[jira] [Created] (CASSANDRA-7530) Repair should be allowed in mixed version clusters

["Jeremiah Jordan (JIRA)" <ji...@apache.org>]

Jeremiah Jordan created CASSANDRA-7530:
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             Summary: Repair should be allowed in mixed version clusters
                 Key: CASSANDRA-7530
                 URL: https://issues.apache.org/jira/browse/CASSANDRA-7530
             Project: Cassandra
          Issue Type: Improvement
          Components: Core
            Reporter: Jeremiah Jordan


As we try to improve the ops experience for large clusters (or cautious people), we need to make it so repair works across major version upgrades.

Currently you have to be able to upgrade all of your nodes and then run a full repair, within the gc_grace window.

The recent ability to stream old sstables makes this a little better, as you don't have to also run upgradesstables first.

It would be really good if we could let people pause their upgrade of 1000 nodes to run some repairs.  Or to upgrade one DC and test the new major version for a while (while still running repairs).



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