[JBoss jBPM] - Problem using multiple timers
by nikosd23
Hi,
We have identified a case in which when using 2 timers in a flow we get exception. To be more specific, we use the following process-definition.xml
<?xml version="1.0" encoding="UTF-8"?>
|
| <process-definition
| xmlns="" name="TestWait">
| <start-state name="start">
| <transition name="" to="SysOut "></transition>
| </start-state>
| <node name="SysOut ">
| <event type="node-enter">
| <action name="action1" class="com.handlers.FlowActionHandler" config-type="constructor">System.out.println('WAITING FOR '+firstTimer);</action></event>
| <transition name="" to="Wait for firstTimer"></transition></node>
| <state name="Wait for firstTimer">
| <timer duedate="4 seconds" transition="resp"><action class="com.handlers.TimeoutActionHandler"></action></timer>
| <transition name="resp" to="SysOut after 1"></transition>
| </state>
| <node name="SysOut after 1">
| <event type="node-enter">
| <action name="action1" class="com.handlers.FlowActionHandler" config-type="constructor">
| System.out.println('After first timer. Going to second timer');
| </action>
| </event>
| <transition name="" to="Wait secondTimer"></transition>
| </node>
| <state name="Wait secondTimer">
| <timer duedate="10 seconds" transition="resp"><action class="com.handlers.TimeoutActionHandler"></action></timer>
| <transition name="resp" to="SysOut after 2"></transition>
| </state>
| <node name="SysOut after 2">
| <event type="node-enter">
| <action name="action1" class="com.handlers.FlowActionHandler" config-type="constructor">System.out.println('After second wait time');
| </action>
| </event>
| <transition name="" to="end1"></transition>
| </node>
| <end-state name="end1"></end-state>
| </process-definition>
The source code of TimeoutActionHandler follows:
public class TimeoutActionHandler implements ActionHandler {
| private static final long serialVersionUID = 1L;
| private Logger log = Logger.getLogger(TimeoutActionHandler.class);
|
| public void execute(ExecutionContext executionContext) throws Exception {
|
| ProcessInstance processInstance = executionContext.getProcessInstance();
| if (processInstance.getRootToken().isLocked()) {
| log.debug("A timer of Flow " + processInstance.getId() + " was skipped. The flow had been resumed.");
| return;
| }
|
| executionContext.setVariable(MESSAGE_CODE, "timeout");
| executionContext.leaveNode();
| }
|
| }
The flow starts and we get in the first wait state, the token waits there for 4 seconds, then we have a System.out.println, then instead of getting in the second wait state, we get the second printout and we get errors. The errors we receive follow:
anonymous wrote : 2009-06-19 10:52:18,645 INFO [STDOUT] WAITING FOR 4 seconds
| 2009-06-19 10:52:18,660 WARN [org.hibernate.engine.StatefulPersistenceContext.ProxyWarnLog] Narrowing proxy to class org.jbpm.graph.node.State - this operation breaks ==
| 2009-06-19 10:52:22,225 WARN [org.hibernate.engine.StatefulPersistenceContext.ProxyWarnLog] Narrowing proxy to class org.jbpm.job.Timer - this operation breaks ==
| 2009-06-19 10:52:22,310 INFO [STDOUT] After first timer. Going to second timer
| 2009-06-19 10:52:22,327 WARN [org.hibernate.engine.StatefulPersistenceContext.ProxyWarnLog] Narrowing proxy to class org.jbpm.graph.node.State - this operation breaks ==
| 2009-06-19 10:52:22,398 INFO [STDOUT] After second wait time
| 2009-06-19 10:52:22,462 ERROR [org.hibernate.event.def.AbstractFlushingEventListener] Could not synchronize database state with session
| org.hibernate.StaleObjectStateException: Row was updated or deleted by another transaction (or unsaved-value mapping was incorrect): [org.jbpm.job.Timer#9853]
