Good Day,
After reading through the ThreadDump (I am hoping I read the dump correctly), I
saw the following regarding (PurgeInactiveDestination)
SchedulerTimerTask calls BrokerService that calls purgeInactiveDestinations,
but a lock is already acquired by addConsumer method (causing indefinite
block). Can this be what is causing the broker to periodically hang for over
twenty minutes. Why would the purge take so long (for 10 minutes all the
SchedulerTimerTask threads were blocked
protected void purgeInactiveDestinations() {
inactiveDestinationsPurgeLock.writeLock().lock();
public Subscription addConsumer(ConnectionContext context, ConsumerInfo
info) throws Exception {
ActiveMQDestination destination = info.getDestination();
if (destinationInterceptor != null) {
destinationInterceptor.create(this, context, destination);
}
inactiveDestinationsPurgeLock.readLock().lock();
BLOCKED THREAD
"ActiveMQ Broker[localhost] Scheduler" daemon prio=10 tid=0x00002b3c780d6800
nid=0x1403 waiting for monitor entry [0x00002b3c7cce8000]
java.lang.Thread.State: BLOCKED (on object monitor) at
org.apache.activemq.broker.region.RegionBroker.purgeInactiveDestinations(RegionBroker.java:920)
- waiting to lock <0x00000007603866f8> (a
org.apache.activemq.broker.region.RegionBroker$1) at
org.apache.activemq.broker.region.RegionBroker$1.run(RegionBroker.java:110)
at
org.apache.activemq.thread.SchedulerTimerTask.run(SchedulerTimerTask.java:33)
at java.util.TimerThread.mainLoop(Timer.java:512) at
java.util.TimerThread.run(Timer.java:462)
THE CULPRIT
at
org.apache.activemq.broker.region.RegionBroker.addConsumer(RegionBroker.java:447)
- locked <0x00000007603866f8> (a
org.apache.activemq.broker.region.RegionBroker$1) at
org.apache.activemq.broker.jmx.ManagedRegionBroker.addConsumer(ManagedRegionBroker.java:240)
To read FirstRand Bank's Disclaimer for this email click on the following
address or copy into your Internet browser:
https://www.fnb.co.za/disclaimer.html
If you are unable to access the Disclaimer, send a blank e-mail to
firstrandbankdisclai...@fnb.co.za and we will send you a copy of the Disclaimer.
