[jira] [Created] (FLINK-20695) Zookeeper node under leader and leaderlatch is not deleted after job finished

[Shang Yuanchun (Jira)]

lidesheng created FLINK-20695:
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             Summary: Zookeeper node under leader and leaderlatch is not deleted after job finished
                 Key: FLINK-20695
                 URL: https://issues.apache.org/jira/browse/FLINK-20695
             Project: Flink
          Issue Type: Improvement
          Components: Runtime / Task
            Reporter: lidesheng


I used flink 1.11 in standalone cluster mode for batch job. The enviornment was configed as zookeeper HA mode.

After job was commited, flink runtime created nodes under /flink/default/leader and /flink/default/leaderlatch with job id.  Though jobs were finished, these nodes  were remaining in zookeeper path forever. 

After a period of running, more and more jobs had been executed and there were a greate number of nodes under /flink/default/leader and slowed down the performance of zookeeper. Why not delete the nodes after job finished? Flink runtime could get job status by listeners and delete the leader nodes for job immidiately.



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