFunction) fn;
                     workQueue.schedule(new ApplicationStateChangeWork(ClusterControllerService.this, astrf));
diff --git a/hyracks/hyracks-control/hyracks-control-cc/src/main/java/edu/uci/ics/hyracks/control/cc/NodeControllerState.java b/hyracks/hyracks-control/hyracks-control-cc/src/main/java/edu/uci/ics/hyracks/control/cc/NodeControllerState.java
index c17acd0..c96a319 100644
--- a/hyracks/hyracks-control/hyracks-control-cc/src/main/java/edu/uci/ics/hyracks/control/cc/NodeControllerState.java
+++ b/hyracks/hyracks-control/hyracks-control-cc/src/main/java/edu/uci/ics/hyracks/control/cc/NodeControllerState.java
@@ -41,6 +41,8 @@
 
     private final NetworkAddress dataPort;
 
+    private final NetworkAddress datasetPort;
+
     private final Set<JobId> activeJobIds;
 
     private final String osName;
@@ -107,6 +109,14 @@
 
     private final long[] netSignalingBytesWritten;
 
+    private final long[] datasetNetPayloadBytesRead;
+
+    private final long[] datasetNetPayloadBytesWritten;
+
+    private final long[] datasetNetSignalingBytesRead;
+
+    private final long[] datasetNetSignalingBytesWritten;
+
     private final long[] ipcMessagesSent;
 
     private final long[] ipcMessageBytesSent;
@@ -123,6 +133,7 @@
         this.nodeController = nodeController;
         ncConfig = reg.getNCConfig();
         dataPort = reg.getDataPort();
+        datasetPort = reg.getDatasetPort();
         activeJobIds = new HashSet<JobId>();
 
         osName = reg.getOSName();
@@ -164,6 +175,10 @@
         netPayloadBytesWritten = new long[RRD_SIZE];
         netSignalingBytesRead = new long[RRD_SIZE];
         netSignalingBytesWritten = new long[RRD_SIZE];
+        datasetNetPayloadBytesRead = new long[RRD_SIZE];
+        datasetNetPayloadBytesWritten = new long[RRD_SIZE];
+        datasetNetSignalingBytesRead = new long[RRD_SIZE];
+        datasetNetSignalingBytesWritten = new long[RRD_SIZE];
         ipcMessagesSent = new long[RRD_SIZE];
         ipcMessageBytesSent = new long[RRD_SIZE];
         ipcMessagesReceived = new long[RRD_SIZE];
@@ -196,6 +211,10 @@
         netPayloadBytesWritten[rrdPtr] = hbData.netPayloadBytesWritten;
         netSignalingBytesRead[rrdPtr] = hbData.netSignalingBytesRead;
         netSignalingBytesWritten[rrdPtr] = hbData.netSignalingBytesWritten;
+        datasetNetPayloadBytesRead[rrdPtr] = hbData.datasetNetPayloadBytesRead;
+        datasetNetPayloadBytesWritten[rrdPtr] = hbData.datasetNetPayloadBytesWritten;
+        datasetNetSignalingBytesRead[rrdPtr] = hbData.datasetNetSignalingBytesRead;
+        datasetNetSignalingBytesWritten[rrdPtr] = hbData.datasetNetSignalingBytesWritten;
         ipcMessagesSent[rrdPtr] = hbData.ipcMessagesSent;
         ipcMessageBytesSent[rrdPtr] = hbData.ipcMessageBytesSent;
         ipcMessagesReceived[rrdPtr] = hbData.ipcMessagesReceived;
@@ -227,6 +246,10 @@
         return dataPort;
     }
 
