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https://issues.apache.org/jira/browse/SPARK-23253?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Imran Rashid resolved SPARK-23253.
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Resolution: Fixed
Fix Version/s: 2.4.0
Issue resolved by pull request 20422
[https://github.com/apache/spark/pull/20422]
> Only write shuffle temporary index file when there is not an existing one
> -------------------------------------------------------------------------
>
> Key: SPARK-23253
> URL: https://issues.apache.org/jira/browse/SPARK-23253
> Project: Spark
> Issue Type: Improvement
> Components: Shuffle, Spark Core
> Affects Versions: 2.2.1
> Reporter: Kent Yao
> Assignee: Kent Yao
> Priority: Major
> Fix For: 2.4.0
>
>
> Shuffle Index temporay file is used for atomic creating shuffle index file,
> it is not needed when the index file already exists after another attempts of
> same task had it done.
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