Gary Tully created AMQ-5620:
-------------------------------
Summary: deadlock on shutdown - kahadb and local tx rollback
Key: AMQ-5620
URL: https://issues.apache.org/jira/browse/AMQ-5620
Project: ActiveMQ
Issue Type: Bug
Affects Versions: 5.11.0
Reporter: Gary Tully
Assignee: Gary Tully
Fix For: 5.12.0
Deadlock found in a potential test case:{code}Found one Java-level deadlock:
=============================
"ActiveMQ BrokerService[localhost] Task-1":
waiting to lock monitor 0x00007feeeb80d108 (object 0x00000007f67294c8, a
org.apache.activemq.store.kahadb.disk.journal.Journal),
which is held by "pool-2-thread-1"
"pool-2-thread-1":
waiting to lock monitor 0x00007feee8a34428 (object 0x00000007f67091f8, a
java.lang.Object),
which is held by "ActiveMQ BrokerService[localhost] Task-1"
Java stack information for the threads listed above:
===================================================
"ActiveMQ BrokerService[localhost] Task-1":
at
org.apache.activemq.store.kahadb.disk.journal.Journal.getCurrentWriteFile(Journal.java:420)
- waiting to lock <0x00000007f67294c8> (a
org.apache.activemq.store.kahadb.disk.journal.Journal)
at
org.apache.activemq.store.kahadb.disk.journal.DataFileAppender.enqueue(DataFileAppender.java:209)
- locked <0x00000007f67091f8> (a java.lang.Object)
at
org.apache.activemq.store.kahadb.disk.journal.DataFileAppender.storeItem(DataFileAppender.java:148)
at
org.apache.activemq.store.kahadb.disk.journal.Journal.write(Journal.java:647)
at
org.apache.activemq.store.kahadb.MessageDatabase.store(MessageDatabase.java:977)
at
org.apache.activemq.store.kahadb.MessageDatabase.store(MessageDatabase.java:959)
at
org.apache.activemq.store.kahadb.KahaDBTransactionStore.rollback(KahaDBTransactionStore.java:313)
at
org.apache.activemq.transaction.LocalTransaction.rollback(LocalTransaction.java:94)
- locked <0x00000007f6729698> (a
org.apache.activemq.store.kahadb.KahaDBTransactionStore)
at
org.apache.activemq.broker.TransactionBroker.removeConnection(TransactionBroker.java:323)
at
org.apache.activemq.broker.MutableBrokerFilter.removeConnection(MutableBrokerFilter.java:137)
at
org.apache.activemq.broker.TransportConnection.processRemoveConnection(TransportConnection.java:862)
- locked <0x00000007f6729810> (a
org.apache.activemq.broker.jmx.ManagedTransportConnection)
at
org.apache.activemq.broker.TransportConnection.doStop(TransportConnection.java:1187)
at
org.apache.activemq.broker.TransportConnection$4.run(TransportConnection.java:1117)
at
java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1145)
at
java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:615)
at java.lang.Thread.run(Thread.java:745)
"pool-2-thread-1":
at
org.apache.activemq.store.kahadb.disk.journal.DataFileAppender.close(DataFileAppender.java:257)
- waiting to lock <0x00000007f67091f8> (a java.lang.Object)
at
org.apache.activemq.store.kahadb.disk.journal.Journal.close(Journal.java:474)
- locked <0x00000007f67294c8> (a
org.apache.activemq.store.kahadb.disk.journal.Journal)
at
org.apache.activemq.store.kahadb.MessageDatabase.close(MessageDatabase.java:438)
at
org.apache.activemq.store.kahadb.MessageDatabase.unload(MessageDatabase.java:466)
at
org.apache.activemq.store.kahadb.MessageDatabase.doStop(MessageDatabase.java:268)
at
org.apache.activemq.store.kahadb.KahaDBStore.doStop(KahaDBStore.java:288)
at org.apache.activemq.util.ServiceSupport.stop(ServiceSupport.java:71)
at org.apache.activemq.util.ServiceStopper.stop(ServiceStopper.java:41)
at org.apache.activemq.broker.BrokerService.stop(BrokerService.java:792)
at
org.apache.activemq.store.kahadb.PriorityMessageRestartBrokerTest.stopRestartBroker(PriorityMessageRestartBrokerTest.java:525)
at
org.apache.activemq.store.kahadb.PriorityMessageRestartBrokerTest.access$200(PriorityMessageRestartBrokerTest.java:70)
at
org.apache.activemq.store.kahadb.PriorityMessageRestartBrokerTest$BrokerRestartTask.run(PriorityMessageRestartBrokerTest.java:513)
at
java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:471)
at java.util.concurrent.FutureTask.runAndReset(FutureTask.java:304)
at
java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.access$301(ScheduledThreadPoolExecutor.java:178)
at
java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.run(ScheduledThreadPoolExecutor.java:293)
at
java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1145)
at
java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:615)
at java.lang.Thread.run(Thread.java:745)
Found 1 deadlock.{code}
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