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https://issues.apache.org/jira/browse/SPARK-21547?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16103021#comment-16103021
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Sean Owen commented on SPARK-21547:
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It's not clear that this is "too slow", relative to whatever work it's doing.
Why is it unnecessarily slow, or what change are you proposing?
> Spark cleaner cost too many time
> --------------------------------
>
> Key: SPARK-21547
> URL: https://issues.apache.org/jira/browse/SPARK-21547
> Project: Spark
> Issue Type: Bug
> Components: DStreams
> Affects Versions: 2.0.0
> Reporter: DjvuLee
>
> Spark Streaming sometime cost so many time deal with cleaning, and this can
> become worse when enable the dynamic allocation.
> I post the Driver's Log in the following comments, we can find that the
> cleaner costs more than 2min.
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