diff --git a/algebricks/algebricks-examples/piglet-example/src/main/java/org/apache/hyracks/algebricks/examples/piglet/ast/ASTNode.java b/algebricks/algebricks-examples/piglet-example/src/main/java/org/apache/hyracks/algebricks/examples/piglet/ast/ASTNode.java
index 1bdf6b2..8fdad4c 100644
--- a/algebricks/algebricks-examples/piglet-example/src/main/java/org/apache/hyracks/algebricks/examples/piglet/ast/ASTNode.java
+++ b/algebricks/algebricks-examples/piglet-example/src/main/java/org/apache/hyracks/algebricks/examples/piglet/ast/ASTNode.java
@@ -12,7 +12,7 @@
  * See the License for the specific language governing permissions and
  * limitations under the License.
  */
-package edu.uci.ics.hyracks.algebricks.examples.piglet.ast;
+package org.apache.hyracks.algebricks.examples.piglet.ast;
 
 public abstract class ASTNode {
     public enum Tag {
diff --git a/algebricks/algebricks-examples/piglet-example/src/main/java/org/apache/hyracks/algebricks/examples/piglet/ast/AssignmentNode.java b/algebricks/algebricks-examples/piglet-example/src/main/java/org/apache/hyracks/algebricks/examples/piglet/ast/AssignmentNode.java
index 71cf26d..6584895 100644
--- a/algebricks/algebricks-examples/piglet-example/src/main/java/org/apache/hyracks/algebricks/examples/piglet/ast/AssignmentNode.java
+++ b/algebricks/algebricks-examples/piglet-example/src/main/java/org/apache/hyracks/algebricks/examples/piglet/ast/AssignmentNode.java
@@ -12,7 +12,7 @@
  * See the License for the specific language governing permissions and
  * limitations under the License.
  */
-package edu.uci.ics.hyracks.algebricks.examples.piglet.ast;
+package org.apache.hyracks.algebricks.examples.piglet.ast;
 
 public class AssignmentNode extends ASTNode {
     private String alias;
diff --git a/algebricks/algebricks-examples/piglet-example/src/main/java/org/apache/hyracks/algebricks/examples/piglet/ast/DumpNode.java b/algebricks/algebricks-examples/piglet-example/src/main/java/org/apache/hyracks/algebricks/examples/piglet/ast/DumpNode.java
index 42fca63..f48d5c3 100644
--- a/algebricks/algebricks-examples/piglet-example/src/main/java/org/apache/hyracks/algebricks/examples/piglet/ast/DumpNode.java
+++ b/algebricks/algebricks-examples/piglet-example/src/main/java/org/apache/hyracks/algebricks/examples/piglet/ast/DumpNode.java
@@ -12,7 +12,7 @@
  * See the License for the specific language governing permissions and
  * limitations under the License.
  */
-package edu.uci.ics.hyracks.algebricks.examples.piglet.ast;
+package org.apache.hyracks.algebricks.examples.piglet.ast;
 
 public class DumpNode extends RelationNode {
     private final String file;
diff --git a/algebricks/algebricks-examples/piglet-example/src/main/java/org/apache/hyracks/algebricks/examples/piglet/ast/ExpressionNode.java b/algebricks/algebricks-examples/piglet-example/src/main/java/org/apache/hyracks/algebricks/examples/piglet/ast/ExpressionNode.java
index c1482c2..262462c 100644
--- a/algebricks/algebricks-examples/piglet-example/src/main/java/org/apache/hyracks/algebricks/examples/piglet/ast/ExpressionNode.java
+++ b/algebricks/algebricks-examples/piglet-example/src/main/java/org/apache/hyracks/algebricks/examples/piglet/ast/ExpressionNode.java
@@ -12,7 +12,7 @@
  * See the License for the specific language governing permissions and
  * limitations under the License.
  */
-package edu.uci.ics.hyracks.algebricks.examples.piglet.ast;
+package org.apache.hyracks.algebricks.examples.piglet.ast;
 
 public abstract class ExpressionNode extends ASTNode {
 }
\ No newline at end of file
diff --git a/algebricks/algebricks-examples/piglet-example/src/main/java/org/apache/hyracks/algebricks/examples/piglet/ast/FieldAccessExpressionNode.java b/algebricks/algebricks-examples/piglet-example/src/main/java/org/apache/hyracks/algebricks/examples/piglet/ast/FieldAccessExpressionNode.java
index 90b54e6..2785cbe 100644
--- a/algebricks/algebricks-examples/piglet-example/src/main/java/org/apache/hyracks/algebricks/examples/piglet/ast/FieldAccessExpressionNode.java
+++ b/algebricks/algebricks-examples/piglet-example/src/main/java/org/apache/hyracks/algebricks/examples/piglet/ast/FieldAccessExpressionNode.java
@@ -12,7 +12,7 @@
  * See the License for the specific language governing permissions and
  * limitations under the License.
  */
-package edu.uci.ics.hyracks.algebricks.examples.piglet.ast;
+package org.apache.hyracks.algebricks.examples.piglet.ast;
 
 public class FieldAccessExpressionNode extends ExpressionNode {
     private String relationName;
diff --git a/algebricks/algebricks-examples/piglet-example/src/main/java/org/apache/hyracks/algebricks/examples/piglet/ast/FilterNode.java b/algebricks/algebricks-examples/piglet-example/src/main/java/org/apache/hyracks/algebricks/examples/piglet/ast/FilterNode.java
index b917cbb..628ee18 100644
--- a/algebricks/algebricks-examples/piglet-example/src/main/java/org/apache/hyracks/algebricks/examples/piglet/ast/FilterNode.java
+++ b/algebricks/algebricks-examples/piglet-example/src/main/java/org/apache/hyracks/algebricks/examples/piglet/ast/FilterNode.java
@@ -12,7 +12,7 @@
  * See the License for the specific language governing permissions and
  * limitations under the License.
  */
-package edu.uci.ics.hyracks.algebricks.examples.piglet.ast;
+package org.apache.hyracks.algebricks.examples.piglet.ast;
 
 public class FilterNode extends RelationNode {
     private String alias;
diff --git a/algebricks/algebricks-examples/piglet-example/src/main/java/org/apache/hyracks/algebricks/examples/piglet/ast/FunctionTag.java b/algebricks/algebricks-examples/piglet-example/src/main/java/org/apache/hyracks/algebricks/examples/piglet/ast/FunctionTag.java
index 523efb1..683e18c 100644
--- a/algebricks/algebricks-examples/piglet-example/src/main/java/org/apache/hyracks/algebricks/examples/piglet/ast/FunctionTag.java
+++ b/algebricks/algebricks-examples/piglet-example/src/main/java/org/apache/hyracks/algebricks/examples/piglet/ast/FunctionTag.java
@@ -12,7 +12,7 @@
  * See the License for the specific language governing permissions and
  * limitations under the License.
  */
-package edu.uci.ics.hyracks.algebricks.examples.piglet.ast;
+package org.apache.hyracks.algebricks.examples.piglet.ast;
 
 public enum FunctionTag {
     BOOLEAN_AND,
diff --git a/algebricks/algebricks-examples/piglet-example/src/main/java/org/apache/hyracks/algebricks/examples/piglet/ast/LiteralExpressionNode.java b/algebricks/algebricks-examples/piglet-example/src/main/java/org/apache/hyracks/algebricks/examples/piglet/ast/LiteralExpressionNode.java
index 7b3f2bd..5deed85 100644
--- a/algebricks/algebricks-examples/piglet-example/src/main/java/org/apache/hyracks/algebricks/examples/piglet/ast/LiteralExpressionNode.java
+++ b/algebricks/algebricks-examples/piglet-example/src/main/java/org/apache/hyracks/algebricks/examples/piglet/ast/LiteralExpressionNode.java
@@ -12,9 +12,9 @@
  * See the License for the specific language governing permissions and
  * limitations under the License.
  */
-package edu.uci.ics.hyracks.algebricks.examples.piglet.ast;
+package org.apache.hyracks.algebricks.examples.piglet.ast;
 
-import edu.uci.ics.hyracks.algebricks.examples.piglet.types.Type;
+import org.apache.hyracks.algebricks.examples.piglet.types.Type;
 
 public class LiteralExpressionNode extends ExpressionNode {
     private String image;
diff --git a/algebricks/algebricks-examples/piglet-example/src/main/java/org/apache/hyracks/algebricks/examples/piglet/ast/LoadNode.java b/algebricks/algebricks-examples/piglet-example/src/main/java/org/apache/hyracks/algebricks/examples/piglet/ast/LoadNode.java
index 0ff16b9..aa48e20 100644
--- a/algebricks/algebricks-examples/piglet-example/src/main/java/org/apache/hyracks/algebricks/examples/piglet/ast/LoadNode.java
+++ b/algebricks/algebricks-examples/piglet-example/src/main/java/org/apache/hyracks/algebricks/examples/piglet/ast/LoadNode.java
@@ -12,9 +12,9 @@
  * See the License for the specific language governing permissions and
  * limitations under the License.
  */
-package edu.uci.ics.hyracks.algebricks.examples.piglet.ast;
+package org.apache.hyracks.algebricks.examples.piglet.ast;
 
