Julian Chow created ZOOKEEPER-4185:
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Summary: Addition of new ZooTrace Mask LEADER_ELECTION_MASK and
related log lines for better leader election telemetry
Key: ZOOKEEPER-4185
URL: https://issues.apache.org/jira/browse/ZOOKEEPER-4185
Project: ZooKeeper
Issue Type: New Feature
Components: leaderElection, metric system, server
Affects Versions: 3.5.5
Reporter: Julian Chow
Recently we have been seeing longer leader election abnormalities and we don't
have visibility into "why" leader election took this long and "where exactly"
it took long. As a result we cannot explain the long Zk service outages which
we're seeing. To handle this I created a change that adds:
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