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anis ben brahim commented on CASSANDRA-8928: -------------------------------------------- >From our tests we have downgraded from the 4.0.9 to the 3.11.14. In our first >quick tests we have noticed that the keyword bigV3 is problematic when >cassandra 3 start. By renaming this keyword by "big" in sstable filenames, >Cassandra successfully start. For this quick test as mentioned in the tickets, >system keysapces are not downgradable for now as it contains new columns and >new tables. As DDL are not allowed during the migration, restoring system >keyspaces from backups make this downgrade tool working. We are currently try >to figure out all the points from system keyspaces that make the downgrade >process failed and try to find some workarounds. > 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. -- This message was sent by Atlassian Jira (v8.20.10#820010) --------------------------------------------------------------------- To unsubscribe, e-mail: commits-unsubscr...@cassandra.apache.org For additional commands, e-mail: commits-h...@cassandra.apache.org