-import edu.uci.ics.hyracks.algebricks.examples.piglet.types.Schema;
+import org.apache.hyracks.algebricks.examples.piglet.types.Schema;
 
 public class LoadNode extends RelationNode {
     private String dataFile;
diff --git a/algebricks/algebricks-examples/piglet-example/src/main/java/org/apache/hyracks/algebricks/examples/piglet/ast/RelationNode.java b/algebricks/algebricks-examples/piglet-example/src/main/java/org/apache/hyracks/algebricks/examples/piglet/ast/RelationNode.java
index 9bd7324..2afd167 100644
--- a/algebricks/algebricks-examples/piglet-example/src/main/java/org/apache/hyracks/algebricks/examples/piglet/ast/RelationNode.java
+++ b/algebricks/algebricks-examples/piglet-example/src/main/java/org/apache/hyracks/algebricks/examples/piglet/ast/RelationNode.java
@@ -12,7 +12,7 @@
  * See the License for the specific language governing permissions and
  * limitations under the License.
  */
-package edu.uci.ics.hyracks.algebricks.examples.piglet.ast;
+package org.apache.hyracks.algebricks.examples.piglet.ast;
 
 public abstract class RelationNode extends ASTNode {
 }
\ No newline at end of file
diff --git a/algebricks/algebricks-examples/piglet-example/src/main/java/org/apache/hyracks/algebricks/examples/piglet/ast/ScalarFunctionExpressionNode.java b/algebricks/algebricks-examples/piglet-example/src/main/java/org/apache/hyracks/algebricks/examples/piglet/ast/ScalarFunctionExpressionNode.java
index a0ce89b..c318428 100644
--- a/algebricks/algebricks-examples/piglet-example/src/main/java/org/apache/hyracks/algebricks/examples/piglet/ast/ScalarFunctionExpressionNode.java
+++ b/algebricks/algebricks-examples/piglet-example/src/main/java/org/apache/hyracks/algebricks/examples/piglet/ast/ScalarFunctionExpressionNode.java
@@ -12,7 +12,7 @@
  * See the License for the specific language governing permissions and
  * limitations under the License.
  */
-package edu.uci.ics.hyracks.algebricks.examples.piglet.ast;
+package org.apache.hyracks.algebricks.examples.piglet.ast;
 
 import java.util.List;
 
diff --git a/algebricks/algebricks-examples/piglet-example/src/main/java/org/apache/hyracks/algebricks/examples/piglet/compiler/ConstantValue.java b/algebricks/algebricks-examples/piglet-example/src/main/java/org/apache/hyracks/algebricks/examples/piglet/compiler/ConstantValue.java
index 82276d0..11c7266 100644
--- a/algebricks/algebricks-examples/piglet-example/src/main/java/org/apache/hyracks/algebricks/examples/piglet/compiler/ConstantValue.java
+++ b/algebricks/algebricks-examples/piglet-example/src/main/java/org/apache/hyracks/algebricks/examples/piglet/compiler/ConstantValue.java
@@ -12,10 +12,10 @@
  * See the License for the specific language governing permissions and
  * limitations under the License.
  */
-package edu.uci.ics.hyracks.algebricks.examples.piglet.compiler;
+package org.apache.hyracks.algebricks.examples.piglet.compiler;
 
-import edu.uci.ics.hyracks.algebricks.core.algebra.expressions.IAlgebricksConstantValue;
-import edu.uci.ics.hyracks.algebricks.examples.piglet.types.Type;
+import org.apache.hyracks.algebricks.core.algebra.expressions.IAlgebricksConstantValue;
+import org.apache.hyracks.algebricks.examples.piglet.types.Type;
 
 public final class ConstantValue implements IAlgebricksConstantValue {
     private final Type type;
diff --git a/algebricks/algebricks-examples/piglet-example/src/main/java/org/apache/hyracks/algebricks/examples/piglet/compiler/PigletCompiler.java b/algebricks/algebricks-examples/piglet-example/src/main/java/org/apache/hyracks/algebricks/examples/piglet/compiler/PigletCompiler.java
index 820d016..9940831 100644
--- a/algebricks/algebricks-examples/piglet-example/src/main/java/org/apache/hyracks/algebricks/examples/piglet/compiler/PigletCompiler.java
+++ b/algebricks/algebricks-examples/piglet-example/src/main/java/org/apache/hyracks/algebricks/examples/piglet/compiler/PigletCompiler.java
@@ -12,7 +12,7 @@
  * See the License for the specific language governing permissions and
  * limitations under the License.
  */
-package edu.uci.ics.hyracks.algebricks.examples.piglet.compiler;
+package org.apache.hyracks.algebricks.examples.piglet.compiler;
 
 import java.io.Reader;
 import java.util.ArrayList;
@@ -26,62 +26,62 @@
 import org.apache.commons.lang3.mutable.Mutable;
 import org.apache.commons.lang3.mutable.MutableObject;
 
