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https://issues.apache.org/jira/browse/SPARK-29302?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16947446#comment-16947446
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feiwang edited comment on SPARK-29302 at 10/9/19 8:31 AM:
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Sorry for the late reply, I was on my National Day holiday for the past eight
days.
I just made a simple jobId in the UT above.
In fact, it was created by a jobIdInstant.
And for the tasks of a same job, they are same.
So, I think this is still an issue.
!screenshot-1.png!
!screenshot-2.png!
was (Author: hzfeiwang):
Sorry, I was on my National Day holiday for the past eight days.
I just made a simple jobId in the UT above.
In fact, it was created by a jobIdInstant.
And for the tasks of a same job, they are same.
So, I think this is still an issue.
!screenshot-1.png!
!screenshot-2.png!
> 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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