Alex Petrov created CASSANDRA-15352:
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Summary: Replica failure propagation to coordinator and client
Key: CASSANDRA-15352
URL: https://issues.apache.org/jira/browse/CASSANDRA-15352
Project: Cassandra
Issue Type: New Feature
Components: Messaging/Internode
Reporter: Alex Petrov
We should add early reporting of replica-side errors, since currently we just
time-out requests. On normal read-write path this is not that important, but
this is a protocol change we will need to improve cheap quorums for transient
replication. This might have potential positive impact for regular read-write
path, since we’ll be aborting queries early instead of timing them out. Can be
useful for failing / going away nodes (which is also one of the changes we’re
planning to implement).
We do have means for propagating error both in client protocol through
<reasonmap> and in internode through FAILURE_RSP, which is true and we do not
have to extend the protocol to implement this change, but this is still a
change in protocol behavior, since we’ll be sending a message where we would
usually silently timeout.
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