+    public NetworkAddress getDatasetPort() {
+        return datasetPort;
+    }
+
     public JSONObject toSummaryJSON() throws JSONException {
         JSONObject o = new JSONObject();
         o.put("node-id", ncConfig.nodeId);
@@ -271,6 +294,10 @@
         o.put("net-payload-bytes-written", netPayloadBytesWritten);
         o.put("net-signaling-bytes-read", netSignalingBytesRead);
         o.put("net-signaling-bytes-written", netSignalingBytesWritten);
+        o.put("dataset-net-payload-bytes-read", datasetNetPayloadBytesRead);
+        o.put("dataset-net-payload-bytes-written", datasetNetPayloadBytesWritten);
+        o.put("dataset-net-signaling-bytes-read", datasetNetSignalingBytesRead);
+        o.put("dataset-net-signaling-bytes-written", datasetNetSignalingBytesWritten);
         o.put("ipc-messages-sent", ipcMessagesSent);
         o.put("ipc-message-bytes-sent", ipcMessageBytesSent);
         o.put("ipc-messages-received", ipcMessagesReceived);
diff --git a/hyracks/hyracks-control/hyracks-control-cc/src/main/java/edu/uci/ics/hyracks/control/cc/dataset/DatasetDirectoryService.java b/hyracks/hyracks-control/hyracks-control-cc/src/main/java/edu/uci/ics/hyracks/control/cc/dataset/DatasetDirectoryService.java
new file mode 100644
index 0000000..13d0c30
--- /dev/null
+++ b/hyracks/hyracks-control/hyracks-control-cc/src/main/java/edu/uci/ics/hyracks/control/cc/dataset/DatasetDirectoryService.java
@@ -0,0 +1,241 @@
+/*
+ * Copyright 2009-2010 by The Regents of the University of California
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * you may obtain a copy of the License from
+ * 
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ * 
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+package edu.uci.ics.hyracks.control.cc.dataset;
+
+import java.util.ArrayList;
+import java.util.Arrays;
+import java.util.HashMap;
+import java.util.Map;
+
+import edu.uci.ics.hyracks.api.comm.NetworkAddress;
+import edu.uci.ics.hyracks.api.dataset.DatasetDirectoryRecord;
+import edu.uci.ics.hyracks.api.dataset.DatasetDirectoryRecord.Status;
+import edu.uci.ics.hyracks.api.dataset.IDatasetDirectoryService;
+import edu.uci.ics.hyracks.api.dataset.ResultSetId;
+import edu.uci.ics.hyracks.api.exceptions.HyracksDataException;
+import edu.uci.ics.hyracks.api.job.JobId;
+
+/**
+ * TODO(madhusudancs): The potential perils of this global dataset directory service implementation is that, the jobs
+ * location information is never evicted from the memory and the memory usage grows as the number of jobs in the system
+ * grows. What we should possibly do is, add an API call for the client to say that it received everything it has to for
+ * the job (after it receives all the results) completely. Then we can just get rid of the location information for that
+ * job.
+ */
+public class DatasetDirectoryService implements IDatasetDirectoryService {
+    private final Map<JobId, Map<ResultSetId, ResultSetMetaData>> jobResultLocationsMap;
+
+    public DatasetDirectoryService() {
+        jobResultLocationsMap = new HashMap<JobId, Map<ResultSetId, ResultSetMetaData>>();
+    }
+
+    @Override
+    public synchronized void registerResultPartitionLocation(JobId jobId, ResultSetId rsId, boolean orderedResult,
+            int partition, int nPartitions, NetworkAddress networkAddress) {
+        Map<ResultSetId, ResultSetMetaData> rsMap = jobResultLocationsMap.get(jobId);
+        if (rsMap == null) {
+            rsMap = new HashMap<ResultSetId, ResultSetMetaData>();
+            jobResultLocationsMap.put(jobId, rsMap);
+        }
+
+        ResultSetMetaData resultSetMetaData = rsMap.get(rsId);
+        if (resultSetMetaData == null) {
+            resultSetMetaData = new ResultSetMetaData(orderedResult, new DatasetDirectoryRecord[nPartitions]);
+            rsMap.put(rsId, resultSetMetaData);
+        }
+
+        DatasetDirectoryRecord[] records = resultSetMetaData.getRecords();
+        if (records[partition] == null) {
+            records[partition] = new DatasetDirectoryRecord();
+        }
+        records[partition].setNetworkAddress(networkAddress);
+        records[partition].start();
+        notifyAll();
+    }
+
+    @Override
+    public synchronized void reportResultPartitionWriteCompletion(JobId jobId, ResultSetId rsId, int partition) {
+        DatasetDirectoryRecord ddr = getDatasetDirectoryRecord(jobId, rsId, partition);
+        ddr.writeEOS();
+    }
+
+    @Override
+    public synchronized void reportResultPartitionFailure(JobId jobId, ResultSetId rsId, int partition) {
+        DatasetDirectoryRecord ddr = getDatasetDirectoryRecord(jobId, rsId, partition);
+        ddr.fail();
+    }
+
+    @Override
+    public synchronized Status getResultStatus(JobId jobId, ResultSetId rsId) throws HyracksDataException {
+        Map<ResultSetId, ResultSetMetaData> rsMap;
+        while ((rsMap = jobResultLocationsMap.get(jobId)) == null) {
+            try {
+                wait();
+            } catch (InterruptedException e) {
+                throw new HyracksDataException(e);
+            }
+        }
+
+        ResultSetMetaData resultSetMetaData = rsMap.get(rsId);
+        if (resultSetMetaData == null || resultSetMetaData.getRecords() == null) {
+            throw new HyracksDataException("ResultSet locations uninitialized when it is expected to be initialized.");
+        }
+        DatasetDirectoryRecord[] records = resultSetMetaData.getRecords();
+
+        ArrayList<Status> statuses = new ArrayList<Status>(records.length);
+        for (int i = 0; i < records.length; i++) {
+            statuses.add(records[i].getStatus());
+        }
+
+        // Default status is idle
+        Status status = Status.IDLE;
+        if (statuses.contains(Status.FAILED)) {
+            // Even if there is at least one failed entry we should return failed status.
+            return Status.FAILED;
+        } else if (statuses.contains(Status.RUNNING)) {
+            // If there are not failed entry and if there is at least one running entry we should return running status.
+            return Status.RUNNING;
+        } else {
+            // If each and every partition has reported success do we report success as the status.
+            int successCount = 0;
+            for (int i = 0; i < statuses.size(); i++) {
+                if (statuses.get(i) == Status.SUCCESS) {
+                    successCount++;
+                }
+            }
+            if (successCount == statuses.size()) {
+                return Status.SUCCESS;
+            }
+        }
+        return status;
+    }
+
+    @Override
+    public synchronized DatasetDirectoryRecord[] getResultPartitionLocations(JobId jobId, ResultSetId rsId,
+            DatasetDirectoryRecord[] knownRecords) throws HyracksDataException {
+        DatasetDirectoryRecord[] newRecords;
+        while ((newRecords = updatedRecords(jobId, rsId, knownRecords)) == null) {
+            try {
+                wait();
+            } catch (InterruptedException e) {
+                throw new HyracksDataException(e);
+            }
+        }
+        return newRecords;
+    }
+
+    public DatasetDirectoryRecord getDatasetDirectoryRecord(JobId jobId, ResultSetId rsId, int partition) {
+        Map<ResultSetId, ResultSetMetaData> rsMap = jobResultLocationsMap.get(jobId);
+        ResultSetMetaData resultSetMetaData = rsMap.get(rsId);
+        DatasetDirectoryRecord[] records = resultSetMetaData.getRecords();
+        return records[partition];
+    }
+
+    /**
+     * Compares the records already known by the client for the given job's result set id with the records that the
+     * dataset directory service knows and if there are any newly discovered records returns a whole array with the
+     * new records filled in.
+     * This method has a very convoluted logic. Here is the explanation of how it works.
+     * If the ordering constraint has to be enforced, the method obtains the first null record in the known records in
+     * the order of the partitions. It always traverses the array in the first to last order!
+     * If known records array or the first element in that array is null in the but the record for that partition now
+     * known to the directory service, the method fills in that record in the array and returns the array back.
+     * However, if the first known null record is not a first element in the array, by induction, all the previous
+     * known records should be known already be known to client and none of the records for the partitions ahead is
+     * known by the client yet. So, we check if the client has reached the end of stream for the partition corresponding
+     * to the record before the first known null record, i.e. the last known non-null record. If not, we just return
+     * null because we cannot expose any new locations until the client reaches end of stream for the last known record.
+     * If the client has reached the end of stream record for the last known non-null record, we check if the next record
+     * is discovered by the dataset directory service and if so, we fill it in the records array and return it back or
+     * send null otherwise.
+     * If the ordering is not required, we are free to return any newly discovered records back, so we just check if
+     * arrays are equal and if they are not we send the entire new updated array.
+     * 
+     * @param jobId
+     *            - Id of the job for which the directory records should be retrieved.
+     * @param rsId
+     *            - Id of the result set for which the directory records should be retrieved.
+     * @param knownRecords
+     *            - An array of directory records that the client is already aware of.
+     * @return
+     *         - Returns null if there aren't any newly discovered partitions enforcing the ordering constraint
+     * @throws HyracksDataException
+     *             TODO(madhusudancs): Think about caching (and still be stateless) instead of this ugly O(n) iterations for
+     *             every check. This already looks very expensive.
+     */
+    private DatasetDirectoryRecord[] updatedRecords(JobId jobId, ResultSetId rsId, DatasetDirectoryRecord[] knownRecords)
+            throws HyracksDataException {
+        Map<ResultSetId, ResultSetMetaData> rsMap = jobResultLocationsMap.get(jobId);
+        if (rsMap == null) {
+            return null;
+        }
+
+        ResultSetMetaData resultSetMetaData = rsMap.get(rsId);
+        if (resultSetMetaData == null || resultSetMetaData.getRecords() == null) {
+            throw new HyracksDataException("ResultSet locations uninitialized when it is expected to be initialized.");
+        }
+
+        boolean ordered = resultSetMetaData.getOrderedResult();
+        DatasetDirectoryRecord[] records = resultSetMetaData.getRecords();
+        /* If ordering is required, we should expose the dataset directory records only in the order, otherwise
+         * we can simply check if there are any newly discovered records and send the whole array back if there are.
+         */
+        if (ordered) {
+            // Iterate over the known records and find the last record which is not null.
+            int i = 0;
+            for (i = 0; i < records.length; i++) {
+                if (knownRecords == null) {
+                    if (records[0] != null) {
+                        knownRecords = new DatasetDirectoryRecord[records.length];
+                        knownRecords[0] = records[0];
+                        return knownRecords;
+                    }
+                    return null;
+                }
+                if (knownRecords[i] == null) {
+                    if ((i == 0 || knownRecords[i - 1].hasReachedReadEOS()) && records[i] != null) {
+                        knownRecords[i] = records[i];
+                        return knownRecords;
+                    }
+                    return null;
+                }
+            }
+        } else {
+            if (!Arrays.equals(records, knownRecords)) {
+                return records;
+            }
+        }
+        return null;
+    }
+
+    private class ResultSetMetaData {
+        private final boolean ordered;
+
+        private final DatasetDirectoryRecord[] records;
+
+        public ResultSetMetaData(boolean ordered, DatasetDirectoryRecord[] records) {
+            this.ordered = ordered;
+            this.records = records;
+        }
+
+        public boolean getOrderedResult() {
+            return ordered;
+        }
+
+        public DatasetDirectoryRecord[] getRecords() {
+            return records;
+        }
+    }
+}
\ No newline at end of file
diff --git a/hyracks/hyracks-control/hyracks-control-cc/src/main/java/edu/uci/ics/hyracks/control/cc/work/GetDatasetDirectoryServiceInfoWork.java b/hyracks/hyracks-control/hyracks-control-cc/src/main/java/edu/uci/ics/hyracks/control/cc/work/GetDatasetDirectoryServiceInfoWork.java
new file mode 100644
index 0000000..3ac6acc
--- /dev/null
+++ b/hyracks/hyracks-control/hyracks-control-cc/src/main/java/edu/uci/ics/hyracks/control/cc/work/GetDatasetDirectoryServiceInfoWork.java
@@ -0,0 +1,41 @@
+/*
+ * Copyright 2009-2010 by The Regents of the University of California
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * you may obtain a copy of the License from
+ * 
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ * 
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+package edu.uci.ics.hyracks.control.cc.work;
+
+import edu.uci.ics.hyracks.api.comm.NetworkAddress;
+import edu.uci.ics.hyracks.control.cc.ClusterControllerService;
+import edu.uci.ics.hyracks.control.common.work.IResultCallback;
+import edu.uci.ics.hyracks.control.common.work.SynchronizableWork;
+
+public class GetDatasetDirectoryServiceInfoWork extends SynchronizableWork {
+    private final ClusterControllerService ccs;
+
+    private final IResultCallback<NetworkAddress> callback;
+
+    public GetDatasetDirectoryServiceInfoWork(ClusterControllerService ccs, IResultCallback<NetworkAddress> callback) {
+        this.ccs = ccs;
+        this.callback = callback;
+    }
+
+    @Override
+    public void doRun() {
+        try {
+            NetworkAddress addr = ccs.getDatasetDirectoryServiceInfo();
+            callback.setValue(addr);
+        } catch (Exception e) {
+            callback.setException(e);
+        }
+    }
+}
\ No newline at end of file
diff --git a/hyracks/hyracks-control/hyracks-control-cc/src/main/java/edu/uci/ics/hyracks/control/cc/work/GetNodeControllersInfoWork.java b/hyracks/hyracks-control/hyracks-control-cc/src/main/java/edu/uci/ics/hyracks/control/cc/work/GetNodeControllersInfoWork.java
index 2f23a2c..a787b9f 100644
--- a/hyracks/hyracks-control/hyracks-control-cc/src/main/java/edu/uci/ics/hyracks/control/cc/work/GetNodeControllersInfoWork.java
+++ b/hyracks/hyracks-control/hyracks-control-cc/src/main/java/edu/uci/ics/hyracks/control/cc/work/GetNodeControllersInfoWork.java
@@ -39,7 +39,8 @@
         Map<String, NodeControllerInfo> result = new LinkedHashMap<String, NodeControllerInfo>();
         Map<String, NodeControllerState> nodeMap = ccs.getNodeMap();
         for (Map.Entry<String, NodeControllerState> e : nodeMap.entrySet()) {
-            result.put(e.getKey(), new NodeControllerInfo(e.getKey(), NodeStatus.ALIVE, e.getValue().getDataPort()));
+            result.put(e.getKey(), new NodeControllerInfo(e.getKey(), NodeStatus.ALIVE, e.getValue().getDataPort(), e
+                    .getValue().getDatasetPort()));
         }
         callback.setValue(result);
     }
diff --git a/hyracks/hyracks-control/hyracks-control-cc/src/main/java/edu/uci/ics/hyracks/control/cc/work/GetResultPartitionLocationsWork.java b/hyracks/hyracks-control/hyracks-control-cc/src/main/java/edu/uci/ics/hyracks/control/cc/work/GetResultPartitionLocationsWork.java
new file mode 100644
index 0000000..fd1d418
--- /dev/null
+++ b/hyracks/hyracks-control/hyracks-control-cc/src/main/java/edu/uci/ics/hyracks/control/cc/work/GetResultPartitionLocationsWork.java
@@ -0,0 +1,62 @@
+/*
+ * Copyright 2009-2010 by The Regents of the University of California
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * you may obtain a copy of the License from
+ * 
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ * 
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+package edu.uci.ics.hyracks.control.cc.work;
+
+import edu.uci.ics.hyracks.api.dataset.DatasetDirectoryRecord;
+import edu.uci.ics.hyracks.api.dataset.IDatasetDirectoryService;
+import edu.uci.ics.hyracks.api.dataset.ResultSetId;
+import edu.uci.ics.hyracks.api.exceptions.HyracksDataException;
+import edu.uci.ics.hyracks.api.job.JobId;
+import edu.uci.ics.hyracks.control.cc.ClusterControllerService;
+import edu.uci.ics.hyracks.control.common.work.IResultCallback;
+import edu.uci.ics.hyracks.control.common.work.SynchronizableWork;
+
+public class GetResultPartitionLocationsWork extends SynchronizableWork {
+    private final ClusterControllerService ccs;
+
+    private final JobId jobId;
+
+    private final ResultSetId rsId;
+
+    private final DatasetDirectoryRecord[] knownRecords;
+
+    private final IResultCallback<DatasetDirectoryRecord[]> callback;
+
+    public GetResultPartitionLocationsWork(ClusterControllerService ccs, JobId jobId, ResultSetId rsId,
+            DatasetDirectoryRecord[] knownRecords, IResultCallback<DatasetDirectoryRecord[]> callback) {
+        this.ccs = ccs;
+        this.jobId = jobId;
+        this.rsId = rsId;
+        this.knownRecords = knownRecords;
+        this.callback = callback;
+    }
+
+    @Override
+    public void doRun() {
+        final IDatasetDirectoryService dds = ccs.getDatasetDirectoryService();
+        ccs.getExecutor().execute(new Runnable() {
+            @Override
+            public void run() {
+                try {
+                    DatasetDirectoryRecord[] partitionLocations = dds.getResultPartitionLocations(jobId, rsId,
+                            knownRecords);
+                    callback.setValue(partitionLocations);
+                } catch (HyracksDataException e) {
+                    callback.setException(e);
+                }
+            }
+        });
+    }
+}
\ No newline at end of file
diff --git a/hyracks/hyracks-control/hyracks-control-cc/src/main/java/edu/uci/ics/hyracks/control/cc/work/GetResultStatusWork.java b/hyracks/hyracks-control/hyracks-control-cc/src/main/java/edu/uci/ics/hyracks/control/cc/work/GetResultStatusWork.java
new file mode 100644
index 0000000..d2dadf5
--- /dev/null
+++ b/hyracks/hyracks-control/hyracks-control-cc/src/main/java/edu/uci/ics/hyracks/control/cc/work/GetResultStatusWork.java
@@ -0,0 +1,56 @@
+/*
+ * Copyright 2009-2010 by The Regents of the University of California
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * you may obtain a copy of the License from
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+package edu.uci.ics.hyracks.control.cc.work;
+
+import edu.uci.ics.hyracks.api.dataset.DatasetDirectoryRecord.Status;
+import edu.uci.ics.hyracks.api.dataset.ResultSetId;
+import edu.uci.ics.hyracks.api.exceptions.HyracksDataException;
+import edu.uci.ics.hyracks.api.job.JobId;
+import edu.uci.ics.hyracks.control.cc.ClusterControllerService;
+import edu.uci.ics.hyracks.control.common.work.IResultCallback;
+import edu.uci.ics.hyracks.control.common.work.SynchronizableWork;
+
+public class GetResultStatusWork extends SynchronizableWork {
+    private final ClusterControllerService ccs;
+
+    private final JobId jobId;
+
+    private final ResultSetId rsId;
+
+    private final IResultCallback<Status> callback;
+
+    public GetResultStatusWork(ClusterControllerService ccs, JobId jobId, ResultSetId rsId,
+            IResultCallback<Status> callback) {
+        this.ccs = ccs;
+        this.jobId = jobId;
+        this.rsId = rsId;
+        this.callback = callback;
+    }
+
+    @Override
+    public void doRun() {
+        try {
+            Status status = ccs.getDatasetDirectoryService().getResultStatus(jobId, rsId);
+            callback.setValue(status);
+        } catch (HyracksDataException e) {
+            callback.setException(e);
+        }
+    }
+
+    @Override
+    public String toString() {
+        return "JobId@" + jobId + " ResultSetId@" + rsId;
+    }
+}
diff --git a/hyracks/hyracks-control/hyracks-control-cc/src/main/java/edu/uci/ics/hyracks/control/cc/work/JobStartWork.java b/hyracks/hyracks-control/hyracks-control-cc/src/main/java/edu/uci/ics/hyracks/control/cc/work/JobStartWork.java
index b6a33cd..b062d33 100644
--- a/hyracks/hyracks-control/hyracks-control-cc/src/main/java/edu/uci/ics/hyracks/control/cc/work/JobStartWork.java
+++ b/hyracks/hyracks-control/hyracks-control-cc/src/main/java/edu/uci/ics/hyracks/control/cc/work/JobStartWork.java
@@ -16,6 +16,7 @@
 
 import java.util.EnumSet;
 
