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https://issues.apache.org/jira/browse/ARTEMIS-2002?focusedWorklogId=262821&page=com.atlassian.jira.plugin.system.issuetabpanels:worklog-tabpanel#worklog-262821
]
ASF GitHub Bot logged work on ARTEMIS-2002:
-------------------------------------------
Author: ASF GitHub Bot
Created on: 19/Jun/19 07:09
Start Date: 19/Jun/19 07:09
Worklog Time Spent: 10m
Work Description: franz1981 commented on pull request #2707: ARTEMIS-2002
Proton transport objects leaked
URL: https://github.com/apache/activemq-artemis/pull/2707#discussion_r295149619
##########
File path:
artemis-protocols/artemis-amqp-protocol/src/main/java/org/apache/activemq/artemis/protocol/amqp/proton/AMQPConnectionContext.java
##########
@@ -183,6 +191,17 @@ public void flush() {
}
public void close(ErrorCondition errorCondition) {
+ synchronized (schedulingLock) {
+ isSchedulingCancelled = true;
+
+ if (scheduledPool != null && scheduledPool instanceof
ThreadPoolExecutor &&
+ scheduledFuture != null && scheduledFuture instanceof Runnable) {
+ if (!((ThreadPoolExecutor) scheduledPool).remove((Runnable)
scheduledFuture)) {
Review comment:
The other issue is perf-wise: if the work queue used on the
`ScheduledExecutorService` is a `LinkedBlockingQueue` it requires a full lock
on the queue to perform the remove, that's bad from a scalability point of
view, given that the `ScheduledExecutorService` is shared between several
components, see
https://github.com/jdk-mirror/openjdk8/blob/master/java/util/concurrent/LinkedBlockingQueue.java#L548
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Issue Time Tracking
-------------------
Worklog Id: (was: 262821)
Time Spent: 1h 50m (was: 1h 40m)
> Proton transport objects leaked if client disconnects abruptly leading to
> OutOfMemoryError: Java heap space
> -----------------------------------------------------------------------------------------------------------
>
> Key: ARTEMIS-2002
> URL: https://issues.apache.org/jira/browse/ARTEMIS-2002
> Project: ActiveMQ Artemis
> Issue Type: Bug
> Components: AMQP
> Affects Versions: 2.6.2
> Reporter: Keith Wall
> Priority: Major
> Attachments: ARTEMIS-2002-OOMEHeap-ProtonObjectsLeaked.png
>
> Time Spent: 1h 50m
> Remaining Estimate: 0h
>
> If an AMQP client with an attached receiving link disconnects abruptly (i.e.
> closes socket without sending the AMQP close performative), {{TransportImpl}}
> and other Proton class instances remain referenced within the heap. If many
> such clients do this, an OutOfMemoryError: Java heap space occurs. This
> occurs even though the underlying socket connection has been closed.
> I have reproduced this issue against both 2.6.2 and master
> (f0c13622ac7e821a81a354b0242ef5235b6e82df).
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