Details
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Enhancement
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Resolution: Not a Bug
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Major
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None
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None
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None
Description
WFLYPRT0057 message may or may not be output.
This message is output if an AsyncTaskRunner runable thread is not null(ManagementRequestContextImpl.java:139).
org/jboss.as/protocol/mgmt/ManagementRequestContextImpl.java
126 private abstract static class AsyncTaskRunner implements Runnable, Cancellable { --- snip --- 135 @Override 136 public Cancellable cancel() { 137 if (cancellable && cancelled.compareAndSet(false, true)) { 138 final Thread thread = this.thread; 139 if(thread != null) { 140 thread.interrupt(); 141 ProtocolLogger.ROOT_LOGGER.cancelledAsyncTask(getClass().getSimpleName(), thread); 142 } 143 } 144 return this; 145 } --- snip --- 152 @Override 153 public void run() { 154 if (cancellable && cancelled.get()) { 155 Thread.currentThread().interrupt(); 156 ProtocolLogger.ROOT_LOGGER.cancelledAsyncTaskBeforeRun(getClass().getSimpleName()); 157 } 158 this.thread = Thread.currentThread(); 159 try { 160 doExecute(); 161 } finally { 162 this.thread = null; 163 } 164 }
The process is working on multi thread, so the WFLYPRT0057 message is output by race condition of null thread handling(ManagementRequestContextImpl.java:162).
This is just a timing, we cannot determine the need for this message.
- Thread dump "management task-2" #139 prio=5 os_prio=0 tid=0x0000562c38351800 nid=0x3626 at breakpoint[0x00007facf3098000] java.lang.Thread.State: RUNNABLE at org.jboss.as.protocol.mgmt.ManagementRequestContextImpl$AsyncTaskRunner.cancel(ManagementRequestContextImpl.java:141) at org.jboss.as.protocol.mgmt.ActiveOperationImpl.asyncCancel(ActiveOperationImpl.java:150) at org.jboss.as.protocol.mgmt.AbstractMessageHandler.cancelAllActiveOperations(AbstractMessageHandler.java:441) at org.jboss.as.protocol.mgmt.AbstractMessageHandler.shutdownNow(AbstractMessageHandler.java:150) at org.jboss.as.remoting.AbstractChannelOpenListenerService$2.handleClose(AbstractChannelOpenListenerService.java:181) at org.jboss.as.remoting.AbstractChannelOpenListenerService$2.handleClose(AbstractChannelOpenListenerService.java:178) at org.jboss.remoting3.spi.SpiUtils.safeHandleClose(SpiUtils.java:50) at org.jboss.remoting3.spi.AbstractHandleableCloseable$CloseHandlerTask.run(AbstractHandleableCloseable.java:520) at org.jboss.remoting3.spi.AbstractHandleableCloseable.runCloseTask(AbstractHandleableCloseable.java:425) at org.jboss.remoting3.spi.AbstractHandleableCloseable.closeComplete(AbstractHandleableCloseable.java:286) at org.jboss.remoting3.remote.RemoteConnectionChannel.closeAction(RemoteConnectionChannel.java:508) at org.jboss.remoting3.spi.AbstractHandleableCloseable.close(AbstractHandleableCloseable.java:150) at org.jboss.as.protocol.mgmt.ManagementChannelReceiver.handleEnd(ManagementChannelReceiver.java:129) at org.jboss.remoting3.remote.RemoteConnectionChannel.lambda$notifyEnd$0(RemoteConnectionChannel.java:273) at org.jboss.remoting3.remote.RemoteConnectionChannel$$Lambda$737/243506564.run(Unknown Source) at org.jboss.remoting3.EndpointImpl$TrackingExecutor.lambda$execute$0(EndpointImpl.java:991) at org.jboss.remoting3.EndpointImpl$TrackingExecutor$$Lambda$720/801134859.run(Unknown Source) at org.jboss.threads.ContextClassLoaderSavingRunnable.run(ContextClassLoaderSavingRunnable.java:35) at org.jboss.threads.EnhancedQueueExecutor.safeRun(EnhancedQueueExecutor.java:1985) at org.jboss.threads.EnhancedQueueExecutor$ThreadBody.doRunTask(EnhancedQueueExecutor.java:1487) at org.jboss.threads.EnhancedQueueExecutor$ThreadBody.run(EnhancedQueueExecutor.java:1378) at java.lang.Thread.run(Thread.java:748) "management-handler-thread - 3" #145 prio=5 os_prio=0 tid=0x0000562c38d5b000 nid=0x3b80 at breakpoint[0x00007facf416f000] java.lang.Thread.State: RUNNABLE at org.jboss.as.protocol.mgmt.ManagementRequestContextImpl$AsyncTaskRunner.run(ManagementRequestContextImpl.java:162) at org.jboss.threads.ContextClassLoaderSavingRunnable.run(ContextClassLoaderSavingRunnable.java:35) at org.jboss.threads.EnhancedQueueExecutor.safeRun(EnhancedQueueExecutor.java:1985) at org.jboss.threads.EnhancedQueueExecutor$ThreadBody.doRunTask(EnhancedQueueExecutor.java:1487) at org.jboss.threads.EnhancedQueueExecutor$ThreadBody.run(EnhancedQueueExecutor.java:1378) at java.lang.Thread.run(Thread.java:748) at org.jboss.threads.JBossThread.run(JBossThread.java:485) - log 09:45:24,686 INFO [org.jboss.as.protocol] (management task-2) WFLYPRT0057: cancelled task by interrupting thread Thread[management-handler-thread - 3,5,management-handler-thread]
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