showuon commented on a change in pull request #11451:
URL: https://github.com/apache/kafka/pull/11451#discussion_r748252411
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File path: core/src/main/scala/kafka/server/DelayedOperation.scala
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@@ -262,7 +262,9 @@ final class DelayedOperationPurgatory[T <:
DelayedOperation](purgatoryName: Stri
0
else
watchers.tryCompleteWatched()
- debug(s"Request key $key unblocked $numCompleted $purgatoryName
operations")
+ if (numCompleted > 0) {
+ debug(s"Request key $key unblocked $numCompleted $purgatoryName
operations")
Review comment:
Before this change, we'll see many useless logs like this:
` DEBUG Request key GroupJoinKey(test.group) unblocked 0 Rebalance
operations`
We should log when `numCompleted > 0`.
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