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https://issues.apache.org/jira/browse/MAPREDUCE-2846?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13087290#comment-13087290
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Bharath Mundlapudi commented on MAPREDUCE-2846:
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Hi Allen,
Can you post how you are configuring mapred.local.dir values? We have not seen
this problem in our cluster since we run with Linux task controller. But, Eli
is right, we did change Default task controller to make it consistent. Giving
more information will help us to understand better like how many disks you
have, mapred.local.dir value etc. or even mapred-site.xml. I am asking this
information to get an idea of how we can reproduce in our test cluster?
> 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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