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From "Matt Foley (Updated) (JIRA)" <j...@apache.org>
Subject [jira] [Updated] (MAPREDUCE-3011) TT should remove bad local dirs from conf to prevent constant disk checking
Date Wed, 19 Oct 2011 07:45:10 GMT

     [ https://issues.apache.org/jira/browse/MAPREDUCE-3011?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
]

Matt Foley updated MAPREDUCE-3011:
----------------------------------

    Target Version/s: 0.20.206.0
       Fix Version/s:     (was: 0.20.205.0)
    
> TT should remove bad local dirs from conf to prevent constant disk checking
> ---------------------------------------------------------------------------
>
>                 Key: MAPREDUCE-3011
>                 URL: https://issues.apache.org/jira/browse/MAPREDUCE-3011
>             Project: Hadoop Map/Reduce
>          Issue Type: Sub-task
>          Components: tasktracker
>    Affects Versions: 0.20.204.0
>            Reporter: Eli Collins
>
> Per HADOOP-7551 the TT does not remove bad mapred.local.dirs from the conf so after a
single disk failure *every* call to get a local path for reading or writing results in a disk
check of *all* configured local dirs. After detecting that a local dir is bad we should remove
it from the conf so that we don't repeatedly perform this expensive operation.

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