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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