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<a href="https://community.jboss.org/index.jspa" style="text-decoration: none; color: #E1E1E1">JBoss Community</a></h1>
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Intermittently pending human task come across a missing jbpm parent process in jBPM 5.2
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created by <a href="https://community.jboss.org/people/devinderpal">Dev S</a> in <i>jBPM</i> - <a href="https://community.jboss.org/message/752342#752342">View the full discussion</a>
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<div class="jive-rendered-content"><p>Env: Jboss 7.1.0, mysql DB, Redhat 5.5, jBPM 5.2</p><p style="min-height: 8pt; height: 8pt; padding: 0px;"> </p><p>When I thought I'm getting pretty good with jBPM and our application is about to be released, i came across this tough bug during extensive testing.</p><p>Intermittently we're facing that pending human task has missing parent process instance and it results in nullpointerexception while completing that human task.</p><p style="min-height: 8pt; height: 8pt; padding: 0px;"> </p><p>I ran below SQL query to confirm this:</p><p>select t.id, t.processInstanceId from Task t where t.processInstanceId not in (select distinct(InstanceId) from ProcessInstanceInfo);</p><p>+----+-------------------+</p><p>| id | processInstanceId |</p><p>+----+-------------------+</p><p>| 33 |                20 |</p><p>| 43 |                20 |</p><p>| 47 |                20 |</p><p>| 53 |                20 |</p><p>| 57 |                20 |</p><p>+----+-------------------+</p><p style="min-height: 8pt; height: 8pt; padding: 0px;"> </p><p>Same code works fine most of the time. So I think it's not problem with our code but some bug in jBPM. MinaTaskServer is being used for our implementation.</p><p>Also we use JTA persistence for jBPM core engine and RESOURCE_LOCAL for human task. We have to use RESOURCE_LOCAL for human task because JTA can't be used due to another jBPM bug.</p><p>If I reinitialize the database, then everything works fine for a while but again I run into this problem.</p><p style="min-height: 8pt; height: 8pt; padding: 0px;"> </p><p>Please let us know how we can fix it, if anyone knows solution. I was about to create a blocker JIRA issue but thought let's first get community opinion on this.</p><p>Exception stack trace is attached.</p></div>
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