Shuffle's getMapOutput() fails with EofException, followed by
IllegalStateException
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Key: HADOOP-5865
URL: https://issues.apache.org/jira/browse/HADOOP-5865
Project: Hadoop Core
Issue Type: Bug
Components: mapred
Environment: Sun Java 1.6.0_13, OpenSolaris, running on a SunFire 4150
(x64) 10 node cluster
Reporter: George Porter
During the shuffle phase, I'm seeing a large sequence of the following actions:
1) WARN org.apache.hadoop.mapred.TaskTracker:
getMapOutput(attempt_200905181452_0002_m_000010_0,0) failed :
org.mortbay.jetty.EofException
2) WARN org.mortbay.log: Committed before 410
getMapOutput(attempt_200905181452_0002_m_000010_0,0) failed :
org.mortbay.jetty.EofException
3) ERROR org.mortbay.log: /mapOutput java.lang.IllegalStateException: Committed
The map phase completes with 100%, and then the reduce phase crawls along with
the above errors in each of the TaskTracker logs. None of the tasktrackers get
lost. When I run non-data jobs like the 'pi' test from the example jar,
everything works fine.
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