Major Observed under load in 4.1.10 (version is missing in Jira metadata...)
2023-12-07 00:26:30,567 ERROR [stderr] (thread-10767,ejb,abc) Exception in thread "thread-10767,ejb,abc" java.util.ConcurrentModificationException 2023-12-07 00:26:30,568 ERROR [stderr] (thread-10767,ejb,abc) at java.util.ArrayList$Itr.checkForComodification(ArrayList.java:911) 2023-12-07 00:26:30,568 ERROR [stderr] (thread-10767,ejb,abc) at java.util.ArrayList$Itr.next(ArrayList.java:861) 2023-12-07 00:26:30,568 ERROR [stderr] (thread-10767,ejb,abc) at org.jgroups.protocols.UNICAST3.addQueuedMessages(UNICAST3.java:781) 2023-12-07 00:26:30,568 ERROR [stderr] (thread-10767,ejb,abc) at org.jgroups.protocols.UNICAST3.up(UNICAST3.java:495) 2023-12-07 00:26:30,568 ERROR [stderr] (thread-10767,ejb,abc) at org.jgroups.protocols.pbcast.NAKACK2.up(NAKACK2.java:689) 2023-12-07 00:26:30,568 ERROR [stderr] (thread-10767,ejb,abc) at org.jgroups.stack.Protocol.up(Protocol.java:338) 2023-12-07 00:26:30,568 ERROR [stderr] (thread-10767,ejb,abc) at org.jgroups.protocols.FD_ALL.up(FD_ALL.java:215) 2023-12-07 00:26:30,568 ERROR [stderr] (thread-10767,ejb,abc) at org.jgroups.stack.Protocol.up(Protocol.java:338) 2023-12-07 00:26:30,568 ERROR [stderr] (thread-10767,ejb,abc) at org.jgroups.stack.Protocol.up(Protocol.java:338) 2023-12-07 00:26:30,568 ERROR [stderr] (thread-10767,ejb,abc) at org.jgroups.stack.Protocol.up(Protocol.java:338) 2023-12-07 00:26:30,568 ERROR [stderr] (thread-10767,ejb,abc) at org.jgroups.protocols.TP.passBatchUp(TP.java:1393) 2023-12-07 00:26:30,568 ERROR [stderr] (thread-10767,ejb,abc) at org.jgroups.util.SubmitToThreadPool$BatchHandler.passBatchUp(SubmitToThreadPool.java:140) 2023-12-07 00:26:30,568 ERROR [stderr] (thread-10767,ejb,abc) at org.jgroups.util.SubmitToThreadPool$BatchHandler.run(SubmitToThreadPool.java:136) 2023-12-07 00:26:30,568 ERROR [stderr] (thread-10767,ejb,abc) at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1149) 2023-12-07 00:26:30,568 ERROR [stderr] (thread-10767,ejb,abc) at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:624) 2023-12-07 00:26:30,568 ERROR [stderr] (thread-10767,ejb,abc) at org.jboss.as.clustering.jgroups.ClassLoaderThreadFactory.lambda$newThread$0(ClassLoaderThreadFactory.java:52) 2023-12-07 00:26:30,568 ERROR [stderr] (thread-10767,ejb,abc) at java.lang.Thread.run(Thread.java:748)
