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https://issues.apache.org/jira/browse/SPARK-29302?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=17086117#comment-17086117
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Mridul Muralidharan commented on SPARK-29302:
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Drive by observations:
* Speculative execution does not run the speculative task concurrently on the
same node running the task (so definitely not same executor).
* Do we have additional details about the tasks which are failing ? Did they
fail before (for unrelated reasons) before failing for path conflict ?
> dynamic partition overwrite with speculation enabled
> ----------------------------------------------------
>
> Key: SPARK-29302
> URL: https://issues.apache.org/jira/browse/SPARK-29302
> Project: Spark
> Issue Type: Bug
> Components: SQL
> Affects Versions: 2.4.4
> Reporter: feiwang
> Priority: Major
> Attachments: screenshot-1.png, screenshot-2.png
>
>
> Now, for a dynamic partition overwrite operation, the filename of a task
> output is determinable.
> So, if speculation is enabled, would a task conflict with its relative
> speculation task?
> Would the two tasks concurrent write a same file?
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