[jira] [Commented] (OFBIZ-13153) "null DispatchContext" issue under high load and concurrency

["Nicolas Malin (Jira)" <ji...@apache.org>]

    [ https://issues.apache.org/jira/browse/OFBIZ-13153?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=18035563#comment-18035563 ] 

Nicolas Malin commented on OFBIZ-13153:
---------------------------------------

I raise up this ticket because during my test with java 21, I have this error randomly during execution test. When I run testIntegration, nine on ten failed. (So I waste my time to rerun again and again to pass through)

The problem seem to be provided from the initialisation of the dispatcher that isn't thread safe. I saw the registration execute on the same class on two different threat. 

With the linked patch this issue leave. I supposed with the threading improvement of java 21 and the multiple threading on linux some collision appears now. 

From my side I'm a pop-os linux with adm cpu 16 core. This isn't not appears on our virtual server with less core dedicated 

> "null DispatchContext" issue under high load and concurrency
> ------------------------------------------------------------
>
>                 Key: OFBIZ-13153
>                 URL: https://issues.apache.org/jira/browse/OFBIZ-13153
>             Project: OFBiz
>          Issue Type: Bug
>          Components: framework/service
>    Affects Versions: 18.12.16
>         Environment: Virtual Machine:
> OS: RHEL 8.9
> VCPU: 16
> Total RAM: 64 GB
> Heap allocation (Xmx): 8 GB
>            Reporter: Mayank S
>            Assignee: Nicolas Malin
>            Priority: Major
>              Labels: performance
>         Attachments: OFBIZ-13153.patch
>
>   Original Estimate: 24h
>  Remaining Estimate: 24h
>
> While performance-testing Ofbiz 18 under high load (200 concurrent users), we have observed an intermittent error, stating "null DispatchContext".
> While doing more analysis, we realized it is a thread-safety issue, and it was fixed by adding the 'synchronized' keyword to the following method signatures in ServiceDispatcher.java:
> public static synchronized getInstance (Delegator delegator) 
> public static synchronized void register (DispatchContext context)



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