-import edu.uci.ics.hyracks.algebricks.common.exceptions.AlgebricksException;
-import edu.uci.ics.hyracks.algebricks.common.utils.Pair;
-import edu.uci.ics.hyracks.algebricks.compiler.api.HeuristicCompilerFactoryBuilder;
-import edu.uci.ics.hyracks.algebricks.compiler.api.ICompiler;
-import edu.uci.ics.hyracks.algebricks.compiler.api.ICompilerFactory;
-import edu.uci.ics.hyracks.algebricks.compiler.rewriter.rulecontrollers.SequentialFixpointRuleController;
-import edu.uci.ics.hyracks.algebricks.compiler.rewriter.rulecontrollers.SequentialOnceRuleController;
-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.ILogicalPlan;
-import edu.uci.ics.hyracks.algebricks.core.algebra.base.LogicalVariable;
-import edu.uci.ics.hyracks.algebricks.core.algebra.expressions.ConstantExpression;
-import edu.uci.ics.hyracks.algebricks.core.algebra.expressions.IExpressionTypeComputer;
-import edu.uci.ics.hyracks.algebricks.core.algebra.expressions.IVariableTypeEnvironment;
-import edu.uci.ics.hyracks.algebricks.core.algebra.expressions.LogicalExpressionJobGenToExpressionRuntimeProviderAdapter;
-import edu.uci.ics.hyracks.algebricks.core.algebra.expressions.ScalarFunctionCallExpression;
-import edu.uci.ics.hyracks.algebricks.core.algebra.expressions.VariableReferenceExpression;
-import edu.uci.ics.hyracks.algebricks.core.algebra.functions.AlgebricksBuiltinFunctions;
-import edu.uci.ics.hyracks.algebricks.core.algebra.functions.IFunctionInfo;
-import edu.uci.ics.hyracks.algebricks.core.algebra.metadata.IMetadataProvider;
-import edu.uci.ics.hyracks.algebricks.core.algebra.operators.logical.AssignOperator;
-import edu.uci.ics.hyracks.algebricks.core.algebra.operators.logical.DataSourceScanOperator;
-import edu.uci.ics.hyracks.algebricks.core.algebra.operators.logical.EmptyTupleSourceOperator;
-import edu.uci.ics.hyracks.algebricks.core.algebra.operators.logical.SelectOperator;
-import edu.uci.ics.hyracks.algebricks.core.algebra.operators.logical.WriteOperator;
-import edu.uci.ics.hyracks.algebricks.core.algebra.plan.ALogicalPlanImpl;
-import edu.uci.ics.hyracks.algebricks.core.algebra.prettyprint.LogicalOperatorPrettyPrintVisitor;
-import edu.uci.ics.hyracks.algebricks.core.algebra.prettyprint.PlanPrettyPrinter;
-import edu.uci.ics.hyracks.algebricks.core.rewriter.base.AbstractRuleController;
-import edu.uci.ics.hyracks.algebricks.core.rewriter.base.IAlgebraicRewriteRule;
-import edu.uci.ics.hyracks.algebricks.data.ISerializerDeserializerProvider;
-import edu.uci.ics.hyracks.algebricks.data.ITypeTraitProvider;
-import edu.uci.ics.hyracks.algebricks.examples.piglet.ast.ASTNode;
-import edu.uci.ics.hyracks.algebricks.examples.piglet.ast.AssignmentNode;
-import edu.uci.ics.hyracks.algebricks.examples.piglet.ast.DumpNode;
-import edu.uci.ics.hyracks.algebricks.examples.piglet.ast.ExpressionNode;
-import edu.uci.ics.hyracks.algebricks.examples.piglet.ast.FieldAccessExpressionNode;
-import edu.uci.ics.hyracks.algebricks.examples.piglet.ast.FilterNode;
-import edu.uci.ics.hyracks.algebricks.examples.piglet.ast.FunctionTag;
-import edu.uci.ics.hyracks.algebricks.examples.piglet.ast.LiteralExpressionNode;
-import edu.uci.ics.hyracks.algebricks.examples.piglet.ast.LoadNode;
-import edu.uci.ics.hyracks.algebricks.examples.piglet.ast.RelationNode;
-import edu.uci.ics.hyracks.algebricks.examples.piglet.ast.ScalarFunctionExpressionNode;
-import edu.uci.ics.hyracks.algebricks.examples.piglet.exceptions.PigletException;
-import edu.uci.ics.hyracks.algebricks.examples.piglet.metadata.PigletFileDataSink;
-import edu.uci.ics.hyracks.algebricks.examples.piglet.metadata.PigletFileDataSource;
-import edu.uci.ics.hyracks.algebricks.examples.piglet.metadata.PigletMetadataProvider;
-import edu.uci.ics.hyracks.algebricks.examples.piglet.parser.ParseException;
-import edu.uci.ics.hyracks.algebricks.examples.piglet.parser.PigletParser;
-import edu.uci.ics.hyracks.algebricks.examples.piglet.rewriter.PigletRewriteRuleset;
-import edu.uci.ics.hyracks.algebricks.examples.piglet.runtime.PigletExpressionJobGen;
-import edu.uci.ics.hyracks.algebricks.examples.piglet.types.Schema;
-import edu.uci.ics.hyracks.algebricks.examples.piglet.types.Type;
-import edu.uci.ics.hyracks.api.dataflow.value.ISerializerDeserializer;
-import edu.uci.ics.hyracks.api.dataflow.value.ITypeTraits;
-import edu.uci.ics.hyracks.api.job.JobSpecification;
+import org.apache.hyracks.algebricks.common.exceptions.AlgebricksException;
+import org.apache.hyracks.algebricks.common.utils.Pair;
+import org.apache.hyracks.algebricks.compiler.api.HeuristicCompilerFactoryBuilder;
+import org.apache.hyracks.algebricks.compiler.api.ICompiler;
+import org.apache.hyracks.algebricks.compiler.api.ICompilerFactory;
+import org.apache.hyracks.algebricks.compiler.rewriter.rulecontrollers.SequentialFixpointRuleController;
+import org.apache.hyracks.algebricks.compiler.rewriter.rulecontrollers.SequentialOnceRuleController;
+import org.apache.hyracks.algebricks.core.algebra.base.ILogicalExpression;
+import org.apache.hyracks.algebricks.core.algebra.base.ILogicalOperator;
+import org.apache.hyracks.algebricks.core.algebra.base.ILogicalPlan;
+import org.apache.hyracks.algebricks.core.algebra.base.LogicalVariable;
+import org.apache.hyracks.algebricks.core.algebra.expressions.ConstantExpression;
+import org.apache.hyracks.algebricks.core.algebra.expressions.IExpressionTypeComputer;
+import org.apache.hyracks.algebricks.core.algebra.expressions.IVariableTypeEnvironment;
+import org.apache.hyracks.algebricks.core.algebra.expressions.LogicalExpressionJobGenToExpressionRuntimeProviderAdapter;
+import org.apache.hyracks.algebricks.core.algebra.expressions.ScalarFunctionCallExpression;
+import org.apache.hyracks.algebricks.core.algebra.expressions.VariableReferenceExpression;
+import org.apache.hyracks.algebricks.core.algebra.functions.AlgebricksBuiltinFunctions;
+import org.apache.hyracks.algebricks.core.algebra.functions.IFunctionInfo;
+import org.apache.hyracks.algebricks.core.algebra.metadata.IMetadataProvider;
+import org.apache.hyracks.algebricks.core.algebra.operators.logical.AssignOperator;
+import org.apache.hyracks.algebricks.core.algebra.operators.logical.DataSourceScanOperator;
+import org.apache.hyracks.algebricks.core.algebra.operators.logical.EmptyTupleSourceOperator;
+import org.apache.hyracks.algebricks.core.algebra.operators.logical.SelectOperator;
+import org.apache.hyracks.algebricks.core.algebra.operators.logical.WriteOperator;
+import org.apache.hyracks.algebricks.core.algebra.plan.ALogicalPlanImpl;
+import org.apache.hyracks.algebricks.core.algebra.prettyprint.LogicalOperatorPrettyPrintVisitor;
+import org.apache.hyracks.algebricks.core.algebra.prettyprint.PlanPrettyPrinter;
+import org.apache.hyracks.algebricks.core.rewriter.base.AbstractRuleController;
+import org.apache.hyracks.algebricks.core.rewriter.base.IAlgebraicRewriteRule;
+import org.apache.hyracks.algebricks.data.ISerializerDeserializerProvider;
+import org.apache.hyracks.algebricks.data.ITypeTraitProvider;
+import org.apache.hyracks.algebricks.examples.piglet.ast.ASTNode;
+import org.apache.hyracks.algebricks.examples.piglet.ast.AssignmentNode;
+import org.apache.hyracks.algebricks.examples.piglet.ast.DumpNode;
+import org.apache.hyracks.algebricks.examples.piglet.ast.ExpressionNode;
+import org.apache.hyracks.algebricks.examples.piglet.ast.FieldAccessExpressionNode;
+import org.apache.hyracks.algebricks.examples.piglet.ast.FilterNode;
+import org.apache.hyracks.algebricks.examples.piglet.ast.FunctionTag;
+import org.apache.hyracks.algebricks.examples.piglet.ast.LiteralExpressionNode;
+import org.apache.hyracks.algebricks.examples.piglet.ast.LoadNode;
+import org.apache.hyracks.algebricks.examples.piglet.ast.RelationNode;
+import org.apache.hyracks.algebricks.examples.piglet.ast.ScalarFunctionExpressionNode;
+import org.apache.hyracks.algebricks.examples.piglet.exceptions.PigletException;
+import org.apache.hyracks.algebricks.examples.piglet.metadata.PigletFileDataSink;
+import org.apache.hyracks.algebricks.examples.piglet.metadata.PigletFileDataSource;
+import org.apache.hyracks.algebricks.examples.piglet.metadata.PigletMetadataProvider;
+import org.apache.hyracks.algebricks.examples.piglet.parser.ParseException;
+import org.apache.hyracks.algebricks.examples.piglet.parser.PigletParser;
+import org.apache.hyracks.algebricks.examples.piglet.rewriter.PigletRewriteRuleset;
+import org.apache.hyracks.algebricks.examples.piglet.runtime.PigletExpressionJobGen;
+import org.apache.hyracks.algebricks.examples.piglet.types.Schema;
+import org.apache.hyracks.algebricks.examples.piglet.types.Type;
+import org.apache.hyracks.api.dataflow.value.ISerializerDeserializer;
+import org.apache.hyracks.api.dataflow.value.ITypeTraits;
+import org.apache.hyracks.api.job.JobSpecification;
 
 public class PigletCompiler {
     private static final Logger LOGGER = Logger.getLogger(PigletCompiler.class.getName());
diff --git a/algebricks/algebricks-examples/piglet-example/src/main/java/org/apache/hyracks/algebricks/examples/piglet/compiler/PigletPrinterFactoryProvider.java b/algebricks/algebricks-examples/piglet-example/src/main/java/org/apache/hyracks/algebricks/examples/piglet/compiler/PigletPrinterFactoryProvider.java
index beb4e32..857f48e 100644
--- a/algebricks/algebricks-examples/piglet-example/src/main/java/org/apache/hyracks/algebricks/examples/piglet/compiler/PigletPrinterFactoryProvider.java
+++ b/algebricks/algebricks-examples/piglet-example/src/main/java/org/apache/hyracks/algebricks/examples/piglet/compiler/PigletPrinterFactoryProvider.java
@@ -12,20 +12,20 @@
  * See the License for the specific language governing permissions and
  * limitations under the License.
  */
-package edu.uci.ics.hyracks.algebricks.examples.piglet.compiler;
+package org.apache.hyracks.algebricks.examples.piglet.compiler;
 
 import java.io.IOException;
 import java.io.PrintStream;
 
-import edu.uci.ics.hyracks.algebricks.common.exceptions.AlgebricksException;
-import edu.uci.ics.hyracks.algebricks.data.IPrinter;
-import edu.uci.ics.hyracks.algebricks.data.IPrinterFactory;
-import edu.uci.ics.hyracks.algebricks.data.IPrinterFactoryProvider;
-import edu.uci.ics.hyracks.algebricks.data.impl.IntegerPrinterFactory;
-import edu.uci.ics.hyracks.algebricks.data.utils.WriteValueTools;
-import edu.uci.ics.hyracks.algebricks.examples.piglet.types.Type;
-import edu.uci.ics.hyracks.data.std.primitive.FloatPointable;
-import edu.uci.ics.hyracks.dataflow.common.data.marshalling.FloatSerializerDeserializer;
+import org.apache.hyracks.algebricks.common.exceptions.AlgebricksException;
+import org.apache.hyracks.algebricks.data.IPrinter;
+import org.apache.hyracks.algebricks.data.IPrinterFactory;
+import org.apache.hyracks.algebricks.data.IPrinterFactoryProvider;
+import org.apache.hyracks.algebricks.data.impl.IntegerPrinterFactory;
+import org.apache.hyracks.algebricks.data.utils.WriteValueTools;
+import org.apache.hyracks.algebricks.examples.piglet.types.Type;
+import org.apache.hyracks.data.std.primitive.FloatPointable;
+import org.apache.hyracks.dataflow.common.data.marshalling.FloatSerializerDeserializer;
 
