[
https://issues.apache.org/jira/browse/ARTEMIS-450?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16209321#comment-16209321
]
ASF GitHub Bot commented on ARTEMIS-450:
----------------------------------------
Github user franz1981 commented on a diff in the pull request:
https://github.com/apache/activemq-artemis/pull/1596#discussion_r145411963
--- Diff:
artemis-commons/src/main/java/org/apache/activemq/artemis/core/server/ActiveMQScheduledComponent.java
---
@@ -251,6 +251,9 @@ public synchronized boolean isStarted() {
// this will restart the scheduled component upon changes
private void restartIfNeeded() {
if (isStarted()) {
+ // it has already been through an initial delay,
+ // now we just use the next interval
+ this.initialDelay = period;
--- End diff --
I've built up this test:
```
@Test
public void testVerifyInitialDelayChanged() {
final long initialDelay = 10;
final long period = 100;
final ActiveMQScheduledComponent local = new
ActiveMQScheduledComponent(scheduledExecutorService, executorService,
initialDelay, period, TimeUnit.MILLISECONDS, false) {
@Override
public void run() {
}
};
local.start();
final long newInitialDelay = 1000;
//the parameters are valid?
assert initialDelay != newInitialDelay && newInitialDelay != period;
local.setInitialDelay(newInitialDelay);
local.stop();
Assert.assertEquals("the initial dalay can't change",
newInitialDelay, local.getInitialDelay());
}
```
And it fail: maybe is better to create a `start(long forceInitialDelay)`
method and call it into the restart, wdyt?
> Deadlocked broker over addHead and Rollback with AMQP
> -----------------------------------------------------
>
> Key: ARTEMIS-450
> URL: https://issues.apache.org/jira/browse/ARTEMIS-450
> Project: ActiveMQ Artemis
> Issue Type: Bug
> Components: AMQP, Broker
> Affects Versions: 1.2.0
> Reporter: Gordon Sim
> Assignee: clebert suconic
> Fix For: 2.4.0
>
> Attachments: stack-dump.txt, thread-dump-1.3.txt
>
>
> Not sure exactly how it came about, I noticed it on trying to shutdown the
> broker. The log has:
> {noformat}
> 21:43:17,985 WARN [org.apache.activemq.artemis.core.server] AMQ222174: Queue
> examples, on address=myqueue, is taking too long to flush deliveries. Watch
> out for frozen clients.
> 21:43:18,986 WARN [org.apache.activemq.artemis.core.server] AMQ222174: Queue
> examples, on address=myqueue, is taking too long to flush deliveries. Watch
> out for frozen clients.
> 21:43:19,986 WARN [org.apache.activemq.artemis.core.server] AMQ222174: Queue
> examples, on address=myqueue, is taking too long to flush deliveries. Watch
> out for frozen clients.
> 21:43:20,986 WARN [org.apache.activemq.artemis.core.server] AMQ222174: Queue
> examples, on address=myqueue, is taking too long to flush deliveries. Watch
> out for frozen clients.
> 21:43:28,928 WARN [org.apache.activemq.artemis.core.server] AMQ222174: Queue
> examples, on address=myqueue, is taking too long to flush deliveries. Watch
> out for frozen clients.
> 21:43:45,937 WARN [org.apache.activemq.artemis.core.server] AMQ222174: Queue
> examples, on address=myqueue, is taking too long to flush deliveries. Watch
> out for frozen clients.
> 21:44:18,698 WARN [org.apache.activemq.artemis.core.client] AMQ212037:
> Connection failure has been detected: AMQ119014: Did not receive data from
> /127.0.0.1:51232. It is likely the client has exited or crashed without
> closing its connection, or the network between the server and client has
> failed. You also might have configured connection-ttl and
> client-failure-check-period incorrectly. Please check user manual for more
> information. The connection will now be closed. [code=CONNECTION_TIMEDOUT]
> 21:44:18,698 WARN [org.apache.activemq.artemis.core.server] AMQ222061:
> Client connection failed, clearing up resources for session
> ebd714e5-efad-11e5-83fc-fe540024bf8d
> Exception in thread "Thread-0
> (ActiveMQ-AIO-poller-pool2081191879-2061347276)" java.lang.Error:
> java.io.IOException: Error while submitting IO: Interrupted system call
> at
> java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1148)
> at
> java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:617)
> at java.lang.Thread.run(Thread.java:745)
> Caused by: java.io.IOException: Error while submitting IO: Interrupted system
> call
> at org.apache.activemq.artemis.jlibaio.LibaioContext.blockedPoll(Native
> Method)
> at
> org.apache.activemq.artemis.jlibaio.LibaioContext.poll(LibaioContext.java:360)
> at
> org.apache.activemq.artemis.core.io.aio.AIOSequentialFileFactory$PollerRunnable.run(AIOSequentialFileFactory.java:355)
> at
> java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1142)
> ... 2 more
> {noformat}
> I'll attach a thread dump in which you will see Thread-10 has locked the
> handler lock in AbstractConnectionContext
> (part of the 'proton plug'), and is itself blocked on the lock in
> ServerConsumerImpl, which is held by Thread-21. Thread-21 is waiting
> for a write lock on the deliveryLock in ServerConsumerImpl. However
> Thread-20 already has a read lock on this, and is blocked (while
> holding the read lock) on the same handler lock within the proton plug
> (object 0x00000000f3d2bd90) that Thread-10 has locked.
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