[jira] [Created] (YARN-5685) Non-embedded HA failover is broken

["Daniel Templeton (JIRA)" <ji...@apache.org>]

Daniel Templeton created YARN-5685:
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             Summary: Non-embedded HA failover is broken
                 Key: YARN-5685
                 URL: https://issues.apache.org/jira/browse/YARN-5685
             Project: Hadoop YARN
          Issue Type: Bug
          Components: resourcemanager
    Affects Versions: 3.0.0-alpha1, 2.9.0
            Reporter: Daniel Templeton
            Assignee: Daniel Templeton
            Priority: Critical


YARN-4559 broke RM HA when embedded automatic failover is disabled.  The {{ZKRMStateStore}} will now only start its monitoring thread when automatic failover not enabled (which is patently useless).  I presume the intended change was to have the monitoring thread started when automatic failover is not *embedded*.

If HA is enabled with automatic failover enabled and embedded failover disabled, all RMs all come up in standby state.  To make one of them active, the {{--forcemanual}} flag must be used when manually triggering the state change.  Should the active go down, the standby will not become active and must be manually transitioned with the {{--forcemanual}} flag.



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