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https://issues.apache.org/jira/browse/IMPALA-6644?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16597094#comment-16597094
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ASF subversion and git services commented on IMPALA-6644:
---------------------------------------------------------
Commit 8692bfbef657fe95da68e9dcaca9b49de331ccc3 in impala's branch
refs/heads/master from poojanilangekar
[ https://git-wip-us.apache.org/repos/asf?p=impala.git;h=8692bfb ]
IMPALA-6644: Add last heartbeat timestamp into Statestore metric
After this patch, the statestore keeps track of the time since the
last heartbeat for each subscriber. It is exposed as a subscriber
metric on the statestore debug page. It also adds a monitoring
thread that periodically checks the last heartbeat timestamp for
all subscribers and logs the IDs of those that have not been
updated since the last periodic check.
Testing: Added an end to end test to verify the 'sec_since_heartbeat'
metric of a slow subscriber.
Change-Id: I754adccc4569e8219d5d01500cccdfc8782953f7
Reviewed-on: http://gerrit.cloudera.org:8080/11052
Reviewed-by: Impala Public Jenkins <impala-public-jenk...@cloudera.com>
Tested-by: Impala Public Jenkins <impala-public-jenk...@cloudera.com>
> Add last heartbeat timestamp into Statestore metric
> ---------------------------------------------------
>
> Key: IMPALA-6644
> URL: https://issues.apache.org/jira/browse/IMPALA-6644
> Project: IMPALA
> Issue Type: Improvement
> Components: Backend
> Affects Versions: Impala 2.11.0
> Reporter: Mala Chikka Kempanna
> Assignee: Pooja Nilangekar
> Priority: Minor
> Labels: ramp-up, supportability
>
> In the latest and previous versions, statestore in it's default logging
> reports only when it fails to send heartbeat to any host.
> There is no way to confirm if Statestore is indeed continuing to heartbeat in
> all passing conditions, except for turning on debug logs, which becomes too
> noisy. But at the same time its important to know statestore is indeed
> heartbeating.
> The suggestion here is to add a metric in statestore metric page and also
> print the same in log every once in a minute(or any configurable
> time-frequency), reporting the last heartbeat timestamp and last heartbeat
> host(optional).
>
>
>
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