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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