I investigated the cause, I found that Continuous execution of web services that stage of LogoinRequest is 0 may cause deadlock.
[How to reproduce]
Prerequisition : stage of LogoinRequest is 0.
*Step1: Web Service(A) call CompiereService#expungeIfExpire() method from CompiereService#disconnect() method . Then I think the method locked.
*Step2: Web Service(B) call CompiereService#get() method when login. Then I think the method locked csMap(static variable).
*Step3: Web Service(B) call CompiereService#expungeIfExpire() method from CompiereService#get() method. But I think it is locked at Step1 by Web Service(A) .
*Step4: Web Service(A) try to lock csMap. But I think it is locked at Step2 by Web Service(B) .
My customer use iDempiere ver9 met this dead lock some times. I confirmed reproduce at ver12 running from Eclipse development environment. After deadlock, Web service could not execution, and no response. We need reboot iDempiere for execute Web service.
Hi, I met deadlock at Web service.
I investigated the cause, I found that Continuous execution of web services that stage of LogoinRequest is 0 may cause deadlock.
[How to reproduce]
Prerequisition : stage of LogoinRequest is 0.
*Step1: Web Service(A) call CompiereService#expungeIfExpire() method from CompiereService#disconnect() method . Then I think the method locked.
*Step2: Web Service(B) call CompiereService#get() method when login. Then I think the method locked csMap(static variable).
*Step3: Web Service(B) call CompiereService#expungeIfExpire() method from CompiereService#get() method. But I think it is locked at Step1 by Web Service(A) .
*Step4: Web Service(A) try to lock csMap. But I think it is locked at Step2 by Web Service(B) .
My customer use iDempiere ver9 met this dead lock some times. I confirmed reproduce at ver12 running from Eclipse development environment. After deadlock, Web service could not execution, and no response. We need reboot iDempiere for execute Web service.
Attached mp4 movie at below mattermost.
https://mattermost.idempiere.org/idempiere/pl/pup5tyeu4ifbixwzjnxmw8such