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Posted to dev@flink.apache.org by "Till Rohrmann (JIRA)" <ji...@apache.org> on 2017/04/20 14:45:04 UTC

[jira] [Created] (FLINK-6342) Start ZooKeeperLeaderElectionService under lock to avoid race condition

Till Rohrmann created FLINK-6342:
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             Summary: Start ZooKeeperLeaderElectionService under lock to avoid race condition
                 Key: FLINK-6342
                 URL: https://issues.apache.org/jira/browse/FLINK-6342
             Project: Flink
          Issue Type: Bug
          Components: Distributed Coordination
    Affects Versions: 1.3.0
            Reporter: Till Rohrmann
            Assignee: Till Rohrmann
             Fix For: 1.3.0


The {{ZooKeeperLeaderElectionService}} should start its components under the {{lock}} in order to avoid race conditions with the {{LeaderLatchListener's}} callback {{isLeader}}. If this is not done, then a leader notification might go unnoticed from the election service because the {{LeaderLatch}} has been started but the internal state of the election service has not been set to running yet.



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