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Posted to issues@spark.apache.org by "Apache Spark (JIRA)" <ji...@apache.org> on 2018/10/31 19:09:00 UTC
[jira] [Assigned] (SPARK-25901) Barrier mode spawns a bunch of
threads that get collected on gc
[ https://issues.apache.org/jira/browse/SPARK-25901?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]
Apache Spark reassigned SPARK-25901:
------------------------------------
Assignee: Apache Spark
> Barrier mode spawns a bunch of threads that get collected on gc
> ---------------------------------------------------------------
>
> Key: SPARK-25901
> URL: https://issues.apache.org/jira/browse/SPARK-25901
> Project: Spark
> Issue Type: Bug
> Components: Spark Core
> Affects Versions: 2.4.0
> Reporter: yogesh garg
> Assignee: Apache Spark
> Priority: Major
> Attachments: Screen Shot 2018-10-31 at 11.57.25 AM.png, Screen Shot 2018-10-31 at 11.57.42 AM.png
>
>
> After a barrier job is terminated (successfully or interrupted), the accompanying thread created with `Timer` in `BarrierTaskContext` shows in a waiting state until gc is called. We should probably have just one thread to schedule all such tasks, since they just log every 60 seconds.
> Here's a screen shot of the threads growing with more tasks:
> !Screen Shot 2018-10-31 at 11.57.25 AM.png!
> Here's a screen shot of constant number of threads with more tasks:
> !Screen Shot 2018-10-31 at 11.57.42 AM.png!
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