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Posted to mapreduce-issues@hadoop.apache.org by "Chris Douglas (JIRA)" <ji...@apache.org> on 2013/04/30 13:06:16 UTC

[jira] [Created] (MAPREDUCE-5194) Heed interrupts during Fetcher shutdown

Chris Douglas created MAPREDUCE-5194:
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             Summary: Heed interrupts during Fetcher shutdown
                 Key: MAPREDUCE-5194
                 URL: https://issues.apache.org/jira/browse/MAPREDUCE-5194
             Project: Hadoop Map/Reduce
          Issue Type: Task
          Components: task
            Reporter: Chris Douglas
            Priority: Minor


In the current implementation, {{Fetcher}} instances usually exit gracefully when the shuffle succeeds. When it fails, threads are interrupted, but may continue running harmlessly until the JVM shuts down.

However, to generate consistent checkpoints, these threads should exit cleanly to quiesce the state of the shuffle.

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