 public class PigletPrinterFactoryProvider implements IPrinterFactoryProvider {
 
diff --git a/algebricks/algebricks-examples/piglet-example/src/main/java/org/apache/hyracks/algebricks/examples/piglet/exceptions/PigletException.java b/algebricks/algebricks-examples/piglet-example/src/main/java/org/apache/hyracks/algebricks/examples/piglet/exceptions/PigletException.java
index aa28f34..4bc7fd1 100644
--- a/algebricks/algebricks-examples/piglet-example/src/main/java/org/apache/hyracks/algebricks/examples/piglet/exceptions/PigletException.java
+++ b/algebricks/algebricks-examples/piglet-example/src/main/java/org/apache/hyracks/algebricks/examples/piglet/exceptions/PigletException.java
@@ -12,7 +12,7 @@
  * See the License for the specific language governing permissions and
  * limitations under the License.
  */
-package edu.uci.ics.hyracks.algebricks.examples.piglet.exceptions;
+package org.apache.hyracks.algebricks.examples.piglet.exceptions;
 
 public class PigletException extends Exception {
     private static final long serialVersionUID = 1L;
diff --git a/algebricks/algebricks-examples/piglet-example/src/main/java/org/apache/hyracks/algebricks/examples/piglet/metadata/FileSplitUtils.java b/algebricks/algebricks-examples/piglet-example/src/main/java/org/apache/hyracks/algebricks/examples/piglet/metadata/FileSplitUtils.java
index 1ac4259..512a779 100644
--- a/algebricks/algebricks-examples/piglet-example/src/main/java/org/apache/hyracks/algebricks/examples/piglet/metadata/FileSplitUtils.java
+++ b/algebricks/algebricks-examples/piglet-example/src/main/java/org/apache/hyracks/algebricks/examples/piglet/metadata/FileSplitUtils.java
@@ -12,12 +12,12 @@
  * See the License for the specific language governing permissions and
  * limitations under the License.
  */
-package edu.uci.ics.hyracks.algebricks.examples.piglet.metadata;
+package org.apache.hyracks.algebricks.examples.piglet.metadata;
 
 import java.io.File;
 
-import edu.uci.ics.hyracks.api.io.FileReference;
-import edu.uci.ics.hyracks.dataflow.std.file.FileSplit;
+import org.apache.hyracks.api.io.FileReference;
+import org.apache.hyracks.dataflow.std.file.FileSplit;
 
 public class FileSplitUtils {
     public static FileSplit[] parseFileSplits(String fileSplits) {
diff --git a/algebricks/algebricks-examples/piglet-example/src/main/java/org/apache/hyracks/algebricks/examples/piglet/metadata/PigletFileDataSink.java b/algebricks/algebricks-examples/piglet-example/src/main/java/org/apache/hyracks/algebricks/examples/piglet/metadata/PigletFileDataSink.java
index 6ab624d..6ca4ba9 100644
--- a/algebricks/algebricks-examples/piglet-example/src/main/java/org/apache/hyracks/algebricks/examples/piglet/metadata/PigletFileDataSink.java
+++ b/algebricks/algebricks-examples/piglet-example/src/main/java/org/apache/hyracks/algebricks/examples/piglet/metadata/PigletFileDataSink.java
@@ -12,13 +12,13 @@
  * See the License for the specific language governing permissions and
  * limitations under the License.
  */
-package edu.uci.ics.hyracks.algebricks.examples.piglet.metadata;
+package org.apache.hyracks.algebricks.examples.piglet.metadata;
 
-import edu.uci.ics.hyracks.algebricks.core.algebra.metadata.IDataSink;
-import edu.uci.ics.hyracks.algebricks.core.algebra.properties.FileSplitDomain;
-import edu.uci.ics.hyracks.algebricks.core.algebra.properties.IPartitioningProperty;
-import edu.uci.ics.hyracks.algebricks.core.algebra.properties.RandomPartitioningProperty;
-import edu.uci.ics.hyracks.dataflow.std.file.FileSplit;
+import org.apache.hyracks.algebricks.core.algebra.metadata.IDataSink;
+import org.apache.hyracks.algebricks.core.algebra.properties.FileSplitDomain;
+import org.apache.hyracks.algebricks.core.algebra.properties.IPartitioningProperty;
+import org.apache.hyracks.algebricks.core.algebra.properties.RandomPartitioningProperty;
+import org.apache.hyracks.dataflow.std.file.FileSplit;
 
 public class PigletFileDataSink implements IDataSink {
     private String file;
diff --git a/algebricks/algebricks-examples/piglet-example/src/main/java/org/apache/hyracks/algebricks/examples/piglet/metadata/PigletFileDataSource.java b/algebricks/algebricks-examples/piglet-example/src/main/java/org/apache/hyracks/algebricks/examples/piglet/metadata/PigletFileDataSource.java
index 076e15a..005cfd5 100644
--- a/algebricks/algebricks-examples/piglet-example/src/main/java/org/apache/hyracks/algebricks/examples/piglet/metadata/PigletFileDataSource.java
+++ b/algebricks/algebricks-examples/piglet-example/src/main/java/org/apache/hyracks/algebricks/examples/piglet/metadata/PigletFileDataSource.java
@@ -12,21 +12,21 @@
  * See the License for the specific language governing permissions and
  * limitations under the License.
  */
-package edu.uci.ics.hyracks.algebricks.examples.piglet.metadata;
+package org.apache.hyracks.algebricks.examples.piglet.metadata;
 
 import java.util.ArrayList;
 import java.util.List;
 
-import edu.uci.ics.hyracks.algebricks.core.algebra.base.LogicalVariable;
-import edu.uci.ics.hyracks.algebricks.core.algebra.metadata.IDataSource;
-import edu.uci.ics.hyracks.algebricks.core.algebra.metadata.IDataSourcePropertiesProvider;
-import edu.uci.ics.hyracks.algebricks.core.algebra.properties.FileSplitDomain;
-import edu.uci.ics.hyracks.algebricks.core.algebra.properties.FunctionalDependency;
-import edu.uci.ics.hyracks.algebricks.core.algebra.properties.ILocalStructuralProperty;
-import edu.uci.ics.hyracks.algebricks.core.algebra.properties.IPhysicalPropertiesVector;
-import edu.uci.ics.hyracks.algebricks.core.algebra.properties.RandomPartitioningProperty;
-import edu.uci.ics.hyracks.algebricks.core.algebra.properties.StructuralPropertiesVector;
-import edu.uci.ics.hyracks.dataflow.std.file.FileSplit;
+import org.apache.hyracks.algebricks.core.algebra.base.LogicalVariable;
+import org.apache.hyracks.algebricks.core.algebra.metadata.IDataSource;
+import org.apache.hyracks.algebricks.core.algebra.metadata.IDataSourcePropertiesProvider;
+import org.apache.hyracks.algebricks.core.algebra.properties.FileSplitDomain;
+import org.apache.hyracks.algebricks.core.algebra.properties.FunctionalDependency;
+import org.apache.hyracks.algebricks.core.algebra.properties.ILocalStructuralProperty;
+import org.apache.hyracks.algebricks.core.algebra.properties.IPhysicalPropertiesVector;
+import org.apache.hyracks.algebricks.core.algebra.properties.RandomPartitioningProperty;
+import org.apache.hyracks.algebricks.core.algebra.properties.StructuralPropertiesVector;
+import org.apache.hyracks.dataflow.std.file.FileSplit;
 
 public class PigletFileDataSource implements IDataSource<String> {
     private final String file;
diff --git a/algebricks/algebricks-examples/piglet-example/src/main/java/org/apache/hyracks/algebricks/examples/piglet/metadata/PigletFunction.java b/algebricks/algebricks-examples/piglet-example/src/main/java/org/apache/hyracks/algebricks/examples/piglet/metadata/PigletFunction.java
index ba5c5aa..6526077 100644
--- a/algebricks/algebricks-examples/piglet-example/src/main/java/org/apache/hyracks/algebricks/examples/piglet/metadata/PigletFunction.java
+++ b/algebricks/algebricks-examples/piglet-example/src/main/java/org/apache/hyracks/algebricks/examples/piglet/metadata/PigletFunction.java
@@ -12,10 +12,10 @@
  * See the License for the specific language governing permissions and
  * limitations under the License.
  */
-package edu.uci.ics.hyracks.algebricks.examples.piglet.metadata;
+package org.apache.hyracks.algebricks.examples.piglet.metadata;
 
-import edu.uci.ics.hyracks.algebricks.core.algebra.functions.AbstractFunctionInfo;
-import edu.uci.ics.hyracks.algebricks.core.algebra.functions.FunctionIdentifier;
+import org.apache.hyracks.algebricks.core.algebra.functions.AbstractFunctionInfo;
+import org.apache.hyracks.algebricks.core.algebra.functions.FunctionIdentifier;
 
 public class PigletFunction extends AbstractFunctionInfo {
     private static final long serialVersionUID = 1L;
diff --git a/algebricks/algebricks-examples/piglet-example/src/main/java/org/apache/hyracks/algebricks/examples/piglet/metadata/PigletMetadataProvider.java b/algebricks/algebricks-examples/piglet-example/src/main/java/org/apache/hyracks/algebricks/examples/piglet/metadata/PigletMetadataProvider.java
index 099520d..6cbc012 100644
--- a/algebricks/algebricks-examples/piglet-example/src/main/java/org/apache/hyracks/algebricks/examples/piglet/metadata/PigletMetadataProvider.java
+++ b/algebricks/algebricks-examples/piglet-example/src/main/java/org/apache/hyracks/algebricks/examples/piglet/metadata/PigletMetadataProvider.java
@@ -12,51 +12,51 @@
  * See the License for the specific language governing permissions and
  * limitations under the License.
  */
-package edu.uci.ics.hyracks.algebricks.examples.piglet.metadata;
+package org.apache.hyracks.algebricks.examples.piglet.metadata;
 
 import java.util.Collections;
 import java.util.HashMap;
 import java.util.List;
 import java.util.Map;
 
