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https://issues.apache.org/jira/browse/IMPALA-7857?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16692401#comment-16692401
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ASF subversion and git services commented on IMPALA-7857:
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Commit 93a0ce857f181f2fe4248252428fc2adfdf1bdb7 in impala's branch
refs/heads/master from [~tarmstr...@cloudera.com]
[ https://git-wip-us.apache.org/repos/asf?p=impala.git;h=93a0ce8 ]
IMPALA-7857: log more information about statestore failure detection
This adds a couple of log messages for state transitions in the
statestore's failure detector.
Testing:
Ran test_statestore.py and checked for presence of new log messages.
Added a new tests to test_statestore that exercises handling of
intermittent heartbeat failures (required to produce one of the new log
messages).
Change-Id: Ie6ff85bee117000e4434dcffd3d1680a79905f14
Reviewed-on: http://gerrit.cloudera.org:8080/11937
Reviewed-by: Impala Public Jenkins <impala-public-jenk...@cloudera.com>
Tested-by: Impala Public Jenkins <impala-public-jenk...@cloudera.com>
> 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
> Priority: Major
> Labels: statestore, supportability
>
> 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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