CalvinConfluent commented on code in PR #15702:
URL: https://github.com/apache/kafka/pull/15702#discussion_r1569214320
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metadata/src/main/java/org/apache/kafka/controller/ReplicationControlManager.java:
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@@ -2117,6 +2117,20 @@ ListPartitionReassignmentsResponseData
listPartitionReassignments(
return response;
}
+ ControllerResult<Void>
getPartitionElrUpdatesForConfigChanges(Optional<String> topicName) {
+ if (!isElrEnabled()) return
ControllerResult.of(Collections.emptyList(), null);
+
+ List<ApiMessageAndVersion> records = new ArrayList<>();
+ if (topicName.isPresent()) {
+ generateLeaderAndIsrUpdates("handleMinIsrUpdate", NO_LEADER,
NO_LEADER, NO_LEADER, records,
+
brokersToElrs.partitionsWithElr(topicsByName.get(topicName.get())));
+ } else {
+ generateLeaderAndIsrUpdates("handleMinIsrUpdate", NO_LEADER,
NO_LEADER, NO_LEADER, records,
+ brokersToElrs.partitionsWithElr());
+ }
Review Comment:
Yes, we should only update the partition(remove the ELRs) when min isr
decreases. Because if the min isr decreases, the partition can advance the HWM
with fewer ISR members, this can invalidate the ELR as a potential leader.
Sure, I can add them.
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