-import edu.uci.ics.hyracks.algebricks.common.constraints.AlgebricksAbsolutePartitionConstraint;
-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.utils.Pair;
-import edu.uci.ics.hyracks.algebricks.core.algebra.base.ILogicalExpression;
-import edu.uci.ics.hyracks.algebricks.core.algebra.base.LogicalVariable;
-import edu.uci.ics.hyracks.algebricks.core.algebra.expressions.IVariableTypeEnvironment;
-import edu.uci.ics.hyracks.algebricks.core.algebra.functions.AlgebricksBuiltinFunctions;
-import edu.uci.ics.hyracks.algebricks.core.algebra.functions.FunctionIdentifier;
-import edu.uci.ics.hyracks.algebricks.core.algebra.functions.IFunctionInfo;
-import edu.uci.ics.hyracks.algebricks.core.algebra.metadata.IDataSink;
-import edu.uci.ics.hyracks.algebricks.core.algebra.metadata.IDataSource;
-import edu.uci.ics.hyracks.algebricks.core.algebra.metadata.IDataSourceIndex;
-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.jobgen.impl.JobGenContext;
-import edu.uci.ics.hyracks.algebricks.data.IPrinterFactory;
-import edu.uci.ics.hyracks.algebricks.examples.piglet.types.Type;
-import edu.uci.ics.hyracks.algebricks.runtime.base.IPushRuntimeFactory;
-import edu.uci.ics.hyracks.algebricks.runtime.operators.std.SinkWriterRuntimeFactory;
-import edu.uci.ics.hyracks.algebricks.runtime.writers.PrinterBasedWriterFactory;
-import edu.uci.ics.hyracks.api.dataflow.IOperatorDescriptor;
-import edu.uci.ics.hyracks.api.dataflow.value.ISerializerDeserializer;
-import edu.uci.ics.hyracks.api.dataflow.value.RecordDescriptor;
-import edu.uci.ics.hyracks.api.job.JobSpecification;
-import edu.uci.ics.hyracks.dataflow.common.data.marshalling.FloatSerializerDeserializer;
-import edu.uci.ics.hyracks.dataflow.common.data.marshalling.IntegerSerializerDeserializer;
-import edu.uci.ics.hyracks.dataflow.common.data.marshalling.UTF8StringSerializerDeserializer;
-import edu.uci.ics.hyracks.dataflow.common.data.parsers.FloatParserFactory;
-import edu.uci.ics.hyracks.dataflow.common.data.parsers.IValueParserFactory;
-import edu.uci.ics.hyracks.dataflow.common.data.parsers.IntegerParserFactory;
-import edu.uci.ics.hyracks.dataflow.common.data.parsers.UTF8StringParserFactory;
-import edu.uci.ics.hyracks.dataflow.std.file.ConstantFileSplitProvider;
-import edu.uci.ics.hyracks.dataflow.std.file.DelimitedDataTupleParserFactory;
-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.ITupleParserFactory;
+import org.apache.hyracks.algebricks.common.constraints.AlgebricksAbsolutePartitionConstraint;
+import org.apache.hyracks.algebricks.common.constraints.AlgebricksPartitionConstraint;
+import org.apache.hyracks.algebricks.common.exceptions.AlgebricksException;
+import org.apache.hyracks.algebricks.common.utils.Pair;
+import org.apache.hyracks.algebricks.core.algebra.base.ILogicalExpression;
+import org.apache.hyracks.algebricks.core.algebra.base.LogicalVariable;
+import org.apache.hyracks.algebricks.core.algebra.expressions.IVariableTypeEnvironment;
+import org.apache.hyracks.algebricks.core.algebra.functions.AlgebricksBuiltinFunctions;
+import org.apache.hyracks.algebricks.core.algebra.functions.FunctionIdentifier;
+import org.apache.hyracks.algebricks.core.algebra.functions.IFunctionInfo;
+import org.apache.hyracks.algebricks.core.algebra.metadata.IDataSink;
+import org.apache.hyracks.algebricks.core.algebra.metadata.IDataSource;
+import org.apache.hyracks.algebricks.core.algebra.metadata.IDataSourceIndex;
+import org.apache.hyracks.algebricks.core.algebra.metadata.IMetadataProvider;
+import org.apache.hyracks.algebricks.core.algebra.operators.logical.IOperatorSchema;
+import org.apache.hyracks.algebricks.core.jobgen.impl.JobGenContext;
+import org.apache.hyracks.algebricks.data.IPrinterFactory;
+import org.apache.hyracks.algebricks.examples.piglet.types.Type;
+import org.apache.hyracks.algebricks.runtime.base.IPushRuntimeFactory;
+import org.apache.hyracks.algebricks.runtime.operators.std.SinkWriterRuntimeFactory;
+import org.apache.hyracks.algebricks.runtime.writers.PrinterBasedWriterFactory;
+import org.apache.hyracks.api.dataflow.IOperatorDescriptor;
+import org.apache.hyracks.api.dataflow.value.ISerializerDeserializer;
+import org.apache.hyracks.api.dataflow.value.RecordDescriptor;
+import org.apache.hyracks.api.job.JobSpecification;
+import org.apache.hyracks.dataflow.common.data.marshalling.FloatSerializerDeserializer;
+import org.apache.hyracks.dataflow.common.data.marshalling.IntegerSerializerDeserializer;
+import org.apache.hyracks.dataflow.common.data.marshalling.UTF8StringSerializerDeserializer;
+import org.apache.hyracks.dataflow.common.data.parsers.FloatParserFactory;
+import org.apache.hyracks.dataflow.common.data.parsers.IValueParserFactory;
+import org.apache.hyracks.dataflow.common.data.parsers.IntegerParserFactory;
+import org.apache.hyracks.dataflow.common.data.parsers.UTF8StringParserFactory;
+import org.apache.hyracks.dataflow.std.file.ConstantFileSplitProvider;
+import org.apache.hyracks.dataflow.std.file.DelimitedDataTupleParserFactory;
+import org.apache.hyracks.dataflow.std.file.FileScanOperatorDescriptor;
+import org.apache.hyracks.dataflow.std.file.FileSplit;
+import org.apache.hyracks.dataflow.std.file.IFileSplitProvider;
+import org.apache.hyracks.dataflow.std.file.ITupleParserFactory;
 
 public class PigletMetadataProvider implements IMetadataProvider<String, String> {
     private static final Map<FunctionIdentifier, PigletFunction> FN_MAP;
diff --git a/algebricks/algebricks-examples/piglet-example/src/main/java/org/apache/hyracks/algebricks/examples/piglet/rewriter/PigletRewriteRuleset.java b/algebricks/algebricks-examples/piglet-example/src/main/java/org/apache/hyracks/algebricks/examples/piglet/rewriter/PigletRewriteRuleset.java
index 1c2cfae..939a198 100644
--- a/algebricks/algebricks-examples/piglet-example/src/main/java/org/apache/hyracks/algebricks/examples/piglet/rewriter/PigletRewriteRuleset.java
+++ b/algebricks/algebricks-examples/piglet-example/src/main/java/org/apache/hyracks/algebricks/examples/piglet/rewriter/PigletRewriteRuleset.java
@@ -12,35 +12,35 @@
  * See the License for the specific language governing permissions and
  * limitations under the License.
  */
-package edu.uci.ics.hyracks.algebricks.examples.piglet.rewriter;
+package org.apache.hyracks.algebricks.examples.piglet.rewriter;
 
 import java.util.LinkedList;
 import java.util.List;
 
