topic Re: Enhance Async Task Executor in Alfresco Forum

Enhance Async Task Executor

guillame_grisel — Sat, 14 Oct 2017 10:38:40 GMT

Hello,I have noticed that the async task executor can be enhanced by removing some thread sleep in class like AcquireAsyncJobsDueRunnable or AcquireTimerJobsRunnable.I have already submit this enhancement some times ago (activiti version 5.0.17.), I use to test with the protocol described in this po

Re: Enhance Async Task Executor

salaboy — Mon, 16 Oct 2017 07:14:41 GMT

Hi Guillaume,

Are you using 7-201709-EA ?

What kind of of issues are you having when unacquiring job ?

Can you please provide a reproducer?

Re: Enhance Async Task Executor

guillame_grisel — Mon, 16 Oct 2017 17:50:04 GMT

HI,

Yes I Use the 7-201709-EA.

You can download my project sample : GitHub - gggrittt/activiti-async-executor-failure

May be there is an incompatibilty between activiti 5 bpmn and 7.

Re: Enhance Async Task Executor

salaboy — Tue, 17 Oct 2017 15:17:01 GMT

Hi Guillaume,

I appreciate the project, but unless you explain what are you trying to achieve with that, I will need to spend some time to understand your test, that contains a main class instead of assertions, so it is pretty time consume to understand what is doing.

There might be an incompatibility, so let's try to find out what it is.

Can you please explain a little bit of the context of what you are trying to achieve?

Are you trying to benchmark the job executor?

because in my experience and as part of Activiti Cloud, we are going to delegate those responsibilities to production ready components. It might be a good time, if you are looking at the EA of 7 you might want to look at RFC: Activiti Cloud Connectors – Salaboy (Open Source Knowledge)

It is a very good time to get involved and shape the future of the project, so if you are interested get in touch.

Re: Enhance Async Task Executor

salaboy — Tue, 17 Oct 2017 15:32:16 GMT

I've tried your example with 6.0.0 and it shows the same issue, so there might be something fundamentally wrong with the way that the test is executing jobs and executing them. Did you manage to get it working with 6.0.0?

Regards

Re: Enhance Async Task Executor

guillame_grisel — Thu, 19 Oct 2017 05:16:24 GMT

Hello,

No problem, don't invest time in obsolete version !

I read your all blog posts with attention, I'm really impressed by the recent improvements and progress on Activiti 7.

Concerning my enhancement, I thought it's a bad idea to instantiate threads to retrieve jobs to treats and expired jobs (timerJobAcquisitionThread,asyncJobAcquisitionThread & asyncJobAcquisitionThread). It will be better to use a java.util.concurrent.ScheduledExecutorService or org.springframework.scheduling.TaskScheduler.

I'll provide a sample soon.

Re: Enhance Async Task Executor

salaboy — Thu, 19 Oct 2017 08:14:21 GMT

That sounds great!

Re: Enhance Async Task Executor

guillame_grisel — Sun, 22 Oct 2017 18:08:15 GMT

Here it is : GitHub - gggrittt/activiti-scheduled-jobs-acquisition

I basically just replace the Thread.sleep in *runnable by a scheduled execution with the help of java.util.concurrent.ScheduledExecutorService.

Spring implementation can be easily derived.

It is not a big improvement, but I hope it is useful.

Concerning my initial issue, it has already been reported

postgres

NPE - JobEntityManagerImpl.delete(JobEntityManagerImpl.java:35) ~[activiti-engine-6.0.0.jar!/:6.0.0

Re: Enhance Async Task Executor

lovik — Mon, 21 May 2018 10:49:39 GMT

Hi,

Have you got a solution for the NPE- JobEntityImpl.delete issue?

I am unable to find any help on that issue.