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https://issues.apache.org/jira/browse/CASSANDRA-14335?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16460545#comment-16460545
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Dinesh Joshi commented on CASSANDRA-14335:
------------------------------------------

I have fixed some minor issues with the patch that I spotted. I am not 100% 
certain that this class needs to be thread safe. Thoughts?

> C* nodetool should report the lowest of the highest CQL protocol version 
> supported by all clients connecting to it
> ------------------------------------------------------------------------------------------------------------------
>
>                 Key: CASSANDRA-14335
>                 URL: https://issues.apache.org/jira/browse/CASSANDRA-14335
>             Project: Cassandra
>          Issue Type: Bug
>            Reporter: Dinesh Joshi
>            Assignee: Dinesh Joshi
>            Priority: Major
>
> While upgrading C*, it makes it hard to tell whether any client will be 
> affected if C* is upgraded. C* should internally store the highest protocol 
> version of all clients connecting to it. The lowest supported version will 
> help determining if any client will be adversely affected by the upgrade.



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