-import edu.uci.ics.hyracks.algebricks.core.rewriter.base.HeuristicOptimizer;
-import edu.uci.ics.hyracks.algebricks.core.rewriter.base.IAlgebraicRewriteRule;
-import edu.uci.ics.hyracks.algebricks.rewriter.rules.BreakSelectIntoConjunctsRule;
-import edu.uci.ics.hyracks.algebricks.rewriter.rules.ComplexJoinInferenceRule;
-import edu.uci.ics.hyracks.algebricks.rewriter.rules.ConsolidateAssignsRule;
-import edu.uci.ics.hyracks.algebricks.rewriter.rules.ConsolidateSelectsRule;
-import edu.uci.ics.hyracks.algebricks.rewriter.rules.EliminateSubplanRule;
-import edu.uci.ics.hyracks.algebricks.rewriter.rules.EnforceStructuralPropertiesRule;
-import edu.uci.ics.hyracks.algebricks.rewriter.rules.ExtractCommonOperatorsRule;
-import edu.uci.ics.hyracks.algebricks.rewriter.rules.ExtractGbyExpressionsRule;
-import edu.uci.ics.hyracks.algebricks.rewriter.rules.FactorRedundantGroupAndDecorVarsRule;
-import edu.uci.ics.hyracks.algebricks.rewriter.rules.InferTypesRule;
-import edu.uci.ics.hyracks.algebricks.rewriter.rules.InlineVariablesRule;
-import edu.uci.ics.hyracks.algebricks.rewriter.rules.IsolateHyracksOperatorsRule;
-import edu.uci.ics.hyracks.algebricks.rewriter.rules.PullSelectOutOfEqJoin;
-import edu.uci.ics.hyracks.algebricks.rewriter.rules.CopyLimitDownRule;
-import edu.uci.ics.hyracks.algebricks.rewriter.rules.PushProjectDownRule;
-import edu.uci.ics.hyracks.algebricks.rewriter.rules.PushProjectIntoDataSourceScanRule;
-import edu.uci.ics.hyracks.algebricks.rewriter.rules.PushSelectDownRule;
-import edu.uci.ics.hyracks.algebricks.rewriter.rules.PushSelectIntoJoinRule;
-import edu.uci.ics.hyracks.algebricks.rewriter.rules.ReinferAllTypesRule;
-import edu.uci.ics.hyracks.algebricks.rewriter.rules.RemoveUnusedAssignAndAggregateRule;
-import edu.uci.ics.hyracks.algebricks.rewriter.rules.SetAlgebricksPhysicalOperatorsRule;
-import edu.uci.ics.hyracks.algebricks.rewriter.rules.SetExecutionModeRule;
+import org.apache.hyracks.algebricks.core.rewriter.base.HeuristicOptimizer;
+import org.apache.hyracks.algebricks.core.rewriter.base.IAlgebraicRewriteRule;
+import org.apache.hyracks.algebricks.rewriter.rules.BreakSelectIntoConjunctsRule;
+import org.apache.hyracks.algebricks.rewriter.rules.ComplexJoinInferenceRule;
+import org.apache.hyracks.algebricks.rewriter.rules.ConsolidateAssignsRule;
+import org.apache.hyracks.algebricks.rewriter.rules.ConsolidateSelectsRule;
+import org.apache.hyracks.algebricks.rewriter.rules.EliminateSubplanRule;
+import org.apache.hyracks.algebricks.rewriter.rules.EnforceStructuralPropertiesRule;
+import org.apache.hyracks.algebricks.rewriter.rules.ExtractCommonOperatorsRule;
+import org.apache.hyracks.algebricks.rewriter.rules.ExtractGbyExpressionsRule;
+import org.apache.hyracks.algebricks.rewriter.rules.FactorRedundantGroupAndDecorVarsRule;
+import org.apache.hyracks.algebricks.rewriter.rules.InferTypesRule;
+import org.apache.hyracks.algebricks.rewriter.rules.InlineVariablesRule;
+import org.apache.hyracks.algebricks.rewriter.rules.IsolateHyracksOperatorsRule;
+import org.apache.hyracks.algebricks.rewriter.rules.PullSelectOutOfEqJoin;
+import org.apache.hyracks.algebricks.rewriter.rules.CopyLimitDownRule;
+import org.apache.hyracks.algebricks.rewriter.rules.PushProjectDownRule;
+import org.apache.hyracks.algebricks.rewriter.rules.PushProjectIntoDataSourceScanRule;
+import org.apache.hyracks.algebricks.rewriter.rules.PushSelectDownRule;
+import org.apache.hyracks.algebricks.rewriter.rules.PushSelectIntoJoinRule;
+import org.apache.hyracks.algebricks.rewriter.rules.ReinferAllTypesRule;
+import org.apache.hyracks.algebricks.rewriter.rules.RemoveUnusedAssignAndAggregateRule;
+import org.apache.hyracks.algebricks.rewriter.rules.SetAlgebricksPhysicalOperatorsRule;
+import org.apache.hyracks.algebricks.rewriter.rules.SetExecutionModeRule;
 
 public class PigletRewriteRuleset {
 
diff --git a/algebricks/algebricks-examples/piglet-example/src/main/java/org/apache/hyracks/algebricks/examples/piglet/runtime/PigletExpressionJobGen.java b/algebricks/algebricks-examples/piglet-example/src/main/java/org/apache/hyracks/algebricks/examples/piglet/runtime/PigletExpressionJobGen.java
index 9ae68bb..19ea30e 100644
--- a/algebricks/algebricks-examples/piglet-example/src/main/java/org/apache/hyracks/algebricks/examples/piglet/runtime/PigletExpressionJobGen.java
+++ b/algebricks/algebricks-examples/piglet-example/src/main/java/org/apache/hyracks/algebricks/examples/piglet/runtime/PigletExpressionJobGen.java
@@ -12,7 +12,7 @@
  * See the License for the specific language governing permissions and
  * limitations under the License.
  */
-package edu.uci.ics.hyracks.algebricks.examples.piglet.runtime;
+package org.apache.hyracks.algebricks.examples.piglet.runtime;
 
 import java.io.DataOutput;
 import java.util.Arrays;
@@ -20,33 +20,33 @@
 
 import org.apache.commons.lang3.mutable.Mutable;
 
-import edu.uci.ics.hyracks.algebricks.common.exceptions.AlgebricksException;
-import edu.uci.ics.hyracks.algebricks.core.algebra.base.ILogicalExpression;
-import edu.uci.ics.hyracks.algebricks.core.algebra.base.LogicalVariable;
-import edu.uci.ics.hyracks.algebricks.core.algebra.expressions.AggregateFunctionCallExpression;
-import edu.uci.ics.hyracks.algebricks.core.algebra.expressions.ConstantExpression;
-import edu.uci.ics.hyracks.algebricks.core.algebra.expressions.ILogicalExpressionJobGen;
-import edu.uci.ics.hyracks.algebricks.core.algebra.expressions.IVariableTypeEnvironment;
-import edu.uci.ics.hyracks.algebricks.core.algebra.expressions.ScalarFunctionCallExpression;
-import edu.uci.ics.hyracks.algebricks.core.algebra.expressions.StatefulFunctionCallExpression;
-import edu.uci.ics.hyracks.algebricks.core.algebra.expressions.UnnestingFunctionCallExpression;
-import edu.uci.ics.hyracks.algebricks.core.algebra.expressions.VariableReferenceExpression;
-import edu.uci.ics.hyracks.algebricks.core.algebra.operators.logical.IOperatorSchema;
-import edu.uci.ics.hyracks.algebricks.core.jobgen.impl.JobGenContext;
-import edu.uci.ics.hyracks.algebricks.examples.piglet.compiler.ConstantValue;
-import edu.uci.ics.hyracks.algebricks.examples.piglet.exceptions.PigletException;
-import edu.uci.ics.hyracks.algebricks.examples.piglet.runtime.functions.PigletFunctionRegistry;
-import edu.uci.ics.hyracks.algebricks.examples.piglet.types.Type;
-import edu.uci.ics.hyracks.algebricks.runtime.base.ICopyAggregateFunctionFactory;
-import edu.uci.ics.hyracks.algebricks.runtime.base.ICopyEvaluatorFactory;
-import edu.uci.ics.hyracks.algebricks.runtime.base.ICopyRunningAggregateFunctionFactory;
-import edu.uci.ics.hyracks.algebricks.runtime.base.ICopySerializableAggregateFunctionFactory;
-import edu.uci.ics.hyracks.algebricks.runtime.base.ICopyUnnestingFunctionFactory;
-import edu.uci.ics.hyracks.algebricks.runtime.evaluators.ColumnAccessEvalFactory;
-import edu.uci.ics.hyracks.algebricks.runtime.evaluators.ConstantEvalFactory;
-import edu.uci.ics.hyracks.data.std.util.ArrayBackedValueStorage;
-import edu.uci.ics.hyracks.dataflow.common.data.marshalling.IntegerSerializerDeserializer;
-import edu.uci.ics.hyracks.dataflow.common.data.marshalling.UTF8StringSerializerDeserializer;
+import org.apache.hyracks.algebricks.common.exceptions.AlgebricksException;
+import org.apache.hyracks.algebricks.core.algebra.base.ILogicalExpression;
+import org.apache.hyracks.algebricks.core.algebra.base.LogicalVariable;
+import org.apache.hyracks.algebricks.core.algebra.expressions.AggregateFunctionCallExpression;
+import org.apache.hyracks.algebricks.core.algebra.expressions.ConstantExpression;
+import org.apache.hyracks.algebricks.core.algebra.expressions.ILogicalExpressionJobGen;
+import org.apache.hyracks.algebricks.core.algebra.expressions.IVariableTypeEnvironment;
+import org.apache.hyracks.algebricks.core.algebra.expressions.ScalarFunctionCallExpression;
+import org.apache.hyracks.algebricks.core.algebra.expressions.StatefulFunctionCallExpression;
+import org.apache.hyracks.algebricks.core.algebra.expressions.UnnestingFunctionCallExpression;
+import org.apache.hyracks.algebricks.core.algebra.expressions.VariableReferenceExpression;
+import org.apache.hyracks.algebricks.core.algebra.operators.logical.IOperatorSchema;
+import org.apache.hyracks.algebricks.core.jobgen.impl.JobGenContext;
+import org.apache.hyracks.algebricks.examples.piglet.compiler.ConstantValue;
+import org.apache.hyracks.algebricks.examples.piglet.exceptions.PigletException;
+import org.apache.hyracks.algebricks.examples.piglet.runtime.functions.PigletFunctionRegistry;
+import org.apache.hyracks.algebricks.examples.piglet.types.Type;
+import org.apache.hyracks.algebricks.runtime.base.ICopyAggregateFunctionFactory;
+import org.apache.hyracks.algebricks.runtime.base.ICopyEvaluatorFactory;
+import org.apache.hyracks.algebricks.runtime.base.ICopyRunningAggregateFunctionFactory;
+import org.apache.hyracks.algebricks.runtime.base.ICopySerializableAggregateFunctionFactory;
+import org.apache.hyracks.algebricks.runtime.base.ICopyUnnestingFunctionFactory;
+import org.apache.hyracks.algebricks.runtime.evaluators.ColumnAccessEvalFactory;
+import org.apache.hyracks.algebricks.runtime.evaluators.ConstantEvalFactory;
+import org.apache.hyracks.data.std.util.ArrayBackedValueStorage;
+import org.apache.hyracks.dataflow.common.data.marshalling.IntegerSerializerDeserializer;
+import org.apache.hyracks.dataflow.common.data.marshalling.UTF8StringSerializerDeserializer;
 
