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https://issues.apache.org/jira/browse/CASSANDRA-16082?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=17186653#comment-17186653
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David Capwell commented on CASSANDRA-16082:
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Yeah, worked very well for reviewing CASSANDRA-15909, so looking to produce a
gold set of metrics and add tests to guard against removing of metrics or
changing types (adding is ok).
One thing I did notice, so would need to think about in terms of CI, is that
Stages didn't match in the test clusters, seems one had migration and the other
had read... this is a problem for CI as it would cause flaky tests, so would
need to figure out solution (maybe do a few read/write with schema changes to
stabilize).
> Add a new jmxtool which can dump what JMX objects exist and diff
> ----------------------------------------------------------------
>
> Key: CASSANDRA-16082
> URL: https://issues.apache.org/jira/browse/CASSANDRA-16082
> Project: Cassandra
> Issue Type: Improvement
> Components: Test/dtest/python
> Reporter: David Capwell
> Assignee: David Capwell
> Priority: Normal
>
> In order to help validate metric upgrade we first need to know what is new,
> what was removed, and what was changed. To help with this, we should add a
> new jmxtool which can dump the objects from JMX and diff them.
> Once we have this, we can also add a gold list of expected metrics and add
> tests to validate these metrics don’t change.
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