Client Deadlock : Closing session in finally block when connection exception
occurs.
------------------------------------------------------------------------------------
Key: QPID-849
URL: https://issues.apache.org/jira/browse/QPID-849
Project: Qpid
Issue Type: Bug
Reporter: Martin Ritchie
Summary
See the two threads bellow this can be reliably repeated running
org.apache.qpid.test.unit.basic.SelectorTest and changing the selector string
to the invalid 'Cost LIKE 2'. This will cause the connection to be created but
the consumer creation will cause a connection close exception which starts the
session closing. The thrown exception will itself then cause the connection to
be close. The trace below shows the deadlock case where the IOService blocks on
the main close() which is in turn waiting for the CloseOK return that the
IOService thread will deliver.
Stack Traces:
Full thread dump Java HotSpot(TM) Client VM (1.6.0_02-b06 mixed mode):
"AnonymousIoService-2" daemon prio=6 tid=0x0b29f800 nid=0x1584 waiting for
monitor entry [0x0b7ff000..0x0b7ffc94]
java.lang.Thread.State: BLOCKED (on object monitor)
at org.apache.qpid.client.AMQSession.closed(AMQSession.java:653)
- waiting to lock <0x02fc6ef8> (a java.lang.Object)
at
org.apache.qpid.client.AMQConnection.closeAllSessions(AMQConnection.java:1025)
at
org.apache.qpid.client.AMQConnection.exceptionReceived(AMQConnection.java:1300)
at
org.apache.qpid.client.protocol.AMQProtocolHandler.exceptionCaught(AMQProtocolHandler.java:377)
at
org.apache.qpid.client.protocol.AMQProtocolHandler.methodBodyReceived(AMQProtocolHandler.java:505)
at
org.apache.qpid.client.protocol.AMQProtocolSession.methodFrameReceived(AMQProtocolSession.java:537)
at
org.apache.qpid.framing.AMQMethodBodyImpl.handle(AMQMethodBodyImpl.java:93)
at
org.apache.qpid.client.protocol.AMQProtocolHandler.messageReceived(AMQProtocolHandler.java:442)
at
org.apache.mina.common.support.AbstractIoFilterChain$TailFilter.messageReceived(AbstractIoFilterChain.java:703)
at
org.apache.mina.common.support.AbstractIoFilterChain.callNextMessageReceived(AbstractIoFilterChain.java:362)
at
org.apache.mina.common.support.AbstractIoFilterChain.access$1200(AbstractIoFilterChain.java:54)
at
org.apache.mina.common.support.AbstractIoFilterChain$EntryImpl$1.messageReceived(AbstractIoFilterChain.java:800)
at
org.apache.mina.filter.codec.support.SimpleProtocolDecoderOutput.flush(SimpleProtocolDecoderOutput.java:60)
at
org.apache.mina.filter.codec.ProtocolCodecFilter.messageReceived(ProtocolCodecFilter.java:184)
at
org.apache.mina.common.support.AbstractIoFilterChain.callNextMessageReceived(AbstractIoFilterChain.java:362)
at
org.apache.mina.common.support.AbstractIoFilterChain.access$1200(AbstractIoFilterChain.java:54)
at
org.apache.mina.common.support.AbstractIoFilterChain$EntryImpl$1.messageReceived(AbstractIoFilterChain.java:800)
at
org.apache.mina.filter.executor.ExecutorFilter.processEvent(ExecutorFilter.java:243)
at
org.apache.mina.filter.executor.ExecutorFilter$ProcessEventsRunnable.run(ExecutorFilter.java:305)
at
edu.emory.mathcs.backport.java.util.concurrent.ThreadPoolExecutor$Worker.runTask(ThreadPoolExecutor.java:665)
at
edu.emory.mathcs.backport.java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:690)
at java.lang.Thread.run(Thread.java:619)
"main" prio=6 tid=0x00297c00 nid=0x874 waiting on condition
[0x0090f000..0x0090fe54]
java.lang.Thread.State: WAITING (parking)
at sun.misc.Unsafe.park(Native Method)
- parking to wait for <0x02a2d2b0> (a
java.util.concurrent.locks.AbstractQueuedSynchronizer$ConditionObject)
at java.util.concurrent.locks.LockSupport.park(LockSupport.java:158)
at
java.util.concurrent.locks.AbstractQueuedSynchronizer$ConditionObject.await(AbstractQueuedSynchronizer.java:1925)
at
org.apache.qpid.client.protocol.BlockingMethodFrameListener.blockForFrame(BlockingMethodFrameListener.java:196)
at
org.apache.qpid.client.protocol.AMQProtocolHandler.writeCommandFrameAndWaitForReply(AMQProtocolHandler.java:598)
at
org.apache.qpid.client.protocol.AMQProtocolHandler.syncWrite(AMQProtocolHandler.java:625)
at org.apache.qpid.client.AMQSession.close(AMQSession.java:617)
- locked <0x02a72560> (a java.lang.Object)
- locked <0x02fc6ef8> (a java.lang.Object)
at org.apache.qpid.client.AMQSession.close(AMQSession.java:482)
at
org.apache.qpid.test.unit.basic.SelectorTest.test(SelectorTest.java:118)
- locked <0x02eb2ca0> (a org.apache.qpid.test.unit.basic.SelectorTest)
at
org.apache.qpid.test.unit.basic.SelectorTest.main(SelectorTest.java:150)
at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
at
sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:39)
at
sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:25)
at java.lang.reflect.Method.invoke(Method.java:597)
at com.intellij.rt.execution.application.AppMain.main(AppMain.java:90)
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