chia7712 commented on a change in pull request #8657:
URL: https://github.com/apache/kafka/pull/8657#discussion_r484163863
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File path: core/src/main/scala/kafka/server/DelayedOperation.scala
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@@ -231,26 +214,27 @@ final class DelayedOperationPurgatory[T <:
DelayedOperation](purgatoryName: Stri
// At this point the only thread that can attempt this operation is this
current thread
// Hence it is safe to tryComplete() without a lock
- var isCompletedByMe = operation.tryComplete()
- if (isCompletedByMe)
- return true
-
- var watchCreated = false
- for(key <- watchKeys) {
- // If the operation is already completed, stop adding it to the rest of
the watcher list.
- if (operation.isCompleted)
- return false
- watchForOperation(key, operation)
-
- if (!watchCreated) {
- watchCreated = true
- estimatedTotalOperations.incrementAndGet()
+ if (operation.tryComplete()) return true
Review comment:
As the potential deadlock caused by holding lock in
```tryCompleteElseWatch```, I DON"T change the ```tryComplete``` to
```safeTryComplete```. Maybe we can deal with this issue when we meet such
issue.
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