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https://issues.apache.org/jira/browse/MAPREDUCE-838?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=12741284#action_12741284
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Amareshwari Sriramadasu commented on MAPREDUCE-838:
---------------------------------------------------
test-patch result:
{noformat}
[exec]
[exec]
[exec] +1 overall.
[exec]
[exec] +1 @author. The patch does not contain any @author tags.
[exec]
[exec] +1 tests included. The patch appears to include 3 new or
modified tests.
[exec]
[exec] +1 javadoc. The javadoc tool did not generate any warning
messages.
[exec]
[exec] +1 javac. The applied patch does not increase the total number
of javac compiler warnings.
[exec]
[exec] +1 findbugs. The patch does not introduce any new Findbugs
warnings.
[exec]
[exec] +1 release audit. The applied patch does not increase the
total number of release audit warnings.
[exec]
{noformat}
> 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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