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Posted to commits@cassandra.apache.org by "Blake Eggleston (Jira)" <ji...@apache.org> on 2026/06/02 18:01:00 UTC

[jira] [Created] (CASSANDRA-21419) CEP-58 - Failover Process: Relax MT Sync requirements

Blake Eggleston created CASSANDRA-21419:
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             Summary: CEP-58 - Failover Process: Relax MT Sync requirements
                 Key: CASSANDRA-21419
                 URL: https://issues.apache.org/jira/browse/CASSANDRA-21419
             Project: Apache Cassandra
          Issue Type: Improvement
            Reporter: Blake Eggleston


The MT sync barrier currently used by the failover process is oriented around repair and so assumes/requires that all nodes are up. For failover / primary transfer we don’t actually require every node to participate, just a quorum of quorums, so that we can guarantee that acknowledged writes are visible to reads in the new query configuration.



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