[jira] [Created] (IMPALA-7857) Log more information about statestore failure detector

["Tim Armstrong (JIRA)" <ji...@apache.org>]

Tim Armstrong created IMPALA-7857:
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             Summary: Log more information about statestore failure detector
                 Key: IMPALA-7857
                 URL: https://issues.apache.org/jira/browse/IMPALA-7857
             Project: IMPALA
          Issue Type: Bug
          Components: Distributed Exec
            Reporter: Tim Armstrong
            Assignee: Tim Armstrong


For debugging heartbeat failures (or non-failures) it would be useful to log enough information to infer the current state of the failure detector from logs. Specifically:
* Upon a failure, we should log the number of consecutive failures according to the failure detector. And also maybe how many failures remain until it's considered to be failed.
* We should log when the failure count is reset to 0 by a successful heartbeat.

Currently if there are occasional failures it's hard to tell with certainty whether it was reset correctly.



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