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https://issues.apache.org/jira/browse/CASSANDRA-8928?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=17718819#comment-17718819
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Claude Warren commented on CASSANDRA-8928:
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I also encountered the bigV3 problem and fixed that in a later push. The
problem I am trying to solve is to remove columns that were added to system
tables between 3 and 4. I also think there were some format changes that need
to be undone.
> 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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