[jira] [Updated] (CASSANDRA-12716) Remove pre-3.0 compatibility code for 4.0

["Joshua McKenzie (JIRA)" <ji...@apache.org>]

     [ https://issues.apache.org/jira/browse/CASSANDRA-12716?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]

Joshua McKenzie updated CASSANDRA-12716:
----------------------------------------
    Reviewer: Aleksey Yeschenko

> Remove pre-3.0 compatibility code for 4.0
> -----------------------------------------
>
>                 Key: CASSANDRA-12716
>                 URL: https://issues.apache.org/jira/browse/CASSANDRA-12716
>             Project: Cassandra
>          Issue Type: Improvement
>            Reporter: Sylvain Lebresne
>            Assignee: Sylvain Lebresne
>             Fix For: 4.0
>
>
> CASSANDRA-8099 make subsequent changes to internal formats so that we have quite a bit of backward compatibility code a bit over the place. Due to that, but also as a natural evolution, I believe we always had a tacit agreement that 3.0/3.X would be a mandatory step on the upgrade to 4.X, so that we can remove pre-3.0 compatibility (that is, we won't support going from any 2.x release directly to 4.0, you'll have to upgrade to at least some 3.0 release first).
> I think it's time to create the 4.0 branch and remove that pre-3.0 backward compatibility code, which should clean code quite a bit, and that's the goal of this issue.



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