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https://issues.apache.org/jira/browse/HADOOP-3442?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=12601428#action_12601428
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Chad Whipkey commented on HADOOP-3442:
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This may be useful to add: http://en.wikipedia.org/wiki/Introsort
(essentially, switch from quicksort to heapsort once for subsorts beyond a
certain depth).
> QuickSort may get into unbounded recursion
> ------------------------------------------
>
> Key: HADOOP-3442
> URL: https://issues.apache.org/jira/browse/HADOOP-3442
> Project: Hadoop Core
> Issue Type: Bug
> Components: mapred
> Affects Versions: 0.17.0
> Reporter: Runping Qi
> Assignee: Chris Douglas
> Attachments: HADOOP-3442.patch
>
>
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