[jira] [Commented] (FLINK-6295) Update suspended ExecutionGraph to lower latency

["ASF GitHub Bot (JIRA)" <ji...@apache.org>]

    [ https://issues.apache.org/jira/browse/FLINK-6295?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15994581#comment-15994581 ] 

ASF GitHub Bot commented on FLINK-6295:
---------------------------------------

Github user zentol commented on the issue:

    https://github.com/apache/flink/pull/3709
  
    merging.


> Update suspended ExecutionGraph to lower latency
> ------------------------------------------------
>
>                 Key: FLINK-6295
>                 URL: https://issues.apache.org/jira/browse/FLINK-6295
>             Project: Flink
>          Issue Type: Bug
>          Components: Webfrontend
>            Reporter: Tao Wang
>            Assignee: Tao Wang
>
> Now in ExecutionGraphHolder, which is used in many handlers, we use a WeakHashMap to cache ExecutionGraph(s), which is only sensitive to garbage collection.
> The latency is too high when JVM do GC rarely, which will make status of jobs or its tasks unmatched with the real ones.
> LoadingCache is a common used cache implementation from guava lib, we can use its time based eviction to lower latency of status update.



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