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https://issues.apache.org/jira/browse/MAPREDUCE-1142?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Allen Wittenauer resolved MAPREDUCE-1142.
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Resolution: Fixed
> When cache.local.size is hit on one disk, DistributedCacheManager
> aggressively deletes old files on other disks too.
> --------------------------------------------------------------------------------------------------------------------
>
> Key: MAPREDUCE-1142
> URL: https://issues.apache.org/jira/browse/MAPREDUCE-1142
> Project: Hadoop Map/Reduce
> Issue Type: Bug
> Components: tasktracker
> Affects Versions: 0.20.2, 0.21.0, 0.22.0
> Reporter: Vinod Kumar Vavilapalli
>
> When the size of distributed cache files goes beyond
> {{mapreduce.tasktracker.cache.local.size}} on one disk,
> {{TrackerDistributedCacheManager}} deletes old files on other disks too. May
> be this is a bit aggressive.
> An important problem with this excess effort is that issue observed at
> MAPREDUCE-1141 will be more often.
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