michaelandrepearce commented on a change in pull request #2577: ARTEMIS-1604
Artemis deadlock using MQTT Protocol
URL: https://github.com/apache/activemq-artemis/pull/2577#discussion_r264402308
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File path:
artemis-server/src/main/java/org/apache/activemq/artemis/core/server/impl/QueueImpl.java
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@@ -3069,57 +3080,74 @@ private void move(final Transaction originalTX,
* This method delivers the reference on the callers thread - this can give
us better latency in the case there is nothing in the queue
*/
private boolean deliverDirect(final MessageReference ref) {
- synchronized (this) {
- if (!supportsDirectDeliver) {
- return false;
- }
- if (paused || !canDispatch() && redistributor == null) {
- return false;
- }
+ //The order to enter the deliverLock re QueueImpl::this lock is very
important:
Review comment:
rather than this, why not have the original method renamed and existing
method with the lock delegating then to the renamed (but original) method. This
way keeps the lock cleaner.
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