Weird random "session was null" exceptions

[igx89]

I've recently started randomly seeing the following exception:

java.lang.IllegalStateException: Could not start transaction
 at org.jboss.seam.jsf.SeamPhaseListener.begin(SeamPhaseListener.java:571)
 at org.jboss.seam.jsf.SeamPhaseListener.handleTransactionsBeforePhase(SeamPhaseListener.java:307)
 at org.jboss.seam.jsf.SeamPhaseListener.beforeServletPhase(SeamPhaseListener.java:142)
 at org.jboss.seam.jsf.SeamPhaseListener.beforePhase(SeamPhaseListener.java:116)
 at org.ajax4jsf.resource.ResourceLifecycle.send(ResourceLifecycle.java:165)
 at org.ajax4jsf.resource.InternetResourceService.load(InternetResourceService.java:336)
 at org.ajax4jsf.cache.LRUMapCache.load(LRUMapCache.java:116)
 at org.ajax4jsf.cache.LRUMapCache.get(LRUMapCache.java:87)
 at org.ajax4jsf.resource.InternetResourceService.serviceResource(InternetResourceService.java:198)
 at org.ajax4jsf.resource.InternetResourceService.serviceResource(InternetResourceService.java:144)
 at org.ajax4jsf.webapp.BaseFilter.doFilter(BaseFilter.java:265)
 at org.jboss.seam.web.Ajax4jsfFilter.doFilter(Ajax4jsfFilter.java:60)
 at org.jboss.seam.servlet.SeamFilter$FilterChainImpl.doFilter(SeamFilter.java:69)
 at org.jboss.seam.web.LoggingFilter.doFilter(LoggingFilter.java:58)
 at org.jboss.seam.servlet.SeamFilter$FilterChainImpl.doFilter(SeamFilter.java:69)
 at org.jboss.seam.servlet.SeamFilter.doFilter(SeamFilter.java:150)
 at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:215)
 at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:188)
 at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:215)
 at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:188)
 at org.apache.catalina.core.StandardWrapperValve.invoke(StandardWrapperValve.java:210)
 at org.apache.catalina.core.StandardContextValve.invoke(StandardContextValve.java:174)
 at org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.java:127)
 at org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:117)
 at org.apache.catalina.core.StandardEngineValve.invoke(StandardEngineValve.java:108)
 at org.apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.java:151)
 at org.apache.coyote.http11.Http11Processor.process(Http11Processor.java:870)
 at org.apache.coyote.http11.Http11BaseProtocol$Http11ConnectionHandler.processConnection(Http11BaseProtocol.java:665)
 at org.apache.tomcat.util.net.PoolTcpEndpoint.processSocket(PoolTcpEndpoint.java:528)
 at org.apache.tomcat.util.net.LeaderFollowerWorkerThread.runIt(LeaderFollowerWorkerThread.java:81)
 at org.apache.tomcat.util.threads.ThreadPool$ControlRunnable.run(ThreadPool.java:685)
 at java.lang.Thread.run(Thread.java:595)
Caused by: java.lang.IllegalStateException: session was null: #{ourDatabase}
 at org.jboss.seam.transaction.HibernateTransaction.initSession(HibernateTransaction.java:71)
 at org.jboss.seam.transaction.HibernateTransaction.begin(HibernateTransaction.java:79)
 at org.jboss.seam.jsf.SeamPhaseListener.begin(SeamPhaseListener.java:566)
 ... 32 more

Anyone know what the cause might be? It doesn't seem to affect the functionality of anything...

[igx89]

By not affecting the functionality, I mean that my database reads and writes all seem to work fine.

[pmuir]

http://jira.jboss.com/jira/browse/JBSEAM-1959

[igx89]

Being a RichFaces integration problem makes sense, since that's about the time I started having this problem. I'll add my vote to it...

[igx89]

Still occurring with Seam 2.0.0-CR2 and RichFaces 3.1.1-GA, though with a slightly different stack trace (see the bridge between ajax4jsf and seam):

