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Posted to mapreduce-issues@hadoop.apache.org by "Allen Wittenauer (JIRA)" <ji...@apache.org> on 2015/05/06 05:38:13 UTC

[jira] [Updated] (MAPREDUCE-5225) SplitSampler in mapreduce.lib should use a SPLIT_STEP to jump around splits

     [ https://issues.apache.org/jira/browse/MAPREDUCE-5225?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]

Allen Wittenauer updated MAPREDUCE-5225:
----------------------------------------
    Labels: BB2015-05-TBR  (was: )

> SplitSampler in mapreduce.lib should use a SPLIT_STEP to jump around splits
> ---------------------------------------------------------------------------
>
>                 Key: MAPREDUCE-5225
>                 URL: https://issues.apache.org/jira/browse/MAPREDUCE-5225
>             Project: Hadoop Map/Reduce
>          Issue Type: Bug
>            Reporter: Zhijie Shen
>            Assignee: Zhijie Shen
>              Labels: BB2015-05-TBR
>         Attachments: MAPREDUCE-5225.1.patch
>
>
> Now, SplitSampler only samples the first maxSplitsSampled splits, caused by MAPREDUCE-1820. However, jumping around all splits is in general preferable than the first N splits.



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