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Posted to issues@spark.apache.org by "koert kuipers (Jira)" <ji...@apache.org> on 2020/03/26 19:17:00 UTC
[jira] [Comment Edited] (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=17067972#comment-17067972 ]
koert kuipers edited comment on SPARK-29302 at 3/26/20, 7:16 PM:
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i believe we are seeing this issue. it shows up in particular when pre-emption is turned on and we are using dynamic partition overwrite. pre-emption kills tasks, they get restarted, and then they fail again because the output directory already exists (so task throws FileAlreadyExistsException). as a result entire job fails.
was (Author: koert):
i believe we are seeing this issue. it shows up in particular when pre-emption is turned on and we are using dynamic partition overwrite. pre-emption kills tasks, they get restarted, and then they fail again because the output directory alreay exsists (so task throws FileAlreadyExistsException). as a result entire job fails.
> 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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