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https://issues.apache.org/jira/browse/CASSANDRA-14931?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16721443#comment-16721443
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Benedict commented on CASSANDRA-14931:
--------------------------------------

FYI, I have added a 2.2 backport into the mix.  This was actually very smooth, 
but to keep the code as simple as possible I have modified the 2.2 unit tests 
to require JDK8.  I think this is pretty reasonable, since we typically build 
with JDK8 and a 1.7 target for the jar.

There's definitely a problem with 3.0, however.  2.2 succeeds with an infinite 
loop (at least until resource exhaustion, until we get 14922), but 
{{coordinatorWrite}} kills 3.0 rapidly with the read failing to return the 
recently written values.  Presumably this is an issue with the way we execute 
the queries.

> 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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