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List:       activemq-dev
Subject:    [jira] [Created] (AMQ-3793) common use of activemq with failover transport causes deadlock
From:       "Alex Ge (Created) (JIRA)" <jira () apache ! org>
Date:       2012-03-30 10:40:27
Message-ID: 289605009.37347.1333104027764.JavaMail.tomcat () hel ! zones ! apache ! org
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common use of activemq with failover transport causes deadlock
--------------------------------------------------------------

                 Key: AMQ-3793
                 URL: https://issues.apache.org/jira/browse/AMQ-3793
             Project: ActiveMQ
          Issue Type: Bug
          Components: Transport
    Affects Versions: 5.5.1
         Environment: jdk1.6 ;log4j-1.2.16
            Reporter: Alex Ge


I just use jmsAppender as below:

	log.info("testsetstsettset");

while the log4j.properties :

log4j.category.test = jms

log4j.appender.jms=org.apache.log4j.net.JMSAppender
log4j.appender.jms.InitialContextFactoryName=org.apache.activemq.jndi.ActiveMQInitialContextFactory
 log4j.appender.jms.ProviderURL=failover://(tcp://localhost:61616)
log4j.appender.jms.TopicBindingName=topic
log4j.appender.jms.TopicConnectionFactoryBindingName=ConnectionFactory


when I run this program, it will causes a deadlock hanging. 

stack:

"ActiveMQ Task-1" daemon prio=10 tid=0x00002aaab442a000 nid=0x7b13 in Object.wait() \
[0x000000004367e000]  java.lang.Thread.State: RUNNABLE
	at org.apache.log4j.LogManager.getLoggerRepository(LogManager.java:196)
	at org.apache.log4j.LogManager.getLogger(LogManager.java:228)
	at org.slf4j.impl.Log4jLoggerFactory.getLogger(Log4jLoggerFactory.java:73)
	- locked <0x00000000eb35cfc8> (a org.slf4j.impl.Log4jLoggerFactory)
	at org.slf4j.LoggerFactory.getLogger(LoggerFactory.java:249)
	at org.slf4j.LoggerFactory.getLogger(LoggerFactory.java:261)
	at org.apache.activemq.transport.tcp.TcpTransportFactory.<clinit>(TcpTransportFactory.java:48)
  at sun.reflect.NativeConstructorAccessorImpl.newInstance0(Native Method)
	at sun.reflect.NativeConstructorAccessorImpl.newInstance(NativeConstructorAccessorImpl.java:39)
  at sun.reflect.DelegatingConstructorAccessorImpl.newInstance(DelegatingConstructorAccessorImpl.java:27)
  at java.lang.reflect.Constructor.newInstance(Constructor.java:513)
	at java.lang.Class.newInstance0(Class.java:355)
	at java.lang.Class.newInstance(Class.java:308)
	at org.apache.activemq.util.FactoryFinder$StandaloneObjectFactory.create(FactoryFinder.java:61)
  at org.apache.activemq.util.FactoryFinder.newInstance(FactoryFinder.java:146)
	at org.apache.activemq.transport.TransportFactory.findTransportFactory(TransportFactory.java:201)
  at org.apache.activemq.transport.TransportFactory.compositeConnect(TransportFactory.java:92)
  at org.apache.activemq.transport.failover.FailoverTransport.doReconnect(FailoverTransport.java:857)
                
	- locked <0x00000000eb47fff8> (a java.lang.Object)
	at org.apache.activemq.transport.failover.FailoverTransport$2.iterate(FailoverTransport.java:136)
                
	- locked <0x00000000eb480008> (a java.lang.Object)
	at org.apache.activemq.thread.PooledTaskRunner.runTask(PooledTaskRunner.java:127)
	at org.apache.activemq.thread.PooledTaskRunner$1.run(PooledTaskRunner.java:48)
	at java.util.concurrent.ThreadPoolExecutor$Worker.runTask(ThreadPoolExecutor.java:886)
  at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:908)
	at java.lang.Thread.run(Thread.java:662)

----
"main" prio=10 tid=0x000000004d9e5800 nid=0x7aea waiting for monitor entry \
[0x00000000417ca000]  java.lang.Thread.State: BLOCKED (on object monitor)
	at org.apache.activemq.transport.failover.FailoverTransport.oneway(FailoverTransport.java:482)
                
	- waiting to lock <0x00000000eb47fff8> (a java.lang.Object)
	at org.apache.activemq.transport.MutexTransport.oneway(MutexTransport.java:40)
	- locked <0x00000000eb514470> (a java.lang.Object)
	at org.apache.activemq.transport.ResponseCorrelator.asyncRequest(ResponseCorrelator.java:81)
  at org.apache.activemq.transport.ResponseCorrelator.request(ResponseCorrelator.java:86)
  at org.apache.activemq.ActiveMQConnection.syncSendPacket(ActiveMQConnection.java:1284)
  at org.apache.activemq.ActiveMQConnection.ensureConnectionInfoSent(ActiveMQConnection.java:1392)
                
	- locked <0x00000000eb5962a8> (a java.lang.Object)
	at org.apache.activemq.ActiveMQConnection.createSession(ActiveMQConnection.java:309)
	at org.apache.activemq.ActiveMQConnection.createTopicSession(ActiveMQConnection.java:1087)
  at org.apache.log4j.net.JMSAppender.activateOptions(JMSAppender.java:218)
	at org.apache.log4j.config.PropertySetter.activate(PropertySetter.java:307)
	at org.apache.log4j.config.PropertySetter.setProperties(PropertySetter.java:172)
	at org.apache.log4j.config.PropertySetter.setProperties(PropertySetter.java:104)
	at org.apache.log4j.PropertyConfigurator.parseAppender(PropertyConfigurator.java:809)
  at org.apache.log4j.PropertyConfigurator.parseCategory(PropertyConfigurator.java:735)
  at org.apache.log4j.PropertyConfigurator.parseCatsAndRenderers(PropertyConfigurator.java:639)
                
	- locked <0x00000000eb285bf8> (a org.apache.log4j.Logger)
	at org.apache.log4j.PropertyConfigurator.doConfigure(PropertyConfigurator.java:504)
	at org.apache.log4j.PropertyConfigurator.doConfigure(PropertyConfigurator.java:547)
	at org.apache.log4j.helpers.OptionConverter.selectAndConfigure(OptionConverter.java:483)
  at org.apache.log4j.LogManager.<clinit>(LogManager.java:127)
	at org.apache.log4j.Logger.getLogger(Logger.java:104)
	at org.apache.commons.logging.impl.Log4JLogger.getLogger(Log4JLogger.java:229)
	at org.apache.commons.logging.impl.Log4JLogger.<init>(Log4JLogger.java:65)



If I put the logic in JMSAppender.activateOption into another method and invoke this \
method in append method, the problem will no longer appear.  Is there something \
mistake when I use activemq and jmsAppender ?

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