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https://issues.apache.org/jira/browse/QPIDJMS-458?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16845027#comment-16845027
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Christian Danner commented on QPIDJMS-458:
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Thanks for the quick reply. While this behaviour may indeed be by design your
answer suggests that the client is waiting for a reply from the server (which
may never arrive) in order to be able to finish cleanup of the producer.
Unfortunately I'm not really able to reproduce the observed situation but I'm
curious why method invocations that require a response from the server do not
support specifying a timeout - while investigating this issue the client thread
remained in the waiting state for more than 15 minutes. It would be desirable
from a client point of view to be able to cleanup resources as quickly as
possible and to perform a reconnect instead.
> Potential race condition in JmsConnection.destroyResource
> ---------------------------------------------------------
>
> Key: QPIDJMS-458
> URL: https://issues.apache.org/jira/browse/QPIDJMS-458
> Project: Qpid JMS
> Issue Type: Bug
> Components: qpid-jms-client
> Affects Versions: 0.42.0
> Environment: OS: Windows 10 64Bit
> Broker: Apache Artemis 2.8.0
> JVM: Java HotSpot(TM) Client VM (25.40-b25, mixed mode)
> Java: version 1.8.0_40, vendor Oracle Corporation
> Reporter: Christian Danner
> Priority: Major
>
> It seems there is a race condition when attempting to close a
> JmsMessageProducer as indicated by the stack trace below. The corresponding
> Thread is stuck waiting for the JmsMessageProducer to be destroyed for a
> JmsConnection.
> This behaviour was observed while testing Apache Artemis with low disk space.
> In the provided trace we attempt to close a broker connection due to a
> JMSException (TransactionRolledBackException caused by a duplicate message
> ID), however the Thread gets stuck indefinitely waiting for the
> JmsMessageProducer to be destroyed.
> We keep track of all sessions for a JmsConnection (one session per Thread)
> and attempt to perform a graceful connection shutdown by closing all
> producers and consumers, followed by each session before finally calling
> close on the connection.
> We use external synchronization to ensure that the connection can only be
> closed by a single Thread (so in this example all other Threads attempting to
> use the broker connection are blocked waiting for the lock from the closing
> Thread to be released).
>
> Stack Trace:
> {{"Replicator_node1-->node2_[0ms]" #25 prio=5 os_prio=0 tid=0x49383c00
> nid=0x3918 in Object.wait() [0x4b1ef000]
> java.lang.Thread.State: WAITING (on object monitor)
> at java.lang.Object.wait(Native Method)
> at java.lang.Object.wait(Object.java:502)
> at
> org.apache.qpid.jms.provider.BalancedProviderFuture.sync(BalancedProviderFuture.java:137)
> - locked <0x04e60300> (a
> org.apache.qpid.jms.provider.BalancedProviderFuture)
> at
> org.apache.qpid.jms.JmsConnection.destroyResource(JmsConnection.java:755)
> at
> org.apache.qpid.jms.JmsConnection.destroyResource(JmsConnection.java:744)
> at
> org.apache.qpid.jms.JmsMessageProducer.doClose(JmsMessageProducer.java:103)
> at
> org.apache.qpid.jms.JmsMessageProducer.close(JmsMessageProducer.java:89)
> at
> acme.broker.client.jms.impl.JMSMessageProducer.closeInternal(JMSMessageProducer.java:48)
> at
> acme.broker.client.jms.impl.JMSMessageProducer.close(JMSMessageProducer.java:43)
> at acme.broker.client.AbstractSession.tryClose(AbstractSession.java:108)
> at acme.broker.client.AbstractSession.close(AbstractSession.java:90)
> at
> acme.broker.client.AbstractThreadedSessionManager.close(AbstractThreadedSessionManager.java:108)
> - locked <0x1d321078> (a java.util.concurrent.ConcurrentHashMap)
> at
> acme.broker.client.AbstractBrokerConnection.closeInternal(AbstractBrokerConnection.java:204)
> at
> acme.broker.client.AbstractBrokerConnection.close(AbstractBrokerConnection.java:84)
> at
> acme.replication.jms.JMSMessageBridge.trySend(JMSMessageBridge.java:109)
> at
> acme.replication.jms.JMSMessageBridge.access$6(JMSMessageBridge.java:99)
> at
> acme.replication.jms.JMSMessageBridge$ReplicatorRunnable.run(JMSMessageBridge.java:62)
> at java.lang.Thread.run(Thread.java:745)
> Locked ownable synchronizers:
> - <0x1cfa76b0> (a
> java.util.concurrent.locks.ReentrantLock$NonfairSync)}}
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