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Posted to mapreduce-issues@hadoop.apache.org by "Allen Wittenauer (JIRA)" <ji...@apache.org> on 2011/08/16 18:41:29 UTC

[jira] [Commented] (MAPREDUCE-2846) approx 10% of all tasks fail with DefaultTaskController

    [ https://issues.apache.org/jira/browse/MAPREDUCE-2846?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13085828#comment-13085828 ] 

Allen Wittenauer commented on MAPREDUCE-2846:
---------------------------------------------

Some other details:

a) we do not have security on
b) we are not using the LinuxTaskController

> approx 10% 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
>            Priority: Blocker
>
> 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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