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https://issues.apache.org/jira/browse/IMPALA-8806?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16895608#comment-16895608
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Alex Rodoni commented on IMPALA-8806:
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[~bikramjeet.vig] User-facing doc impact? For 3.3?
> Add metrics to improve observability of executor groups
> -------------------------------------------------------
>
> Key: IMPALA-8806
> URL: https://issues.apache.org/jira/browse/IMPALA-8806
> Project: IMPALA
> Issue Type: Improvement
> Affects Versions: Impala 3.3.0
> Reporter: Bikramjeet Vig
> Assignee: Bikramjeet Vig
> Priority: Major
> Labels: observability
>
> As a follow on IMPALA-8484, it makes sense to add some metrics to provide
> better observability into the state of executor groups.
> Some metrics can be:
> - number of executor groups with any impalas in them
> - number of healthy executor groups
> - number of backends. Currently we have a python helper that calculates this
> - get_num_known_live_backends, but it really should be a metric (we could
> replace the test code with a metric if we did this).
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