[jira] [Created] (FLINK-3897) why does jobmanager process has too many ForkJoinTask object

[ZhengBowen (JIRA)]

ZhengBowen created FLINK-3897:
---------------------------------

             Summary: 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



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