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https://issues.apache.org/jira/browse/FLINK-10564?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16652769#comment-16652769
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chenlf edited comment on FLINK-10564 at 10/17/18 1:12 AM:
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the version of flink we use is 1.2.1.[~Tison] and thanks in advance.we used to
think about updrade the version,but it is too risky in product enviroment.
was (Author: chenlf):
the version of flink we use is 1.2.1.[~Tison] and thanks in advance
> tm costs too much time when communicating with jm
> --------------------------------------------------
>
> Key: FLINK-10564
> URL: https://issues.apache.org/jira/browse/FLINK-10564
> Project: Flink
> Issue Type: Bug
> Components: Core, JobManager, TaskManager
> Environment: configs are following:
> jm
> high-availability zookeeper
> taskmanager.heap.mb 16384
> taskmanager.memory.preallocate false
> taskmanager.numberOfTaskSlots 64
> tm
> slots 128
> free slots 0-128
> cpu core 40
> Physical Memory 95gb
> free Memory 32gb-50gb
> Flink Managed Memory 22gb-35gb
> Reporter: chenlf
> Priority: Major
> Attachments: timeout.log
>
>
> it works fine until the number of tasks is above about 400.
> There are 600+ tasks(each task handles billion data) running in our cluster
> now,and the problem is it costs too much time (even time out)when
> submiting/canceling/querying a task.
> Recouses like memory,cpu are on normal level.
> after debuging,we found this method is the ulprit:
> org.apache.flink.runtime.util.LeaderRetrievalUtils.LeaderGatewayListener.notifyLeaderAddress(String,
> UUID)
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