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From "Koji Noguchi (JIRA)" <j...@apache.org>
Subject [jira] Created: (MAPREDUCE-838) Task succeeds even when committer.commitTask fails with IOException
Date Fri, 07 Aug 2009 20:09:14 GMT
Task succeeds even when committer.commitTask fails with IOException
-------------------------------------------------------------------

                 Key: MAPREDUCE-838
                 URL: https://issues.apache.org/jira/browse/MAPREDUCE-838
             Project: Hadoop Map/Reduce
          Issue Type: Bug
          Components: task
    Affects Versions: 0.20.1
            Reporter: Koji Noguchi


In MAPREDUCE-837, job succeeded with empty output even though all the tasks were throwing
IOException at commiter.commitTask.

{noformat}
2009-08-07 17:51:47,458 INFO org.apache.hadoop.mapred.TaskRunner: Task attempt_200907301448_8771_r_000000_0
is allowed to commit now
2009-08-07 17:51:47,466 WARN org.apache.hadoop.mapred.TaskRunner: Failure committing: java.io.IOException:
Can not get the relative path: \
base = hdfs://mynamenode:8020/user/knoguchi/test2.har/_temporary/_attempt_200907301448_8771_r_000000_0
\
child = hdfs://mynamenode/user/knoguchi/test2.har/_temporary/_attempt_200907301448_8771_r_000000_0/_index
  at org.apache.hadoop.mapred.FileOutputCommitter.getFinalPath(FileOutputCommitter.java:150)
  at org.apache.hadoop.mapred.FileOutputCommitter.moveTaskOutputs(FileOutputCommitter.java:106)
  at org.apache.hadoop.mapred.FileOutputCommitter.moveTaskOutputs(FileOutputCommitter.java:126)
  at org.apache.hadoop.mapred.FileOutputCommitter.commitTask(FileOutputCommitter.java:86)
  at org.apache.hadoop.mapred.OutputCommitter.commitTask(OutputCommitter.java:171)
  at org.apache.hadoop.mapred.Task.commit(Task.java:768)
  at org.apache.hadoop.mapred.Task.done(Task.java:692)
  at org.apache.hadoop.mapred.ReduceTask.run(ReduceTask.java:417)
  at org.apache.hadoop.mapred.Child.main(Child.java:170)

2009-08-07 17:51:47,468 WARN org.apache.hadoop.mapred.TaskRunner: Failure asking whether task
can commit: java.io.IOException: \
Can not get the relative path: base = hdfs://mynamenode:8020/user/knoguchi/test2.har/_temporary/_attempt_200907301448_8771_r_000000_0
\
child = hdfs://mynamenode/user/knoguchi/test2.har/_temporary/_attempt_200907301448_8771_r_000000_0/_index
  at org.apache.hadoop.mapred.FileOutputCommitter.getFinalPath(FileOutputCommitter.java:150)
  at org.apache.hadoop.mapred.FileOutputCommitter.moveTaskOutputs(FileOutputCommitter.java:106)
  at org.apache.hadoop.mapred.FileOutputCommitter.moveTaskOutputs(FileOutputCommitter.java:126)
  at org.apache.hadoop.mapred.FileOutputCommitter.commitTask(FileOutputCommitter.java:86)
  at org.apache.hadoop.mapred.OutputCommitter.commitTask(OutputCommitter.java:171)
  at org.apache.hadoop.mapred.Task.commit(Task.java:768)
  at org.apache.hadoop.mapred.Task.done(Task.java:692)
  at org.apache.hadoop.mapred.ReduceTask.run(ReduceTask.java:417)
  at org.apache.hadoop.mapred.Child.main(Child.java:170)

2009-08-07 17:51:47,469 INFO org.apache.hadoop.mapred.TaskRunner: Task attempt_200907301448_8771_r_000000_0
is allowed to commit now
2009-08-07 17:51:47,472 INFO org.apache.hadoop.mapred.TaskRunner: Task 'attempt_200907301448_8771_r_000000_0'
done.


{noformat}


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