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https://issues.apache.org/jira/browse/AMQ-6688?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
]
Gary Tully resolved AMQ-6688.
-----------------------------
Resolution: Fixed
> org.apache.activemq.broker.region.Queue.doMessageSend() future not completing
> -----------------------------------------------------------------------------
>
> Key: AMQ-6688
> URL: https://issues.apache.org/jira/browse/AMQ-6688
> Project: ActiveMQ
> Issue Type: Bug
> Components: Broker, KahaDB, Message Store
> Affects Versions: 5.14.0
> Reporter: Gary Tully
> Assignee: Gary Tully
> Fix For: 5.15.0
>
>
> A case of a send thread blocked on the send future.get()...
> {code}
> ActiveMQ VMTransport: vm://XXXXXX" #375 daemon prio=5 os_prio=0
> tid=0x00007f9bdc2f0800 nid=0x4e2 waiting on condition [0x00007f9bc7e9e000]
> java.lang.Thread.State: WAITING (parking)
> at sun.misc.Unsafe.park(Native Method)
> - parking to wait for <0x00000000d8e65ef8> (a
> org.apache.activemq.store.kahadb.KahaDBStore$StoreQueueTask$InnerFutureTask)
> at java.util.concurrent.locks.LockSupport.park(LockSupport.java:175)
> at java.util.concurrent.FutureTask.awaitDone(FutureTask.java:429)
> at java.util.concurrent.FutureTask.get(FutureTask.java:191)
> at org.apache.activemq.broker.region.Queue.doMessageSend(Queue.java:853)
> at org.apache.activemq.broker.region.Queue.send(Queue.java:727)
> at
> org.apache.activemq.broker.region.AbstractRegion.send(AbstractRegion.java:419)
> at
> org.apache.activemq.broker.region.RegionBroker.send(RegionBroker.java:468)
> at
> org.apache.activemq.broker.jmx.ManagedRegionBroker.send(ManagedRegionBroker.java:296)
> at org.apache.activemq.broker.BrokerFilter.send(BrokerFilter.java:152)
> at
> org.apache.activemq.broker.CompositeDestinationBroker.send(CompositeDestinationBroker.java:96)
> at
> org.apache.activemq.broker.TransactionBroker.send(TransactionBroker.java:293)
> at
> org.apache.activemq.broker.MutableBrokerFilter.send(MutableBrokerFilter.java:157)
> at
> org.apache.activemq.broker.util.LoggingBrokerPlugin.send(LoggingBrokerPlugin.java:275)
> at org.apache.activemq.broker.BrokerFilter.send(BrokerFilter.java:152)
> at
> org.apache.activemq.broker.MutableBrokerFilter.send(MutableBrokerFilter.java:157)
> at
> org.apache.activemq.broker.TransportConnection.processMessage(TransportConnection.java:571)
> at
> org.apache.activemq.command.ActiveMQMessage.visit(ActiveMQMessage.java:768)
> at
> org.apache.activemq.broker.TransportConnection.service(TransportConnection.java:326)
> at
> org.apache.activemq.broker.TransportConnection$1.onCommand(TransportConnection.java:190)
> at
> org.apache.activemq.transport.ResponseCorrelator.onCommand(ResponseCorrelator.java:116)
> at
> org.apache.activemq.transport.MutexTransport.onCommand(MutexTransport.java:50)
> at
> org.apache.activemq.transport.vm.VMTransport.iterate(VMTransport.java:271)
> at
> org.apache.activemq.thread.PooledTaskRunner.runTask(PooledTaskRunner.java:133)
> at
> org.apache.activemq.thread.PooledTaskRunner$1.run(PooledTaskRunner.java:48)
> at
> java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1142)
> at
> java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:617)
> at java.lang.Thread.run(Thread.java:745)
> {code}
> It seems that the
> org.apache.activemq.store.kahadb.KahaDBStore.StoreQueueTask#run() which
> should invoke complete on the future has been invoked but complete is not
> triggered. This can happen in the event that the add results in a Throwable!
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