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From Raman <raman9...@yahoo.com>
Subject Several threads waiting in org.apache.activemq.broker.jmx.ManagementContext.registerMBean/unregisterMBean
Date Mon, 11 Feb 2013 09:47:22 GMT
Hi,
     We are using ActiveMQ 5.7.0 in OSGi container running on JDK 7. We recently migrated
from ActiveMQ 5.5.1 to 5.7.0. There are no issues with 5.5.1. After after migration there
are several (around 80) threads like below waiting for registerMBean or unregisterMBean.
Any reason for this weird behavior?

INFO   | jvm 1    | 2013/02/09 03:10:44 | "ActiveMQ BrokerService[catalyst-bus] Task-1159"
daemon prio=10 tid=0x000000000155c000 nid=0x177 waiting on condition [0x00007f81488c6000]
INFO   | jvm 1    | 2013/02/09 03:10:44 |    java.lang.Thread.State: WAITING (parking)
INFO   | jvm 1    | 2013/02/09 03:10:44 | at sun.misc.Unsafe.park(Native Method)
INFO   | jvm 1    | 2013/02/09 03:10:44 | - parking to wait for  <0x000000070001ddf8>
(a java.util.concurrent.locks.ReentrantReadWriteLock$FairSync)
INFO   | jvm 1    | 2013/02/09 03:10:44 | at java.util.concurrent.locks.LockSupport.park(Unknown
Source)
INFO   | jvm 1    | 2013/02/09 03:10:44 | at java.util.concurrent.locks.AbstractQueuedSynchronizer.parkAndCheckInterrupt(Unknown
Source)
INFO   | jvm 1    | 2013/02/09 03:10:44 | at java.util.concurrent.locks.AbstractQueuedSynchronizer.acquireQueued(Unknown
Source)
INFO   | jvm 1    | 2013/02/09 03:10:44 | at java.util.concurrent.locks.AbstractQueuedSynchronizer.acquire(Unknown
Source)
INFO   | jvm 1    | 2013/02/09 03:10:44 | at java.util.concurrent.locks.ReentrantReadWriteLock$WriteLock.lock(Unknown
Source)
INFO   | jvm 1    | 2013/02/09 03:10:44 | at com.sun.jmx.mbeanserver.Repository.addMBean(Unknown
Source)
INFO   | jvm 1    | 2013/02/09 03:10:44 | at com.sun.jmx.interceptor.DefaultMBeanServerInterceptor.registerWithRepository(Unknown
Source)
INFO   | jvm 1    | 2013/02/09 03:10:44 | at com.sun.jmx.interceptor.DefaultMBeanServerInterceptor.registerDynamicMBean(Unknown
Source)
INFO   | jvm 1    | 2013/02/09 03:10:44 | at com.sun.jmx.interceptor.DefaultMBeanServerInterceptor.registerObject(Unknown
Source)
INFO   | jvm 1    | 2013/02/09 03:10:44 | at com.sun.jmx.interceptor.DefaultMBeanServerInterceptor.registerMBean(Unknown
Source)
INFO   | jvm 1    | 2013/02/09 03:10:44 | at com.sun.jmx.mbeanserver.JmxMBeanServer.registerMBean(Unknown
Source)
INFO   | jvm 1    | 2013/02/09 03:10:44 | at org.apache.activemq.broker.jmx.ManagementContext.registerMBean(ManagementContext.java:366)
INFO   | jvm 1    | 2013/02/09 03:10:44 | at org.apache.activemq.broker.jmx.AnnotatedMBean.registerMBean(AnnotatedMBean.java:72)
INFO   | jvm 1    | 2013/02/09 03:10:44 | at org.apache.activemq.broker.jmx.ManagedTransportConnection.registerMBean(ManagedTransportConnection.java:99)
INFO   | jvm 1    | 2013/02/09 03:10:44 | at org.apache.activemq.broker.jmx.ManagedTransportConnection.<init>(ManagedTransportConnection.java:62)
INFO   | jvm 1    | 2013/02/09 03:10:44 | at org.apache.activemq.broker.jmx.ManagedTransportConnector.createConnection(ManagedTransportConnector.java:54)
INFO   | jvm 1    | 2013/02/09 03:10:44 | at org.apache.activemq.broker.TransportConnector$1$1.run(TransportConnector.java:207)
INFO   | jvm 1    | 2013/02/09 03:10:44 | at java.util.concurrent.ThreadPoolExecutor.runWorker(Unknown
Source)
INFO   | jvm 1    | 2013/02/09 03:10:44 | at java.util.concurrent.ThreadPoolExecutor$Worker.run(Unknown
