CalvinConfluent commented on code in PR #19590:
URL: https://github.com/apache/kafka/pull/19590#discussion_r2070927258
##########
metadata/src/main/java/org/apache/kafka/controller/PartitionChangeBuilder.java:
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@@ -334,11 +334,11 @@ private void tryElection(PartitionChangeRecord record) {
targetIsr = List.of(electionResult.node);
targetElr = targetElr.stream().filter(replica -> replica !=
electionResult.node)
.collect(Collectors.toList());
- log.trace("Setting new leader for topicId {}, partition {} to
{} using ELR",
- topicId, partitionId, electionResult.node);
+ log.info("Setting new leader for topicId {}, partition {} to
{} using ELR. Previous partition:{}, change record{}",
Review Comment:
ELR election could be rare, I hope it can be logged for debugging purposes.
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