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https://issues.apache.org/jira/browse/CASSANDRA-14931?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16721602#comment-16721602
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Jeff Jirsa commented on CASSANDRA-14931:
----------------------------------------

I'm not Benedict, but I have to imagine the significant value is the ability to 
run (especially) correctness dtests on older versions that we'll need to 
support upgrading to 4.0

I don't see why we'd do 2.2 - 3.0/3.11 need to be validated with respect to 
4.0, but 2.2 does not.

The patch is a lot of lines, but seems like almost all of it is changing 
try/catch to use the wrapper {{MBeanWrapper.instance.registerMBean()}} 

Seems like the actual risk here is pretty small - maybe too much for 2.2, but 
doesnt seem that bad for 3.0/3.11?


> Backport In-JVM dtests to 2.2, 3.0 and 3.11
> -------------------------------------------
>
>                 Key: CASSANDRA-14931
>                 URL: https://issues.apache.org/jira/browse/CASSANDRA-14931
>             Project: Cassandra
>          Issue Type: Improvement
>          Components: Testing
>            Reporter: Benedict
>            Assignee: Benedict
>            Priority: Major
>             Fix For: 2.2.14, 3.0.18, 3.11.4
>
>
> The In-JVM dtests are of significant value, and much of the testing we are 
> exploring with it can easily be utilised on all presently maintained 
> versions.  We should backport the functionality to at least 3.0.x and 3.11.x 
> - and perhaps even consider 2.2.



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