log an created JBCLUSTER-315:
--------------------------------
Summary: Jboss 5.x ATTRIBUTE level session replication throws
NullPointerException
Key: JBCLUSTER-315
URL:
https://issues.jboss.org/browse/JBCLUSTER-315
Project: JBoss Clustering
Issue Type: Bug
Components: HA-Server-Cache-JBC
Affects Versions: HA-Server-Cache-JBC 2.0.3.Final
Environment: jboss-eap-5.1
Reporter: log an
Assignee: Paul Ferraro
I have JSF based web application deployed in Jboss 5.1 EAP server. Enabled the
distributable tag for session replication across two jboss nodes with Apache web server
for failover feature and my business requires Attribute level replication but the system
throws NullPointerException.
"Failed to replicate session java.lang.NullPointerException"
jboss-web.xml:
<replication-granularity>ATTRIBUTE</replication-granularity>
web.xml:
<distributable/>
Expected: Session should be replicated without NPE.
Actual: Failed to replicate session 9jYCBgKn2mIIVS2g8EzEzQ__.XXXX
Failed to replicate session 9jYCBgKn2mIIVS2g8EzEzQ__.XXXX
java.lang.NullPointerException
at
org.jboss.web.tomcat.service.session.distributedcache.impl.jbc.AbstractJBossCacheService.getMarshalledValue(AbstractJBossCacheService.java:679)
at
org.jboss.web.tomcat.service.session.distributedcache.impl.jbc.AttributeBasedJBossCacheService.storeSessionAttributes(AttributeBasedJBossCacheService.java:185)
at
org.jboss.web.tomcat.service.session.distributedcache.impl.jbc.AttributeBasedJBossCacheService.storeSessionAttributes(AttributeBasedJBossCacheService.java:40)
at
org.jboss.web.tomcat.service.session.distributedcache.impl.jbc.AbstractJBossCacheService.storeSessionData(AbstractJBossCacheService.java:402)
at
org.jboss.web.tomcat.service.session.ClusteredSession.processSessionReplication(ClusteredSession.java:1192)
at
org.jboss.web.tomcat.service.session.JBossCacheManager.processSessionRepl(JBossCacheManager.java:2221)
at
org.jboss.web.tomcat.service.session.JBossCacheManager.storeSession(JBossCacheManager.java:321)
at
org.jboss.web.tomcat.service.session.InstantSnapshotManager.snapshot(InstantSnapshotManager.java:51)
at
org.jboss.web.tomcat.service.session.ClusteredSessionValve.handleRequest(ClusteredSessionValve.java:147)
at
org.jboss.web.tomcat.service.session.ClusteredSessionValve.invoke(ClusteredSessionValve.java:94)
at
org.jboss.web.tomcat.service.session.JvmRouteValve.invoke(JvmRouteValve.java:88)
at org.jboss.web.tomcat.service.session.LockingValve.invoke(LockingValve.java:62)
at
org.apache.catalina.authenticator.AuthenticatorBase.invoke(AuthenticatorBase.java:433)
at
org.jboss.web.tomcat.security.JaccContextValve.invoke(JaccContextValve.java:95)
at
org.jboss.web.tomcat.security.SecurityContextEstablishmentValve.process(SecurityContextEstablishmentValve.java:126)
at
org.jboss.web.tomcat.security.SecurityContextEstablishmentValve.invoke(SecurityContextEstablishmentValve.java:70)
at org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.java:127)
at org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:102)
at
org.jboss.web.tomcat.service.jca.CachedConnectionValve.invoke(CachedConnectionValve.java:158)
at org.apache.catalina.valves.AccessLogValve.invoke(AccessLogValve.java:567)
at
org.apache.catalina.core.StandardEngineValve.invoke(StandardEngineValve.java:109)
at org.apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.java:330)
at org.apache.coyote.http11.Http11Processor.process(Http11Processor.java:829)
at
org.apache.coyote.http11.Http11Protocol$Http11ConnectionHandler.process(Http11Protocol.java:598)
at org.apache.tomcat.util.net.JIoEndpoint$Worker.run(JIoEndpoint.java:451)
at java.lang.Thread.run(Thread.java:682)
Debugging details:
I have debugged the application and found that one of the attribute value is null.
Here is the line throws NPE:
org.jboss.web.tomcat.service.session.distributedcache.impl.jbc.AbstractJBossCacheService.class
(Line no: 679)
if(MarshalledValueHelper.isTypeExcluded(value.getClass())) {
return value;
}
Please let me know if you need more detail. Also, I am trying to reproduce the issue with
sample application but could not able to do. Kindly, provide some suggestions.
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