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From "Blake Eggleston (JIRA)" <j...@apache.org>
Subject [jira] [Created] (CASSANDRA-13944) Throw descriptive errors for mixed mode repair attempts
Date Mon, 09 Oct 2017 22:23:00 GMT
Blake Eggleston created CASSANDRA-13944:
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             Summary: Throw descriptive errors for mixed mode repair attempts
                 Key: CASSANDRA-13944
                 URL: https://issues.apache.org/jira/browse/CASSANDRA-13944
             Project: Cassandra
          Issue Type: Bug
          Components: Repair
            Reporter: Blake Eggleston
            Assignee: Blake Eggleston
            Priority: Minor
             Fix For: 4.0


We often make breaking changes to streaming and repair between major versions, and don't usually
support either in mixed mode clusters. Streaming connections check protocol versions, but
repair message handling doesn't, which means cryptic exceptions show up in the logs when operators
forget to turn off whatever's scheduling repairs on their cluster. Refusing to send or receive
repair messages to/ from incompatible messaging service versions, and throwing a descriptive
exception would make it clearer why repair is not working, as well as prevent any potentially
unexpected behavior.



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