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https://issues.apache.org/jira/browse/CASSANDRA-16082?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=17188152#comment-17188152
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Berenguer Blasi commented on CASSANDRA-16082:
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bq. sorry for asking for a review of a build that fails

No need to apologize! np. Thanks for your comments. I am going crazy with a 
flaky atm but I will try to finish the review of this one later as I had 
focused on {{ToolRunner}} only so far.

> 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
>          Time Spent: 2h 20m
>  Remaining Estimate: 0h
>
> 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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