| at org.hibernate.persister.entity.AbstractEntityPersister.check(AbstractEntityPersister.java:1765)
| at org.hibernate.persister.entity.AbstractEntityPersister.delete(AbstractEntityPersister.java:2523)
| at org.hibernate.persister.entity.AbstractEntityPersister.delete(AbstractEntityPersister.java:2697)
| at org.hibernate.action.EntityDeleteAction.execute(EntityDeleteAction.java:74)
| at org.hibernate.engine.ActionQueue.execute(ActionQueue.java:250)
| at org.hibernate.engine.ActionQueue.executeActions(ActionQueue.java:234)
| at org.hibernate.engine.ActionQueue.executeActions(ActionQueue.java:146)
| at org.hibernate.event.def.AbstractFlushingEventListener.performExecutions(AbstractFlushingEventListener.java:298)
| at org.hibernate.event.def.DefaultFlushEventListener.onFlush(DefaultFlushEventListener.java:27)
| at org.hibernate.impl.SessionImpl.flush(SessionImpl.java:1000)
| at org.hibernate.impl.SessionImpl.managedFlush(SessionImpl.java:338)
| at org.hibernate.transaction.JDBCTransaction.commit(JDBCTransaction.java:106)
| at org.jbpm.persistence.db.DbPersistenceService.commit(DbPersistenceService.java:253)
| at org.jbpm.persistence.db.DbPersistenceService.close(DbPersistenceService.java:211)
| at org.jbpm.svc.Services.close(Services.java:222)
| at org.jbpm.JbpmContext.close(JbpmContext.java:139)
| at org.jbpm.job.executor.JobExecutorThread.executeJob(JobExecutorThread.java:267)
| at org.jbpm.job.executor.JobExecutorThread.run(JobExecutorThread.java:71)
| 2009-06-19 10:52:22,469 ERROR [org.jbpm.persistence.db.DbPersistenceService] hibernate commit failed
| org.hibernate.StaleObjectStateException: Row was updated or deleted by another transaction (or unsaved-value mapping was incorrect): [org.jbpm.job.Timer#9853]
| at org.hibernate.persister.entity.AbstractEntityPersister.check(AbstractEntityPersister.java:1765)
| at org.hibernate.persister.entity.AbstractEntityPersister.delete(AbstractEntityPersister.java:2523)
| at org.hibernate.persister.entity.AbstractEntityPersister.delete(AbstractEntityPersister.java:2697)
| at org.hibernate.action.EntityDeleteAction.execute(EntityDeleteAction.java:74)
| at org.hibernate.engine.ActionQueue.execute(ActionQueue.java:250)
| at org.hibernate.engine.ActionQueue.executeActions(ActionQueue.java:234)
| at org.hibernate.engine.ActionQueue.executeActions(ActionQueue.java:146)
| at org.hibernate.event.def.AbstractFlushingEventListener.performExecutions(AbstractFlushingEventListener.java:298)
| at org.hibernate.event.def.DefaultFlushEventListener.onFlush(DefaultFlushEventListener.java:27)
| at org.hibernate.impl.SessionImpl.flush(SessionImpl.java:1000)
| at org.hibernate.impl.SessionImpl.managedFlush(SessionImpl.java:338)
| at org.hibernate.transaction.JDBCTransaction.commit(JDBCTransaction.java:106)
| at org.jbpm.persistence.db.DbPersistenceService.commit(DbPersistenceService.java:253)
| at org.jbpm.persistence.db.DbPersistenceService.close(DbPersistenceService.java:211)
| at org.jbpm.svc.Services.close(Services.java:222)
| at org.jbpm.JbpmContext.close(JbpmContext.java:139)
| at org.jbpm.job.executor.JobExecutorThread.executeJob(JobExecutorThread.java:267)
| at org.jbpm.job.executor.JobExecutorThread.run(JobExecutorThread.java:71)
| 2009-06-19 10:52:22,471 ERROR [STDERR] org.jbpm.persistence.JbpmPersistenceException: hibernate commit failed
| 2009-06-19 10:52:22,472 ERROR [STDERR] at org.jbpm.persistence.db.DbPersistenceService.close(DbPersistenceService.java:216)
| 2009-06-19 10:52:22,472 ERROR [STDERR] at org.jbpm.svc.Services.close(Services.java:222)
| 2009-06-19 10:52:22,472 ERROR [STDERR] at org.jbpm.JbpmContext.close(JbpmContext.java:139)
