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</o:shapelayout></xml><![endif]--></head><body lang=EN-US link=blue vlink=purple><div class=WordSection1><p class=MsoNormal>I have been trying to upgrade our application to Drools 5.5 from Drools 5.4. I rebuilt several knowledgeBases containing processes with Drools 5.5, but I can’t get them to run. I can get a simple DRL file that does not reference any processes to run just fine. Both the DRL and the KBs use statelessSessions. The program has been used for a couple years, and has been modified to run with Drools 5.1.1, 5.3, 5.4, and now 5.5, and has been supporting processes since Drools 5.3 / jBPM 5.2.<o:p></o:p></p><p class=MsoNormal><o:p> </o:p></p><p class=MsoNormal>Here is the bomb that I get:<o:p></o:p></p><p class=MsoNormal><o:p> </o:p></p><p class=MsoNormal style='text-autospace:none'><span style='font-size:10.0pt;font-family:"Courier New";color:black'>OpenCDS call to Drools.execute failed with error: Unexpected exception executing action org.jbpm.process.instance.event.DefaultSignalManager$SignalAction@5cd5a2a9</span><span style='font-size:10.0pt;font-family:"Courier New"'><o:p></o:p></span></p><p class=MsoNormal style='text-autospace:none'><span style='font-size:10.0pt;font-family:"Courier New";color:black'>org.drools.common.AbstractWorkingMemory:executeQueuedActions:995</span><span style='font-size:10.0pt;font-family:"Courier New"'><o:p></o:p></span></p><p class=MsoNormal style='text-autospace:none'><span style='font-size:10.0pt;font-family:"Courier New";color:black'>org.drools.common.DefaultAgenda:fireNextItem:1239</span><span style='font-size:10.0pt;font-family:"Courier New"'><o:p></o:p></span></p><p class=MsoNormal style='text-autospace:none'><span style='font-size:10.0pt;font-family:"Courier New";color:black'>org.drools.common.DefaultAgenda:fireAllRules:1456</span><span style='font-size:10.0pt;font-family:"Courier New"'><o:p></o:p></span></p><p class=MsoNormal style='text-autospace:none'><span style='font-size:10.0pt;font-family:"Courier New";color:black'>org.drools.common.AbstractWorkingMemory:fireAllRules:710</span><span style='font-size:10.0pt;font-family:"Courier New"'><o:p></o:p></span></p><p class=MsoNormal style='text-autospace:none'><span style='font-size:10.0pt;font-family:"Courier New";color:black'>org.drools.common.AbstractWorkingMemory:fireAllRules:674</span><span style='font-size:10.0pt;font-family:"Courier New"'><o:p></o:p></span></p><p class=MsoNormal style='text-autospace:none'><span style='font-size:10.0pt;font-family:"Courier New";color:black'>org.drools.impl.StatefulKnowledgeSessionImpl:fireAllRules:230</span><span style='font-size:10.0pt;font-family:"Courier New"'><o:p></o:p></span></p><p class=MsoNormal style='text-autospace:none'><span style='font-size:10.0pt;font-family:"Courier New";color:black'>org.drools.impl.StatelessKnowledgeSessionImpl:execute:278</span><span style='font-size:10.0pt;font-family:"Courier New"'><o:p></o:p></span></p><p class=MsoNormal style='text-autospace:none'><span style='font-size:10.0pt;font-family:"Courier New";color:black'>org.opencds.service.drools.v55.DroolsAdapter:getOneResponse:370</span><span style='font-size:10.0pt;font-family:"Courier New"'><o:p></o:p></span></p><p class=MsoNormal style='text-autospace:none'><span style='font-size:10.0pt;font-family:"Courier New";color:black'>org.opencds.dss.evaluate.EvaluationImpl:evaluate:169</span><span style='font-size:10.0pt;font-family:"Courier New"'><o:p></o:p></span></p><p class=MsoNormal><span style='font-size:10.0pt;font-family:"Courier New";color:black'>org.opencds.service.TestEvaluationImpl:main:156<o:p></o:p></span></p><p class=MsoNormal style='text-autospace:none'><span style='font-size:10.0pt;font-family:"Courier New";color:red'>org.omg.dss.DSSRuntimeExceptionFault: OpenCDS call to Drools.execute failed with error: Unexpected exception executing action org.jbpm.process.instance.event.DefaultSignalManager$SignalAction@5cd5a2a9</span><span style='font-size:10.0pt;font-family:"Courier New"'><o:p></o:p></span></p><p class=MsoNormal style='text-autospace:none'><span style='font-size:10.0pt;font-family:"Courier New";color:red'>executeQueuedActions</span><span style='font-size:10.0pt;font-family:"Courier New"'><o:p></o:p></span></p><p class=MsoNormal style='text-autospace:none'><span style='font-size:10.0pt;font-family:"Courier New";color:red'>fireNextItem</span><span style='font-size:10.0pt;font-family:"Courier