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https://issues.apache.org/jira/browse/HADOOP-5572?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=12689122#action_12689122
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Owen O'Malley commented on HADOOP-5572:
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I think we should reserve 33% of the map task's progress range for the final
sort. It is probably more than necessary, but is consistent with the reduce's
sort.
> The map progress value should have a separate phase for doing the final sort.
> -----------------------------------------------------------------------------
>
> Key: HADOOP-5572
> URL: https://issues.apache.org/jira/browse/HADOOP-5572
> Project: Hadoop Core
> Issue Type: Improvement
> Components: mapred
> Reporter: Owen O'Malley
> Assignee: Owen O'Malley
>
> Currently, the final spill and sort doesn't record any progress while it
> runs, leading to the perception that the map is done, but "stuck".
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