topic OptimisticLocking exception when try to update execution-variable in Alfresco Archive https://connect.hyland.com/t5/alfresco-archive/optimisticlocking-exception-when-try-to-update-execution/m-p/245945#M199075 <HTML><HEAD></HEAD><BODY><SPAN>Hi,</SPAN><BR /><SPAN>I have setup a spring activiti engine.</SPAN><BR /><SPAN>I do a ProcessEngines.getDefaultProcessEngine(), will i get the same spring engine instance ?</SPAN><BR /><SPAN>How many job-executors will i have ? (i have my default job-executor turned on in config, async-executor is off)</SPAN><BR /><BR /><SPAN>Now the issue:</SPAN><BR /><SPAN>I startProceInstanceByKey(), and set a variable named 'envelop' in variableMap.</SPAN><BR /><SPAN>I have a process which has a service task. </SPAN><BR /><SPAN>1. This service task delegate (of type TaskActivityBehavior) puts a JMS message on ActiveMQ and a MessageListener reads it and makes REST call to external service.</SPAN><BR /><SPAN>2. The external service returns response via an REST end point in my system.</SPAN><BR /><SPAN>3. During this time my service task is waiting for a signal.</SPAN><BR /><SPAN>4. I am trying to update the value of variable 'envelop' with response received from external service. I use ProcessEngines.getDefaultProcessEngine().getRuntimeService().setVariable("envelop",newValue);</SPAN><BR /><SPAN>5. I signal the waiting serviceTask using the stored executionID. I use ProcessEngines.getDefaultProcessEngine().getRuntimeService().signal(envelop.getExecutionId());</SPAN><BR /><BR /><SPAN>I ran above process to spawn 100 processInstances. Out of which 96 succeeded, but 4 failed.</SPAN><BR /><SPAN>All four had same reason. In Step 4 above, while updating the execution variable it throws OptimisticLocking error as below:</SPAN><BR /><SPAN>org.activiti.engine.ActivitiOptimisticLockingException: ByteArrayEntity[id=290, name=var-envelop, size=335] was updated by another transaction concurrently.</SPAN><BR /><BR /><SPAN>Kindly help, my envelop variable is associated with different executionID, there is no case where someone else will update it in another transaction.</SPAN></BODY></HTML> Sun, 07 Feb 2016 09:10:11 GMT shreyashp 2016-02-07T09:10:11Z OptimisticLocking exception when try to update execution-variable https://connect.hyland.com/t5/alfresco-archive/optimisticlocking-exception-when-try-to-update-execution/m-p/245945#M199075 Hi,I have setup a spring activiti engine.I do a ProcessEngines.getDefaultProcessEngine(), will i get the same spring engine instance ?How many job-executors will i have ? (i have my default job-executor turned on in config, async-executor is off)Now the issue:I startProceInstanceByKey(), and set a v Sun, 07 Feb 2016 09:10:11 GMT https://connect.hyland.com/t5/alfresco-archive/optimisticlocking-exception-when-try-to-update-execution/m-p/245945#M199075 shreyashp 2016-02-07T09:10:11Z Re: OptimisticLocking exception when try to update execution-variable https://connect.hyland.com/t5/alfresco-archive/optimisticlocking-exception-when-try-to-update-execution/m-p/245946#M199076 <HTML><HEAD></HEAD><BODY><SPAN>StackTrace:</SPAN><BR /><SPAN>org.activiti.engine.ActivitiOptimisticLockingException: ByteArrayEntity[id=592, name=var-envelop, size=335] was updated by another transaction concurrently</SPAN><BR /><SPAN> at org.activiti.engine.impl.db.DbSqlSession.flushUpdates(DbSqlSession.java:875)</SPAN><BR /><SPAN> at org.activiti.engine.impl.db.DbSqlSession.flush(DbSqlSession.java:614)</SPAN><BR /><SPAN> at org.activiti.engine.impl.interceptor.CommandContext.flushSessions(CommandContext.java:212)</SPAN><BR /><SPAN> at org.activiti.engine.impl.interceptor.CommandContext.close(CommandContext.java:138)</SPAN><BR /><SPAN> at org.activiti.engine.impl.interceptor.CommandContextInterceptor.execute(CommandContextInterceptor.java:66)</SPAN><BR /><SPAN> at org.activiti.spring.SpringTransactionInterceptor$1.doInTransaction(SpringTransactionInterceptor.java:47)</SPAN><BR /><SPAN> at org.springframework.transaction.support.TransactionTemplate.execute(TransactionTemplate.java:133)</SPAN><BR /><SPAN> at org.activiti.spring.SpringTransactionInterceptor.execute(SpringTransactionInterceptor.java:45)</SPAN><BR /><SPAN> at org.activiti.engine.impl.interceptor.LogInterceptor.execute(LogInterceptor.java:31)</SPAN><BR /><SPAN> at org.activiti.engine.impl.cfg.CommandExecutorImpl.execute(CommandExecutorImpl.java:40)</SPAN><BR /><SPAN> at org.activiti.engine.impl.cfg.CommandExecutorImpl.execute(CommandExecutorImpl.java:35)</SPAN><BR /><SPAN> at org.activiti.engine.impl.RuntimeServiceImpl.setVariable(RuntimeServiceImpl.java:186)</SPAN></BODY></HTML> Sun, 07 Feb 2016 09:23:04 GMT https://connect.hyland.com/t5/alfresco-archive/optimisticlocking-exception-when-try-to-update-execution/m-p/245946#M199076 shreyashp 2016-02-07T09:23:04Z Re: OptimisticLocking exception when try to update execution-variable https://connect.hyland.com/t5/alfresco-archive/optimisticlocking-exception-when-try-to-update-execution/m-p/245947#M199077 <HTML><HEAD></HEAD><BODY><SPAN>Hi,</SPAN><BR /><BR /><SPAN>could you reproduce the issue in the jUnit test please?</SPAN><BR /><BR /><A href="https://forums.activiti.org/content/sticky-how-write-unit-test" rel="nofollow noopener noreferrer">https://forums.activiti.org/content/sticky-how-write-unit-test</A><BR /><BR /><SPAN>Regards</SPAN><BR /><SPAN>Martin</SPAN></BODY></HTML> Mon, 08 Feb 2016 08:09:14 GMT https://connect.hyland.com/t5/alfresco-archive/optimisticlocking-exception-when-try-to-update-execution/m-p/245947#M199077 martin_grofcik 2016-02-08T08:09:14Z Re: OptimisticLocking exception when try to update execution-variable https://connect.hyland.com/t5/alfresco-archive/optimisticlocking-exception-when-try-to-update-execution/m-p/245948#M199078 <HTML><HEAD></HEAD><BODY><SPAN>About your questions:</SPAN><BR /><BR /><SPAN>"I do a ProcessEngines.getDefaultProcessEngine(), will i get the same spring engine instance ?"</SPAN><BR /><BR /><SPAN>Yes. It will return the same ProcessEngine instance.</SPAN><BR /><BR /><SPAN>"How many job-executors will i have ? (i have my default job-executor turned on in config, async-executor is off)"</SPAN><BR /><BR /><SPAN>One. The 'old' job executor will be used (async executor is the new one).</SPAN></BODY></HTML> Tue, 09 Feb 2016 07:54:47 GMT https://connect.hyland.com/t5/alfresco-archive/optimisticlocking-exception-when-try-to-update-execution/m-p/245948#M199078 jbarrez 2016-02-09T07:54:47Z