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From "Runping Qi (JIRA)" <j...@apache.org>
Subject [jira] Commented: (HADOOP-2933) Reduce task stuck at 95.71% for a long time and the speculative execution does not kick in
Date Fri, 28 Mar 2008 14:06:24 GMT

    [ https://issues.apache.org/jira/browse/HADOOP-2933?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=12583037#action_12583037
] 

Runping Qi commented on HADOOP-2933:
------------------------------------


They both are related to speculative execution.


> Reduce task stuck at 95.71% for a long time and the speculative execution does not kick
in
> ------------------------------------------------------------------------------------------
>
>                 Key: HADOOP-2933
>                 URL: https://issues.apache.org/jira/browse/HADOOP-2933
>             Project: Hadoop Core
>          Issue Type: Bug
>          Components: mapred
>    Affects Versions: 0.16.0
>            Reporter: Runping Qi
>
> I have a job with speculative execution set on.
> However, its last reduce task has been stuck for a long time at 95.71%, and no speculative
execution was started.
> I did see speculative executions for other tasks started and killed though.

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