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https://issues.apache.org/jira/browse/CASSANDRA-8928?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=17713920#comment-17713920
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Claude Warren commented on CASSANDRA-8928:
------------------------------------------

[~nasnousssi] , Yes.  it is one of the 3 tickets I am working on.  There is 
currently an issue with downgrading from 4.x to 3.x  You said you were able to 
get the downgrade to work on a single node.  Can you tell me what versions you 
downgraded from and to?

> Add downgradesstables
> ---------------------
>
>                 Key: CASSANDRA-8928
>                 URL: https://issues.apache.org/jira/browse/CASSANDRA-8928
>             Project: Cassandra
>          Issue Type: New Feature
>          Components: Legacy/Tools
>            Reporter: Jeremy Hanna
>            Assignee: Claude Warren
>            Priority: Low
>              Labels: remove-reopen
>             Fix For: 5.x
>
>
> As mentioned in other places such as CASSANDRA-8047 and in the wild, 
> sometimes you need to go back.  A downgrade sstables utility would be nice 
> for a lot of reasons and I don't know that supporting going back to the 
> previous major version format would be too much code since we already support 
> reading the previous version.



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