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Date: Fri, 11 Nov 2011 22:38:52 +0000 (UTC)
From: "Eli Collins (Resolved) (JIRA)" <jira@apache.org>
To: mapreduce-dev@hadoop.apache.org
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Subject: [jira] [Resolved] (MAPREDUCE-2921) TaskTracker won't start with
 failed local directory
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     [ https://issues.apache.org/jira/browse/MAPREDUCE-2921?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]

Eli Collins resolved MAPREDUCE-2921.
------------------------------------

    Resolution: Duplicate

It turns out the TT will successfully start if there's a failed local directory (it checks the dirs and removes any that fail)  so it will start up fine with a failed or read-only directory etc. The failure I discovered in the first description is because checkDir doesn't fail if the directory exists and is not exectutable, once that's fixed the TT will start up in that case as well.
                
> TaskTracker won't start with failed local directory
> ---------------------------------------------------
>
>                 Key: MAPREDUCE-2921
>                 URL: https://issues.apache.org/jira/browse/MAPREDUCE-2921
>             Project: Hadoop Map/Reduce
>          Issue Type: Sub-task
>          Components: tasktracker
>    Affects Versions: 0.20.204.0
>            Reporter: Eli Collins
>            Assignee: Eli Collins
>
> Chmod'ing one of the mapred local directories so it's not executable will cause the TT to fail to start. Doing this after the TT has started will result in a TT that is up but can not execute tasks. 

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