+import edu.uci.ics.hyracks.api.dataset.IDatasetDirectoryService;
 import edu.uci.ics.hyracks.api.exceptions.HyracksException;
 import edu.uci.ics.hyracks.api.job.IActivityClusterGraphGenerator;
 import edu.uci.ics.hyracks.api.job.IActivityClusterGraphGeneratorFactory;
diff --git a/hyracks/hyracks-control/hyracks-control-cc/src/main/java/edu/uci/ics/hyracks/control/cc/work/RegisterResultPartitionLocationWork.java b/hyracks/hyracks-control/hyracks-control-cc/src/main/java/edu/uci/ics/hyracks/control/cc/work/RegisterResultPartitionLocationWork.java
new file mode 100644
index 0000000..f86e924
--- /dev/null
+++ b/hyracks/hyracks-control/hyracks-control-cc/src/main/java/edu/uci/ics/hyracks/control/cc/work/RegisterResultPartitionLocationWork.java
@@ -0,0 +1,60 @@
+/*
+ * Copyright 2009-2010 by The Regents of the University of California
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * you may obtain a copy of the License from
+ * 
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ * 
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+package edu.uci.ics.hyracks.control.cc.work;
+
+import edu.uci.ics.hyracks.api.comm.NetworkAddress;
+import edu.uci.ics.hyracks.api.dataset.ResultSetId;
+import edu.uci.ics.hyracks.api.job.JobId;
+import edu.uci.ics.hyracks.control.cc.ClusterControllerService;
+import edu.uci.ics.hyracks.control.common.work.AbstractWork;
+
+public class RegisterResultPartitionLocationWork extends AbstractWork {
+    private final ClusterControllerService ccs;
+
+    private final JobId jobId;
+
+    private final ResultSetId rsId;
+
+    private final boolean orderedResult;
+
+    private final int partition;
+
+    private final int nPartitions;
+
+    private final NetworkAddress networkAddress;
+
+    public RegisterResultPartitionLocationWork(ClusterControllerService ccs, JobId jobId, ResultSetId rsId,
+            boolean orderedResult, int partition, int nPartitions, NetworkAddress networkAddress) {
+        this.ccs = ccs;
+        this.jobId = jobId;
+        this.rsId = rsId;
+        this.orderedResult = orderedResult;
+        this.partition = partition;
+        this.nPartitions = nPartitions;
+        this.networkAddress = networkAddress;
+    }
+
+    @Override
+    public void run() {
+        ccs.getDatasetDirectoryService().registerResultPartitionLocation(jobId, rsId, orderedResult, partition,
+                nPartitions, networkAddress);
+    }
+
+    @Override
+    public String toString() {
+        return "JobId@" + jobId + " ResultSetId@" + rsId + " Partition@" + partition + " NPartitions@" + nPartitions
+                + " ResultPartitionLocation@" + networkAddress + " OrderedResult@" + orderedResult;
+    }
+}
\ No newline at end of file
diff --git a/hyracks/hyracks-control/hyracks-control-cc/src/main/java/edu/uci/ics/hyracks/control/cc/work/ReportResultPartitionFailureWork.java b/hyracks/hyracks-control/hyracks-control-cc/src/main/java/edu/uci/ics/hyracks/control/cc/work/ReportResultPartitionFailureWork.java
new file mode 100644
index 0000000..4aea41e
--- /dev/null
+++ b/hyracks/hyracks-control/hyracks-control-cc/src/main/java/edu/uci/ics/hyracks/control/cc/work/ReportResultPartitionFailureWork.java
@@ -0,0 +1,47 @@
+/*
+ * Copyright 2009-2010 by The Regents of the University of California
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * you may obtain a copy of the License from
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+package edu.uci.ics.hyracks.control.cc.work;
+
+import edu.uci.ics.hyracks.api.dataset.ResultSetId;
+import edu.uci.ics.hyracks.api.job.JobId;
+import edu.uci.ics.hyracks.control.cc.ClusterControllerService;
+import edu.uci.ics.hyracks.control.common.work.AbstractWork;
+
+public class ReportResultPartitionFailureWork extends AbstractWork {
+    private final ClusterControllerService ccs;
+
+    private final JobId jobId;
+
+    private final ResultSetId rsId;
+
+    private final int partition;
+
+    public ReportResultPartitionFailureWork(ClusterControllerService ccs, JobId jobId, ResultSetId rsId, int partition) {
+        this.ccs = ccs;
+        this.jobId = jobId;
+        this.rsId = rsId;
+        this.partition = partition;
+    }
+
+    @Override
+    public void run() {
+        ccs.getDatasetDirectoryService().reportResultPartitionFailure(jobId, rsId, partition);
+    }
+
+    @Override
+    public String toString() {
+        return "JobId@" + jobId + " ResultSetId@" + rsId + " Partition@" + partition;
+    }
+}
diff --git a/hyracks/hyracks-control/hyracks-control-cc/src/main/java/edu/uci/ics/hyracks/control/cc/work/ReportResultPartitionWriteCompletionWork.java b/hyracks/hyracks-control/hyracks-control-cc/src/main/java/edu/uci/ics/hyracks/control/cc/work/ReportResultPartitionWriteCompletionWork.java
new file mode 100644
index 0000000..313b730
--- /dev/null
+++ b/hyracks/hyracks-control/hyracks-control-cc/src/main/java/edu/uci/ics/hyracks/control/cc/work/ReportResultPartitionWriteCompletionWork.java
@@ -0,0 +1,48 @@
+/*
+ * Copyright 2009-2010 by The Regents of the University of California
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * you may obtain a copy of the License from
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+package edu.uci.ics.hyracks.control.cc.work;
+
+import edu.uci.ics.hyracks.api.dataset.ResultSetId;
+import edu.uci.ics.hyracks.api.job.JobId;
+import edu.uci.ics.hyracks.control.cc.ClusterControllerService;
+import edu.uci.ics.hyracks.control.common.work.AbstractWork;
+
+public class ReportResultPartitionWriteCompletionWork extends AbstractWork {
+    private final ClusterControllerService ccs;
+
+    private final JobId jobId;
+
+    private final ResultSetId rsId;
+
+    private final int partition;
+
+    public ReportResultPartitionWriteCompletionWork(ClusterControllerService ccs, JobId jobId, ResultSetId rsId,
+            int partition) {
+        this.ccs = ccs;
+        this.jobId = jobId;
+        this.rsId = rsId;
+        this.partition = partition;
+    }
+
+    @Override
+    public void run() {
+        ccs.getDatasetDirectoryService().reportResultPartitionWriteCompletion(jobId, rsId, partition);
+    }
+
+    @Override
+    public String toString() {
+        return "JobId@" + jobId + " ResultSetId@" + rsId + " Partition@" + partition;
+    }
+}
diff --git a/hyracks/hyracks-control/hyracks-control-cc/src/main/resources/static/javascript/adminconsole/NodeDetailsPage.js b/hyracks/hyracks-control/hyracks-control-cc/src/main/resources/static/javascript/adminconsole/NodeDetailsPage.js
index ff9d8a0..3fc46ff 100644
--- a/hyracks/hyracks-control/hyracks-control-cc/src/main/resources/static/javascript/adminconsole/NodeDetailsPage.js
+++ b/hyracks/hyracks-control/hyracks-control-cc/src/main/resources/static/javascript/adminconsole/NodeDetailsPage.js
@@ -58,6 +58,10 @@
         var netPayloadBytesWritten = result['net-payload-bytes-written'];
         var netSignalingBytesRead = result['net-signaling-bytes-read'];
         var netSignalingBytesWritten = result['net-signaling-bytes-written'];
+        var datasetNetPayloadBytesRead = result['dataset-net-payload-bytes-read'];
+        var datasetNetPayloadBytesWritten = result['dataset-net-payload-bytes-written'];
+        var datasetNetSignalingBytesRead = result['dataset-net-signaling-bytes-read'];
+        var datasetNetSignalingBytesWritten = result['dataset-net-signaling-bytes-written'];
         var ipcMessagesSent = result['ipc-messages-sent'];
         var ipcMessageBytesSent = result['ipc-message-bytes-sent'];
         var ipcMessagesReceived = result['ipc-messages-received'];
@@ -117,9 +121,13 @@
             }
             if (i < sysLoad.length - 1) {
                 netPayloadReadBWArray.push([ i, computeRate(netPayloadBytesRead, rrdPtr) ]);
+                netPayloadReadBWArray.push([ i, computeRate(datasetNetPayloadBytesRead, rrdPtr) ]);
                 netPayloadWriteBWArray.push([ i, computeRate(netPayloadBytesWritten, rrdPtr) ]);
+                netPayloadWriteBWArray.push([ i, computeRate(datasetNetPayloadBytesWritten, rrdPtr) ]);
                 netSignalingReadBWArray.push([ i, computeRate(netSignalingBytesRead, rrdPtr) ]);
+                netSignalingReadBWArray.push([ i, computeRate(datasetNetSignalingBytesRead, rrdPtr) ]);
                 netSignalingWriteBWArray.push([ i, computeRate(netSignalingBytesWritten, rrdPtr) ]);
+                netSignalingWriteBWArray.push([ i, computeRate(etSignalingBytesWritten, rrdPtr) ]);
                 ipcMessageSendRateArray.push([ i, computeRate(ipcMessagesSent, rrdPtr) ]);
                 ipcMessageBytesSendRateArray.push([ i, computeRate(ipcMessageBytesSent, rrdPtr) ]);
                 ipcMessageReceiveRateArray.push([ i, computeRate(ipcMessagesReceived, rrdPtr) ]);
diff --git a/hyracks/hyracks-control/hyracks-control-common/src/main/java/edu/uci/ics/hyracks/control/common/base/IClusterController.java b/hyracks/hyracks-control/hyracks-control-common/src/main/java/edu/uci/ics/hyracks/control/common/base/IClusterController.java
index 0c5bb2f..55e4479 100644
--- a/hyracks/hyracks-control/hyracks-control-common/src/main/java/edu/uci/ics/hyracks/control/common/base/IClusterController.java
+++ b/hyracks/hyracks-control/hyracks-control-common/src/main/java/edu/uci/ics/hyracks/control/common/base/IClusterController.java
@@ -16,7 +16,9 @@
 
 import java.util.List;
 
+import edu.uci.ics.hyracks.api.comm.NetworkAddress;
 import edu.uci.ics.hyracks.api.dataflow.TaskAttemptId;
+import edu.uci.ics.hyracks.api.dataset.ResultSetId;
 import edu.uci.ics.hyracks.api.job.JobId;
 import edu.uci.ics.hyracks.control.common.application.ApplicationStatus;
 import edu.uci.ics.hyracks.control.common.controllers.NodeRegistration;
@@ -46,6 +48,13 @@
 
     public void registerPartitionRequest(PartitionRequest partitionRequest) throws Exception;
 
+    public void registerResultPartitionLocation(JobId jobId, ResultSetId rsId, boolean orderedResult, int partition,
+            int nPartitions, NetworkAddress networkAddress) throws Exception;
+
+    public void reportResultPartitionWriteCompletion(JobId jobId, ResultSetId rsId, int partition) throws Exception;
+
+    public void reportResultPartitionFailure(JobId jobId, ResultSetId rsId, int partition) throws Exception;
+
     public void notifyApplicationStateChange(String nodeId, String appName, ApplicationStatus status) throws Exception;
 
     public void sendApplicationMessageToCC(byte[] data, String appName, String nodeId) throws Exception;
diff --git a/hyracks/hyracks-control/hyracks-control-common/src/main/java/edu/uci/ics/hyracks/control/common/controllers/NCConfig.java b/hyracks/hyracks-control/hyracks-control-common/src/main/java/edu/uci/ics/hyracks/control/common/controllers/NCConfig.java
index 167eb4b..9b34810 100644
--- a/hyracks/hyracks-control/hyracks-control-common/src/main/java/edu/uci/ics/hyracks/control/common/controllers/NCConfig.java
+++ b/hyracks/hyracks-control/hyracks-control-common/src/main/java/edu/uci/ics/hyracks/control/common/controllers/NCConfig.java
@@ -37,6 +37,9 @@
     @Option(name = "-data-ip-address", usage = "IP Address to bind data listener", required = true)
     public String dataIPAddress;
 
+    @Option(name = "-result-ip-address", usage = "IP Address to bind dataset result distribution listener", required = true)
+    public String datasetIPAddress;
+
     @Option(name = "-iodevices", usage = "Comma separated list of IO Device mount points (default: One device in default temp folder)", required = false)
     public String ioDevices = System.getProperty("java.io.tmpdir");
 
@@ -66,6 +69,7 @@
         cList.add(nodeId);
         cList.add("-data-ip-address");
         cList.add(dataIPAddress);
+        cList.add(datasetIPAddress);
         cList.add("-iodevices");
         cList.add(ioDevices);
         cList.add("-dcache-client-servers");
diff --git a/hyracks/hyracks-control/hyracks-control-common/src/main/java/edu/uci/ics/hyracks/control/common/controllers/NodeRegistration.java b/hyracks/hyracks-control/hyracks-control-common/src/main/java/edu/uci/ics/hyracks/control/common/controllers/NodeRegistration.java
index 91cfecf..a897602 100644
--- a/hyracks/hyracks-control/hyracks-control-common/src/main/java/edu/uci/ics/hyracks/control/common/controllers/NodeRegistration.java
+++ b/hyracks/hyracks-control/hyracks-control-common/src/main/java/edu/uci/ics/hyracks/control/common/controllers/NodeRegistration.java
@@ -33,6 +33,8 @@
 
     private final NetworkAddress dataPort;
 
+    private final NetworkAddress datasetPort;
+
     private final String osName;
 
     private final String arch;
@@ -60,13 +62,14 @@
     private final HeartbeatSchema hbSchema;
 
     public NodeRegistration(InetSocketAddress ncAddress, String nodeId, NCConfig ncConfig, NetworkAddress dataPort,
-            String osName, String arch, String osVersion, int nProcessors, String vmName, String vmVersion,
-            String vmVendor, String classpath, String libraryPath, String bootClasspath, List<String> inputArguments,
-            Map<String, String> systemProperties, HeartbeatSchema hbSchema) {
+            NetworkAddress datasetPort, String osName, String arch, String osVersion, int nProcessors, String vmName,
+            String vmVersion, String vmVendor, String classpath, String libraryPath, String bootClasspath,
+            List<String> inputArguments, Map<String, String> systemProperties, HeartbeatSchema hbSchema) {
         this.ncAddress = ncAddress;
         this.nodeId = nodeId;
         this.ncConfig = ncConfig;
         this.dataPort = dataPort;
+        this.datasetPort = datasetPort;
         this.osName = osName;
         this.arch = arch;
         this.osVersion = osVersion;
@@ -98,6 +101,10 @@
         return dataPort;
     }
 
