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https://issues.apache.org/jira/browse/AMQ-3277?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Gary Tully resolved AMQ-3277.
-----------------------------
Resolution: Fixed
Fix Version/s: 5.6.0
Assignee: Gary Tully
maxReconnectAttempts=1 on the failover uri sorts this.
> Deadlock with static:(failover:(...)) configuration
> ---------------------------------------------------
>
> Key: AMQ-3277
> URL: https://issues.apache.org/jira/browse/AMQ-3277
> Project: ActiveMQ
> Issue Type: Bug
> Components: Broker
> Affects Versions: 5.4.2
> Environment: 5.4.2 with back-ported patches for AMQ-3176, AMQ-2736,
> AMQ-3124, AMQ-3125, AMQ-3167.
> Two brokers, each with a single duplex network connection to the other, using
> static:(failover:(first,second)) URI format.
> Reporter: Arthur Naseef
> Assignee: Gary Tully
> Fix For: 5.6.0
>
> Attachments: singleTransport.patch
>
>
> Using failover transports with static transports to create a network of
> brokers with H/A pairs, the failovers lead to deadlocks.
> This appears related to AMQ-3176, but the patch for that problem is included
> in our 5.4.2 build.
> <networkConnector name="nw1_from_nw2"
> uri="static:(failover:(tcp://127.0.0.1:60992,tcp://127.0.0.1:60002))"
> duplex="true" conduitSubscriptions="false"
> dynamicOnly="true"
> networkTTL="7"
> suppressDuplicateQueueSubscriptions="true"
> decreaseNetworkConsumerPriority="true"
> bridgeTempDestinations="true"
> >
> </networkConnector>
> The deadlock occurs after stopping and restarting each broker once. Here's
> the steps:
> - start broker1
> - start broker2
> * test connectivity
> - sthudown broker1
> - restart broker1
> * test connectivity
> - shutdown broker2
> - restart broker2
> * test connectivity
> Here is the deadlock information from the JVM:
> Java stack information for the threads listed above:
> ===================================================
> "StartRemotelBridge: localBroker=vm://peer-nw2#2":
> at
> org.apache.activemq.transport.failover.FailoverTransport.oneway(FailoverTransport.java:477)
> - waiting to lock <0x00002aaac2df83c8> (a java.lang.Object)
> at
> org.apache.activemq.transport.MutexTransport.oneway(MutexTransport.java:40)
> - locked <0x00002aaac2e050f8> (a java.lang.Object)
> at
> org.apache.activemq.transport.ResponseCorrelator.oneway(ResponseCorrelator.java:60)
> at
> org.apache.activemq.network.DemandForwardingBridgeSupport.startRemoteBridge(DemandForwardingBridgeSupport.java:352)
> - locked <0x00002aaac2df7c50> (a
> org.apache.activemq.network.DurableConduitBridge)
> at
> org.apache.activemq.network.DemandForwardingBridgeSupport$4.run(DemandForwardingBridgeSupport.java:277)
> at
> java.util.concurrent.ThreadPoolExecutor$Worker.runTask(ThreadPoolExecutor.java:886)
> at
> java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:908)
> at java.lang.Thread.run(Thread.java:662)
> "ActiveMQ Failover Worker: 169776139":
> at
> org.apache.activemq.network.DemandForwardingBridgeSupport.startLocalBridge(DemandForwardingBridgeSupport.java:290)
> - waiting to lock <0x00002aaac2df7c50> (a
> org.apache.activemq.networFound one Java-level deadlock:
> =============================
> "StartRemotelBridge: localBroker=vm://peer-nw2#2":
> waiting to lock monitor 0x0000000044796938 (object 0x00002aaac2df83c8, a
> java.lang.Object),
> which is held by "ActiveMQ Failover Worker: 169776139"
> "ActiveMQ Failover Worker: 169776139":
> waiting to lock monitor 0x00002aaac470f0b0 (object 0x00002aaac2df7c50, a
> org.apache.activemq.network.DurableConduitBridge),
> which is held by k.DurableConduitBridge)
> at
> org.apache.activemq.network.DemandForwardingBridgeSupport$2.transportResumed(DemandForwardingBridgeSupport.java:220)
> at
> org.apache.activemq.transport.TransportFilter.transportResumed(TransportFilter.java:109)
> at
> org.apache.activemq.transport.TransportFilter.transportResumed(TransportFilter.java:109)
> at
> org.apache.activemq.transport.failover.FailoverTransport.doReconnect(FailoverTransport.java:870)
> - locked <0x00002aaac2df83c8> (a java.lang.Object)
> at
> org.apache.activemq.transport.failover.FailoverTransport$2.iterate(FailoverTransport.java:135)
> - locked <0x00002aaac2df83d8> (a java.lang.Object)
> at
> org.apache.activemq.thread.DedicatedTaskRunner.runTask(DedicatedTaskRunner.java:98)
> at
> org.apache.activemq.thread.DedicatedTaskRunner$1.run(DedicatedTaskRunner.java:36)
> Found 1 deadlock.
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