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Posted to mapreduce-dev@hadoop.apache.org by "Scott Chen (JIRA)" <ji...@apache.org> on 2010/02/26 05:30:29 UTC

[jira] Created: (MAPREDUCE-1538) TrackerDistributedCacheManager can fail because the number of subdirectories reaches system limit

TrackerDistributedCacheManager can fail because the number of subdirectories reaches system limit
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                 Key: MAPREDUCE-1538
                 URL: https://issues.apache.org/jira/browse/MAPREDUCE-1538
             Project: Hadoop Map/Reduce
          Issue Type: Bug
          Components: tasktracker
    Affects Versions: 0.22.0
            Reporter: Scott Chen
            Assignee: Scott Chen
             Fix For: 0.22.0


TrackerDistributedCacheManager deletes the cached files when the size goes up to a configured number.
But there is no such limit for the number of subdirectories. Therefore the number of subdirectories may grow large and exceed system limit.
This will make TT cannot create directory when getLocalCache and fails the tasks.

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