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From "Vinod Kumar Vavilapalli (JIRA)" <j...@apache.org>
Subject [jira] [Updated] (MAPREDUCE-5533) Speculative execution does not function for reduce
Date Sun, 29 Sep 2013 17:28:25 GMT

     [ https://issues.apache.org/jira/browse/MAPREDUCE-5533?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
]

Vinod Kumar Vavilapalli updated MAPREDUCE-5533:
-----------------------------------------------

    Target Version/s: 2.1.2-beta
       Fix Version/s:     (was: 2.1.1-beta)

> 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
>            Assignee: Xuan Gong
>         Attachments: MAPREDUCE-5533.1.patch, MAPREDUCE-5533.2.patch, MAPREDUCE-5533.3.patch,
MAPREDUCE-5533.4.patch
>
>
> 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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