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Posted to issues@spark.apache.org by "Reynold Xin (JIRA)" <ji...@apache.org> on 2014/07/30 07:16:39 UTC

[jira] [Resolved] (SPARK-2568) RangePartitioner should go through the data only once

     [ https://issues.apache.org/jira/browse/SPARK-2568?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]

Reynold Xin resolved SPARK-2568.
--------------------------------

       Resolution: Fixed
    Fix Version/s: 1.1.0

> RangePartitioner should go through the data only once
> -----------------------------------------------------
>
>                 Key: SPARK-2568
>                 URL: https://issues.apache.org/jira/browse/SPARK-2568
>             Project: Spark
>          Issue Type: Bug
>    Affects Versions: 1.0.0
>            Reporter: Reynold Xin
>            Assignee: Xiangrui Meng
>             Fix For: 1.1.0
>
>
> As of Spark 1.0, RangePartitioner goes through data twice: once to compute the count and once to do sampling. As a result, to do sortByKey, Spark goes through data 3 times (once to count, once to sample, and once to sort).
> RangePartitioner should go through data only once (remove the count step).



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