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https://issues.apache.org/jira/browse/SPARK-17500?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15482303#comment-15482303
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Apache Spark commented on SPARK-17500:
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User 'djvulee' has created a pull request for this issue:
https://github.com/apache/spark/pull/15052
> The DiskBytesSpilled metric in ExternalMerger && ExternalGroupBy is wrong
> -------------------------------------------------------------------------
>
> Key: SPARK-17500
> URL: https://issues.apache.org/jira/browse/SPARK-17500
> Project: Spark
> Issue Type: Bug
> Components: PySpark
> Affects Versions: 1.6.0, 1.6.1, 1.6.2, 2.0.0
> Reporter: DjvuLee
>
> The DiskBytesSpilled metric in ExternalMerger && ExternalGroupBy is increment
> by file size in each spill, but we only need the file size at the last time.
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