+    public NetworkAddress getDatasetPort() {
+        return datasetPort;
+    }
+
     public String getOSName() {
         return osName;
     }
diff --git a/hyracks/hyracks-control/hyracks-control-common/src/main/java/edu/uci/ics/hyracks/control/common/heartbeat/HeartbeatData.java b/hyracks/hyracks-control/hyracks-control-common/src/main/java/edu/uci/ics/hyracks/control/common/heartbeat/HeartbeatData.java
index 1dba3bc..663c68a 100644
--- a/hyracks/hyracks-control/hyracks-control-common/src/main/java/edu/uci/ics/hyracks/control/common/heartbeat/HeartbeatData.java
+++ b/hyracks/hyracks-control/hyracks-control-common/src/main/java/edu/uci/ics/hyracks/control/common/heartbeat/HeartbeatData.java
@@ -37,6 +37,10 @@
     public long netPayloadBytesWritten;
     public long netSignalingBytesRead;
     public long netSignalingBytesWritten;
+    public long datasetNetPayloadBytesRead;
+    public long datasetNetPayloadBytesWritten;
+    public long datasetNetSignalingBytesRead;
+    public long datasetNetSignalingBytesWritten;
     public long ipcMessagesSent;
     public long ipcMessageBytesSent;
     public long ipcMessagesReceived;
diff --git a/hyracks/hyracks-control/hyracks-control-common/src/main/java/edu/uci/ics/hyracks/control/common/ipc/CCNCFunctions.java b/hyracks/hyracks-control/hyracks-control-common/src/main/java/edu/uci/ics/hyracks/control/common/ipc/CCNCFunctions.java
index 557a8cb..b506b12 100644
--- a/hyracks/hyracks-control/hyracks-control-common/src/main/java/edu/uci/ics/hyracks/control/common/ipc/CCNCFunctions.java
+++ b/hyracks/hyracks-control/hyracks-control-common/src/main/java/edu/uci/ics/hyracks/control/common/ipc/CCNCFunctions.java
@@ -36,6 +36,7 @@
 import edu.uci.ics.hyracks.api.dataflow.TaskAttemptId;
 import edu.uci.ics.hyracks.api.dataflow.TaskId;
 import edu.uci.ics.hyracks.api.dataflow.connectors.IConnectorPolicy;
+import edu.uci.ics.hyracks.api.dataset.ResultSetId;
 import edu.uci.ics.hyracks.api.job.JobFlag;
 import edu.uci.ics.hyracks.api.job.JobId;
 import edu.uci.ics.hyracks.api.job.JobStatus;
@@ -68,6 +69,9 @@
         REPORT_PROFILE,
         REGISTER_PARTITION_PROVIDER,
         REGISTER_PARTITION_REQUEST,
+        REGISTER_RESULT_PARTITION_LOCATION,
+        REPORT_RESULT_PARTITION_WRITE_COMPLETION,
+        REPORT_RESULT_PARTITION_FAILURE,
         APPLICATION_STATE_CHANGE_RESPONSE,
 
         NODE_REGISTRATION_RESULT,
@@ -438,6 +442,127 @@
         }
     }
 
+    public static class RegisterResultPartitionLocationFunction extends Function {
+        private static final long serialVersionUID = 1L;
+
+        private final JobId jobId;
+
+        private final ResultSetId rsId;
+
+        private final boolean orderedResult;
+
+        private final int partition;
+
+        private final int nPartitions;
+
+        private NetworkAddress networkAddress;
+
+        public RegisterResultPartitionLocationFunction(JobId jobId, ResultSetId rsId, boolean orderedResult,
+                int partition, int nPartitions, NetworkAddress networkAddress) {
+            this.jobId = jobId;
+            this.rsId = rsId;
+            this.orderedResult = orderedResult;
+            this.partition = partition;
+            this.nPartitions = nPartitions;
+            this.networkAddress = networkAddress;
+        }
+
+        @Override
+        public FunctionId getFunctionId() {
+            return FunctionId.REGISTER_RESULT_PARTITION_LOCATION;
+        }
+
+        public JobId getJobId() {
+            return jobId;
+        }
+
+        public ResultSetId getResultSetId() {
+            return rsId;
+        }
+
+        public boolean getOrderedResult() {
+            return orderedResult;
+        }
+
+        public int getPartition() {
+            return partition;
+        }
+
+        public int getNPartitions() {
+            return nPartitions;
+        }
+
+        public NetworkAddress getNetworkAddress() {
+            return networkAddress;
+        }
+    }
+
+    public static class ReportResultPartitionWriteCompletionFunction extends Function {
+        private static final long serialVersionUID = 1L;
+
+        private final JobId jobId;
+
+        private final ResultSetId rsId;
+
+        private final int partition;
+
+        public ReportResultPartitionWriteCompletionFunction(JobId jobId, ResultSetId rsId, int partition) {
+            this.jobId = jobId;
+            this.rsId = rsId;
+            this.partition = partition;
+        }
+
+        @Override
+        public FunctionId getFunctionId() {
+            return FunctionId.REPORT_RESULT_PARTITION_WRITE_COMPLETION;
+        }
+
+        public JobId getJobId() {
+            return jobId;
+        }
+
+        public ResultSetId getResultSetId() {
+            return rsId;
+        }
+
+        public int getPartition() {
+            return partition;
+        }
+    }
+
+    public static class ReportResultPartitionFailureFunction extends Function {
+        private static final long serialVersionUID = 1L;
+
+        private final JobId jobId;
+
+        private final ResultSetId rsId;
+
+        private final int partition;
+
+        public ReportResultPartitionFailureFunction(JobId jobId, ResultSetId rsId, int partition) {
+            this.jobId = jobId;
+            this.rsId = rsId;
+            this.partition = partition;
+        }
+
+        @Override
+        public FunctionId getFunctionId() {
+            return FunctionId.REPORT_RESULT_PARTITION_FAILURE;
+        }
+
+        public JobId getJobId() {
+            return jobId;
+        }
+
+        public ResultSetId getResultSetId() {
+            return rsId;
+        }
+
+        public int getPartition() {
+            return partition;
+        }
+    }
+
     public static class ApplicationStateChangeResponseFunction extends Function {
         private static final long serialVersionUID = 1L;
 
diff --git a/hyracks/hyracks-control/hyracks-control-common/src/main/java/edu/uci/ics/hyracks/control/common/ipc/ClusterControllerRemoteProxy.java b/hyracks/hyracks-control/hyracks-control-common/src/main/java/edu/uci/ics/hyracks/control/common/ipc/ClusterControllerRemoteProxy.java
index bbaab4e..091a5d2 100644
--- a/hyracks/hyracks-control/hyracks-control-common/src/main/java/edu/uci/ics/hyracks/control/common/ipc/ClusterControllerRemoteProxy.java
+++ b/hyracks/hyracks-control/hyracks-control-common/src/main/java/edu/uci/ics/hyracks/control/common/ipc/ClusterControllerRemoteProxy.java
@@ -16,7 +16,9 @@
 
 import java.util.List;
 
+import edu.uci.ics.hyracks.api.comm.NetworkAddress;
 import edu.uci.ics.hyracks.api.dataflow.TaskAttemptId;
+import edu.uci.ics.hyracks.api.dataset.ResultSetId;
 import edu.uci.ics.hyracks.api.job.JobId;
 import edu.uci.ics.hyracks.control.common.application.ApplicationStatus;
 import edu.uci.ics.hyracks.control.common.base.IClusterController;
@@ -95,6 +97,28 @@
     }
 
     @Override
+    public void registerResultPartitionLocation(JobId jobId, ResultSetId rsId, boolean orderedResult, int partition,
+            int nPartitions, NetworkAddress networkAddress) throws Exception {
+        CCNCFunctions.RegisterResultPartitionLocationFunction fn = new CCNCFunctions.RegisterResultPartitionLocationFunction(
+                jobId, rsId, orderedResult, partition, nPartitions, networkAddress);
+        ipcHandle.send(-1, fn, null);
+    }
+
+    @Override
+    public void reportResultPartitionWriteCompletion(JobId jobId, ResultSetId rsId, int partition) throws Exception {
+        CCNCFunctions.ReportResultPartitionWriteCompletionFunction fn = new CCNCFunctions.ReportResultPartitionWriteCompletionFunction(
+                jobId, rsId, partition);
+        ipcHandle.send(-1, fn, null);
+    }
+
+    @Override
+    public void reportResultPartitionFailure(JobId jobId, ResultSetId rsId, int partition) throws Exception {
+        CCNCFunctions.ReportResultPartitionFailureFunction fn = new CCNCFunctions.ReportResultPartitionFailureFunction(
+                jobId, rsId, partition);
+        ipcHandle.send(-1, fn, null);
+    }
+
+    @Override
     public void notifyApplicationStateChange(String nodeId, String appName, ApplicationStatus status) throws Exception {
         CCNCFunctions.ApplicationStateChangeResponseFunction fn = new CCNCFunctions.ApplicationStateChangeResponseFunction(
                 nodeId, appName, status);
diff --git a/hyracks/hyracks-control/hyracks-control-nc/pom.xml b/hyracks/hyracks-control/hyracks-control-nc/pom.xml
index c662a75..f103f4a 100644
--- a/hyracks/hyracks-control/hyracks-control-nc/pom.xml
+++ b/hyracks/hyracks-control/hyracks-control-nc/pom.xml
@@ -40,6 +40,11 @@
   		<artifactId>hyracks-net</artifactId>
   		<version>0.2.3-SNAPSHOT</version>
   	</dependency>
+  	<dependency>
+  		<groupId>edu.uci.ics.hyracks</groupId>
+  		<artifactId>hyracks-comm</artifactId>
+  		<version>0.2.3-SNAPSHOT</version>
+  	</dependency>
   </dependencies>
   <reporting>
     <plugins>
diff --git a/hyracks/hyracks-control/hyracks-control-nc/src/main/java/edu/uci/ics/hyracks/control/nc/NodeControllerService.java b/hyracks/hyracks-control/hyracks-control-nc/src/main/java/edu/uci/ics/hyracks/control/nc/NodeControllerService.java
index 0195143..290c59c 100644
--- a/hyracks/hyracks-control/hyracks-control-nc/src/main/java/edu/uci/ics/hyracks/control/nc/NodeControllerService.java
+++ b/hyracks/hyracks-control/hyracks-control-nc/src/main/java/edu/uci/ics/hyracks/control/nc/NodeControllerService.java
@@ -45,6 +45,7 @@
 
 import edu.uci.ics.hyracks.api.client.NodeControllerInfo;
 import edu.uci.ics.hyracks.api.context.IHyracksRootContext;
+import edu.uci.ics.hyracks.api.dataset.IDatasetPartitionManager;
 import edu.uci.ics.hyracks.api.io.IODeviceHandle;
 import edu.uci.ics.hyracks.api.job.JobId;
 import edu.uci.ics.hyracks.control.common.AbstractRemoteService;
@@ -61,7 +62,9 @@
 import edu.uci.ics.hyracks.control.common.work.FutureValue;
 import edu.uci.ics.hyracks.control.common.work.WorkQueue;
 import edu.uci.ics.hyracks.control.nc.application.NCApplicationContext;
+import edu.uci.ics.hyracks.control.nc.dataset.DatasetPartitionManager;
 import edu.uci.ics.hyracks.control.nc.io.IOManager;
+import edu.uci.ics.hyracks.control.nc.net.DatasetNetworkManager;
 import edu.uci.ics.hyracks.control.nc.net.NetworkManager;
 import edu.uci.ics.hyracks.control.nc.partitions.PartitionManager;
 import edu.uci.ics.hyracks.control.nc.runtime.RootHyracksContext;
@@ -94,6 +97,10 @@
 
     private final NetworkManager netManager;
 
+    private final IDatasetPartitionManager datasetPartitionManager;
+
+    private final DatasetNetworkManager datasetNetworkManager;
+
     private final WorkQueue queue;
 
     private final Timer timer;
@@ -140,7 +147,11 @@
             throw new Exception("id not set");
         }
         partitionManager = new PartitionManager(this);
-        netManager = new NetworkManager(getIpAddress(ncConfig), partitionManager, ncConfig.nNetThreads);
+        netManager = new NetworkManager(getIpAddress(ncConfig.dataIPAddress), partitionManager, ncConfig.nNetThreads);
+
+        datasetPartitionManager = new DatasetPartitionManager(this, executor);
+        datasetNetworkManager = new DatasetNetworkManager(getIpAddress(ncConfig.datasetIPAddress),
+                datasetPartitionManager, ncConfig.nNetThreads);
 
         queue = new WorkQueue();
         jobletMap = new Hashtable<JobId, Joblet>();
@@ -205,6 +216,7 @@
         LOGGER.log(Level.INFO, "Starting NodeControllerService");
         ipc.start();
         netManager.start();
+        datasetNetworkManager.start();
         IIPCHandle ccIPCHandle = ipc.getHandle(new InetSocketAddress(ncConfig.ccHost, ncConfig.ccPort));
         this.ccs = new ClusterControllerRemoteProxy(ccIPCHandle);
         HeartbeatSchema.GarbageCollectorInfo[] gcInfos = new HeartbeatSchema.GarbageCollectorInfo[gcMXBeans.size()];
@@ -213,10 +225,11 @@
         }
         HeartbeatSchema hbSchema = new HeartbeatSchema(gcInfos);
         ccs.registerNode(new NodeRegistration(ipc.getSocketAddress(), id, ncConfig, netManager.getNetworkAddress(),
-                osMXBean.getName(), osMXBean.getArch(), osMXBean.getVersion(), osMXBean.getAvailableProcessors(),
-                runtimeMXBean.getVmName(), runtimeMXBean.getVmVersion(), runtimeMXBean.getVmVendor(), runtimeMXBean
-                        .getClassPath(), runtimeMXBean.getLibraryPath(), runtimeMXBean.getBootClassPath(),
-                runtimeMXBean.getInputArguments(), runtimeMXBean.getSystemProperties(), hbSchema));
+                datasetNetworkManager.getNetworkAddress(), osMXBean.getName(), osMXBean.getArch(), osMXBean
+                        .getVersion(), osMXBean.getAvailableProcessors(), runtimeMXBean.getVmName(), runtimeMXBean
+                        .getVmVersion(), runtimeMXBean.getVmVendor(), runtimeMXBean.getClassPath(), runtimeMXBean
+                        .getLibraryPath(), runtimeMXBean.getBootClassPath(), runtimeMXBean.getInputArguments(),
+                runtimeMXBean.getSystemProperties(), hbSchema));
 
         synchronized (this) {
             while (registrationPending) {
@@ -247,8 +260,10 @@
         LOGGER.log(Level.INFO, "Stopping NodeControllerService");
         executor.shutdownNow();
         partitionManager.close();
+        datasetPartitionManager.close();
         heartbeatTask.cancel();
         netManager.stop();
+        datasetNetworkManager.stop();
         queue.stop();
         LOGGER.log(Level.INFO, "Stopped NodeControllerService");
     }
@@ -273,6 +288,10 @@
         return netManager;
     }
 
