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https://issues.apache.org/jira/browse/SPARK-5762?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=14317799#comment-14317799
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Apache Spark commented on SPARK-5762:
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User 'kayousterhout' has created a pull request for this issue:
https://github.com/apache/spark/pull/4559
> Shuffle write time is incorrect for sort-based shuffle
> ------------------------------------------------------
>
> Key: SPARK-5762
> URL: https://issues.apache.org/jira/browse/SPARK-5762
> Project: Spark
> Issue Type: Bug
> Components: Spark Core
> Affects Versions: 1.2.1
> Reporter: Kay Ousterhout
> Assignee: Kay Ousterhout
>
> For the sort-based shuffle, when bypassing merge sort, one file is written
> for each partition, and then a final file is written that concatenates all of
> the existing files together. The time to write this final file is not
> included in the shuffle write time.
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