Bikramjeet Vig created IMPALA-8806:
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Summary: 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
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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