diff --git a/hyracks/hyracks-dataflow-common/pom.xml b/hyracks/hyracks-dataflow-common/pom.xml
index 393e97f..a0ffb66 100644
--- a/hyracks/hyracks-dataflow-common/pom.xml
+++ b/hyracks/hyracks-dataflow-common/pom.xml
@@ -15,8 +15,8 @@
         <artifactId>maven-compiler-plugin</artifactId>
         <version>2.0.2</version>
         <configuration>
-          <source>1.7</source>
-          <target>1.7</target>
+          <source>1.6</source>
+          <target>1.6</target>
         </configuration>
       </plugin>
     </plugins>
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
deleted file mode 100644
index 95833b1..0000000
--- a/hyracks/hyracks-dataflow-common/src/main/java/edu/uci/ics/hyracks/dataflow/common/comm/io/FrameOutputStream.java
+++ /dev/null
@@ -1,53 +0,0 @@
-/*
- * 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;
-    }
-}