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Posted to mapreduce-issues@hadoop.apache.org by "Allen Wittenauer (JIRA)" <ji...@apache.org> on 2014/07/19 02:20:40 UTC

[jira] [Updated] (MAPREDUCE-298) multi-threaded merge phase

     [ https://issues.apache.org/jira/browse/MAPREDUCE-298?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]

Allen Wittenauer updated MAPREDUCE-298:
---------------------------------------

    Assignee:     (was: Amareshwari Sriramadasu)

> multi-threaded merge phase
> --------------------------
>
>                 Key: MAPREDUCE-298
>                 URL: https://issues.apache.org/jira/browse/MAPREDUCE-298
>             Project: Hadoop Map/Reduce
>          Issue Type: Improvement
>            Reporter: Christian Kunz
>
> Doing merges in multiple threads (when enough cores are available -- a monitoring issue), the time spent in merging could be cut by a factor equal to the number of threads.



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