kevin-wu24 commented on code in PR #18304:
URL: https://github.com/apache/kafka/pull/18304#discussion_r1924296931
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raft/src/main/java/org/apache/kafka/raft/KafkaRaftClient.java:
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@@ -682,13 +690,15 @@ private void transitionToCandidate(long currentTimeMs) {
private void transitionToUnattached(int epoch) {
quorum.transitionToUnattached(epoch);
maybeFireLeaderChange();
+ kafkaRaftMetrics.removeLeaderMetrics();
resetConnections();
}
private void transitionToResigned(List<ReplicaKey> preferredSuccessors) {
fetchPurgatory.completeAllExceptionally(
Errors.NOT_LEADER_OR_FOLLOWER.exception("Not handling request
since this node is resigning"));
quorum.transitionToResigned(preferredSuccessors);
+ kafkaRaftMetrics.removeLeaderMetrics();
Review Comment:
I think the call below in `onBecomeFollower` is not necessary. Leader state
can only transition to Unattached or Resigned
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