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From "Eli Collins (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (MAPREDUCE-2846) approx 10% of all tasks fail with DefaultTaskController
Date Tue, 16 Aug 2011 16:49:27 GMT

    [ https://issues.apache.org/jira/browse/MAPREDUCE-2846?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13085837#comment-13085837

Eli Collins commented on MAPREDUCE-2846:

MR-2413 (disk failure handling) and MR-2415 (distribute userlogs onto multiple disks) were
only implemented for LinuxTaskController but change some of the relevant code, might be worth
looking into.

> 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:
>            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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