diff --git a/hyracks/hyracks-api/src/main/java/edu/uci/ics/hyracks/api/dataset/IDatasetPartitionReader.java b/hyracks/hyracks-api/src/main/java/edu/uci/ics/hyracks/api/dataset/IDatasetPartitionReader.java
new file mode 100644
index 0000000..8f5ed64
--- /dev/null
+++ b/hyracks/hyracks-api/src/main/java/edu/uci/ics/hyracks/api/dataset/IDatasetPartitionReader.java
@@ -0,0 +1,21 @@
+/*
+ * 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;
+
+public interface IDatasetPartitionReader {
+    public void writeTo(IFrameWriter writer);
+}
diff --git a/hyracks/hyracks-api/src/main/java/edu/uci/ics/hyracks/api/dataset/IDatasetPartitionWriter.java b/hyracks/hyracks-api/src/main/java/edu/uci/ics/hyracks/api/dataset/IDatasetPartitionWriter.java
new file mode 100644
index 0000000..42dc157
--- /dev/null
+++ b/hyracks/hyracks-api/src/main/java/edu/uci/ics/hyracks/api/dataset/IDatasetPartitionWriter.java
@@ -0,0 +1,22 @@
+/*
+ * 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.exceptions.HyracksDataException;
+
+public interface IDatasetPartitionWriter extends IFrameWriter {
+    public Page returnPage() throws HyracksDataException;
+}