Hibernate concurrency mod exception appears to stop activity event collection ----------------------------------------------------------------------------- Key: RTGOV-12 URL: https://issues.jboss.org/browse/RTGOV-12 Project: RTGov (Run Time Governance) Issue Type: Bug Reporter: Gary Brown Assignee: Gary Brown Fix For: 1.1 When the following exception occurred, it appeared to stop further activity events from being sent to the activity server. {noformat} 02:46:17,493 SEVERE [org.overlord.bam.activity.collector.BatchedActivityUnitLogger] (Timer-5) Failed to send Activity Unit: java.util.ConcurrentModificationException at java.util.ArrayList$Itr.checkForComodification(ArrayList.java:819) [rt.jar:1.7.0_07] at java.util.ArrayList$Itr.next(ArrayList.java:791) [rt.jar:1.7.0_07] at org.hibernate.engine.spi.ActionQueue.executeActions(ActionQueue.java:263) [hibernate-core-4.0.1.Final.jar:4.0.1.Final] at org.hibernate.engine.spi.ActionQueue.executeActions(ActionQueue.java:190) [hibernate-core-4.0.1.Final.jar:4.0.1.Final] at org.hibernate.event.internal.AbstractFlushingEventListener.performExecutions(AbstractFlushingEventListener.java:326) [hibernate-core-4.0.1.Final.jar:4.0.1.Final] at org.hibernate.event.internal.DefaultFlushEventListener.onFlush(DefaultFlushEventListener.java:52) [hibernate-core-4.0.1.Final.jar:4.0.1.Final] at org.hibernate.internal.SessionImpl.flush(SessionImpl.java:1081) [hibernate-core-4.0.1.Final.jar:4.0.1.Final] at org.hibernate.ejb.AbstractEntityManagerImpl.flush(AbstractEntityManagerImpl.java:973) [hibernate-entitymanager-4.0.1.Final.jar:4.0.1.Final] at org.overlord.bam.activity.store.jpa.JPAActivityStore.store(JPAActivityStore.java:197) [activity-store-jpa-1.0.0-SNAPSHOT.jar:1.0.0-SNAPSHOT] at org.overlord.bam.activity.server.impl.ActivityServerImpl.store(ActivityServerImpl.java:91) [activity-server-impl-1.0.0-SNAPSHOT.jar:1.0.0-SNAPSHOT] at org.overlord.bam.activity.collector.activity.server.ActivityServerLogger.sendMessage(ActivityServerLogger.java:92) [collector-activity-server-1.0.0-SNAPSHOT.jar:1.0.0-SNAPSHOT] at org.overlord.bam.activity.collector.BatchedActivityUnitLogger$1.run(BatchedActivityUnitLogger.java:108) [activity-1.0.0-SNAPSHOT.jar:1.0.0-SNAPSHOT] at java.util.TimerThread.mainLoop(Timer.java:555) [rt.jar:1.7.0_07] at java.util.TimerThread.run(Timer.java:505) [rt.jar:1.7.0_07] {noformat}