+    public DatasetNetworkManager getDatasetNetworkManager() {
+        return datasetNetworkManager;
+    }
+
     public PartitionManager getPartitionManager() {
         return partitionManager;
     }
@@ -297,8 +316,7 @@
         return queue;
     }
 
-    private static InetAddress getIpAddress(NCConfig ncConfig) throws Exception {
-        String ipaddrStr = ncConfig.dataIPAddress;
+    private static InetAddress getIpAddress(String ipaddrStr) throws Exception {
         ipaddrStr = ipaddrStr.trim();
         Pattern pattern = Pattern.compile("(\\d{1,3})\\.(\\d{1,3})\\.(\\d{1,3})\\.(\\d{1,3})");
         Matcher m = pattern.matcher(ipaddrStr);
@@ -355,6 +373,12 @@
             hbData.netSignalingBytesRead = netPC.getSignalingBytesRead();
             hbData.netSignalingBytesWritten = netPC.getSignalingBytesWritten();
 
+            MuxDemuxPerformanceCounters datasetNetPC = datasetNetworkManager.getPerformanceCounters();
+            hbData.datasetNetPayloadBytesRead = datasetNetPC.getPayloadBytesRead();
+            hbData.datasetNetPayloadBytesWritten = datasetNetPC.getPayloadBytesWritten();
+            hbData.datasetNetSignalingBytesRead = datasetNetPC.getSignalingBytesRead();
+            hbData.datasetNetSignalingBytesWritten = datasetNetPC.getSignalingBytesWritten();
+
             IPCPerformanceCounters ipcPC = ipc.getPerformanceCounters();
             hbData.ipcMessagesSent = ipcPC.getMessageSentCount();
             hbData.ipcMessageBytesSent = ipcPC.getMessageBytesSent();
@@ -459,6 +483,10 @@
         }
     }
 
+    public IDatasetPartitionManager getDatasetPartitionManager() {
+        return datasetPartitionManager;
+    }
+
     public void sendApplicationMessageToCC(byte[] data, String appName, String nodeId) throws Exception {
         ccs.sendApplicationMessageToCC(data, appName, nodeId);
     }
diff --git a/hyracks/hyracks-control/hyracks-control-nc/src/main/java/edu/uci/ics/hyracks/control/nc/Task.java b/hyracks/hyracks-control/hyracks-control-nc/src/main/java/edu/uci/ics/hyracks/control/nc/Task.java
index eba3ec9..5a3e9dd 100644
--- a/hyracks/hyracks-control/hyracks-control-nc/src/main/java/edu/uci/ics/hyracks/control/nc/Task.java
+++ b/hyracks/hyracks-control/hyracks-control-nc/src/main/java/edu/uci/ics/hyracks/control/nc/Task.java
@@ -34,6 +34,7 @@
 import edu.uci.ics.hyracks.api.dataflow.IOperatorNodePushable;
 import edu.uci.ics.hyracks.api.dataflow.TaskAttemptId;
 import edu.uci.ics.hyracks.api.dataflow.state.IStateObject;
+import edu.uci.ics.hyracks.api.dataset.IDatasetPartitionManager;
 import edu.uci.ics.hyracks.api.exceptions.HyracksDataException;
 import edu.uci.ics.hyracks.api.exceptions.HyracksException;
 import edu.uci.ics.hyracks.api.io.FileReference;
@@ -348,6 +349,11 @@
     }
 
