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Posted to issues@spark.apache.org by "L. C. Hsieh (Jira)" <ji...@apache.org> on 2019/09/30 23:29:00 UTC
[jira] [Commented] (SPARK-29302) dynamic partition overwrite with
speculation enabled
[ https://issues.apache.org/jira/browse/SPARK-29302?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16941402#comment-16941402 ]
L. C. Hsieh commented on SPARK-29302:
-------------------------------------
FileCommitProtocol will assign a filename based on task id, isn't? Should not a speculation task have a different task id?
> 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
>
> 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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