session.invalidate() throw NullPointerException on invalidated session with replication-granularity set to ATTRIBUTE -------------------------------------------------------------------------------------------------------------------- Key: WFCORE-1287 URL: https://issues.jboss.org/browse/WFCORE-1287 Project: WildFly Core Issue Type: Bug Environment: Wildfly 8.2.1-Final JDK 1.8.0_66-b17 Windows & Linux Reporter: Sammy Chu Attachments: session-invalidate-noreplication.war, session-invalidate-replication-attribute.war, session-invalidate-replication-session.war We suspected that calling session.invalidate() on an already invalidated session with replication-granularity set to "ATTRIBUTE" will throw a NullPointerException, but from the specification it should throw an IllegalStateException instead. Stack trace as below: {noformat} 13:12:35,554 ERROR [io.undertow.request] (default task-32) UT005023: Exception handling request to /<our system url>: java.lang.NullPointerException at org.wildfly.clustering.web.infinispan.session.fine.FineSessionFactory$1.invoke(FineSessionFactory.java:103) at org.wildfly.clustering.web.infinispan.session.fine.FineSessionFactory$1.invoke(FineSessionFactory.java:100) at org.jboss.as.clustering.infinispan.invoker.SimpleCacheInvoker.invoke(SimpleCacheInvoker.java:34) at org.jboss.as.clustering.infinispan.invoker.RetryingCacheInvoker.invoke(RetryingCacheInvoker.java:87) at org.wildfly.clustering.web.infinispan.session.fine.FineSessionFactory.remove(FineSessionFactory.java:109) at org.wildfly.clustering.web.infinispan.session.fine.FineSessionFactory.remove(FineSessionFactory.java:53) at org.wildfly.clustering.web.infinispan.session.InfinispanSession.invalidate(InfinispanSession.java:74) at org.wildfly.clustering.web.infinispan.session.InfinispanSessionManager$SchedulableSession.invalidate(InfinispanSessionManager.java:359) at org.wildfly.clustering.web.undertow.session.DistributableSession.invalidate(DistributableSession.java:140) at io.undertow.servlet.spec.HttpSessionImpl.invalidate(HttpSessionImpl.java:199) [undertow-servlet-1.1.8.Final.jar:1.1.8.Final] ... // our application code, just calling "session.invalidate()" {noformat} We also enclosed the simplified samples to reproduce this issue (session-invalidate-noreplication.war, session-invalidate-replication-attribute.war, session-invalidate-replication-session.war). In general they are the same except the replication-granularity (in jboss-web.xml => replication-granularity) settings. # session-invalidate-noreplication.war and session-invalidate-replication-session.war works correctly as they are throwing IllegalStateException. # session-invalidate-replication-attribute.war is buggy because it throw NullPointerException instead. For more information, please refer to https://developer.jboss.org/message/947295