New"'><o:p></o:p></span></p><p class=MsoNormal style='text-autospace:none'><span style='font-size:10.0pt;font-family:"Courier New";color:red'>fireAllRules</span><span style='font-size:10.0pt;font-family:"Courier New"'><o:p></o:p></span></p><p class=MsoNormal style='text-autospace:none'><span style='font-size:10.0pt;font-family:"Courier New";color:red'>fireAllRules</span><span style='font-size:10.0pt;font-family:"Courier New"'><o:p></o:p></span></p><p class=MsoNormal style='text-autospace:none'><span style='font-size:10.0pt;font-family:"Courier New";color:red'>fireAllRules</span><span style='font-size:10.0pt;font-family:"Courier New"'><o:p></o:p></span></p><p class=MsoNormal style='text-autospace:none'><span style='font-size:10.0pt;font-family:"Courier New";color:red'>fireAllRules</span><span style='font-size:10.0pt;font-family:"Courier New"'><o:p></o:p></span></p><p class=MsoNormal style='text-autospace:none'><span style='font-size:10.0pt;font-family:"Courier New";color:red'>execute</span><span style='font-size:10.0pt;font-family:"Courier New"'><o:p></o:p></span></p><p class=MsoNormal style='text-autospace:none'><span style='font-size:10.0pt;font-family:"Courier New";color:red'>getOneResponse</span><span style='font-size:10.0pt;font-family:"Courier New"'><o:p></o:p></span></p><p class=MsoNormal style='text-autospace:none'><span style='font-size:10.0pt;font-family:"Courier New";color:red'>evaluate</span><span style='font-size:10.0pt;font-family:"Courier New"'><o:p></o:p></span></p><p class=MsoNormal><span style='font-size:10.0pt;font-family:"Courier New";color:red'>main<o:p></o:p></span></p><p class=MsoNormal><span style='font-size:10.0pt;font-family:"Courier New";color:black'><o:p> </o:p></span></p><p class=MsoNormal><span style='font-size:10.0pt;font-family:"Courier New";color:black'>I have single-stepped through the code with Eclipse, but I can’t quite figure out what is wrong with my KBs. They ran just fine on Drools 5.4 (although there was a memory leak in Drools with that version), and the only thing I changed was to populate the “probability” value on the BPMN-Diagram (because it wouldn’t validate without it).<o:p></o:p></span></p><p class=MsoNormal><span style='font-size:10.0pt;font-family:"Courier New";color:black'><o:p> </o:p></span></p><p class=MsoNormal><span style='font-size:10.0pt;font-family:"Courier New";color:black'>The program builds a command list, and executes it with the following:<o:p></o:p></span></p><p class=MsoNormal><span style='font-size:10.0pt;font-family:"Courier New";color:black'><o:p> </o:p></span></p><p class=MsoNormal style='text-autospace:none'><span style='font-size:10.0pt;font-family:"Courier New";color:black'> ExecutionResults results = </span><b><span style='font-size:10.0pt;font-family:"Courier New";color:#7F0055'>null</span></b><span style='font-size:10.0pt;font-family:"Courier New";color:black'>;</span><span style='font-size:10.0pt;font-family:"Courier New"'><o:p></o:p></span></p><p class=MsoNormal style='text-autospace:none'><span style='font-size:10.0pt;font-family:"Courier New";color:black'> </span><b><span style='font-size:10.0pt;font-family:"Courier New";color:#7F0055'>try</span></b><span style='font-size:10.0pt;font-family:"Courier New";color:black'> {</span><span style='font-size:10.0pt;font-family:"Courier New"'><o:p></o:p></span></p><p class=MsoNormal style='text-autospace:none'><span style='font-size:10.0pt;font-family:"Courier New";color:black'> </span><span style='font-size:10.0pt;font-family:"Courier New"'><o:p></o:p></span></p><p class=MsoNormal style='text-autospace:none'><span style='font-size:10.0pt;font-family:"Courier New";color:black'> results = statelessKnowledgeSession.execute(CommandFactory.<i>newBatchExecution</i>((cmds))); </span><span style='font-size:10.0pt;font-family:"Courier New"'><o:p></o:p></span></p><p class=MsoNormal style='text-autospace:none'><span style='font-size:10.0pt;font-family:"Courier New";color:black'> </span><span style='font-size:10.0pt;font-family:"Courier New"'><o:p></o:p></span></p><p class=MsoNormal style='text-autospace:none'><span style='font-size:10.0pt;font-family:"Courier New";color:black'> } </span><b><span style='font-size:10.0pt;font-family:"Courier New";color:#7F0055'>catch</span></b><span style='font-size:10.0pt;font-family:"Courier New";color:black'> (Exception e) {</span><span style='font-size:10.0pt;font-family:"Courier New"'><o:p></o:p></span></p><p class=MsoNormal