[jira] [Created] (ZOOKEEPER-4185) Addition of new ZooTrace Mask LEADER_ELECTION_MASK and related log lines for better leader election telemetry

["Julian Chow (Jira)" <ji...@apache.org>]

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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