     @Override
+    public IDatasetPartitionManager getDatasetPartitionManager() {
+        return ncs.getDatasetPartitionManager();
+    }
+
+    @Override
     public void sendApplicationMessageToCC(byte[] message, String nodeId) throws Exception {
         this.ncs.sendApplicationMessageToCC(message, this.getJobletContext().getApplicationContext()
                 .getApplicationName(), nodeId);
diff --git a/hyracks/hyracks-control/hyracks-control-nc/src/main/java/edu/uci/ics/hyracks/control/nc/dataset/DatasetPartitionManager.java b/hyracks/hyracks-control/hyracks-control-nc/src/main/java/edu/uci/ics/hyracks/control/nc/dataset/DatasetPartitionManager.java
new file mode 100644
index 0000000..85f17b1
--- /dev/null
+++ b/hyracks/hyracks-control/hyracks-control-nc/src/main/java/edu/uci/ics/hyracks/control/nc/dataset/DatasetPartitionManager.java
@@ -0,0 +1,118 @@
+/*
+ * Copyright 2009-2010 by The Regents of the University of California
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * you may obtain a copy of the License from
+ * 
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ * 
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+package edu.uci.ics.hyracks.control.nc.dataset;
+
+import java.util.HashMap;
+import java.util.Map;
+import java.util.concurrent.Executor;
+
+import edu.uci.ics.hyracks.api.comm.IFrameWriter;
+import edu.uci.ics.hyracks.api.context.IHyracksTaskContext;
+import edu.uci.ics.hyracks.api.dataset.IDatasetPartitionManager;
+import edu.uci.ics.hyracks.api.dataset.ResultSetId;
+import edu.uci.ics.hyracks.api.exceptions.HyracksException;
+import edu.uci.ics.hyracks.api.io.IWorkspaceFileFactory;
+import edu.uci.ics.hyracks.api.job.JobId;
+import edu.uci.ics.hyracks.control.nc.NodeControllerService;
+import edu.uci.ics.hyracks.control.nc.io.IOManager;
+import edu.uci.ics.hyracks.control.nc.io.WorkspaceFileFactory;
+import edu.uci.ics.hyracks.control.nc.resources.DefaultDeallocatableRegistry;
+
+public class DatasetPartitionManager implements IDatasetPartitionManager {
+    private final NodeControllerService ncs;
+
+    private final Executor executor;
+
+    private final Map<JobId, DatasetPartitionWriter[]> partitionDatasetWriterMap;
+
+    private final DefaultDeallocatableRegistry deallocatableRegistry;
+
+    private final IWorkspaceFileFactory fileFactory;
+
+    public DatasetPartitionManager(NodeControllerService ncs, Executor executor) {
+        this.ncs = ncs;
+        this.executor = executor;
+        partitionDatasetWriterMap = new HashMap<JobId, DatasetPartitionWriter[]>();
+        deallocatableRegistry = new DefaultDeallocatableRegistry();
+        fileFactory = new WorkspaceFileFactory(deallocatableRegistry, (IOManager) ncs.getRootContext().getIOManager());
+    }
+
+    @Override
+    public IFrameWriter createDatasetPartitionWriter(IHyracksTaskContext ctx, ResultSetId rsId, boolean orderedResult,
+            int partition, int nPartitions) throws HyracksException {
+        DatasetPartitionWriter dpw = null;
+        JobId jobId = ctx.getJobletContext().getJobId();
+        try {
+            ncs.getClusterController().registerResultPartitionLocation(jobId, rsId, orderedResult, partition,
+                    nPartitions, ncs.getDatasetNetworkManager().getNetworkAddress());
+            dpw = new DatasetPartitionWriter(ctx, this, jobId, rsId, partition, executor);
+
+            DatasetPartitionWriter[] writers = partitionDatasetWriterMap.get(jobId);
+            if (writers == null) {
+                writers = new DatasetPartitionWriter[nPartitions];
+                partitionDatasetWriterMap.put(jobId, writers);
+            }
+            writers[partition] = dpw;
+        } catch (Exception e) {
+            throw new HyracksException(e);
+        }
+
+        return dpw;
+    }
+
+    @Override
+    public void reportPartitionWriteCompletion(JobId jobId, ResultSetId rsId, int partition) throws HyracksException {
+        try {
+            ncs.getClusterController().reportResultPartitionWriteCompletion(jobId, rsId, partition);
+        } catch (Exception e) {
+            throw new HyracksException(e);
+        }
+    }
+
+    @Override
+    public void reportPartitionFailure(JobId jobId, ResultSetId rsId, int partition) throws HyracksException {
+        try {
+            ncs.getClusterController().reportResultPartitionFailure(jobId, rsId, partition);
+        } catch (Exception e) {
+            throw new HyracksException(e);
+        }
+    }
+
+    @Override
+    public void initializeDatasetPartitionReader(JobId jobId, int partition, IFrameWriter writer)
+            throws HyracksException {
+        DatasetPartitionWriter[] writers = partitionDatasetWriterMap.get(jobId);
+        if (writers == null) {
+            throw new HyracksException("Unknown JobId " + jobId);
+        }
+
+        DatasetPartitionWriter dpw = writers[partition];
+        if (dpw == null) {
+            throw new HyracksException("No DatasetPartitionWriter for partition " + partition);
+        }
+
+        dpw.writeTo(writer);
+    }
+
+    @Override
+    public IWorkspaceFileFactory getFileFactory() {
+        return fileFactory;
+    }
+
+    @Override
+    public void close() {
+        deallocatableRegistry.close();
+    }
+}
diff --git a/hyracks/hyracks-control/hyracks-control-nc/src/main/java/edu/uci/ics/hyracks/control/nc/dataset/DatasetPartitionWriter.java b/hyracks/hyracks-control/hyracks-control-nc/src/main/java/edu/uci/ics/hyracks/control/nc/dataset/DatasetPartitionWriter.java
new file mode 100644
index 0000000..0f5895e
--- /dev/null
+++ b/hyracks/hyracks-control/hyracks-control-nc/src/main/java/edu/uci/ics/hyracks/control/nc/dataset/DatasetPartitionWriter.java
@@ -0,0 +1,173 @@
+/*
+ * Copyright 2009-2010 by The Regents of the University of California
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * you may obtain a copy of the License from
+ * 
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ * 
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+package edu.uci.ics.hyracks.control.nc.dataset;
+
+import java.nio.ByteBuffer;
+import java.util.concurrent.Executor;
+import java.util.concurrent.atomic.AtomicBoolean;
+import java.util.logging.Level;
+import java.util.logging.Logger;
+
+import edu.uci.ics.hyracks.api.comm.IFrameWriter;
+import edu.uci.ics.hyracks.api.context.IHyracksTaskContext;
+import edu.uci.ics.hyracks.api.dataset.IDatasetPartitionManager;
+import edu.uci.ics.hyracks.api.dataset.ResultSetId;
+import edu.uci.ics.hyracks.api.exceptions.HyracksDataException;
+import edu.uci.ics.hyracks.api.exceptions.HyracksException;
+import edu.uci.ics.hyracks.api.io.FileReference;
+import edu.uci.ics.hyracks.api.io.IFileHandle;
+import edu.uci.ics.hyracks.api.io.IIOManager;
+import edu.uci.ics.hyracks.api.job.JobId;
+import edu.uci.ics.hyracks.api.partitions.IPartition;
+import edu.uci.ics.hyracks.comm.channels.NetworkOutputChannel;
+
+public class DatasetPartitionWriter implements IFrameWriter, IPartition {
+    private static final Logger LOGGER = Logger.getLogger(DatasetPartitionWriter.class.getName());
+
+    private static final String FILE_PREFIX = "result_";
+
+    private final IHyracksTaskContext ctx;
+
+    private final IDatasetPartitionManager manager;
+
+    private final JobId jobId;
+
+    private final ResultSetId resultSetId;
+
+    private final int partition;
+
+    private final Executor executor;
+
+    private final AtomicBoolean eos;
+
+    private FileReference fRef;
+
+    private IFileHandle handle;
+
+    private long size;
+
+    public DatasetPartitionWriter(IHyracksTaskContext ctx, IDatasetPartitionManager manager, JobId jobId,
+            ResultSetId rsId, int partition, Executor executor) {
+        this.ctx = ctx;
+        this.manager = manager;
+        this.jobId = jobId;
+        this.resultSetId = rsId;
+        this.partition = partition;
+        this.executor = executor;
+        eos = new AtomicBoolean(false);
+    }
+
+    @Override
+    public void open() throws HyracksDataException {
+        if (LOGGER.isLoggable(Level.INFO)) {
+            LOGGER.info("open(" + partition + ")");
+        }
+        fRef = manager.getFileFactory().createUnmanagedWorkspaceFile(FILE_PREFIX + String.valueOf(partition));
+        handle = ctx.getIOManager().open(fRef, IIOManager.FileReadWriteMode.READ_WRITE,
+                IIOManager.FileSyncMode.METADATA_ASYNC_DATA_ASYNC);
+        size = 0;
+    }
+
+    @Override
+    public synchronized void nextFrame(ByteBuffer buffer) throws HyracksDataException {
+        size += ctx.getIOManager().syncWrite(handle, size, buffer);
+        notifyAll();
+    }
+
+    @Override
+    public void fail() throws HyracksDataException {
+        try {
+            manager.reportPartitionFailure(jobId, resultSetId, partition);
+        } catch (HyracksException e) {
+            throw new HyracksDataException(e);
+        }
+    }
+
+    @Override
+    public synchronized void close() throws HyracksDataException {
+        if (LOGGER.isLoggable(Level.INFO)) {
+            LOGGER.info("close(" + partition + ")");
+        }
+
+        try {
+            eos.set(true);
+            notifyAll();
+            manager.reportPartitionWriteCompletion(jobId, resultSetId, partition);
+        } catch (HyracksException e) {
+            throw new HyracksDataException(e);
+        }
+    }
+
+    @Override
+    public IHyracksTaskContext getTaskContext() {
+        return ctx;
+    }
+
+    private synchronized long read(long offset, ByteBuffer buffer) throws HyracksDataException {
+        while (offset >= size && !eos.get()) {
+            try {
+                wait();
+            } catch (InterruptedException e) {
+                throw new HyracksDataException(e);
+            }
+        }
+        return ctx.getIOManager().syncRead(handle, offset, buffer);
+    }
+
+    @Override
+    public void writeTo(final IFrameWriter writer) {
+        executor.execute(new Runnable() {
+            @Override
+            public void run() {
+                NetworkOutputChannel channel = (NetworkOutputChannel) writer;
+                channel.setTaskContext(ctx);
+                try {
+                    channel.open();
+                    try {
+                        long offset = 0;
+                        ByteBuffer buffer = ctx.allocateFrame();
+                        while (true) {
+                            buffer.clear();
+                            long size = read(offset, buffer);
+                            if (size < 0) {
+                                break;
+                            } else if (size < buffer.capacity()) {
+                                throw new HyracksDataException("Premature end of file");
+                            }
+                            offset += size;
+                            buffer.flip();
+                            channel.nextFrame(buffer);
+                        }
+                    } finally {
+                        channel.close();
+                        ctx.getIOManager().close(handle);
+                    }
+                } catch (HyracksDataException e) {
+                    throw new RuntimeException(e);
+                }
+            }
+        });
+    }
+
+    @Override
+    public boolean isReusable() {
+        return true;
+    }
+
+    @Override
+    public void deallocate() {
+
+    }
+}
diff --git a/hyracks/hyracks-control/hyracks-control-nc/src/main/java/edu/uci/ics/hyracks/control/nc/net/DatasetNetworkManager.java b/hyracks/hyracks-control/hyracks-control-nc/src/main/java/edu/uci/ics/hyracks/control/nc/net/DatasetNetworkManager.java
new file mode 100644
index 0000000..5b8b333
--- /dev/null
+++ b/hyracks/hyracks-control/hyracks-control-nc/src/main/java/edu/uci/ics/hyracks/control/nc/net/DatasetNetworkManager.java
@@ -0,0 +1,127 @@
+/*
+ * Copyright 2009-2010 by The Regents of the University of California
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * you may obtain a copy of the License from
+ * 
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ * 
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+package edu.uci.ics.hyracks.control.nc.net;
+
+import java.io.IOException;
+import java.net.InetAddress;
+import java.net.InetSocketAddress;
+import java.net.SocketAddress;
+import java.nio.ByteBuffer;
+import java.util.logging.Level;
+import java.util.logging.Logger;
+
+import edu.uci.ics.hyracks.api.comm.NetworkAddress;
+import edu.uci.ics.hyracks.api.dataset.IDatasetPartitionManager;
+import edu.uci.ics.hyracks.api.exceptions.HyracksException;
+import edu.uci.ics.hyracks.api.job.JobId;
+import edu.uci.ics.hyracks.comm.channels.IChannelConnectionFactory;
+import edu.uci.ics.hyracks.comm.channels.NetworkOutputChannel;
+import edu.uci.ics.hyracks.net.buffers.ICloseableBufferAcceptor;
+import edu.uci.ics.hyracks.net.exceptions.NetException;
+import edu.uci.ics.hyracks.net.protocols.muxdemux.ChannelControlBlock;
+import edu.uci.ics.hyracks.net.protocols.muxdemux.IChannelOpenListener;
+import edu.uci.ics.hyracks.net.protocols.muxdemux.MultiplexedConnection;
+import edu.uci.ics.hyracks.net.protocols.muxdemux.MuxDemux;
+import edu.uci.ics.hyracks.net.protocols.muxdemux.MuxDemuxPerformanceCounters;
+
+public class DatasetNetworkManager implements IChannelConnectionFactory {
+    private static final Logger LOGGER = Logger.getLogger(DatasetNetworkManager.class.getName());
+
+    private static final int MAX_CONNECTION_ATTEMPTS = 5;
+
+    static final int INITIAL_MESSAGE_SIZE = 20;
+
+    private final IDatasetPartitionManager partitionManager;
+
+    private final MuxDemux md;
+
+    private NetworkAddress networkAddress;
+
+    public DatasetNetworkManager(InetAddress inetAddress, IDatasetPartitionManager partitionManager, int nThreads)
+            throws IOException {
+        this.partitionManager = partitionManager;
+        md = new MuxDemux(new InetSocketAddress(inetAddress, 0), new ChannelOpenListener(), nThreads,
+                MAX_CONNECTION_ATTEMPTS);
+    }
+
+    public void start() throws IOException {
+        md.start();
+        InetSocketAddress sockAddr = md.getLocalAddress();
+        networkAddress = new NetworkAddress(sockAddr.getAddress().getAddress(), sockAddr.getPort());
+    }
+
+    public NetworkAddress getNetworkAddress() {
+        return networkAddress;
+    }
+
+    public void stop() {
+
+    }
+
+    public ChannelControlBlock connect(SocketAddress remoteAddress) throws InterruptedException, NetException {
+        MultiplexedConnection mConn = md.connect((InetSocketAddress) remoteAddress);
+        return mConn.openChannel();
+    }
+
+    private class ChannelOpenListener implements IChannelOpenListener {
+        @Override
+        public void channelOpened(ChannelControlBlock channel) {
+            channel.getReadInterface().setFullBufferAcceptor(new InitialBufferAcceptor(channel));
+            channel.getReadInterface().getEmptyBufferAcceptor().accept(ByteBuffer.allocate(INITIAL_MESSAGE_SIZE));
+        }
+    }
+
+    private class InitialBufferAcceptor implements ICloseableBufferAcceptor {
+        private final ChannelControlBlock ccb;
+
+        private NetworkOutputChannel noc;
+
+        public InitialBufferAcceptor(ChannelControlBlock ccb) {
+            this.ccb = ccb;
+        }
+
+        @Override
+        public void accept(ByteBuffer buffer) {
+            JobId jobId = new JobId(buffer.getLong());
+            int partition = buffer.getInt();
+            if (LOGGER.isLoggable(Level.FINE)) {
+                LOGGER.fine("Received initial dataset partition read request for JobId: " + jobId + " partition: "
+                        + partition + " on channel: " + ccb);
+            }
+            noc = new NetworkOutputChannel(ccb, 1);
+            try {
+                partitionManager.initializeDatasetPartitionReader(jobId, partition, noc);
+            } catch (HyracksException e) {
+                noc.abort();
+            }
+        }
+
+        @Override
+        public void close() {
+
+        }
+
+        @Override
+        public void error(int ecode) {
+            if (noc != null) {
+                noc.abort();
+            }
+        }
+    }
+
+    public MuxDemuxPerformanceCounters getPerformanceCounters() {
+        return md.getPerformanceCounters();
+    }
+}
\ No newline at end of file
diff --git a/hyracks/hyracks-control/hyracks-control-nc/src/main/java/edu/uci/ics/hyracks/control/nc/net/NetworkManager.java b/hyracks/hyracks-control/hyracks-control-nc/src/main/java/edu/uci/ics/hyracks/control/nc/net/NetworkManager.java
index b805595..c8e4e94 100644
--- a/hyracks/hyracks-control/hyracks-control-nc/src/main/java/edu/uci/ics/hyracks/control/nc/net/NetworkManager.java
+++ b/hyracks/hyracks-control/hyracks-control-nc/src/main/java/edu/uci/ics/hyracks/control/nc/net/NetworkManager.java
@@ -27,6 +27,8 @@
 import edu.uci.ics.hyracks.api.exceptions.HyracksException;
 import edu.uci.ics.hyracks.api.job.JobId;
 import edu.uci.ics.hyracks.api.partitions.PartitionId;
+import edu.uci.ics.hyracks.comm.channels.IChannelConnectionFactory;
+import edu.uci.ics.hyracks.comm.channels.NetworkOutputChannel;
 import edu.uci.ics.hyracks.control.nc.partitions.PartitionManager;
 import edu.uci.ics.hyracks.net.buffers.ICloseableBufferAcceptor;
 import edu.uci.ics.hyracks.net.exceptions.NetException;
@@ -36,7 +38,7 @@
 import edu.uci.ics.hyracks.net.protocols.muxdemux.MuxDemux;
 import edu.uci.ics.hyracks.net.protocols.muxdemux.MuxDemuxPerformanceCounters;
 
-public class NetworkManager {
+public class NetworkManager implements IChannelConnectionFactory {
     private static final Logger LOGGER = Logger.getLogger(NetworkManager.class.getName());
 
     private static final int MAX_CONNECTION_ATTEMPTS = 5;
diff --git a/hyracks/hyracks-control/hyracks-control-nc/src/main/java/edu/uci/ics/hyracks/control/nc/partitions/MaterializedPartitionInputChannel.java b/hyracks/hyracks-control/hyracks-control-nc/src/main/java/edu/uci/ics/hyracks/control/nc/partitions/MaterializedPartitionInputChannel.java
index 16e31f7..ba6e6c3 100644
--- a/hyracks/hyracks-control/hyracks-control-nc/src/main/java/edu/uci/ics/hyracks/control/nc/partitions/MaterializedPartitionInputChannel.java
+++ b/hyracks/hyracks-control/hyracks-control-nc/src/main/java/edu/uci/ics/hyracks/control/nc/partitions/MaterializedPartitionInputChannel.java
@@ -21,7 +21,7 @@
 import edu.uci.ics.hyracks.api.channels.IInputChannel;
 import edu.uci.ics.hyracks.api.channels.IInputChannelMonitor;
 import edu.uci.ics.hyracks.api.comm.IFrameWriter;
-import edu.uci.ics.hyracks.api.context.IHyracksTaskContext;
+import edu.uci.ics.hyracks.api.context.IHyracksCommonContext;
 import edu.uci.ics.hyracks.api.exceptions.HyracksDataException;
 import edu.uci.ics.hyracks.api.partitions.IPartition;
 import edu.uci.ics.hyracks.api.partitions.PartitionId;
@@ -82,7 +82,7 @@
     }
 
     @Override
-    public void open(IHyracksTaskContext ctx) throws HyracksDataException {
+    public void open(IHyracksCommonContext ctx) throws HyracksDataException {
         for (int i = 0; i < nBuffers; ++i) {
             emptyQueue.add(ctx.allocateFrame());
         }
diff --git a/hyracks/hyracks-control/hyracks-control-nc/src/main/java/edu/uci/ics/hyracks/control/nc/partitions/PartitionManager.java b/hyracks/hyracks-control/hyracks-control-nc/src/main/java/edu/uci/ics/hyracks/control/nc/partitions/PartitionManager.java
index 45c091a..e532a0b 100644
--- a/hyracks/hyracks-control/hyracks-control-nc/src/main/java/edu/uci/ics/hyracks/control/nc/partitions/PartitionManager.java
+++ b/hyracks/hyracks-control/hyracks-control-nc/src/main/java/edu/uci/ics/hyracks/control/nc/partitions/PartitionManager.java
@@ -28,12 +28,12 @@
 import edu.uci.ics.hyracks.api.job.JobId;
 import edu.uci.ics.hyracks.api.partitions.IPartition;
 import edu.uci.ics.hyracks.api.partitions.PartitionId;
+import edu.uci.ics.hyracks.comm.channels.NetworkOutputChannel;
 import edu.uci.ics.hyracks.control.common.job.PartitionDescriptor;
 import edu.uci.ics.hyracks.control.common.job.PartitionState;
 import edu.uci.ics.hyracks.control.nc.NodeControllerService;
 import edu.uci.ics.hyracks.control.nc.io.IOManager;
 import edu.uci.ics.hyracks.control.nc.io.WorkspaceFileFactory;
-import edu.uci.ics.hyracks.control.nc.net.NetworkOutputChannel;
 import edu.uci.ics.hyracks.control.nc.resources.DefaultDeallocatableRegistry;
 
