EjbTimerXmlPersister should check if timer.getNextExpiration() is null to avoid NPE ----------------------------------------------------------------------------------- Key: WFLY-3444 URL: https://issues.jboss.org/browse/WFLY-3444 Project: WildFly Issue Type: Bug Components: EJB Reporter: Scott Marlow Assignee: David Lloyd Fix For: 9.0.0.Beta1 Seeing a NPE in org.jboss.as.ejb3.timerservice.persistence.filestore.EjbTimerXmlPersister. that probably needs a null check: {quote} Caused by: java.lang.NullPointerException at org.jboss.as.ejb3.timerservice.persistence.filestore.EjbTimerXmlPersister.writeCalendarTimer(EjbTimerXmlPersister.java:136) at org.jboss.as.ejb3.timerservice.persistence.filestore.EjbTimerXmlPersister.writeContent(EjbTimerXmlPersister.java:89) at org.jboss.as.ejb3.timerservice.persistence.filestore.EjbTimerXmlPersister.writeContent(EjbTimerXmlPersister.java:43) at org.jboss.staxmapper.XMLMapperImpl.doDeparse(XMLMapperImpl.java:88) at org.jboss.staxmapper.XMLMapperImpl.deparseDocument(XMLMapperImpl.java:83) at org.jboss.as.ejb3.timerservice.persistence.filestore.FileTimerPersistence.writeFile(FileTimerPersistence.java:440) {quote}