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From "Hudson (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (MAPREDUCE-2846) a small % of all tasks fail with DefaultTaskController
Date Thu, 25 Aug 2011 00:03:29 GMT

    [ https://issues.apache.org/jira/browse/MAPREDUCE-2846?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13090629#comment-13090629
] 

Hudson commented on MAPREDUCE-2846:
-----------------------------------

Integrated in Hadoop-Hdfs-trunk-Commit #855 (See [https://builds.apache.org/job/Hadoop-Hdfs-trunk-Commit/855/])
    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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