Process stucked at service task after calling rest end point

Camunda 7 Topics Discussion & Questions
1

Hello,
our process is getting stucked and never return just after calling rest end point.
Here is the java class Delegate method
public class CreateOrderSequence implements JavaDelegate {
public void execute(DelegateExecution execution) throws Exception {
String Operation = execution.getCurrentActivityName();
System.out.println(“CreateOrderSequence JavaDelegate execute method called!!!”);
String ProcessId = execution.getProcessInstanceId();
String Barcode = execution.getVariable(“palletbarcode”).toString();
String Process = execution.getVariable(“process”).toString();
String IlServiceSocket = execution.getVariable(“socket”).toString();
JSONObject body = new JSONObject();
body.put(“id”, ProcessId);
body.put(“palletbarcode”, Barcode);
body.put(“process”, Process);
RequestEntity request = RequestEntity.post(new URI(“http://” + IlServiceSocket + “api/orchestrator/create_ordersequence”))
.accept(MediaType.APPLICATION_JSON).body(body);

	RestTemplate restTemplate = new RestTemplate();
	ResponseEntity<JSONObject> response = restTemplate.exchange(request, JSONObject.class);
	System.out.println("response:" + response);

}
this class not printing response.

I tried to dump my java threads log dump (jstack.txtjstack.txt (71.3 KB) )

and attaching my bpmn diagram as well
processflow.bpmn (30.0 KB)

below is my application.properties file content

data source config

camunda.bpm.database.type=postgres
spring.datasource.url=jdbc:postgresql://localhost:5432/camunda
spring.datasource.username=postgres
spring.datasource.password=postgres
spring.datasource.driverClassName=org.postgresql.Driver
#camunda.bpm.database.schema-update=create-drop
#camunda.bpm.database.table-prefix=camunda

logging config

logging.level.org.camunda.bpm.example=DEBUG
logging.level.org.camunda.bpm=INFO
logging.level.org.springframework=INFO

camunda config

camunda.bpm.history-level=audit

camunda.bpm.admin-user.id = admin
camunda.bpm.admin-user.password= admin
camunda.bpm.admin-user.first-name= admin
camunda.bpm.admin-user.last-name= admin

server.port=8090
spring.jersey.application-path=/orchestrator

I am not an expert into camunda, please help to solve it.

2

Can you give more details of which part of the process is causing the problem?

I also notice that for some reason you have an insane retry cycle on your tasks.
R10000/PT30S
This would cause a whole bunch of problems potentially, becuase if an error that can’t be fixed keeps happening then it’s gonna try 10000 times EVERY 30 secords

3

Hi Nail,
I am getting issue randomly on any of service tasks.
and it’s not happening always, like I successfully ran 300 tasks yesterday night but when today I am trying to run the same kind of tasks it is getting issue.
R10000/PT30S => we did such kind of configurations because sometimes we need to keep alive these processes for 3-4 days(like task initiated in last week and completed in next week after weekend).

even I tried after deleting camunda database from postgres and then create only 5 tasks.

4

Hi,
I tried some more things like reduced retry time cycles like R1/PT30S but that one also did not solved this problem.
So finally I removed Asynchronous before from Asynchronous continuations section and it is working fine after that.
So please help to how can I make retry mechanism on service tasks ?

5

my problem is resolved after setting up jobExecutorDeploymentAware property

false

source: Service Task with Async Continuation Never Executes - #12 by Stephen_Bucholtz

Thank you guys.

6