Jason918 commented on a change in pull request #3509:
URL: https://github.com/apache/rocketmq/pull/3509#discussion_r752818988
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File path: broker/src/main/java/org/apache/rocketmq/broker/BrokerController.java
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@@ -650,10 +652,13 @@ public void protectBroker() {
public long headSlowTimeMills(BlockingQueue<Runnable> q) {
long slowTimeMills = 0;
- final Runnable peek = q.peek();
- if (peek != null) {
- RequestTask rt = BrokerFastFailure.castRunnable(peek);
- slowTimeMills = rt == null ? 0 : this.messageStore.now() -
rt.getCreateTimestamp();
+ Optional<RequestTask> op = q.stream()
Review comment:
I am a little confusing about this. We are using
`java.util.concurrent.LinkedBlockingQueue` for this `q`, and it should be
thread safe. Can you give a detailed example for this change to work?
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