topic NullPointerException while running async tasks in Alfresco Forum https://connect.hyland.com/t5/alfresco-forum/nullpointerexception-while-running-async-tasks/m-p/12450#M5464 <HTML><HEAD></HEAD><BODY><P>Hi,</P><P></P><P>All of my tasks are async but while running I get this error and execution stops for a while and then starts again.</P><P>I don't want this to happen.Also I am facing alot of issues while debugging&nbsp;my code because of this error.</P><P>How can I solve this?</P><P></P><P></P><P>2018-05-14 13:06:22.514 ERROR 19368 --- [TaskExecutor-26] o.a.e.impl.interceptor.CommandContext&nbsp;&nbsp;&nbsp; : Error while closing command context</P><P>java.lang.NullPointerException: null</P><P>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; at org.activiti.engine.impl.persistence.entity.JobEntityManagerImpl.delete(JobEntityManagerImpl.java:151) ~[activiti-engine-6.0.0.jar:6.0.0]</P><P>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; at org.activiti.engine.impl.persistence.entity.JobEntityManagerImpl.delete(JobEntityManagerImpl.java:35) ~[activiti-engine-6.0.0.jar:6.0.0]</P><P>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; at org.activiti.engine.impl.persistence.entity.AbstractEntityManager.delete(AbstractEntityManager.java:87) ~[activiti-engine-6.0.0.jar:6.0.0]</P><P>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; at org.activiti.engine.impl.persistence.entity.JobEntityManagerImpl.delete(JobEntityManagerImpl.java:137) ~[activiti-engine-6.0.0.jar:6.0.0]</P><P>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; at org.activiti.engine.impl.persistence.entity.JobEntityManagerImpl.delete(JobEntityManagerImpl.java:35) ~[activiti-engine-6.0.0.jar:6.0.0]</P><P>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; at org.activiti.engine.impl.persistence.entity.AbstractEntityManager.delete(AbstractEntityManager.java:82) ~[activiti-engine-6.0.0.jar:6.0.0]</P><P>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; at org.activiti.engine.impl.asyncexecutor.DefaultJobManager.unacquire(DefaultJobManager.java:230) ~[activiti-engine-6.0.0.jar:6.0.0]</P><P>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; at org.activiti.engine.impl.asyncexecutor.ExecuteAsyncRunnable$3.execute(ExecuteAsyncRunnable.java:169) ~[activiti-engine-6.0.0.jar:6.0.0]</P><P>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; at org.activiti.engine.impl.asyncexecutor.ExecuteAsyncRunnable$3.execute(ExecuteAsyncRunnable.java:167) ~[activiti-engine-6.0.0.jar:6.0.0]</P><P>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; at org.activiti.engine.impl.interceptor.CommandInvoker$1.run(CommandInvoker.java:37) ~[activiti-engine-6.0.0.jar:6.0.0]</P><P>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; at org.activiti.engine.impl.interceptor.CommandInvoker.executeOperation(CommandInvoker.java:78) ~[activiti-engine-6.0.0.jar:6.0.0]</P><P>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; at org.activiti.engine.impl.interceptor.CommandInvoker.executeOperations(CommandInvoker.java:57) ~[activiti-engine-6.0.0.jar:6.0.0]</P><P>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; at org.activiti.engine.impl.interceptor.CommandInvoker.execute(CommandInvoker.java:42) ~[activiti-engine-6.0.0.jar:6.0.0]</P><P>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; at org.activiti.engine.impl.interceptor.TransactionContextInterceptor.execute(TransactionContextInterceptor.java:48) ~[activiti-engine-6.0.0.jar:6.0.0]</P><P>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; at org.activiti.engine.impl.interceptor.CommandContextInterceptor.execute(CommandContextInterceptor.java:63) ~[activiti-engine-6.0.0.jar:6.0.0]</P><P>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; at