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Posted to mapreduce-issues@hadoop.apache.org by "Tassapol Athiapinya (JIRA)" <ji...@apache.org> on 2013/09/25 07:15:03 UTC

[jira] [Created] (MAPREDUCE-5533) Speculative execution does not function for reduce

Tassapol Athiapinya created MAPREDUCE-5533:
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             Summary: Speculative execution does not function for reduce
                 Key: MAPREDUCE-5533
                 URL: https://issues.apache.org/jira/browse/MAPREDUCE-5533
             Project: Hadoop Map/Reduce
          Issue Type: Bug
          Components: applicationmaster
            Reporter: Tassapol Athiapinya
             Fix For: 2.1.1-beta


We have sort job where reduce attempt does not send heartbeat in timely manner to application master. The AM should kick off another attempt to let job succeeds. What we find is the job fails and there is no speculation happening.

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