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https://issues.apache.org/jira/browse/MAPREDUCE-10?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
]
Harsh J resolved MAPREDUCE-10.
------------------------------
Resolution: Not A Problem
This has gone stale, and has not been reported again recently. Was probably
fixed at some point.
> NPE in SocketChannelOutputStream during large sort benchmark
> ------------------------------------------------------------
>
> Key: MAPREDUCE-10
> URL: https://issues.apache.org/jira/browse/MAPREDUCE-10
> Project: Hadoop Map/Reduce
> Issue Type: Bug
> Reporter: Nigel Daley
>
> Running sort benchmark, I saw this NPE trace in the JobTracker log
> ...
> 2007-02-04 02:07:23,753 INFO org.apache.hadoop.mapred.JobInProgress: Already
> complete TIP tip_0002_m_032689 has completed task task_0002_m_032689_2
> 2007-02-04 02:07:23,753 INFO org.apache.hadoop.mapred.TaskInProgress: Task
> 'task_0002_m_032689_2' has completed.
> 2007-02-04 02:07:24,566 WARN org.apache.hadoop.ipc.Server: handler output
> errorjava.io.IOException: Connection reset by peer
> at sun.nio.ch.FileDispatcher.write0(Native Method)
> at sun.nio.ch.SocketDispatcher.write(SocketDispatcher.java:29)
> at sun.nio.ch.IOUtil.writeFromNativeBuffer(IOUtil.java:104)
> at sun.nio.ch.IOUtil.write(IOUtil.java:75)
> at sun.nio.ch.SocketChannelImpl.write(SocketChannelImpl.java:302)
> at
> org.apache.hadoop.ipc.SocketChannelOutputStream.flushBuffer(SocketChannelOutputStream.java:108)
> at
> org.apache.hadoop.ipc.SocketChannelOutputStream.write(SocketChannelOutputStream.java:89)
> at
> java.io.BufferedOutputStream.flushBuffer(BufferedOutputStream.java:65)
> at java.io.BufferedOutputStream.flush(BufferedOutputStream.java:123)
> at java.io.DataOutputStream.flush(DataOutputStream.java:106)
> at org.apache.hadoop.ipc.Server$Handler.run(Server.java:556)
> 2007-02-04 02:07:24,569 WARN org.apache.hadoop.ipc.Server: handler output
> error
> java.lang.NullPointerException
> at
> org.apache.hadoop.ipc.SocketChannelOutputStream.flushBuffer(SocketChannelOutputStream.java:108)
> at
> org.apache.hadoop.ipc.SocketChannelOutputStream.write(SocketChannelOutputStream.java:89)
> at
> java.io.BufferedOutputStream.flushBuffer(BufferedOutputStream.java:65)
> at java.io.BufferedOutputStream.flush(BufferedOutputStream.java:123)
> at java.io.DataOutputStream.flush(DataOutputStream.java:106)
> at org.apache.hadoop.ipc.Server$Handler.run(Server.java:556)
> 2007-02-04 02:07:32,510 INFO org.apache.hadoop.mapred.JobInProgress: Task
> 'task_0002_m_077715_2' has completed tip_0002_m_077715 successfully.
> ...
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