[jira] [Resolved] (SPARK-15958) Make initial buffer size for the Sorter configurable

["Sean Owen (JIRA)" <ji...@apache.org>]

     [ https://issues.apache.org/jira/browse/SPARK-15958?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]

Sean Owen resolved SPARK-15958.
-------------------------------
       Resolution: Fixed
    Fix Version/s: 2.1.0

Issue resolved by pull request 13699
[https://github.com/apache/spark/pull/13699]

> Make initial buffer size for the Sorter configurable
> ----------------------------------------------------
>
>                 Key: SPARK-15958
>                 URL: https://issues.apache.org/jira/browse/SPARK-15958
>             Project: Spark
>          Issue Type: Improvement
>    Affects Versions: 2.0.0
>            Reporter: Sital Kedia
>            Priority: Minor
>             Fix For: 2.1.0
>
>
> Currently the initial buffer size in the sorter is hard coded inside the code (https://github.com/apache/spark/blob/master/sql/catalyst/src/main/java/org/apache/spark/sql/execution/UnsafeExternalRowSorter.java#L88) and is too small for large workload. As a result, the sorter spends significant time expanding the buffer size and copying the data. It would be useful to have it configurable. 



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