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Posted to issues@flink.apache.org by "ZhengBowen (JIRA)" <ji...@apache.org> on 2016/05/18 03:43:12 UTC
[jira] [Closed] (FLINK-3897) why does jobmanager process has too
many ForkJoinTask object
[ https://issues.apache.org/jira/browse/FLINK-3897?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]
ZhengBowen closed FLINK-3897.
-----------------------------
Resolution: Invalid
> why does jobmanager process has too many ForkJoinTask object
> ------------------------------------------------------------
>
> Key: FLINK-3897
> URL: https://issues.apache.org/jira/browse/FLINK-3897
> Project: Flink
> Issue Type: Improvement
> Reporter: ZhengBowen
>
> jmap -histo 21415 |head -10
> num #instances #bytes class name
> ----------------------------------------------
> 1: 18458230 5059213664 [C
> 2: 29703 1947328680 [Lscala.concurrent.forkjoin.ForkJoinTask;
> 3: 993331 1361835272 [B
> 4: 35228671 1127317472 akka.dispatch.AbstractNodeQueue$Node
> 5: 23123301 924932040 akka.actor.LightArrayRevolverScheduler$TaskHolder
> 6: 15217224 730426752 java.util.HashMap$Entry
> 7: 16863612 539635584 java.lang.String
> -------------------------------------------
> ForkJoinTask object takes up to 2GB of memory space,and the memory used has been growing.
> why?
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