| 2009-06-19 10:52:22,472 ERROR [STDERR] at org.jbpm.job.executor.JobExecutorThread.executeJob(JobExecutorThread.java:267)
| 2009-06-19 10:52:22,472 ERROR [STDERR] at org.jbpm.job.executor.JobExecutorThread.run(JobExecutorThread.java:71)
| 2009-06-19 10:52:22,472 ERROR [STDERR] Caused by: org.hibernate.StaleObjectStateException: Row was updated or deleted by another transaction (or unsaved-value mapping was incorrect): [org.jbpm.job.Timer#9853]
| 2009-06-19 10:52:22,472 ERROR [STDERR] at org.hibernate.persister.entity.AbstractEntityPersister.check(AbstractEntityPersister.java:1765)
| 2009-06-19 10:52:22,472 ERROR [STDERR] at org.hibernate.persister.entity.AbstractEntityPersister.delete(AbstractEntityPersister.java:2523)
| 2009-06-19 10:52:22,472 ERROR [STDERR] at org.hibernate.persister.entity.AbstractEntityPersister.delete(AbstractEntityPersister.java:2697)
| 2009-06-19 10:52:22,472 ERROR [STDERR] at org.hibernate.action.EntityDeleteAction.execute(EntityDeleteAction.java:74)
| 2009-06-19 10:52:22,472 ERROR [STDERR] at org.hibernate.engine.ActionQueue.execute(ActionQueue.java:250)
| 2009-06-19 10:52:22,472 ERROR [STDERR] at org.hibernate.engine.ActionQueue.executeActions(ActionQueue.java:234)
| 2009-06-19 10:52:22,472 ERROR [STDERR] at org.hibernate.engine.ActionQueue.executeActions(ActionQueue.java:146)
| 2009-06-19 10:52:22,473 ERROR [STDERR] at org.hibernate.event.def.AbstractFlushingEventListener.performExecutions(AbstractFlushingEventListener.java:298)
| 2009-06-19 10:52:22,473 ERROR [STDERR] at org.hibernate.event.def.DefaultFlushEventListener.onFlush(DefaultFlushEventListener.java:27)
| 2009-06-19 10:52:22,473 ERROR [STDERR] at org.hibernate.impl.SessionImpl.flush(SessionImpl.java:1000)
| 2009-06-19 10:52:22,473 ERROR [STDERR] at org.hibernate.impl.SessionImpl.managedFlush(SessionImpl.java:338)
| 2009-06-19 10:52:22,473 ERROR [STDERR] at org.hibernate.transaction.JDBCTransaction.commit(JDBCTransaction.java:106)
| 2009-06-19 10:52:22,473 ERROR [STDERR] at org.jbpm.persistence.db.DbPersistenceService.commit(DbPersistenceService.java:253)
| 2009-06-19 10:52:22,473 ERROR [STDERR] at org.jbpm.persistence.db.DbPersistenceService.close(DbPersistenceService.java:211)
| 2009-06-19 10:52:22,473 ERROR [STDERR] ... 4 more
| 2009-06-19 10:52:22,473 ERROR [org.jbpm.svc.Services] problem closing service 'persistence'
| org.jbpm.persistence.JbpmPersistenceException: hibernate commit failed
| at org.jbpm.persistence.db.DbPersistenceService.close(DbPersistenceService.java:216)
| at org.jbpm.svc.Services.close(Services.java:222)
| at org.jbpm.JbpmContext.close(JbpmContext.java:139)
| at org.jbpm.job.executor.JobExecutorThread.executeJob(JobExecutorThread.java:267)
| at org.jbpm.job.executor.JobExecutorThread.run(JobExecutorThread.java:71)
| Caused by: org.hibernate.StaleObjectStateException: Row was updated or deleted by another transaction (or unsaved-value mapping was incorrect): [org.jbpm.job.Timer#9853]
| at org.hibernate.persister.entity.AbstractEntityPersister.check(AbstractEntityPersister.java:1765)
| at org.hibernate.persister.entity.AbstractEntityPersister.delete(AbstractEntityPersister.java:2523)
| at org.hibernate.persister.entity.AbstractEntityPersister.delete(AbstractEntityPersister.java:2697)
| at org.hibernate.action.EntityDeleteAction.execute(EntityDeleteAction.java:74)
| at org.hibernate.engine.ActionQueue.execute(ActionQueue.java:250)
| at org.hibernate.engine.ActionQueue.executeActions(ActionQueue.java:234)
| at org.hibernate.engine.ActionQueue.executeActions(ActionQueue.java:146)
| at org.hibernate.event.def.AbstractFlushingEventListener.performExecutions(AbstractFlushingEventListener.java:298)