 public class PigletExpressionJobGen implements ILogicalExpressionJobGen {
     @Override
diff --git a/algebricks/algebricks-examples/piglet-example/src/main/java/org/apache/hyracks/algebricks/examples/piglet/runtime/functions/IPigletFunctionEvaluatorFactoryBuilder.java b/algebricks/algebricks-examples/piglet-example/src/main/java/org/apache/hyracks/algebricks/examples/piglet/runtime/functions/IPigletFunctionEvaluatorFactoryBuilder.java
index c52a4bd..cd2e923 100644
--- a/algebricks/algebricks-examples/piglet-example/src/main/java/org/apache/hyracks/algebricks/examples/piglet/runtime/functions/IPigletFunctionEvaluatorFactoryBuilder.java
+++ b/algebricks/algebricks-examples/piglet-example/src/main/java/org/apache/hyracks/algebricks/examples/piglet/runtime/functions/IPigletFunctionEvaluatorFactoryBuilder.java
@@ -12,10 +12,10 @@
  * See the License for the specific language governing permissions and
  * limitations under the License.
  */
-package edu.uci.ics.hyracks.algebricks.examples.piglet.runtime.functions;
+package org.apache.hyracks.algebricks.examples.piglet.runtime.functions;
 
-import edu.uci.ics.hyracks.algebricks.core.algebra.functions.FunctionIdentifier;
-import edu.uci.ics.hyracks.algebricks.runtime.base.ICopyEvaluatorFactory;
+import org.apache.hyracks.algebricks.core.algebra.functions.FunctionIdentifier;
+import org.apache.hyracks.algebricks.runtime.base.ICopyEvaluatorFactory;
 
 public interface IPigletFunctionEvaluatorFactoryBuilder {
     public ICopyEvaluatorFactory buildEvaluatorFactory(FunctionIdentifier fid, ICopyEvaluatorFactory[] arguments);
diff --git a/algebricks/algebricks-examples/piglet-example/src/main/java/org/apache/hyracks/algebricks/examples/piglet/runtime/functions/IntegerEqFunctionEvaluatorFactory.java b/algebricks/algebricks-examples/piglet-example/src/main/java/org/apache/hyracks/algebricks/examples/piglet/runtime/functions/IntegerEqFunctionEvaluatorFactory.java
index e84964d..4e0f1ca 100644
--- a/algebricks/algebricks-examples/piglet-example/src/main/java/org/apache/hyracks/algebricks/examples/piglet/runtime/functions/IntegerEqFunctionEvaluatorFactory.java
+++ b/algebricks/algebricks-examples/piglet-example/src/main/java/org/apache/hyracks/algebricks/examples/piglet/runtime/functions/IntegerEqFunctionEvaluatorFactory.java
@@ -12,19 +12,19 @@
  * See the License for the specific language governing permissions and
  * limitations under the License.
  */
-package edu.uci.ics.hyracks.algebricks.examples.piglet.runtime.functions;
+package org.apache.hyracks.algebricks.examples.piglet.runtime.functions;
 
 import java.io.DataOutput;
 import java.io.IOException;
 
-import edu.uci.ics.hyracks.algebricks.common.exceptions.AlgebricksException;
-import edu.uci.ics.hyracks.algebricks.runtime.base.ICopyEvaluator;
-import edu.uci.ics.hyracks.algebricks.runtime.base.ICopyEvaluatorFactory;
-import edu.uci.ics.hyracks.data.std.api.IDataOutputProvider;
-import edu.uci.ics.hyracks.data.std.primitive.IntegerPointable;
-import edu.uci.ics.hyracks.data.std.util.ArrayBackedValueStorage;
-import edu.uci.ics.hyracks.dataflow.common.data.accessors.IFrameTupleReference;
-import edu.uci.ics.hyracks.dataflow.common.data.marshalling.IntegerSerializerDeserializer;
+import org.apache.hyracks.algebricks.common.exceptions.AlgebricksException;
+import org.apache.hyracks.algebricks.runtime.base.ICopyEvaluator;
+import org.apache.hyracks.algebricks.runtime.base.ICopyEvaluatorFactory;
+import org.apache.hyracks.data.std.api.IDataOutputProvider;
+import org.apache.hyracks.data.std.primitive.IntegerPointable;
+import org.apache.hyracks.data.std.util.ArrayBackedValueStorage;
+import org.apache.hyracks.dataflow.common.data.accessors.IFrameTupleReference;
+import org.apache.hyracks.dataflow.common.data.marshalling.IntegerSerializerDeserializer;
 
 public class IntegerEqFunctionEvaluatorFactory implements ICopyEvaluatorFactory {
     private static final long serialVersionUID = 1L;
diff --git a/algebricks/algebricks-examples/piglet-example/src/main/java/org/apache/hyracks/algebricks/examples/piglet/runtime/functions/PigletFunctionRegistry.java b/algebricks/algebricks-examples/piglet-example/src/main/java/org/apache/hyracks/algebricks/examples/piglet/runtime/functions/PigletFunctionRegistry.java
index 35015a5..1bc011e 100644
--- a/algebricks/algebricks-examples/piglet-example/src/main/java/org/apache/hyracks/algebricks/examples/piglet/runtime/functions/PigletFunctionRegistry.java
+++ b/algebricks/algebricks-examples/piglet-example/src/main/java/org/apache/hyracks/algebricks/examples/piglet/runtime/functions/PigletFunctionRegistry.java
@@ -12,16 +12,16 @@
  * See the License for the specific language governing permissions and
  * limitations under the License.
  */
-package edu.uci.ics.hyracks.algebricks.examples.piglet.runtime.functions;
+package org.apache.hyracks.algebricks.examples.piglet.runtime.functions;
 
 import java.util.Collections;
 import java.util.HashMap;
 import java.util.Map;
 
-import edu.uci.ics.hyracks.algebricks.core.algebra.functions.AlgebricksBuiltinFunctions;
-import edu.uci.ics.hyracks.algebricks.core.algebra.functions.FunctionIdentifier;
-import edu.uci.ics.hyracks.algebricks.examples.piglet.exceptions.PigletException;
-import edu.uci.ics.hyracks.algebricks.runtime.base.ICopyEvaluatorFactory;
+import org.apache.hyracks.algebricks.core.algebra.functions.AlgebricksBuiltinFunctions;
+import org.apache.hyracks.algebricks.core.algebra.functions.FunctionIdentifier;
+import org.apache.hyracks.algebricks.examples.piglet.exceptions.PigletException;
+import org.apache.hyracks.algebricks.runtime.base.ICopyEvaluatorFactory;
 
 public class PigletFunctionRegistry {
     private static final Map<FunctionIdentifier, IPigletFunctionEvaluatorFactoryBuilder> builderMap;
diff --git a/algebricks/algebricks-examples/piglet-example/src/main/java/org/apache/hyracks/algebricks/examples/piglet/types/BagType.java b/algebricks/algebricks-examples/piglet-example/src/main/java/org/apache/hyracks/algebricks/examples/piglet/types/BagType.java
index 9aec8bb..1af3609 100644
--- a/algebricks/algebricks-examples/piglet-example/src/main/java/org/apache/hyracks/algebricks/examples/piglet/types/BagType.java
+++ b/algebricks/algebricks-examples/piglet-example/src/main/java/org/apache/hyracks/algebricks/examples/piglet/types/BagType.java
@@ -12,7 +12,7 @@
  * See the License for the specific language governing permissions and
  * limitations under the License.
  */
-package edu.uci.ics.hyracks.algebricks.examples.piglet.types;
+package org.apache.hyracks.algebricks.examples.piglet.types;
 
 public class BagType extends Type {
     @Override
diff --git a/algebricks/algebricks-examples/piglet-example/src/main/java/org/apache/hyracks/algebricks/examples/piglet/types/CharArrayType.java b/algebricks/algebricks-examples/piglet-example/src/main/java/org/apache/hyracks/algebricks/examples/piglet/types/CharArrayType.java
index 4bef8ff..5c86ffe 100644
--- a/algebricks/algebricks-examples/piglet-example/src/main/java/org/apache/hyracks/algebricks/examples/piglet/types/CharArrayType.java
+++ b/algebricks/algebricks-examples/piglet-example/src/main/java/org/apache/hyracks/algebricks/examples/piglet/types/CharArrayType.java
@@ -12,7 +12,7 @@
  * See the License for the specific language governing permissions and
  * limitations under the License.
  */
-package edu.uci.ics.hyracks.algebricks.examples.piglet.types;
+package org.apache.hyracks.algebricks.examples.piglet.types;
 