Source)
INFO   | jvm 1    | 2013/02/09 03:10:44 | at java.lang.Thread.run(Unknown Source)
INFO   | jvm 1    | 2013/02/09 03:10:44 | 

INFO   | jvm 1    | 2013/02/09 03:10:44 | "ActiveMQ Transport: tcp:///10.130.193.160:51908@61616"
daemon prio=10 tid=0x0000000001afe800 nid=0x1c4 waiting on condition [0x00007f81461a0000]
INFO   | jvm 1    | 2013/02/09 03:10:44 |    java.lang.Thread.State: WAITING (parking)
INFO   | jvm 1    | 2013/02/09 03:10:44 | at sun.misc.Unsafe.park(Native Method)
INFO   | jvm 1    | 2013/02/09 03:10:44 | - parking to wait for  <0x000000070001ddf8>
(a java.util.concurrent.locks.ReentrantReadWriteLock$FairSync)
INFO   | jvm 1    | 2013/02/09 03:10:44 | at java.util.concurrent.locks.LockSupport.park(Unknown
Source)
INFO   | jvm 1    | 2013/02/09 03:10:44 | at java.util.concurrent.locks.AbstractQueuedSynchronizer.parkAndCheckInterrupt(Unknown
Source)
INFO   | jvm 1    | 2013/02/09 03:10:44 | at java.util.concurrent.locks.AbstractQueuedSynchronizer.doAcquireShared(Unknown
Source)
INFO   | jvm 1    | 2013/02/09 03:10:44 | at java.util.concurrent.locks.AbstractQueuedSynchronizer.acquireShared(Unknown
Source)
INFO   | jvm 1    | 2013/02/09 03:10:44 | at java.util.concurrent.locks.ReentrantReadWriteLock$ReadLock.lock(Unknown
Source)
INFO   | jvm 1    | 2013/02/09 03:10:44 | at com.sun.jmx.mbeanserver.Repository.contains(Unknown
Source)
INFO   | jvm 1    | 2013/02/09 03:10:44 | at com.sun.jmx.interceptor.DefaultMBeanServerInterceptor.isRegistered(Unknown
Source)
INFO   | jvm 1    | 2013/02/09 03:10:44 | at com.sun.jmx.mbeanserver.JmxMBeanServer.isRegistered(Unknown
Source)
INFO   | jvm 1    | 2013/02/09 03:10:44 | at org.apache.activemq.broker.jmx.ManagementContext.unregisterMBean(ManagementContext.java:393)
INFO   | jvm 1    | 2013/02/09 03:10:44 | at org.apache.activemq.broker.jmx.ManagedTransportConnection.unregisterMBean(ManagedTransportConnection.java:110)
INFO   | jvm 1    | 2013/02/09 03:10:44 | at org.apache.activemq.broker.jmx.ManagedTransportConnection.stopAsync(ManagedTransportConnection.java:71)
INFO   | jvm 1    | 2013/02/09 03:10:44 | - locked <0x00000007da0cf740> (a org.apache.activemq.broker.jmx.ManagedTransportConnection)
INFO   | jvm 1    | 2013/02/09 03:10:44 | at org.apache.activemq.broker.TransportConnection.serviceTransportException(TransportConnection.java:207)
INFO   | jvm 1    | 2013/02/09 03:10:44 | at org.apache.activemq.broker.TransportConnection$1.onException(TransportConnection.java:165)
INFO   | jvm 1    | 2013/02/09 03:10:44 | at org.apache.activemq.transport.TransportFilter.onException(TransportFilter.java:101)
INFO   | jvm 1    | 2013/02/09 03:10:44 | at org.apache.activemq.transport.TransportFilter.onException(TransportFilter.java:101)
INFO   | jvm 1    | 2013/02/09 03:10:44 | at org.apache.activemq.transport.WireFormatNegotiator.onException(WireFormatNegotiator.java:160)
INFO   | jvm 1    | 2013/02/09 03:10:44 | at org.apache.activemq.transport.AbstractInactivityMonitor.onException(AbstractInactivityMonitor.java:295)
INFO   | jvm 1    | 2013/02/09 03:10:44 | at org.apache.activemq.transport.TransportSupport.onException(TransportSupport.java:96)
INFO   | jvm 1    | 2013/02/09 03:10:44 | at org.apache.activemq.transport.tcp.TcpTransport.run(TcpTransport.java:208)
INFO   | jvm 1    | 2013/02/09 03:10:44 | at java.lang.Thread.run(Unknown Source)
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