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https://issues.apache.org/jira/browse/CASSANDRA-16613?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=17333521#comment-17333521
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Ekaterina Dimitrova commented on CASSANDRA-16613:
-------------------------------------------------

Work in progress 
[here|https://github.com/apache/cassandra/commit/d99f056cb8189c157dd76110542817e0981397dd]

Seems to me only the tests need update. 

I am wondering about a few things though:
 * DriverBurnTest contains perf tests for V4 and V5 (it was actually testing 
current beta which is already V6) so I changed the tests to test V4, V5, V6 but 
then I observed that the perf method is called 
BurnTestUtil#generateQueryMessage for [version 
4|https://github.com/apache/cassandra/commit/d99f056cb8189c157dd76110542817e0981397dd#diff-df33e55e1def1329f9f1c37173fd1af732a6fb636545097f65ce0344079a05f7L81]...
 So I am wondering which versions we want to leave and I guess I have to update 
also BurnTestUtil#generateQueryMessage.
 * I added additional test for version 5 in PagingStateTest, not sure whether 
mixed versions serialize/deserialize should be added too.
 * ClientWarningsTest - I decided to leave it to test latest current version 
instead of 4

[~samt], do you mind to take a look, please, when you have a bit of time? 
Thanks in advance!

> ProtocolVersion.V4 is still used in places in the code
> ------------------------------------------------------
>
>                 Key: CASSANDRA-16613
>                 URL: https://issues.apache.org/jira/browse/CASSANDRA-16613
>             Project: Cassandra
>          Issue Type: Bug
>            Reporter: Ekaterina Dimitrova
>            Assignee: Ekaterina Dimitrova
>            Priority: Normal
>             Fix For: 4.0-rc
>
>
> While working on CASSANDRA-16567, [~adelapena] observed that 
> _ProtocolVersion.V4_ is used in _ViewTest_.
> I decided to do a quick grep and observed a list of places where we still 
> refer to V4 and it seems at least in many of the tests that was left not 
> intentionally.
> This ticket is to verify the usage of _ProtocolVersion.V4_ in the codebase 
> and bump it to V5 or  default version, similar to what was done in 
> CASSANDRA-16567, wherever there is a need. 



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