 public class CharArrayType extends Type {
     public static final Type INSTANCE = new CharArrayType();
diff --git a/algebricks/algebricks-examples/piglet-example/src/main/java/org/apache/hyracks/algebricks/examples/piglet/types/DoubleType.java b/algebricks/algebricks-examples/piglet-example/src/main/java/org/apache/hyracks/algebricks/examples/piglet/types/DoubleType.java
index 8b7a0bd..2eb95b1 100644
--- a/algebricks/algebricks-examples/piglet-example/src/main/java/org/apache/hyracks/algebricks/examples/piglet/types/DoubleType.java
+++ b/algebricks/algebricks-examples/piglet-example/src/main/java/org/apache/hyracks/algebricks/examples/piglet/types/DoubleType.java
@@ -12,7 +12,7 @@
  * See the License for the specific language governing permissions and
  * limitations under the License.
  */
-package edu.uci.ics.hyracks.algebricks.examples.piglet.types;
+package org.apache.hyracks.algebricks.examples.piglet.types;
 
 public class DoubleType extends Type {
     public static final Type INSTANCE = new DoubleType();
diff --git a/algebricks/algebricks-examples/piglet-example/src/main/java/org/apache/hyracks/algebricks/examples/piglet/types/FloatType.java b/algebricks/algebricks-examples/piglet-example/src/main/java/org/apache/hyracks/algebricks/examples/piglet/types/FloatType.java
index 69f5db6..316fca0 100644
--- a/algebricks/algebricks-examples/piglet-example/src/main/java/org/apache/hyracks/algebricks/examples/piglet/types/FloatType.java
+++ b/algebricks/algebricks-examples/piglet-example/src/main/java/org/apache/hyracks/algebricks/examples/piglet/types/FloatType.java
@@ -12,7 +12,7 @@
  * See the License for the specific language governing permissions and
  * limitations under the License.
  */
-package edu.uci.ics.hyracks.algebricks.examples.piglet.types;
+package org.apache.hyracks.algebricks.examples.piglet.types;
 
 public class FloatType extends Type {
     public static final Type INSTANCE = new FloatType();
diff --git a/algebricks/algebricks-examples/piglet-example/src/main/java/org/apache/hyracks/algebricks/examples/piglet/types/IntegerType.java b/algebricks/algebricks-examples/piglet-example/src/main/java/org/apache/hyracks/algebricks/examples/piglet/types/IntegerType.java
index 9c568df..4d430d3 100644
--- a/algebricks/algebricks-examples/piglet-example/src/main/java/org/apache/hyracks/algebricks/examples/piglet/types/IntegerType.java
+++ b/algebricks/algebricks-examples/piglet-example/src/main/java/org/apache/hyracks/algebricks/examples/piglet/types/IntegerType.java
@@ -12,7 +12,7 @@
  * See the License for the specific language governing permissions and
  * limitations under the License.
  */
-package edu.uci.ics.hyracks.algebricks.examples.piglet.types;
+package org.apache.hyracks.algebricks.examples.piglet.types;
 
 public class IntegerType extends Type {
     public static final Type INSTANCE = new IntegerType();
diff --git a/algebricks/algebricks-examples/piglet-example/src/main/java/org/apache/hyracks/algebricks/examples/piglet/types/LongType.java b/algebricks/algebricks-examples/piglet-example/src/main/java/org/apache/hyracks/algebricks/examples/piglet/types/LongType.java
index b992afc..d19f723 100644
--- a/algebricks/algebricks-examples/piglet-example/src/main/java/org/apache/hyracks/algebricks/examples/piglet/types/LongType.java
+++ b/algebricks/algebricks-examples/piglet-example/src/main/java/org/apache/hyracks/algebricks/examples/piglet/types/LongType.java
@@ -12,7 +12,7 @@
  * See the License for the specific language governing permissions and
  * limitations under the License.
  */
-package edu.uci.ics.hyracks.algebricks.examples.piglet.types;
+package org.apache.hyracks.algebricks.examples.piglet.types;
 
 public class LongType extends Type {
     public static final Type INSTANCE = new LongType();
diff --git a/algebricks/algebricks-examples/piglet-example/src/main/java/org/apache/hyracks/algebricks/examples/piglet/types/MapType.java b/algebricks/algebricks-examples/piglet-example/src/main/java/org/apache/hyracks/algebricks/examples/piglet/types/MapType.java
index a46e40d..448fdb3 100644
--- a/algebricks/algebricks-examples/piglet-example/src/main/java/org/apache/hyracks/algebricks/examples/piglet/types/MapType.java
+++ b/algebricks/algebricks-examples/piglet-example/src/main/java/org/apache/hyracks/algebricks/examples/piglet/types/MapType.java
@@ -12,7 +12,7 @@
  * See the License for the specific language governing permissions and
  * limitations under the License.
  */
-package edu.uci.ics.hyracks.algebricks.examples.piglet.types;
+package org.apache.hyracks.algebricks.examples.piglet.types;
 
 public class MapType extends Type {
     @Override
diff --git a/algebricks/algebricks-examples/piglet-example/src/main/java/org/apache/hyracks/algebricks/examples/piglet/types/Schema.java b/algebricks/algebricks-examples/piglet-example/src/main/java/org/apache/hyracks/algebricks/examples/piglet/types/Schema.java
index 1702353..fccb5ad 100644
--- a/algebricks/algebricks-examples/piglet-example/src/main/java/org/apache/hyracks/algebricks/examples/piglet/types/Schema.java
+++ b/algebricks/algebricks-examples/piglet-example/src/main/java/org/apache/hyracks/algebricks/examples/piglet/types/Schema.java
@@ -12,11 +12,11 @@
  * See the License for the specific language governing permissions and
  * limitations under the License.
  */
-package edu.uci.ics.hyracks.algebricks.examples.piglet.types;
+package org.apache.hyracks.algebricks.examples.piglet.types;
 
 import java.util.List;
 
-import edu.uci.ics.hyracks.algebricks.common.utils.Pair;
+import org.apache.hyracks.algebricks.common.utils.Pair;
 
 public class Schema {
     private List<Pair<String, Type>> schema;
diff --git a/algebricks/algebricks-examples/piglet-example/src/main/java/org/apache/hyracks/algebricks/examples/piglet/types/TupleType.java b/algebricks/algebricks-examples/piglet-example/src/main/java/org/apache/hyracks/algebricks/examples/piglet/types/TupleType.java
index 429026f..8c4e19e 100644
--- a/algebricks/algebricks-examples/piglet-example/src/main/java/org/apache/hyracks/algebricks/examples/piglet/types/TupleType.java
+++ b/algebricks/algebricks-examples/piglet-example/src/main/java/org/apache/hyracks/algebricks/examples/piglet/types/TupleType.java
@@ -12,7 +12,7 @@
  * See the License for the specific language governing permissions and
  * limitations under the License.
  */
-package edu.uci.ics.hyracks.algebricks.examples.piglet.types;
+package org.apache.hyracks.algebricks.examples.piglet.types;
 
 public class TupleType extends Type {
     @Override
diff --git a/algebricks/algebricks-examples/piglet-example/src/main/java/org/apache/hyracks/algebricks/examples/piglet/types/Type.java b/algebricks/algebricks-examples/piglet-example/src/main/java/org/apache/hyracks/algebricks/examples/piglet/types/Type.java
index 36efcea..81bfd6e 100644
--- a/algebricks/algebricks-examples/piglet-example/src/main/java/org/apache/hyracks/algebricks/examples/piglet/types/Type.java
+++ b/algebricks/algebricks-examples/piglet-example/src/main/java/org/apache/hyracks/algebricks/examples/piglet/types/Type.java
@@ -12,7 +12,7 @@
  * See the License for the specific language governing permissions and
  * limitations under the License.
  */
-package edu.uci.ics.hyracks.algebricks.examples.piglet.types;
+package org.apache.hyracks.algebricks.examples.piglet.types;
 
 public abstract class Type {
     public enum Tag {
diff --git a/algebricks/algebricks-examples/piglet-example/src/main/javacc/PigletParser.jj b/algebricks/algebricks-examples/piglet-example/src/main/javacc/PigletParser.jj
index 2541536..ee6f912 100644
--- a/algebricks/algebricks-examples/piglet-example/src/main/javacc/PigletParser.jj
+++ b/algebricks/algebricks-examples/piglet-example/src/main/javacc/PigletParser.jj
@@ -20,12 +20,12 @@
 
 PARSER_BEGIN(PigletParser)
 
-package edu.uci.ics.hyracks.algebricks.examples.piglet.parser;
+package org.apache.hyracks.algebricks.examples.piglet.parser;
 
 import java.util.*;
-import edu.uci.ics.hyracks.algebricks.common.utils.Pair;
-import edu.uci.ics.hyracks.algebricks.examples.piglet.ast.*;
-import edu.uci.ics.hyracks.algebricks.examples.piglet.types.*;
+import org.apache.hyracks.algebricks.common.utils.Pair;
+import org.apache.hyracks.algebricks.examples.piglet.ast.*;
+import org.apache.hyracks.algebricks.examples.piglet.types.*;
 
 public class PigletParser {
     private ExpressionNode createFunction(FunctionTag fTag, String fName, ExpressionNode... arguments) {