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From "Devaraj Das (JIRA)" <j...@apache.org>
Subject [jira] Created: (HADOOP-5184) OOM in the TaskTracker while serving map outputs
Date Fri, 06 Feb 2009 07:49:59 GMT
OOM in the TaskTracker while serving map outputs
------------------------------------------------

                 Key: HADOOP-5184
                 URL: https://issues.apache.org/jira/browse/HADOOP-5184
             Project: Hadoop Core
          Issue Type: Bug
          Components: mapred
            Reporter: Devaraj Das


Saw this exception in the TT logs:

2009-02-06 06:18:08,553 ERROR org.mortbay.log: EXCEPTION
java.lang.OutOfMemoryError: GC overhead limit exceeded
2009-02-06 06:18:11,247 ERROR org.mortbay.log: Error for /mapOutput
java.lang.OutOfMemoryError: GC overhead limit exceeded
2009-02-06 06:18:11,247 ERROR org.mortbay.log: Error for /mapOutput
java.lang.OutOfMemoryError: Java heap space
        at java.nio.HeapByteBuffer.<init>(HeapByteBuffer.java:39)
        at java.nio.ByteBuffer.allocate(ByteBuffer.java:312)
        at org.mortbay.io.nio.IndirectNIOBuffer.<init>(IndirectNIOBuffer.java:28)
        at org.mortbay.jetty.nio.AbstractNIOConnector.newBuffer(AbstractNIOConnector.java:71)
        at org.mortbay.jetty.AbstractBuffers.getBuffer(AbstractBuffers.java:131)
        at org.mortbay.jetty.HttpGenerator.addContent(HttpGenerator.java:145)
        at org.mortbay.jetty.AbstractGenerator$Output.write(AbstractGenerator.java:642)
        at org.mortbay.jetty.AbstractGenerator$Output.write(AbstractGenerator.java:577)
        at org.apache.hadoop.mapred.TaskTracker$MapOutputServlet.doGet(TaskTracker.java:2879)

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