[jboss-jira] [JBoss JIRA] (WFLY-4113) 8.2.0.Final build hangs

[James Perkins (JIRA)]

    [ https://issues.jboss.org/browse/WFLY-4113?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13021991#comment-13021991 ] 

James Perkins commented on WFLY-4113:
-------------------------------------

Thread dump from a local hang
{code}
"Remoting "endpoint" task-10":
	at org.jboss.remoting3.remote.OutboundMessage.cancel(OutboundMessage.java:289)
	- waiting to lock <0x00000007aed930d8> (a org.xnio.streams.BufferPipeOutputStream)
	at org.jboss.remoting3.remote.RemoteConnectionChannel.closeMessages(RemoteConnectionChannel.java:560)
	at org.jboss.remoting3.remote.RemoteConnectionChannel.closeAction(RemoteConnectionChannel.java:542)
	at org.jboss.remoting3.spi.AbstractHandleableCloseable.closeAsync(AbstractHandleableCloseable.java:359)
	at org.jboss.remoting3.remote.RemoteConnectionHandler.closeAllChannels(RemoteConnectionHandler.java:423)
	- locked <0x00000007aec0f708> (a java.util.ArrayDeque)
	at org.jboss.remoting3.remote.RemoteConnectionHandler.sendCloseRequest(

RemoteConnectionHandler.java:232)
	at org.jboss.remoting3.remote.RemoteConnectionHandler.handleConnectionClose(RemoteConnectionHandler.java:112)
	at org.jboss.remoting3.remote.RemoteReadListener$1$1.run(RemoteReadListener.java:56)
	at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1145)
	at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:615)
	at java.lang.Thread.run(Thread.java:745)
"Remoting 3 thread 1":
	at org.jboss.remoting3.remote.RemoteConnection$RemoteWriteListener.send(RemoteConnection.java:295)
	- waiting to lock <0x00000007aec0f708> (a java.util.ArrayDeque)
	at org.jboss.remoting3.remote.RemoteConnection.send(RemoteConnection.java:122)
	at org.jboss.remoting3.remote.OutboundMessage$1.accept(OutboundMessage.java:154)
	at org.xnio.streams.BufferPipeOutputStream.send(BufferPipeOutputStream.java:122)
	at org.xnio.streams.BufferPipeOutputStream.send(BufferPipeOutputStream.java:115)
	at org.xnio.streams.BufferPipeOutputStream.flush(BufferPipeOutputStream.java:139)
	- locked <0x00000007aed930d8> (a org.xnio.streams.BufferPipeOutputStream)
	at org.xnio.streams.BufferPipeOutputStream.close(BufferPipeOutputStream.java:157)
	- locked <0x00000007aed930d8> (a org.xnio.streams.BufferPipeOutputStream)
	at org.jboss.remoting3.remote.OutboundMessage.close(OutboundMessage.java:283)
	- locked <0x00000007aed930d8> (a org.xnio.streams.BufferPipeOutputStream)
	at java.io.FilterOutputStream.close(FilterOutputStream.java:160)
	at org.jboss.as.protocol.mgmt.FlushableDataOutputImpl.close(FlushableDataOutputImpl.java:123)
	at org.jboss.as.controller.remote.ModelControllerClientOperationHandler$CancelAsyncRequestHandler$1.execute(ModelControllerClientOperationHandler.java:296)
	at org.jboss.as.protocol.mgmt.AbstractMessageHandler$2$1.doExecute(AbstractMessageHandler.java:283)
	at org.jboss.as.protocol.mgmt.AbstractMessageHandler$AsyncTaskRunner.run(AbstractMessageHandler.java:504)
	at org.jboss.threads.SimpleDirectExecutor.execute(SimpleDirectExecutor.java:33)
	at org.jboss.threads.QueueExecutor.runTask(QueueExecutor.java:808)
	at org.jboss.threads.QueueExecutor.access$100(QueueExecutor.java:45)
	at org.jboss.threads.QueueExecutor$Worker.run(QueueExecutor.java:828)
	at java.lang.Thread.run(Thread.java:745)
	at org.jboss.threads.JBossThread.run(JBossThread.java:122)
{code}

The deadlock seems to be happening on https://github.com/jamezp/wildfly/blob/8.x/controller/src/test/java/org/jboss/as/controller/support/RemoteChannelPairSetup.java#L128-128 for me.

> 8.2.0.Final build hangs
> -----------------------
>
>                 Key: WFLY-4113
>                 URL: https://issues.jboss.org/browse/WFLY-4113
>             Project: WildFly
>          Issue Type: Feature Request
>          Components: Test Suite
>    Affects Versions: 8.2.0.Final
>            Reporter: Peter Major
>            Assignee: David Lloyd
>         Attachments: jstack.txt
>
>
> When trying to build 8.2.0.Final locally, my build just hangs indefinitely while executing a unit test in the controller module:
> {noformat}
> Running org.jboss.as.controller.ModelControllerClientTestCase
> {noformat}
> Running jstack against the build suggests that there is a deadlock between
> {noformat}
> - waiting to lock <0x00000007bc3f96c8> (a org.xnio.streams.BufferPipeOutputStream)
> at org.jboss.remoting3.remote.RemoteConnectionChannel.closeMessages(RemoteConnectionChannel.java:560)
> at org.jboss.remoting3.remote.RemoteConnectionChannel.closeAction(RemoteConnectionChannel.java:542)
> at org.jboss.remoting3.spi.AbstractHandleableCloseable.closeAsync(AbstractHandleableCloseable.java:359)
> at org.jboss.remoting3.remote.RemoteConnectionHandler.closeAllChannels(RemoteConnectionHandler.java:423)
> - locked <0x00000007b8d8e6f8> (a java.util.ArrayDeque)
> at org.jboss.remoting3.remote.RemoteConnectionHandler.sendCloseRequest(RemoteConnectionHandler.java:232)
> {noformat}
> and
> {noformat}
> - waiting to lock <0x00000007b8d8e6f8> (a java.util.ArrayDeque)
> at org.jboss.remoting3.remote.RemoteConnection.send(RemoteConnection.java:122)
> at org.jboss.remoting3.remote.OutboundMessage$1.accept(OutboundMessage.java:154)
> at org.xnio.streams.BufferPipeOutputStream.send(BufferPipeOutputStream.java:122)
> at org.xnio.streams.BufferPipeOutputStream.send(BufferPipeOutputStream.java:115)
> at org.xnio.streams.BufferPipeOutputStream.flush(BufferPipeOutputStream.java:139)
> - locked <0x00000007bc3f96c8> (a org.xnio.streams.BufferPipeOutputStream)
> at org.xnio.streams.BufferPipeOutputStream.close(BufferPipeOutputStream.java:157)
> - locked <0x00000007bc3f96c8> (a org.xnio.streams.BufferPipeOutputStream)
> at org.jboss.remoting3.remote.OutboundMessage.close(OutboundMessage.java:283)
> - locked <0x00000007bc3f96c8> (a org.xnio.streams.BufferPipeOutputStream)
> at java.io.FilterOutputStream.close(FilterOutputStream.java:160)
> {noformat}
> Preferably locks should be obtained in the same order across the different code paths to prevent deadlocks.



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