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From "Devaraj Das (JIRA)" <j...@apache.org>
Subject [jira] Updated: (MAPREDUCE-838) Task succeeds even when committer.commitTask fails with IOException
Date Tue, 11 Aug 2009 05:53:14 GMT

     [ https://issues.apache.org/jira/browse/MAPREDUCE-838?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
]

Devaraj Das updated MAPREDUCE-838:
----------------------------------

    Resolution: Fixed
        Status: Resolved  (was: Patch Available)

I just committed this. Thanks, Amareshwari!

> 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
>            Assignee: Amareshwari Sriramadasu
>            Priority: Blocker
>             Fix For: 0.20.1
>
>         Attachments: patch-838-0.20.txt, patch-838-1-0.20.txt, patch-838-1.txt, patch-838.txt
>
>
> 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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