topic REST API call gets stuck intermittently in Alfresco Archive https://connect.hyland.com/t5/alfresco-archive/rest-api-call-gets-stuck-intermittently/m-p/173462#M126608 <HTML><HEAD></HEAD><BODY><SPAN>Hi,</SPAN><BR /><BR /><SPAN>First of all, kudos to the Activiti team for a great BPM software. After researching several BPM softwares we decided to go with Activiti.</SPAN><BR /><BR /><SPAN>So as you might have guessed I am new to Activiti Engine and running into a issue with an initial POC.</SPAN><BR /><BR /><SPAN>I have deployed the out of the box activiti-explorer and activiti REST application, (activiti version 5.15.1) on Tomcat with a MySQL DB on Google Compute Engine.</SPAN><BR /><BR /><SPAN>I am writing a client application which talks to activiti engine through the REST API (cool REST support !!). But I am facing an intermittent issue with the REST call, it gets stuck and my client times out. </SPAN><BR /><SPAN>When this happens on the server side access logs I see the first request is returned for the basic authentication (http status code 401) and the second request after authentication is never completed.</SPAN><BR /><BR /><SPAN>So in successful secenario I see both requests.</SPAN><BR /><SPAN>"GET /activiti-rest/service/repository/process-definitions HTTP/1.1" 401 73</SPAN><BR /><SPAN>"GET /activiti-rest/service/repository/process-definitions HTTP/1.1" 6992</SPAN><BR /><BR /><SPAN>And an error scenario looks like this, (second request is not full filled)</SPAN><BR /><SPAN>"GET /activiti-rest/service/repository/process-definitions HTTP/1.1" 401 73</SPAN><BR /><BR /><SPAN>When this happens I don't see any errors on the tomcat logs, once I restart the tomcat everything works fine till the time it get stuck again.</SPAN><BR /><BR /><SPAN>I do get an error while restarting tomcat (not sure it is related to the above error)</SPAN><BR /><SPAN>SEVERE: Exception loading sessions from persistent storage</SPAN><BR /><SPAN>java.io.WriteAbortedException: writing aborted; java.io.NotSerializableException: org.activiti.workflow.simple.converter.json.SimpleWorkflowJsonConverter</SPAN><BR /><SPAN>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; at java.io.ObjectInputStream.readObject0(ObjectInputStream.java:1354)</SPAN><BR /><SPAN>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; …..</SPAN><BR /><SPAN>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; ….</SPAN><BR /><SPAN>Caused by: java.io.NotSerializableException: org.activiti.workflow.simple.converter.json.SimpleWorkflowJsonConverter</SPAN><BR /><SPAN>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; at java.io.ObjectOutputStream.writeObject0(ObjectOutputStream.java:1183)</SPAN><BR /><SPAN>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; at java.io.ObjectOutputStream.defaultWriteFields(ObjectOutputStream.java:1547)</SPAN><BR /><SPAN>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; ….</SPAN><BR /><SPAN>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; </SPAN><BR /><SPAN>Any ideas?</SPAN><BR /><SPAN>&nbsp; </SPAN><BR /><SPAN>Also is there an easy way to turn off Basic Authentication in REST call? I wanted to try that to see if this goes way.</SPAN><BR /><SPAN>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; </SPAN><BR /><SPAN>Thanks</SPAN><BR /><SPAN>SSN&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; </SPAN><BR /></BODY></HTML> Sun, 18 May 2014 20:25:35 GMT soorejnair 2014-05-18T20:25:35Z REST API call gets stuck intermittently https://connect.hyland.com/t5/alfresco-archive/rest-api-call-gets-stuck-intermittently/m-p/173462#M126608 Hi,First of all, kudos to the Activiti team for a great BPM software. After researching several BPM softwares we decided to go with Activiti.So as you might have guessed I am new to Activiti Engine and running into a issue with an initial POC.I have deployed the out of the box activiti-explorer and Sun, 18 May 2014 20:25:35 GMT https://connect.hyland.com/t5/alfresco-archive/rest-api-call-gets-stuck-intermittently/m-p/173462#M126608 soorejnair 2014-05-18T20:25:35Z Re: REST API call gets stuck intermittently https://connect.hyland.com/t5/alfresco-archive/rest-api-call-gets-stuck-intermittently/m-p/173463#M126609 <HTML><HEAD></HEAD><BODY><SPAN>Enabled debug and this what I see when it get stuck.</SPAN><BR /><BR /><SPAN>11:25:59,486 [http-bio-8080-exec-2] DEBUG org.activiti.engine.impl.interceptor.LogInterceptor&nbsp; - — starting CheckPassword ——————————————————–</SPAN><BR /><SPAN>11:25:59,486 [http-bio-8080-exec-2] DEBUG org.activiti.spring.SpringTransactionInterceptor&nbsp; - Running command with propagation REQUIRED</SPAN><BR /><SPAN>11:25:59,486 [http-bio-8080-exec-2] DEBUG org.springframework.jdbc.datasource.DataSourceTransactionManager&nbsp; - Creating new transaction with name [null]: PROPAGATION_REQUIRED,ISOLATION_DEFAULT</SPAN></BODY></HTML> Sun, 18 May 2014 23:28:57 GMT https://connect.hyland.com/t5/alfresco-archive/rest-api-call-gets-stuck-intermittently/m-p/173463#M126609 soorejnair 2014-05-18T23:28:57Z