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https://issues.apache.org/jira/browse/MAPREDUCE-94?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Harsh J resolved MAPREDUCE-94.
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Resolution: Duplicate
Resolved via HADOOP-2141. Closing out as dupe.
> Speculative execution does not work properly
> --------------------------------------------
>
> Key: MAPREDUCE-94
> URL: https://issues.apache.org/jira/browse/MAPREDUCE-94
> Project: Hadoop Map/Reduce
> Issue Type: Bug
> Reporter: Runping Qi
>
> One mapper of my job stuck when it reached 87.7%.
> Speculative execution was set to true.
> But no speculative execution was fired for that task.
> The whole job was stalled.
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