[ https://issues.jboss.org/browse/WFCORE-3569?page=com.atlassian.jira.plugi... ] Richard Opalka commented on WFCORE-3569: ---------------------------------------- The following commit introduced this issue: https://github.com/xnio/xnio/commit/071800e0a85c9da9b88a976ac7ecb85760924dbf Before there was DebugAbortPolicy rejection execution handler associated with task pool. Since now on there's termination task created and associated with task pool. I was able to reproduce this issue with the following stack traces describing the problem: --- java.lang.Exception: at org.jboss.as.server.mgmt.ManagementWorkerService.stopDone(ManagementWorkerService.java:69) at org.xnio.nio.NioXnioWorker.closeResource(NioXnioWorker.java:264) at org.xnio.nio.NioXnioWorker.taskPoolTerminated(NioXnioWorker.java:360) at org.xnio.XnioWorker$1.run(XnioWorker.java:127) at org.jboss.threads.EnhancedQueueExecutor.safeRun(EnhancedQueueExecutor.java:1983) at org.jboss.threads.EnhancedQueueExecutor.completeTermination(EnhancedQueueExecutor.java:1759) at org.jboss.threads.EnhancedQueueExecutor.tryDeallocateThread(EnhancedQueueExecutor.java:1580) at org.jboss.threads.EnhancedQueueExecutor$ThreadBody.run(EnhancedQueueExecutor.java:1393) at java.lang.Thread.run(Thread.java:748) java.lang.Exception: at org.jboss.as.server.mgmt.ManagementWorkerService.stopDone(ManagementWorkerService.java:69) at org.xnio.XnioWorker$1.run(XnioWorker.java:138) at org.jboss.threads.EnhancedQueueExecutor.safeRun(EnhancedQueueExecutor.java:1983) at org.jboss.threads.EnhancedQueueExecutor.completeTermination(EnhancedQueueExecutor.java:1759) at org.jboss.threads.EnhancedQueueExecutor.tryDeallocateThread(EnhancedQueueExecutor.java:1580) at org.jboss.threads.EnhancedQueueExecutor$ThreadBody.run(EnhancedQueueExecutor.java:1393) at java.lang.Thread.run(Thread.java:748) --- Further more it is called twice from the same thread while executing terminationTask. These are the possibilities how to fix this issue: * either return back to DebugAbortPolicy rejection execution handler * or eliminate call on line 137 because it "somehow" duplicates what is happening on line 126 already * or make ManagementWorkerService.stopDone() idempotent Since I don't know XNIO implementation details I can't say which of above proposals is the appropriate one (if any) -- This message was sent by Atlassian JIRA (v7.5.0#75005)