topic Re: Potential Asynch Multi Instance Call Activity Bug in Alfresco Archive

Potential Asynch Multi Instance Call Activity Bug

rallen1 — Tue, 12 May 2015 00:56:46 GMT

Hello,I have noticed a potential bug or misunderstanding when spawning workflows. When an embedded subprocess spawns multiple workflows via call activity, and an initial task in the child workflow is set to Asynchronous, Activiti seems fail all children after the first one.I created a unit test demo

Re: Potential Asynch Multi Instance Call Activity Bug

martin_grofcik — Tue, 12 May 2015 06:23:09 GMT

Hi Rallen,

I have fixed your jUnit test. Here you can find project which is passing your test
https://github.com/martin-grofcik/activiti-unit-test-template/tree/rallen

Regards
Martin

Re: Potential Asynch Multi Instance Call Activity Bug

rallen1 — Tue, 12 May 2015 19:09:26 GMT

Hey Martin,

Thanks for the quick reply. I actually forgot to include my activiti-cfg file. My mistake may have actually demonstrated what might be the cause though, as my config file is using the AsyncExecutor over the JobExecutor, as recommended in the Activiti User Guide. My pom is also using Activiti Engine 5.17.0.

<code>
<?xml version="1.0" encoding="UTF-8"?>
<beans xmlns="http://www.springframework.org/schema/beans"
       xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
       xsi:schemaLocation="http://www.springframework.org/schema/beans   http://www.springframework.org/schema/beans/spring-beans.xsd">

<bean id="processEngineConfiguration"
class="org.activiti.engine.impl.cfg.StandaloneInMemProcessEngineConfiguration">>
    <property name="jdbcUrl" value="jdbc:h2:mem:activiti;DB_CLOSE_ON_EXIT=FALSE" />
    <property name="jdbcDriver" value="org.h2.Driver" />
    <property name="jdbcUsername" value="sa" />
    <property name="jdbcPassword" value="" />
    <property value="full" name="history" />
    <property name="asyncExecutorEnabled" value="true"/>
    <property name="asyncExecutorActivate" value="true"/>
</bean>
</beans>
</code>

Thanks for the help.

Re: Potential Asynch Multi Instance Call Activity Bug

rallen1 — Wed, 20 May 2015 20:06:36 GMT

Hello Martin,

I was wondering if there has been any update?

I have also been having some issues when putting activiti under a heavy load involving subprocesses. I am also observing different behaviour when using the async or job executor. The heavy load problem may require its own thread though depending on your thoughts here.

As always, thank you for any help.

Re: Potential Asynch Multi Instance Call Activity Bug

martin_grofcik — Thu, 21 May 2015 07:44:54 GMT

Hi Rallen,

Async executor behaves differently. I think that's a bug. The only question is how should it behave.
(@Tijs & @Joram have a look, please)

Regards
Martin

Re: Potential Asynch Multi Instance Call Activity Bug

martin_grofcik — Thu, 21 May 2015 12:51:52 GMT

It seems that there is an issue with MultiInstance loop.

Regards
Martin