style='text-autospace:none'><span style='font-size:10.0pt;font-family:"Courier New";color:black'> String err = </span><span style='font-size:10.0pt;font-family:"Courier New";color:#2A00FF'>"OpenCDS call to Drools.execute failed with error: "</span><span style='font-size:10.0pt;font-family:"Courier New";color:black'> + e.getMessage();</span><span style='font-size:10.0pt;font-family:"Courier New"'><o:p></o:p></span></p><p class=MsoNormal style='text-autospace:none'><span style='font-size:10.0pt;font-family:"Courier New";color:black'> </span><i><span style='font-size:10.0pt;font-family:"Courier New";color:#0000C0'>log</span></i><span style='font-size:10.0pt;font-family:"Courier New";color:black'>.error(err);</span><span style='font-size:10.0pt;font-family:"Courier New"'><o:p></o:p></span></p><p class=MsoNormal style='text-autospace:none'><span style='font-size:10.0pt;font-family:"Courier New";color:black'> StackTraceElement elements[] = e.getStackTrace();</span><span style='font-size:10.0pt;font-family:"Courier New"'><o:p></o:p></span></p><p class=MsoNormal style='text-autospace:none'><span style='font-size:10.0pt;font-family:"Courier New";color:black'> </span><b><span style='font-size:10.0pt;font-family:"Courier New";color:#7F0055'>for</span></b><span style='font-size:10.0pt;font-family:"Courier New";color:black'> (</span><b><span style='font-size:10.0pt;font-family:"Courier New";color:#7F0055'>int</span></b><span style='font-size:10.0pt;font-family:"Courier New";color:black'> i = 0, n = elements.</span><span style='font-size:10.0pt;font-family:"Courier New";color:#0000C0'>length</span><span style='font-size:10.0pt;font-family:"Courier New";color:black'>; i < n; i++) {</span><span style='font-size:10.0pt;font-family:"Courier New"'><o:p></o:p></span></p><p class=MsoNormal style='text-autospace:none'><span style='font-size:10.0pt;font-family:"Courier New";color:black'> String detail = elements[i].getClassName() + </span><span style='font-size:10.0pt;font-family:"Courier New";color:#2A00FF'>":"</span><span style='font-size:10.0pt;font-family:"Courier New";color:black'> + elements[i].getMethodName() + </span><span style='font-size:10.0pt;font-family:"Courier New";color:#2A00FF'>":"</span><span style='font-size:10.0pt;font-family:"Courier New";color:black'> + elements[i].getLineNumber();</span><span style='font-size:10.0pt;font-family:"Courier New"'><o:p></o:p></span></p><p class=MsoNormal style='text-autospace:none'><span style='font-size:10.0pt;font-family:"Courier New";color:black'> </span><i><span style='font-size:10.0pt;font-family:"Courier New";color:#0000C0'>log</span></i><span style='font-size:10.0pt;font-family:"Courier New";color:black'>.error(detail);</span><span style='font-size:10.0pt;font-family:"Courier New"'><o:p></o:p></span></p><p class=MsoNormal style='text-autospace:none'><span style='font-size:10.0pt;font-family:"Courier New";color:black'> err += </span><span style='font-size:10.0pt;font-family:"Courier New";color:#2A00FF'>"\n"</span><span style='font-size:10.0pt;font-family:"Courier New";color:black'> + elements[i].getMethodName();</span><span style='font-size:10.0pt;font-family:"Courier New"'><o:p></o:p></span></p><p class=MsoNormal style='text-autospace:none'><span style='font-size:10.0pt;font-family:"Courier New";color:black'> }</span><span style='font-size:10.0pt;font-family:"Courier New"'><o:p></o:p></span></p><p class=MsoNormal style='text-autospace:none'><span style='font-size:10.0pt;font-family:"Courier New";color:black'> </span><b><span style='font-size:10.0pt;font-family:"Courier New";color:#7F0055'>throw</span></b><span style='font-size:10.0pt;font-family:"Courier New";color:black'> </span><b><span style='font-size:10.0pt;font-family:"Courier New";color:#7F0055'>new</span></b><span style='font-size:10.0pt;font-family:"Courier New";color:black'> DSSRuntimeExceptionFault(err);</span><span style='font-size:10.0pt;font-family:"Courier New"'><o:p></o:p></span></p><p class=MsoNormal style='text-autospace:none'><span style='font-size:10.0pt;font-family:"Courier New";color:black'> }</span><span style='font-size:10.0pt;font-family:"Courier New"'><o:p></o:p></span></p><p class=MsoNormal><o:p> </o:p></p><p class=MsoNormal>Has anybody seen this error before?<o:p></o:p></p><p class=MsoNormal><o:p> </o:p></p><p class=MsoNormal>Thanks for any ideas or suggestions!<o:p></o:p></p><p class=MsoNormal><o:p> </o:p></p><p class=MsoNormal>-- des<o:p></o:p></p></div></body></html>