deadlock in Usage & Topic
-------------------------
Key: AMQ-1475
URL: https://issues.apache.org/activemq/browse/AMQ-1475
Project: ActiveMQ
Issue Type: Bug
Components: Broker
Affects Versions: 5.0.0
Reporter: Alex Burgel
Priority: Critical
Found one Java-level deadlock:
=============================
"ActiveMQ Task":
waiting to lock monitor 0x081615fc (object 0xa3ba9c38, a
java.util.LinkedList),
which is held by "ActiveMQ Transport: tcp:///192.168.1.119:40586"
"ActiveMQ Transport: tcp:///192.168.1.119:40586":
waiting to lock monitor 0x08161598 (object 0xa3badb80, a java.lang.Object),
which is held by "ActiveMQ Task"
Java stack information for the threads listed above:
===================================================
"ActiveMQ Task":
at org.apache.activemq.broker.region.Topic$1.run(Topic.java:94)
- waiting to lock <0xa3ba9c38> (a java.util.LinkedList)
at org.apache.activemq.usage.Usage.fireEvent(Usage.java:255)
- locked <0xa3badb80> (a java.lang.Object)
at org.apache.activemq.usage.Usage.setPercentUsage(Usage.java:232)
- locked <0xa3badb80> (a java.lang.Object)
at
org.apache.activemq.usage.MemoryUsage.decreaseUsage(MemoryUsage.java:149)
at
org.apache.activemq.command.Message.decrementReferenceCount(Message.java:602)
- locked <0xa73f5628> (a
org.apache.activemq.command.ActiveMQObjectMessage)
at
org.apache.activemq.broker.region.TopicSubscription$2.run(TopicSubscription.java:422)
at
org.apache.activemq.broker.TransportConnection.processDispatch(TransportConnection.java:773)
at
org.apache.activemq.broker.TransportConnection.iterate(TransportConnection.java:801)
at
org.apache.activemq.thread.PooledTaskRunner.runTask(PooledTaskRunner.java:118)
at
org.apache.activemq.thread.PooledTaskRunner$1.run(PooledTaskRunner.java:42)
at
java.util.concurrent.ThreadPoolExecutor$Worker.runTask(ThreadPoolExecutor.java:885)
at
java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:907)
at java.lang.Thread.run(Thread.java:619)
"ActiveMQ Transport: tcp:///192.168.1.119:40586":
at
org.apache.activemq.usage.Usage.notifyCallbackWhenNotFull(Usage.java:354)
- waiting to lock <0xa3badb80> (a java.lang.Object)
at org.apache.activemq.broker.region.Topic.send(Topic.java:346)
- locked <0xa3ba9c38> (a java.util.LinkedList)
at
org.apache.activemq.broker.region.AbstractRegion.send(AbstractRegion.java:328)
at
org.apache.activemq.broker.region.RegionBroker.send(RegionBroker.java:402)
at
org.apache.activemq.broker.TransactionBroker.send(TransactionBroker.java:224)
at org.apache.activemq.broker.BrokerFilter.send(BrokerFilter.java:125)
at
org.apache.activemq.broker.CompositeDestinationBroker.send(CompositeDestinationBroker.java:95)
at
org.apache.activemq.broker.MutableBrokerFilter.send(MutableBrokerFilter.java:135)
at
org.apache.activemq.broker.TransportConnection.processMessage(TransportConnection.java:434)
at
org.apache.activemq.command.ActiveMQMessage.visit(ActiveMQMessage.java:623)
at
org.apache.activemq.broker.TransportConnection.service(TransportConnection.java:281)
at
org.apache.activemq.broker.TransportConnection$1.onCommand(TransportConnection.java:178)
at
org.apache.activemq.transport.TransportFilter.onCommand(TransportFilter.java:67)
at
org.apache.activemq.transport.WireFormatNegotiator.onCommand(WireFormatNegotiator.java:134)
at
org.apache.activemq.transport.InactivityMonitor.onCommand(InactivityMonitor.java:126)
- locked <0xa5d116e8> (a
org.apache.activemq.transport.InactivityMonitor$1)
at
org.apache.activemq.transport.TransportSupport.doConsume(TransportSupport.java:83)
at
org.apache.activemq.transport.tcp.TcpTransport.doRun(TcpTransport.java:183)
at
org.apache.activemq.transport.tcp.TcpTransport.run(TcpTransport.java:170)
at java.lang.Thread.run(Thread.java:619)
using snapshot apache-activemq-5.0-20071022.150246-30
java 1.6.0_01 on linux
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