 public class PartitionManager {
diff --git a/hyracks/hyracks-control/hyracks-control-nc/src/main/java/edu/uci/ics/hyracks/control/nc/work/ReportPartitionAvailabilityWork.java b/hyracks/hyracks-control/hyracks-control-nc/src/main/java/edu/uci/ics/hyracks/control/nc/work/ReportPartitionAvailabilityWork.java
index bb9669d..7ed9d11 100644
--- a/hyracks/hyracks-control/hyracks-control-nc/src/main/java/edu/uci/ics/hyracks/control/nc/work/ReportPartitionAvailabilityWork.java
+++ b/hyracks/hyracks-control/hyracks-control-nc/src/main/java/edu/uci/ics/hyracks/control/nc/work/ReportPartitionAvailabilityWork.java
@@ -22,10 +22,10 @@
 import edu.uci.ics.hyracks.api.comm.PartitionChannel;
 import edu.uci.ics.hyracks.api.job.JobId;
 import edu.uci.ics.hyracks.api.partitions.PartitionId;
+import edu.uci.ics.hyracks.comm.channels.NetworkInputChannel;
 import edu.uci.ics.hyracks.control.common.work.AbstractWork;
 import edu.uci.ics.hyracks.control.nc.Joblet;
 import edu.uci.ics.hyracks.control.nc.NodeControllerService;
-import edu.uci.ics.hyracks.control.nc.net.NetworkInputChannel;
 
 public class ReportPartitionAvailabilityWork extends AbstractWork {
     private final NodeControllerService ncs;
diff --git a/hyracks/hyracks-dataflow-common/src/main/java/edu/uci/ics/hyracks/dataflow/common/comm/io/FrameOutputStream.java b/hyracks/hyracks-dataflow-common/src/main/java/edu/uci/ics/hyracks/dataflow/common/comm/io/FrameOutputStream.java
new file mode 100644
index 0000000..95833b1
--- /dev/null
+++ b/hyracks/hyracks-dataflow-common/src/main/java/edu/uci/ics/hyracks/dataflow/common/comm/io/FrameOutputStream.java
@@ -0,0 +1,53 @@
+/*
+ * Copyright 2009-2010 by The Regents of the University of California
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * you may obtain a copy of the License from
+ * 
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ * 
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+package edu.uci.ics.hyracks.dataflow.common.comm.io;
+
+import java.nio.ByteBuffer;
+import java.util.logging.Level;
+import java.util.logging.Logger;
+
+import edu.uci.ics.hyracks.data.std.util.ByteArrayAccessibleOutputStream;
+import edu.uci.ics.hyracks.dataflow.common.comm.io.FrameTupleAppender;
+
+public class FrameOutputStream extends ByteArrayAccessibleOutputStream {
+    private static final Logger LOGGER = Logger.getLogger(FrameOutputStream.class.getName());
+
+    private final FrameTupleAppender frameTupleAppender;
+
+    public FrameOutputStream(int frameSize) {
+        this.frameTupleAppender = new FrameTupleAppender(frameSize);
+    }
+
+    public void reset(ByteBuffer buffer, boolean clear) {
+        frameTupleAppender.reset(buffer, clear);
+    }
+
+    public int getTupleCount() {
+        int tupleCount = frameTupleAppender.getTupleCount();
+        if (LOGGER.isLoggable(Level.FINEST)) {
+            LOGGER.finest("appendTuple(): tuple count: " + tupleCount);
+        }
+        return tupleCount;
+    }
+
+    public boolean appendTuple() {
+        if (LOGGER.isLoggable(Level.FINEST)) {
+            LOGGER.finest("appendTuple(): tuple size: " + count);
+        }
+        boolean appended = frameTupleAppender.append(buf, 0, count);
+        count = 0;
+        return appended;
+    }
+}
diff --git a/hyracks/hyracks-dataflow-std/src/main/java/edu/uci/ics/hyracks/dataflow/std/result/ResultWriterOperatorDescriptor.java b/hyracks/hyracks-dataflow-std/src/main/java/edu/uci/ics/hyracks/dataflow/std/result/ResultWriterOperatorDescriptor.java
new file mode 100644
index 0000000..e500307
--- /dev/null
+++ b/hyracks/hyracks-dataflow-std/src/main/java/edu/uci/ics/hyracks/dataflow/std/result/ResultWriterOperatorDescriptor.java
@@ -0,0 +1,120 @@
+/*
+ * Copyright 2009-2010 by The Regents of the University of California
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * you may obtain a copy of the License from
+ * 
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ * 
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+package edu.uci.ics.hyracks.dataflow.std.result;
+
+import java.io.IOException;
+import java.io.PrintStream;
+import java.nio.ByteBuffer;
+
+import edu.uci.ics.hyracks.api.comm.IFrameWriter;
+import edu.uci.ics.hyracks.api.context.IHyracksTaskContext;
+import edu.uci.ics.hyracks.api.dataflow.IOperatorNodePushable;
+import edu.uci.ics.hyracks.api.dataflow.value.IRecordDescriptorProvider;
+import edu.uci.ics.hyracks.api.dataflow.value.IResultSerializer;
+import edu.uci.ics.hyracks.api.dataflow.value.IResultSerializerFactory;
+import edu.uci.ics.hyracks.api.dataflow.value.RecordDescriptor;
+import edu.uci.ics.hyracks.api.dataset.IDatasetPartitionManager;
+import edu.uci.ics.hyracks.api.dataset.ResultSetId;
+import edu.uci.ics.hyracks.api.exceptions.HyracksDataException;
+import edu.uci.ics.hyracks.api.exceptions.HyracksException;
+import edu.uci.ics.hyracks.api.job.IOperatorDescriptorRegistry;
+import edu.uci.ics.hyracks.dataflow.common.comm.io.FrameOutputStream;
+import edu.uci.ics.hyracks.dataflow.common.comm.io.FrameTupleAccessor;
+import edu.uci.ics.hyracks.dataflow.std.base.AbstractSingleActivityOperatorDescriptor;
+import edu.uci.ics.hyracks.dataflow.std.base.AbstractUnaryInputSinkOperatorNodePushable;
+
+public class ResultWriterOperatorDescriptor extends AbstractSingleActivityOperatorDescriptor {
+    private static final long serialVersionUID = 1L;
+
+    private final ResultSetId rsId;
+
+    private final boolean ordered;
+
+    private final RecordDescriptor recordDescriptor;
+
+    private final IResultSerializerFactory resultSerializerFactory;
+
+    public ResultWriterOperatorDescriptor(IOperatorDescriptorRegistry spec, ResultSetId rsId, boolean ordered,
+            RecordDescriptor recordDescriptor, IResultSerializerFactory resultSerializerFactory) throws IOException {
+        super(spec, 1, 0);
+        this.rsId = rsId;
+        this.ordered = ordered;
+        this.recordDescriptor = recordDescriptor;
+        this.resultSerializerFactory = resultSerializerFactory;
+    }
+
+    @Override
+    public IOperatorNodePushable createPushRuntime(final IHyracksTaskContext ctx,
+            IRecordDescriptorProvider recordDescProvider, final int partition, final int nPartitions) {
+        final IDatasetPartitionManager dpm = ctx.getDatasetPartitionManager();
+
+        final ByteBuffer outputBuffer = ctx.allocateFrame();
+
+        final FrameOutputStream frameOutputStream = new FrameOutputStream(ctx.getFrameSize());
+        frameOutputStream.reset(outputBuffer, true);
+        PrintStream printStream = new PrintStream(frameOutputStream);
+
+        final IResultSerializer resultSerializer = resultSerializerFactory.createResultSerializer(printStream);
+
+        final FrameTupleAccessor frameTupleAccessor = new FrameTupleAccessor(ctx.getFrameSize(), recordDescriptor);
+
+        return new AbstractUnaryInputSinkOperatorNodePushable() {
+            IFrameWriter datasetPartitionWriter;
+
+            @Override
+            public void open() throws HyracksDataException {
+                try {
+                    datasetPartitionWriter = dpm.createDatasetPartitionWriter(ctx, rsId, ordered, partition, nPartitions);
+                    datasetPartitionWriter.open();
+                    resultSerializer.init();
+                } catch (HyracksException e) {
+                    throw new HyracksDataException(e);
+                }
+            }
+
+            @Override
+            public void nextFrame(ByteBuffer buffer) throws HyracksDataException {
+                frameTupleAccessor.reset(buffer);
+                for (int tIndex = 0; tIndex < frameTupleAccessor.getTupleCount(); tIndex++) {
+                    resultSerializer.appendTuple(frameTupleAccessor, tIndex);
+                    if (!frameOutputStream.appendTuple()) {
+                        datasetPartitionWriter.nextFrame(outputBuffer);
+                        frameOutputStream.reset(outputBuffer, true);
+
+                        /* TODO(madhusudancs): This works under the assumption that no single serialized record is
+                         * longer than the buffer size.
+                         */
+                        resultSerializer.appendTuple(frameTupleAccessor, tIndex);
+                        frameOutputStream.appendTuple();
+                    }
+                }
+            }
+
+            @Override
+            public void fail() throws HyracksDataException {
+                datasetPartitionWriter.fail();
+            }
+
+            @Override
+            public void close() throws HyracksDataException {
+                if (frameOutputStream.getTupleCount() > 0) {
+                    datasetPartitionWriter.nextFrame(outputBuffer);
+                    frameOutputStream.reset(outputBuffer, true);
+                }
+                datasetPartitionWriter.close();
+            }
+        };
+    }
+}
\ No newline at end of file
diff --git a/hyracks/hyracks-examples/hyracks-integration-tests/pom.xml b/hyracks/hyracks-examples/hyracks-integration-tests/pom.xml
index f4cf908..0df38e7 100644
--- a/hyracks/hyracks-examples/hyracks-integration-tests/pom.xml
+++ b/hyracks/hyracks-examples/hyracks-integration-tests/pom.xml
@@ -31,6 +31,13 @@
   		<scope>test</scope>
   	</dependency>
   	<dependency>
+        <groupId>edu.uci.ics.hyracks</groupId>
+        <artifactId>hyracks-client</artifactId>
+        <version>0.2.3-SNAPSHOT</version>
+        <type>jar</type>
+        <scope>compile</scope>
+    </dependency>
+  	<dependency>
   		<groupId>edu.uci.ics.hyracks</groupId>
   		<artifactId>hyracks-dataflow-std</artifactId>
   		<version>0.2.3-SNAPSHOT</version>
diff --git a/hyracks/hyracks-examples/hyracks-integration-tests/src/test/java/edu/uci/ics/hyracks/tests/integration/AbstractIntegrationTest.java b/hyracks/hyracks-examples/hyracks-integration-tests/src/test/java/edu/uci/ics/hyracks/tests/integration/AbstractIntegrationTest.java
index 023bdd9..d7c20d7 100644
--- a/hyracks/hyracks-examples/hyracks-integration-tests/src/test/java/edu/uci/ics/hyracks/tests/integration/AbstractIntegrationTest.java
+++ b/hyracks/hyracks-examples/hyracks-integration-tests/src/test/java/edu/uci/ics/hyracks/tests/integration/AbstractIntegrationTest.java
@@ -16,6 +16,7 @@
 
 import java.io.File;
 import java.io.IOException;
+import java.io.PrintStream;
 import java.util.ArrayList;
 import java.util.EnumSet;
 import java.util.List;
@@ -30,9 +31,15 @@
 
