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Date: Mon, 5 Sep 2011 14:24:10 +0000 (UTC)
From: "Devaraj K (JIRA)" <jira@apache.org>
To: mapreduce-issues@hadoop.apache.org
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Subject: [jira] [Commented] (MAPREDUCE-2846) a small % of all tasks fail
 with DefaultTaskController
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    [ https://issues.apache.org/jira/browse/MAPREDUCE-2846?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13097158#comment-13097158 ] 

Devaraj K commented on MAPREDUCE-2846:
--------------------------------------

I know it is too late to comment here but just want to inform. 

The trunk patch is not required because writeToIndexFile() which is private and calling from only one place i.e syncLogs() which is already synchronized method.

> 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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