ERROR SeamPhaseListener - uncaught exception
java.lang.IllegalStateException: Could not start transaction
 at org.jboss.seam.jsf.SeamPhaseListener.begin(SeamPhaseListener.java:571)
 at org.jboss.seam.jsf.SeamPhaseListener.handleTransactionsBeforePhase(SeamPhaseListener.java:307)
 at org.jboss.seam.jsf.SeamPhaseListener.beforeServletPhase(SeamPhaseListener.java:142)
 at org.jboss.seam.jsf.SeamPhaseListener.beforePhase(SeamPhaseListener.java:116)
 at org.ajax4jsf.resource.ResourceLifecycle.invokePhaseListener(ResourceLifecycle.java:201)
 at org.ajax4jsf.resource.ResourceLifecycle.processPhaseListeners(ResourceLifecycle.java:177)
 at org.ajax4jsf.resource.ResourceLifecycle.send(ResourceLifecycle.java:147)
 at org.ajax4jsf.resource.InternetResourceService.load(InternetResourceService.java:336)
 at org.ajax4jsf.cache.LRUMapCache.load(LRUMapCache.java:116)
 at org.ajax4jsf.cache.LRUMapCache.get(LRUMapCache.java:87)
 at org.ajax4jsf.resource.InternetResourceService.serviceResource(InternetResourceService.java:198)
 at org.ajax4jsf.resource.InternetResourceService.serviceResource(InternetResourceService.java:144)
 at org.ajax4jsf.webapp.BaseFilter.doFilter(BaseFilter.java:265)
 at org.jboss.seam.web.Ajax4jsfFilter.doFilter(Ajax4jsfFilter.java:60)
 at org.jboss.seam.servlet.SeamFilter$FilterChainImpl.doFilter(SeamFilter.java:69)
 at org.jboss.seam.web.LoggingFilter.doFilter(LoggingFilter.java:58)
 at org.jboss.seam.servlet.SeamFilter$FilterChainImpl.doFilter(SeamFilter.java:69)
 at org.jboss.seam.servlet.SeamFilter.doFilter(SeamFilter.java:150)
 at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:215)
 at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:188)
 at com.fl.nuevo.utils.ResponseHeaderFilter.doFilter(ResponseHeaderFilter.java:42)
 at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:215)
 at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:188)
 at org.apache.catalina.core.StandardWrapperValve.invoke(StandardWrapperValve.java:210)
 at org.apache.catalina.core.StandardContextValve.invoke(StandardContextValve.java:174)
 at org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.java:127)
 at org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:117)
 at org.apache.catalina.core.StandardEngineValve.invoke(StandardEngineValve.java:108)
 at org.apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.java:151)
 at org.apache.coyote.http11.Http11Processor.process(Http11Processor.java:870)
 at org.apache.coyote.http11.Http11BaseProtocol$Http11ConnectionHandler.processConnection(Http11BaseProtocol.java:665)
 at org.apache.tomcat.util.net.PoolTcpEndpoint.processSocket(PoolTcpEndpoint.java:528)
 at org.apache.tomcat.util.net.LeaderFollowerWorkerThread.runIt(LeaderFollowerWorkerThread.java:81)
 at org.apache.tomcat.util.threads.ThreadPool$ControlRunnable.run(ThreadPool.java:685)
 at java.lang.Thread.run(Thread.java:595)
Caused by: java.lang.IllegalStateException: session was null: #{trackerDatabase}
 at org.jboss.seam.transaction.HibernateTransaction.initSession(HibernateTransaction.java:71)
 at org.jboss.seam.transaction.HibernateTransaction.begin(HibernateTransaction.java:79)
 at org.jboss.seam.jsf.SeamPhaseListener.begin(SeamPhaseListener.java:566)
 ... 34 more

[pmuir]

Can you open a new JIRA issue please?

[igx89]

Done: http://jira.jboss.com/jira/browse/JBSEAM-2053

[pmuir]

Could you post your components.xml?

[pmuir]

Even better if you can attach a simple testcase to reproduce to the jira issue that would be great!

[igx89]

Here's my components.xml:

<?xml version="1.0" encoding="UTF-8"?>
<components xmlns="http://jboss.com/products/seam/components"
 xmlns:bpm="http://jboss.com/products/seam/bpm"
 xmlns:core="http://jboss.com/products/seam/core"
 xmlns:persistence="http://jboss.com/products/seam/persistence"
 xmlns:security="http://jboss.com/products/seam/security"
 xmlns:transaction="http://jboss.com/products/seam/transaction"
 xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
 xsi:schemaLocation=
 "http://jboss.com/products/seam/bpm http://jboss.com/products/seam/bpm-2.0.xsd
 http://jboss.com/products/seam/core http://jboss.com/products/seam/core-2.0.xsd
 http://jboss.com/products/seam/security http://jboss.com/products/seam/security-2.0.xsd
 http://jboss.com/products/seam/components http://jboss.com/products/seam/components-2.0.xsd
 http://jboss.com/products/seam/persistence http://jboss.com/products/seam/persistence-2.0.xsd
 http://jboss.com/products/seam/transaction http://jboss.com/products/seam/transaction-2.0.xsd">

 <core:init debug="true"/>

 <core:manager conversation-timeout="120000"
 concurrent-request-timeout="500"
 conversation-id-parameter="cid"/>


 <component name="hibernateSessionFactory" class="com.fl.nuevo.seam.SmartHibernateSessionFactory" />

 <persistence:managed-hibernate-session name="trackerDatabase"
 session-factory="#{hibernateSessionFactory}"
 auto-create="true"/>

 <transaction:hibernate-transaction session="#{trackerDatabase}"/>


 <bpm:jbpm>
 <bpm:pageflow-definitions>
 <value>com/fl/nuevo/scheduler/process_scheduleCall.jpdl.xml</value>

 <value>com/fl/nuevo/scheduler/initialCall.jpdl.xml</value>
 <value>com/fl/nuevo/scheduler/rescheduleCall.jpdl.xml</value>
 <value>com/fl/nuevo/scheduler/rescheduleCallReason.jpdl.xml</value>
 <value>com/fl/nuevo/scheduler/devCall.jpdl.xml</value>
 <value>com/fl/nuevo/scheduler/subsDevCall.jpdl.xml</value>
 <value>com/fl/nuevo/scheduler/reassignRoles.jpdl.xml</value>
 <value>com/fl/nuevo/scheduler/updateContacts.jpdl.xml</value>
 <value>com/fl/nuevo/scheduler/callDetails.jpdl.xml</value>
 </bpm:pageflow-definitions>
 </bpm:jbpm>


 <component class="com.fl.nuevo.hibernate.helper.HelperFactory" name="hh" scope="STATELESS" />

 <component class="org.jboss.seam.international.TimeZoneSelector">
 <property name="timeZoneId">America/Chicago</property>
 </component>

</components>

I'll try to put together a test app, though that might take a while.

[pmuir]

Thanks!

[igx89]

It's apparently so random, when I get the exception and then restart the server and perform the same steps the exception doesn't happen :/. A number of times I've also gone to pages and they loaded exception-free, but then a mere browser refresh causes the exception (only the first refresh, not additional). Very, very strange...

[pmuir]

I think it's related to http://jira.jboss.com/jira/browse/RF-1109 - which Wesley just provided us with an example of. I suggest you hang tight until we can get his example fixed and try that?

[igx89]

Ok, sounds good :)