| at org.hibernate.event.def.DefaultFlushEventListener.onFlush(DefaultFlushEventListener.java:27)
| at org.hibernate.impl.SessionImpl.flush(SessionImpl.java:1000)
| at org.hibernate.impl.SessionImpl.managedFlush(SessionImpl.java:338)
| at org.hibernate.transaction.JDBCTransaction.commit(JDBCTransaction.java:106)
| at org.jbpm.persistence.db.DbPersistenceService.commit(DbPersistenceService.java:253)
| at org.jbpm.persistence.db.DbPersistenceService.close(DbPersistenceService.java:211)
| ... 4 more
| 2009-06-19 10:52:22,474 ERROR [org.jbpm.job.executor.JobExecutorThread] problem committing job execution transaction for job 9853-timer(Wait for firstTimer,10:52:22,000) (flow with id 6380)
| org.jbpm.JbpmException: problem closing services {persistence=org.jbpm.persistence.JbpmPersistenceException: hibernate commit failed}
| at org.jbpm.svc.Services.close(Services.java:235)
| at org.jbpm.JbpmContext.close(JbpmContext.java:139)
| at org.jbpm.job.executor.JobExecutorThread.executeJob(JobExecutorThread.java:267)
| at org.jbpm.job.executor.JobExecutorThread.run(JobExecutorThread.java:71)
| Caused by: org.jbpm.persistence.JbpmPersistenceException: hibernate commit failed
| at org.jbpm.persistence.db.DbPersistenceService.close(DbPersistenceService.java:216)
| at org.jbpm.svc.Services.close(Services.java:222)
| ... 3 more
| Caused by: org.hibernate.StaleObjectStateException: Row was updated or deleted by another transaction (or unsaved-value mapping was incorrect): [org.jbpm.job.Timer#9853]
| at org.hibernate.persister.entity.AbstractEntityPersister.check(AbstractEntityPersister.java:1765)
| at org.hibernate.persister.entity.AbstractEntityPersister.delete(AbstractEntityPersister.java:2523)
| at org.hibernate.persister.entity.AbstractEntityPersister.delete(AbstractEntityPersister.java:2697)
| at org.hibernate.action.EntityDeleteAction.execute(EntityDeleteAction.java:74)
| at org.hibernate.engine.ActionQueue.execute(ActionQueue.java:250)
| at org.hibernate.engine.ActionQueue.executeActions(ActionQueue.java:234)
| at org.hibernate.engine.ActionQueue.executeActions(ActionQueue.java:146)
| at org.hibernate.event.def.AbstractFlushingEventListener.performExecutions(AbstractFlushingEventListener.java:298)
| at org.hibernate.event.def.DefaultFlushEventListener.onFlush(DefaultFlushEventListener.java:27)
| at org.hibernate.impl.SessionImpl.flush(SessionImpl.java:1000)
| at org.hibernate.impl.SessionImpl.managedFlush(SessionImpl.java:338)
| at org.hibernate.transaction.JDBCTransaction.commit(JDBCTransaction.java:106)
| at org.jbpm.persistence.db.DbPersistenceService.commit(DbPersistenceService.java:253)
| at org.jbpm.persistence.db.DbPersistenceService.close(DbPersistenceService.java:211)
| ... 4 more
| 2009-06-19 10:52:22,475 ERROR [org.jbpm.job.executor.JobExecutorThread] exception in job executor thread. waiting 5000 milliseconds
| org.jbpm.JbpmException: problem closing services {persistence=org.jbpm.persistence.JbpmPersistenceException: hibernate commit failed}
| at org.jbpm.svc.Services.close(Services.java:235)
| at org.jbpm.JbpmContext.close(JbpmContext.java:139)
| at org.jbpm.job.executor.JobExecutorThread.executeJob(JobExecutorThread.java:267)
| at org.jbpm.job.executor.JobExecutorThread.run(JobExecutorThread.java:71)
| Caused by: org.jbpm.persistence.JbpmPersistenceException: hibernate commit failed
| at org.jbpm.persistence.db.DbPersistenceService.close(DbPersistenceService.java:216)
| at org.jbpm.svc.Services.close(Services.java:222)
| ... 3 more
| Caused by: org.hibernate.StaleObjectStateException: Row was updated or deleted by another transaction (or unsaved-value mapping was incorrect): [org.jbpm.job.Timer#9853]
