[jboss-jira] [JBoss JIRA] Created: (EJBTHREE-836) Quartz Resourceadapter: Quartz with JDBC-Jobstore (required for Clustering) leads to NPE in QuartzJob

[Dieter Rehbein (JIRA)]

Quartz Resourceadapter: Quartz with JDBC-Jobstore (required for Clustering) leads to NPE in QuartzJob
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                 Key: EJBTHREE-836
                 URL: http://jira.jboss.com/jira/browse/EJBTHREE-836
             Project: EJB 3.0
          Issue Type: Bug
            Reporter: Dieter Rehbein
         Attachments: ejb3tests.jar, quartz-ds.xml, quartz.properties

For our customer we need clustered quartz-timers. This requires a JDBC-Jobstore (see http://wiki.opensymphony.com/display/QRTZ1/TutorialLesson11).

Using a JDBC-Jobstore leads to the following exception:

16:46:40,046 ERROR [JobRunShell] Job default.job.0.1169048021109 threw an unhandled Exception:
java.lang.NullPointerException
        at org.jboss.resource.adapter.quartz.inflow.QuartzJob.execute(QuartzJob.java:53)
        at org.quartz.core.JobRunShell.run(JobRunShell.java:203)
        at org.quartz.simpl.SimpleThreadPool$WorkerThread.run(SimpleThreadPool.java:520)


This is what we've done:

1. installed jBoss with ejb3 clustered profile

2. created a quartz.properties in directory <jboss-home>/server/default/conf   (see attached file)

3. added a quartz-ds.xml to <jboss-home>/server/default/deploy (using a mySQL-database)  (see attached file)

4. moved the file quartz-ra.rar from <jboss-home>/server/default/deploy to <jboss-home>/server/default/deploy/deploy.last (to ensure, that the JDBC-datasource is already bound to JNDI when the resource-adapater is deployed)

5. created a simple test MDB (see attached files TestJob.java and ejb3test.jar) and deployed it to directory <jboss-home>/server/default/deploy/deploy.last

6. started jBoss => you can see the NPE every 10 seconds


I've debugged a little bit. This is, what I've found so far:

* If a JobStoreTX is used as JobStore, the class JobStoreTX uses StdJDBCDelegate.insertJobDetail(..) to store the JobDetails in the database. The method insertJobDetail(...) serializes the JobDataMap into a ByteArrayOutputStream.  The method endpointActivation(..) of class org.jboss.resource.adapter.quartz.inflow.QuartzResourceAdapter adds a reference to the MessageEndpointFactory to the JobDataMap (using the key "endpointFactory"). Since the MessageEndpointFactory is not serializable, the MessageEndpointFactory is not stored in the JDBC-Jobstore !

* The method execute(...)  of org.jboss.resource.adapter.quartz.inflow.QuartzJob retrieves the "endpointFactory" from the JobDataMap (which returns null, because it was not serialized). In line 53 the method createEndpoint(..) is called on a null-object => NPE











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