 import edu.uci.ics.hyracks.api.client.HyracksConnection;
 import edu.uci.ics.hyracks.api.client.IHyracksClientConnection;
+import edu.uci.ics.hyracks.api.comm.IFrameTupleAccessor;
+import edu.uci.ics.hyracks.api.dataflow.value.IResultSerializer;
+import edu.uci.ics.hyracks.api.dataflow.value.IResultSerializerFactory;
+import edu.uci.ics.hyracks.api.dataset.IHyracksDataset;
+import edu.uci.ics.hyracks.api.exceptions.HyracksDataException;
 import edu.uci.ics.hyracks.api.job.JobFlag;
 import edu.uci.ics.hyracks.api.job.JobId;
 import edu.uci.ics.hyracks.api.job.JobSpecification;
+import edu.uci.ics.hyracks.client.dataset.HyracksDataset;
 import edu.uci.ics.hyracks.control.cc.ClusterControllerService;
 import edu.uci.ics.hyracks.control.common.controllers.CCConfig;
 import edu.uci.ics.hyracks.control.common.controllers.NCConfig;
@@ -80,6 +87,7 @@
         ncConfig1.ccPort = 39001;
         ncConfig1.clusterNetIPAddress = "127.0.0.1";
         ncConfig1.dataIPAddress = "127.0.0.1";
+        ncConfig1.datasetIPAddress = "127.0.0.1";
         ncConfig1.nodeId = NC1_ID;
         nc1 = new NodeControllerService(ncConfig1);
         nc1.start();
@@ -89,6 +97,7 @@
         ncConfig2.ccPort = 39001;
         ncConfig2.clusterNetIPAddress = "127.0.0.1";
         ncConfig2.dataIPAddress = "127.0.0.1";
+        ncConfig2.datasetIPAddress = "127.0.0.1";
         ncConfig2.nodeId = NC2_ID;
         nc2 = new NodeControllerService(ncConfig2);
         nc2.start();
@@ -115,6 +124,50 @@
         if (LOGGER.isLoggable(Level.INFO)) {
             LOGGER.info(jobId.toString());
         }
+
+        // My code
+        int nReaders = 5;
+        DatasetClientContext datasetClientCtx = new DatasetClientContext(spec.getFrameSize());
+        IHyracksDataset hyracksDataset = new HyracksDataset(hcc, datasetClientCtx, nReaders);
+
+        hyracksDataset.open(jobId, spec.getResultSetIds().get(0));
+        /*        FrameTupleAccessor frameTupleAccessor = new FrameTupleAccessor(datasetClientCtx.getFrameSize(),
+                        recordDescriptor);
+
+                ByteBuffer readBuffer = datasetClientCtx.allocateFrame();
+                ByteBufferInputStream bbis = new ByteBufferInputStream();
+                DataInputStream di = new DataInputStream(bbis);
+
+                while (true) {
+                    readBuffer.clear();
+                    int size = hyracksDataset.read(readBuffer);
+                    if (size <= 0) {
+                        break;
+                    }
+                    try {
+                        frameTupleAccessor.reset(readBuffer);
+                        System.out.println("Tuple count: " + recordDescriptor);
+                        for (int tIndex = 0; tIndex < frameTupleAccessor.getTupleCount(); tIndex++) {
+                            int start = frameTupleAccessor.getTupleStartOffset(tIndex)
+                                    + frameTupleAccessor.getFieldSlotsLength();
+                            bbis.setByteBuffer(readBuffer, start);
+                            Object[] record = new Object[recordDescriptor.getFieldCount()];
+                            for (int i = 0; i < record.length; ++i) {
+                                Object instance = recordDescriptor.getFields()[i].deserialize(di);
+                                if (i == 0) {
+                                    System.out.print(String.valueOf(instance));
+                                } else {
+                                    System.out.print(", " + String.valueOf(instance));
+                                }
+                            }
+                            System.out.println();
+                        }
+                    } catch (IOException e) {
+                        throw new HyracksDataException(e);
+                    }
+                }
+                // End of my code
+        */
         hcc.waitForCompletion(jobId);
         dumpOutputFiles();
     }
@@ -144,4 +197,27 @@
         outputFiles.add(tempFile);
         return tempFile;
     }
+
+    protected IResultSerializerFactory getResultSerializedAppenderFactory() {
+        return new IResultSerializerFactory() {
+            private static final long serialVersionUID = 1L;
+
+            @Override
+            public IResultSerializer createResultSerializer(final PrintStream printStream) {
+                return new IResultSerializer() {
+                    private static final long serialVersionUID = 1L;
+
+                    @Override
+                    public void init() throws HyracksDataException {
+
+                    }
+
+                    @Override
+                    public boolean appendTuple(IFrameTupleAccessor tAccess, int tIdx) throws HyracksDataException {
+                        return true;
+                    }
+                };
+            }
+        };
+    }
 }
\ No newline at end of file
diff --git a/hyracks/hyracks-examples/hyracks-integration-tests/src/test/java/edu/uci/ics/hyracks/tests/integration/SortMergeTest.java b/hyracks/hyracks-examples/hyracks-integration-tests/src/test/java/edu/uci/ics/hyracks/tests/integration/SortMergeTest.java
index 2c3fddf..ab9605b 100644
--- a/hyracks/hyracks-examples/hyracks-integration-tests/src/test/java/edu/uci/ics/hyracks/tests/integration/SortMergeTest.java
+++ b/hyracks/hyracks-examples/hyracks-integration-tests/src/test/java/edu/uci/ics/hyracks/tests/integration/SortMergeTest.java
@@ -24,6 +24,7 @@
 import edu.uci.ics.hyracks.api.dataflow.value.IBinaryHashFunctionFactory;
 import edu.uci.ics.hyracks.api.dataflow.value.ISerializerDeserializer;
 import edu.uci.ics.hyracks.api.dataflow.value.RecordDescriptor;
+import edu.uci.ics.hyracks.api.dataset.ResultSetId;
 import edu.uci.ics.hyracks.api.io.FileReference;
 import edu.uci.ics.hyracks.api.job.JobSpecification;
 import edu.uci.ics.hyracks.data.std.accessors.PointableBinaryComparatorFactory;
@@ -40,7 +41,7 @@
 import edu.uci.ics.hyracks.dataflow.std.file.FileScanOperatorDescriptor;
 import edu.uci.ics.hyracks.dataflow.std.file.FileSplit;
 import edu.uci.ics.hyracks.dataflow.std.file.IFileSplitProvider;
-import edu.uci.ics.hyracks.dataflow.std.file.PlainFileWriterOperatorDescriptor;
+import edu.uci.ics.hyracks.dataflow.std.result.ResultWriterOperatorDescriptor;
 import edu.uci.ics.hyracks.dataflow.std.sort.ExternalSortOperatorDescriptor;
 import edu.uci.ics.hyracks.dataflow.std.sort.InMemorySortOperatorDescriptor;
 
@@ -73,9 +74,9 @@
                 ordersDesc);
         PartitionConstraintHelper.addAbsoluteLocationConstraint(spec, sorter, NC1_ID, NC2_ID);
 
-        IFileSplitProvider outSplits = new ConstantFileSplitProvider(new FileSplit[] { new FileSplit(NC1_ID,
-                createTempFile().getAbsolutePath()) });
-        IOperatorDescriptor printer = new PlainFileWriterOperatorDescriptor(spec, outSplits, ",");
+        ResultSetId rsId = new ResultSetId(1);
+        IOperatorDescriptor printer = new ResultWriterOperatorDescriptor(spec, rsId, true, ordersDesc,
+                getResultSerializedAppenderFactory());
         PartitionConstraintHelper.addAbsoluteLocationConstraint(spec, printer, NC1_ID);
 
         spec.connect(new OneToOneConnectorDescriptor(spec), ordScanner, 0, sorter, 0);
@@ -87,6 +88,8 @@
                         new IBinaryComparatorFactory[] { PointableBinaryComparatorFactory
                                 .of(UTF8StringPointable.FACTORY) }), sorter, 0, printer, 0);
 
+        spec.addResultSetId(rsId);
+
         runTest(spec);
     }
 
@@ -118,9 +121,9 @@
                         PointableBinaryComparatorFactory.of(UTF8StringPointable.FACTORY) }, ordersDesc);
         PartitionConstraintHelper.addAbsoluteLocationConstraint(spec, sorter, NC1_ID, NC2_ID);
 
-        IFileSplitProvider outSplits = new ConstantFileSplitProvider(new FileSplit[] { new FileSplit(NC1_ID,
-                createTempFile().getAbsolutePath()) });
-        IOperatorDescriptor printer = new PlainFileWriterOperatorDescriptor(spec, outSplits, ",");
+        ResultSetId rsId = new ResultSetId(1);
+        IOperatorDescriptor printer = new ResultWriterOperatorDescriptor(spec, rsId, false, ordersDesc,
+                getResultSerializedAppenderFactory());
         PartitionConstraintHelper.addAbsoluteLocationConstraint(spec, printer, NC1_ID);
 
         spec.connect(new OneToOneConnectorDescriptor(spec), ordScanner, 0, sorter, 0);
@@ -135,6 +138,8 @@
                                 PointableBinaryComparatorFactory.of(UTF8StringPointable.FACTORY) }), sorter, 0,
                 printer, 0);
 
+        spec.addResultSetId(rsId);
+
         runTest(spec);
     }
 }
\ No newline at end of file
diff --git a/hyracks/hyracks-maven-plugins/hyracks-virtualcluster-maven-plugin/src/main/java/edu/uci/ics/hyracks/maven/plugin/HyracksNCStartMojo.java b/hyracks/hyracks-maven-plugins/hyracks-virtualcluster-maven-plugin/src/main/java/edu/uci/ics/hyracks/maven/plugin/HyracksNCStartMojo.java
index 47de024..fc06a68 100644
--- a/hyracks/hyracks-maven-plugins/hyracks-virtualcluster-maven-plugin/src/main/java/edu/uci/ics/hyracks/maven/plugin/HyracksNCStartMojo.java
+++ b/hyracks/hyracks-maven-plugins/hyracks-virtualcluster-maven-plugin/src/main/java/edu/uci/ics/hyracks/maven/plugin/HyracksNCStartMojo.java
@@ -55,6 +55,7 @@
         cmdLineBuffer.append(" -data-ip-address ").append(dataIpAddress);
         cmdLineBuffer.append(" -node-id ").append(nodeId);
         cmdLineBuffer.append(" -cluster-net-ip-address 127.0.0.1");
+        cmdLineBuffer.append(" -result-ip-address 127.0.0.1");
         if (ccPort != 0) {
             cmdLineBuffer.append(" -cc-port ").append(ccPort);
         }
diff --git a/hyracks/hyracks-net/src/main/java/edu/uci/ics/hyracks/net/protocols/muxdemux/MuxDemux.java b/hyracks/hyracks-net/src/main/java/edu/uci/ics/hyracks/net/protocols/muxdemux/MuxDemux.java
index c719bc4..e4df6b9 100644
--- a/hyracks/hyracks-net/src/main/java/edu/uci/ics/hyracks/net/protocols/muxdemux/MuxDemux.java
+++ b/hyracks/hyracks-net/src/main/java/edu/uci/ics/hyracks/net/protocols/muxdemux/MuxDemux.java
@@ -48,9 +48,9 @@
      * Constructor.
      * 
      * @param localAddress
-     *            - TCP/IP socket address to listen on
+     *            - TCP/IP socket address to listen on. Null for non-listening unidirectional sockets
      * @param listener
-     *            - Callback interface to report channel events
+     *            - Callback interface to report channel events. Null for non-listening unidirectional sockets
      * @param nThreads
      *            - Number of threads to use for data transfer
      * @param maxConnectionAttempts
diff --git a/hyracks/hyracks-net/src/main/java/edu/uci/ics/hyracks/net/protocols/tcp/TCPEndpoint.java b/hyracks/hyracks-net/src/main/java/edu/uci/ics/hyracks/net/protocols/tcp/TCPEndpoint.java
index d13a17e..a9061e1 100644
--- a/hyracks/hyracks-net/src/main/java/edu/uci/ics/hyracks/net/protocols/tcp/TCPEndpoint.java
+++ b/hyracks/hyracks-net/src/main/java/edu/uci/ics/hyracks/net/protocols/tcp/TCPEndpoint.java
@@ -45,15 +45,23 @@
     }
 
     public void start(InetSocketAddress localAddress) throws IOException {
-        serverSocketChannel = ServerSocketChannel.open();
-        ServerSocket serverSocket = serverSocketChannel.socket();
-        serverSocket.bind(localAddress);
-        this.localAddress = (InetSocketAddress) serverSocket.getLocalSocketAddress();
+        // Setup a server socket listening channel only if the TCPEndpoint is a listening endpoint.
+        if (localAddress != null) {
+            serverSocketChannel = ServerSocketChannel.open();
+            ServerSocket serverSocket = serverSocketChannel.socket();
+            serverSocket.bind(localAddress);
+            this.localAddress = (InetSocketAddress) serverSocket.getLocalSocketAddress();
+        }
+
         ioThreads = new IOThread[nThreads];
         for (int i = 0; i < ioThreads.length; ++i) {
             ioThreads[i] = new IOThread();
         }
-        ioThreads[0].registerServerSocket(serverSocketChannel);
+
+        if (localAddress != null) {
+            ioThreads[0].registerServerSocket(serverSocketChannel);
+        }
+
         for (int i = 0; i < ioThreads.length; ++i) {
             ioThreads[i].start();
         }
diff --git a/hyracks/hyracks-test-support/src/main/java/edu/uci/ics/hyracks/test/support/TestTaskContext.java b/hyracks/hyracks-test-support/src/main/java/edu/uci/ics/hyracks/test/support/TestTaskContext.java
index c122b25..0ca93b2 100644
--- a/hyracks/hyracks-test-support/src/main/java/edu/uci/ics/hyracks/test/support/TestTaskContext.java
+++ b/hyracks/hyracks-test-support/src/main/java/edu/uci/ics/hyracks/test/support/TestTaskContext.java
@@ -20,6 +20,7 @@
 import edu.uci.ics.hyracks.api.context.IHyracksTaskContext;
 import edu.uci.ics.hyracks.api.dataflow.TaskAttemptId;
 import edu.uci.ics.hyracks.api.dataflow.state.IStateObject;
+import edu.uci.ics.hyracks.api.dataset.IDatasetPartitionManager;
 import edu.uci.ics.hyracks.api.exceptions.HyracksDataException;
 import edu.uci.ics.hyracks.api.exceptions.HyracksException;
 import edu.uci.ics.hyracks.api.io.FileReference;
@@ -101,6 +102,11 @@
     }
 
     @Override
+    public IDatasetPartitionManager getDatasetPartitionManager() {
+        return null;
+    }
+
+    @Override
     public void sendApplicationMessageToCC(byte[] message, String nodeId) throws Exception {
         // TODO Auto-generated method stub
 
diff --git a/hyracks/pom.xml b/hyracks/pom.xml
index 09925fb..b699542 100644
--- a/hyracks/pom.xml
+++ b/hyracks/pom.xml
@@ -83,6 +83,8 @@
   <modules>
     <module>hyracks-ipc</module>
     <module>hyracks-api</module>
+    <module>hyracks-comm</module>
+    <module>hyracks-client</module>
     <module>hyracks-dataflow-common</module>
     <module>hyracks-dataflow-std</module>
     <module>hyracks-dataflow-hadoop</module>