XiaoyiPeng edited a comment on pull request #3509:
URL: https://github.com/apache/rocketmq/pull/3509#issuecomment-995779159
> I think it's not a deadlock problem.
>
> when queue.remove(), will point the next node of the node to be deleted to
itself. **java.util.concurrent.LinkedBlockingQueue#dequeue**
>
> ```
> private E dequeue() {
> // assert takeLock.isHeldByCurrentThread();
> // assert head.item == null;
> Node<E> h = head;
> Node<E> first = h.next;
> h.next = h; // help GC
> head = first;
> E x = first.item;
> first.item = null;
> return x;
> }
> ```
>
> when queue.stream(), will fall into an endless loop.
**LinkedBlockingQueue$LBQSpliterator#tryAdvance()**
Thanks for your review, gentleman, you are right!
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