| at org.hibernate.persister.entity.AbstractEntityPersister.check(AbstractEntityPersister.java:1765)
| at org.hibernate.persister.entity.AbstractEntityPersister.delete(AbstractEntityPersister.java:2523)
| at org.hibernate.persister.entity.AbstractEntityPersister.delete(AbstractEntityPersister.java:2697)
| at org.hibernate.action.EntityDeleteAction.execute(EntityDeleteAction.java:74)
| at org.hibernate.engine.ActionQueue.execute(ActionQueue.java:250)
| at org.hibernate.engine.ActionQueue.executeActions(ActionQueue.java:234)
| at org.hibernate.engine.ActionQueue.executeActions(ActionQueue.java:146)
| at org.hibernate.event.def.AbstractFlushingEventListener.performExecutions(AbstractFlushingEventListener.java:298)
| at org.hibernate.event.def.DefaultFlushEventListener.onFlush(DefaultFlushEventListener.java:27)
| at org.hibernate.impl.SessionImpl.flush(SessionImpl.java:1000)
| at org.hibernate.impl.SessionImpl.managedFlush(SessionImpl.java:338)
| at org.hibernate.transaction.JDBCTransaction.commit(JDBCTransaction.java:106)
| at org.jbpm.persistence.db.DbPersistenceService.commit(DbPersistenceService.java:253)
| at org.jbpm.persistence.db.DbPersistenceService.close(DbPersistenceService.java:211)
| ... 4 more
You can see both the system outs and the errors produced. We would like to know if someone has faced the same error (and how to resolve it)or if there is a bug of jbpm that is already resolved in the new edition. We are using JBOSS 4.2.2 and jBPM 3.1
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17 years, 1 month
[Remoting] - Failsafe RMI
by goldi
Hy,
I'm wondering what the best way is to make a RMI/Synchron-Call (from JBoss to JBoss) failsafe. So I have JBoss1 in wich is running a SSB
(doing some things on DB return result), and JBoss 2 in wich is running a SSB calling SSB on JBoss1.
Problems that may occur:
- SSB from JBoss2 tries to call SSB on JBoss1 and JBoss1 is down
+ how to retry the call?
- SSB from JBoss2 calls SSB on JBoss1 and the connection gets lots during the call
+ how to retry the call?
- SSB from JBoss2 calls SSB on JBoss1, SSB on JBoss1 changes things in the DB after that the connection between the two JBoss gets lost
+ how to rollaback the changes in the database?
I took a look at jboss-remoting and it seems that this could solve this problems.
Greets goldi
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17 years, 1 month
[JBoss Portal] - Portlet Session Replication related query
by rinku05
I am using jboss AS 4.2.1, jboss portal and apache2.2 for clustering setup.
I am successful in achieving the clustering. My test scenarios are:
Scenario1:
1. start the jboss application server and apache server on both the machines.
2. login to the site, minimize the portlet say on pageA.
3. stop the server which served this page.
4. You will be still on the same pageA with portlet still minimized(as desired)
5. click on different tab, now come back to the pageA. Now the portlet size is not the minimized one but the original one.
But if before performing step5 you refresh the page, portlet size on pageA would minimized one.
Is this the expected behaviour?
Scenario2:
I have one more issue:
1. start the jboss application server and apache server on both the machines.
2. login to the site.
3. click on different tab to get pageA
3. stop the server which served this page.
4. You will be still on the same pageA
5. Now click on logout link.
You'll be taken to home tab ie default tab. If you click logout now u would be looged out.
But if before performing step5 you refresh the page, and now click logout, u'll be logget out.
Please help me.Please reply.Its very urgent.
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17 years, 1 month