José Armando García Sancio created KAFKA-17147:
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Summary: Improve KRaft add voter handling to tolerate waiting for
delayed operations
Key: KAFKA-17147
URL: https://issues.apache.org/jira/browse/KAFKA-17147
Project: Kafka
Issue Type: Sub-task
Components: kraft
Reporter: José Armando García Sancio
Assignee: José Armando García Sancio
The current implementation for AddVoter returns an REQUEST_TIMED_OUT error
anytime it needs to wait for an invariant to be satisfied. From
[https://cwiki.apache.org/confluence/display/KAFKA/KIP-853%3A+KRaft+Controller+Membership+Changes#KIP853:KRaftControllerMembershipChanges-Handling.3:]
# Wait until there are no uncommitted VotersRecord. Note that the
implementation may just return a {{REQUEST_TIMED_OUT}} error if there are
pending operations.
# Wait for the LeaderChangeMessage control record from the current epoch to
get committed. Note that the implementation may just return a
{{REQUEST_TIMED_OUT}} error if there are pending operations.
# ...
This algorithm could be improved to wait for the invariant to become true
instead of returning a timeout immediately.
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