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Posted to dev@flink.apache.org by "lzh9 (JIRA)" <ji...@apache.org> on 2018/08/25 03:01:00 UTC

[jira] [Created] (FLINK-10214) why is job applying as many TMs as default parallelism when starting, each parallelism is 1

lzh9 created FLINK-10214:
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             Summary: why is job applying as many TMs as default parallelism when starting, each parallelism is 1
                 Key: FLINK-10214
                 URL: https://issues.apache.org/jira/browse/FLINK-10214
             Project: Flink
          Issue Type: Task
          Components: Cluster Management, TaskManager, YARN
    Affects Versions: 1.5.0
            Reporter: lzh9


If I set TM number=6, slot num each TM=8, memory each TM=4G, the job will apply 48 TMs, and use only one slot each, total memory usage is 192G. A few minutes later, it will release 40TMs, everything will be normal. 

Is there any reason about it? 



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