[jboss-user] [jBPM] New message: "JBPM subprocesses stuck on inactive-join"

[Michal Koziol]

User development,

A new message was posted in the thread "JBPM subprocesses stuck on inactive-join":

http://community.jboss.org/message/528279#528279

Author  : Michal Koziol
Profile : http://community.jboss.org/people/mkoziol

Message:
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Hi all,
We have come across a strange problem with our jbpm process. It contains a fork and a join at the end. Both branches execute some subprocesses and when they finish, they meet in a join. Usually after the join, the main execution finishes, but sometimes (very very rarely - total of 3 cases) the processes wait in the join and the main execution never finishes.
What we can see in the database in the "jbpm4_execution" table, is that the main process is in an "inactive-concurrent-root" state and the two subprocesses are in the "inactive-join" state.
Has anybody seen something like that? We are just curious if we are doing something wrong or is it a rare bug?
There is a workaround for that, just do this:
 
+executionService.endProcessInstance(pid, state)+
 
but we would rather not see it in the database at all.
Any help would be appreciated.
 
We are using JBPM v4.1,
Here is our jbpm process in xml:
 
<?xml version="1.0" encoding="UTF-8"?>
 
<process name="proc1" xmlns="http://jbpm.org/4.0/jpdl">
 
    <start g="246,25,48,48" name="start">
        <transition g="-68,-18" name="to validation" to="validation"/>
    </start>
    
    <decision g="245,115,48,48" name="validation">
        <handler class="x.validation.ValidationParameters" />
        <transition g="-48,-18" name="error" to="error"/>
        <transition g="-50,-6" name="to fork" to="fork"/>
    </decision>
 
    <end-error g="60,115,48,48" name="error"/>
    
    <fork g="244,194,48,48" name="fork">
        <on event="end" continue="exclusive">
        </on>
        <transition g="3,-18" name="to create cases" to="create cases"/>
        <transition g="-72,-18" name="to search bets" to="search bets"/>
    </fork>
 
    <sub-process g="127,278,92,52" name="search bets" outcome="${result.outcome}" sub-process-key="SearchBets">
        <parameter-in expr="${owner}" subvar="owner"/>
        <parameter-in expr="${eventId}" subvar="eventId"/>
        <parameter-in expr="${timestamp}" subvar="timestamp"/>
        <parameter-out subvar="result" var="searchBetsResult"/>
        <transition g="-35,-18" name="to join" to="join"/>
    </sub-process>
 
    <sub-process g="302,280,92,52" name="create cases" sub-process-key="CreateCases">
        <parameter-in expr="${owner}" subvar="owner"/>
        <parameter-in expr="${eventId}" subvar="eventId"/>
        <parameter-in expr="${timestamp}" subvar="timestamp"/>
        <parameter-in expr="${ticket}" subvar="ticket"/>
        <parameter-in expr="${roleList}" subvar="roleList"/>        
        <transition g="11,-14" name="to join" to="join"/>
    </sub-process>
    
    <join g="235,386,48,48" multiplicity="2" name="join">
      <transition name="to decision" to="decision" g="-56,-18"/>
    </join>
    
    <end g="239,567,48,48" name="end"/>
   <end-error name="errorproc1" g="107,486,48,48"/>
   <decision name="decision" g="237,483,48,48">
   <handler class="x.validation.ValidationEndProcess" />
      <transition name="to errorproc1" to="errorproc1" g="-32,-14"/>
      <transition name="to end" to="end" g="-36,-18"/>
   </decision>
    
</process>

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