org.activiti.spring.SpringTransactionInterceptor$1.doInTransaction(SpringTransactionInterceptor.java:47) [activiti-spring-6.0.0.jar:6.0.0]</P><P>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; at org.springframework.transaction.support.TransactionTemplate.execute(TransactionTemplate.java:133) [spring-tx-4.3.7.RELEASE.jar:4.3.7.RELEASE]</P><P>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; at org.activiti.spring.SpringTransactionInterceptor.execute(SpringTransactionInterceptor.java:45) [activiti-spring-6.0.0.jar:6.0.0]</P><P>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; at org.activiti.engine.impl.interceptor.LogInterceptor.execute(LogInterceptor.java:29) [activiti-engine-6.0.0.jar:6.0.0]</P><P>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; at org.activiti.engine.impl.cfg.CommandExecutorImpl.execute(CommandExecutorImpl.java:44) [activiti-engine-6.0.0.jar:6.0.0]</P><P>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; at org.activiti.engine.impl.cfg.CommandExecutorImpl.execute(CommandExecutorImpl.java:39) [activiti-engine-6.0.0.jar:6.0.0]</P><P>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; at org.activiti.engine.impl.asyncexecutor.ExecuteAsyncRunnable.unacquireJob(ExecuteAsyncRunnable.java:167) [activiti-engine-6.0.0.jar:6.0.0]</P><P>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; at org.activiti.engine.impl.asyncexecutor.ExecuteAsyncRunnable.lockJobIfNeeded(ExecuteAsyncRunnable.java:154) [activiti-engine-6.0.0.jar:6.0.0]</P><P>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; at org.activiti.engine.impl.asyncexecutor.ExecuteAsyncRunnable.run(ExecuteAsyncRunnable.java:72) [activiti-engine-6.0.0.jar:6.0.0]</P><P>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; at java.lang.Thread.run(Thread.java:745) [na:1.8.0_73]</P><P></P><P>Thanks</P><P>Adi</P></BODY></HTML> Mon, 14 May 2018 07:45:27 GMT adi123 2018-05-14T07:45:27Z NullPointerException while running async tasks https://connect.hyland.com/t5/alfresco-forum/nullpointerexception-while-running-async-tasks/m-p/12450#M5464 Hi,All of my tasks are async but while running I get this error and execution stops for a while and then starts again.I don't want this to happen.Also I am facing alot of issues while debugging&nbsp;my code because of this error.How can I solve this?2018-05-14 13:06:22.514 ERROR 19368 --- [TaskExecutor-2 Mon, 14 May 2018 07:45:27 GMT https://connect.hyland.com/t5/alfresco-forum/nullpointerexception-while-running-async-tasks/m-p/12450#M5464 adi123 2018-05-14T07:45:27Z Re: NullPointerException while running async tasks https://connect.hyland.com/t5/alfresco-forum/nullpointerexception-while-running-async-tasks/m-p/12451#M5465 <HTML><HEAD></HEAD><BODY><P>See also&nbsp;<A __default_attr="233568" __jive_macro_name="thread" _jive_internal="true" class="jive_macro_thread jive_macro link-titled" href="https://community.alfresco.com/thread/233568-npe-jobentitymanagerimpldeletejobentitymanagerimpljava35-activiti-engine-600jar600" rel="nofollow noopener noreferrer"></A>&nbsp;</P><P></P><P>Regards,</P><P>Jan</P></BODY></HTML> Tue, 22 May 2018 17:24:55 GMT https://connect.hyland.com/t5/alfresco-forum/nullpointerexception-while-running-async-tasks/m-p/12451#M5465 janv 2018-05-22T17:24:55Z Re: NullPointerException while running async tasks https://connect.hyland.com/t5/alfresco-forum/nullpointerexception-while-running-async-tasks/m-p/12452#M5466 <HTML><HEAD></HEAD><BODY><P>Hi Jan,</P><P>We tried the above solution but it didn't work.Is there any other way to solve the issue?</P><P></P><P>Regards</P><P>Adi</P></BODY></HTML> Wed, 23 May 2018 12:27:25 GMT https://connect.hyland.com/t5/alfresco-forum/nullpointerexception-while-running-async-tasks/m-p/12452#M5466 adi123 2018-05-23T12:27:25Z