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https://issues.apache.org/jira/browse/MAPREDUCE-2846?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13090644#comment-13090644
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Hudson commented on MAPREDUCE-2846:
-----------------------------------
Integrated in Hadoop-Mapreduce-trunk #787 (See
[https://builds.apache.org/job/Hadoop-Mapreduce-trunk/787/])
MAPREDUCE-2846. Fix missing synchronization in the task log management.
(omalley)
omalley :
http://svn.apache.org/viewcvs.cgi/?root=Apache-SVN&view=rev&rev=1161324
Files :
* /hadoop/common/trunk/hadoop-mapreduce/CHANGES.txt
*
/hadoop/common/trunk/hadoop-mapreduce/hadoop-mr-client/hadoop-mapreduce-client-core/src/main/java/org/apache/hadoop/mapred/TaskLog.java
> a small % of all tasks fail with DefaultTaskController
> ------------------------------------------------------
>
> Key: MAPREDUCE-2846
> URL: https://issues.apache.org/jira/browse/MAPREDUCE-2846
> Project: Hadoop Map/Reduce
> Issue Type: Bug
> Components: task, task-controller, tasktracker
> Affects Versions: 0.20.204.0
> Reporter: Allen Wittenauer
> Assignee: Owen O'Malley
> Priority: Blocker
> Fix For: 0.20.204.0, 0.23.0
>
> Attachments: sync-trunk.patch, sync.patch
>
>
> After upgrading our test 0.20.203 grid to 0.20.204-rc2, we ran terasort to
> verify operation. While the job completed successfully, approx 10% of the
> tasks failed with task runner execution errors and the inability to create
> symlinks for attempt logs.
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