[jira] [Created] (FLINK-18677) ZooKeeperLeaderRetrievalService does not invalidate leader in case of SUSPENDED connection

[Shang Yuanchun (Jira)]

Till Rohrmann created FLINK-18677:
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             Summary: ZooKeeperLeaderRetrievalService does not invalidate leader in case of SUSPENDED connection
                 Key: FLINK-18677
                 URL: https://issues.apache.org/jira/browse/FLINK-18677
             Project: Flink
          Issue Type: Bug
          Components: Runtime / Coordination
    Affects Versions: 1.11.1, 1.10.1, 1.12.0
            Reporter: Till Rohrmann
             Fix For: 1.12.0


The {{ZooKeeperLeaderRetrievalService}} does not invalidate the leader if the ZooKeeper connection gets SUSPENDED. This means that a {{TaskManager}} won't cancel its running tasks even though it might miss a leader change. I think we should at least make it configurable whether in such a situation the leader listener should be informed about the lost leadership. Otherwise, we might run into the situation where an old and a newly recovered instance of a {{Task}} can run at the same time.



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