Aleksey Yeschenko created CASSANDRA-21496:
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Summary: RemoveNodeStreams and ReconfigureCMS
RESTORE_REPLICA_COUNT streams received by replicas are mis-parsed as OTHER.
Key: CASSANDRA-21496
URL: https://issues.apache.org/jira/browse/CASSANDRA-21496
Project: Apache Cassandra
Issue Type: Bug
Reporter: Aleksey Yeschenko
{{RemoveNodeStreams#startStreaming()}} and {{ReconfigureCMS#streamRanges()}}
build an {{INITIATE_DATA_MOVEMENTS_REQ}} payload
whose {{streamOperation}} field is set to
{{StreamOperation.RESTORE_REPLICA_COUNT.name()}}, i.e. the enum constant name
{{RESTORE_REPLICA_COUNT}}.
{{DataMovementVerbHandler#doVerb()}} on the receiver parses that string with
{{StreamOperation.fromString(message.payload.streamOperation))}},
incorrectly getting {{StreamOperation.OTHER}} (since {{"RESTORE_REPLICA_COUNT"
!= "Restore replica count"}}).
Current impact: this causes MVs to require rebuild unnecessarily on removenode.
Future impact: this affects CEP-45 topology change logic. I have a temporary
workaround there but it's inelegant.
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