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[jBPM4.4] process instance is in STATE_ASYNC
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created by <a href="http://community.jboss.org/people/jeeyi">Jee Yi</a> in <i>jBPM</i> - <a href="http://community.jboss.org/message/640693#640693">View the full discussion</a>
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<div class="jive-rendered-content"><p>Hi,</p><p style="min-height: 8pt; height: 8pt; padding: 0px;"> </p><p>I have defined a workflow so that it starts asynchronously.  And there is a custom activity that implements ExternalActivity.  In the execute method, I create Runnable object and submit to a custom thread pool, and then call execution.waitForSignal().  The new thread runs its own tasks and signals the execution in "work".</p><p style="min-height: 8pt; height: 8pt; padding: 0px;"> </p><p>In the new thread, where it looks for the active execution in "work" sometimes throws an exception:</p><p><span class="pygments-n">Execution</span><span class="pygments-"> </span><span class="pygments-n">execution</span><span class="pygments-"> </span><span class="pygments-o" style="color: #666666;">=</span><span class="pygments-"> </span><span class="pygments-n">processInstance</span><span class="pygments-o" style="color: #666666;">.</span><span class="pygments-na" style="color: #7d9029;">findActiveExecutionIn</span><span class="pygments-o" style="color: #666666;">(</span><span class="pygments-s" style="color: #ba2121;">"work"</span><span class="pygments-o" style="color: #666666;">);</span></p><p style="min-height: 8pt; height: 8pt; padding: 0px;"> </p><p>The reason is because the state of the process instance is STATE_ASYNC and not STATE_ACTIVE_ROOT.  Does anyone know why?</p><p style="min-height: 8pt; height: 8pt; padding: 0px;"> </p><p>This is web application and we start multiple process instances concurrently.  We are using jBPM JobExecutor with default configuration.  When I start about 10 process instances, I see one or two process instances failed to move on to the next activity because we were not able to signal the execution. </p><p style="min-height: 8pt; height: 8pt; padding: 0px;"> </p><p>1) Does anyone know what's going wrong here?</p><p>2) Any suggestion how to make process instance move from STATE_ASYNC to STATE_ACTIVE_ROOT?</p><p>3) Or is there a way to signal process instance in STATE_ASYNC?</p><p style="min-height: 8pt; height: 8pt; padding: 0px;"> </p><p style="min-height: 8pt; height: 8pt; padding: 0px;"> </p><p style="min-height: 8pt; height: 8pt; padding: 0px;"> </p><table cellpadding="0" cellspacing="0" style="color: #000000; font-family: sans-serif; font-size: medium; border-style: none;"><tbody><tr class="vc_row_odd" id="l5" style="background-color: #f0f0f0;"><td class="vc_file_line_number" style="border-style: none;padding-left: 5px;padding-bottom: 1px;padding-right: 5px;padding-top: 1px;font-style: normal;font-weight: normal;border-right-color: #505050;border-right-style: solid;text-align: right;color: #505050;background-color: #eeeeee;border-right-width: 1px;"><a class="jive-link-anchor-small" name="5">5</a></td><td class="vc_file_line_text" style="border-style: none;padding-left: 5px;padding-bottom: 1px;padding-right: 5px;padding-top: 1px;font-style: normal;font-weight: normal;border-right-color: #505050;border-right-style: solid;text-align: left;font-family: monospace;background-color: white;"><span class="pygments-">    </span><span class="pygments-nt" style="color: #008000; font-weight: bold;"><start</span><span class="pygments-"> </span><span class="pygments-na" style="color: #7d9029;">name=</span><span class="pygments-s" style="color: #ba2121;">"async-start"</span><span class="pygments-"> </span><span class="pygments-na" style="color: #7d9029;">continue=</span><span class="pygments-s" style="color: #ba2121;">"async"</span><span class="pygments-"> </span><span class="pygments-nt" style="color: #008000; font-weight: bold;">></span><span class="pygments-"></span> </td></tr><tr class="vc_row_odd" id="l6" style="background-color: #f0f0f0;"><td class="vc_file_line_number" style="border-style: none;padding-left: 5px;padding-bottom: 1px;padding-right: 5px;padding-top: 1px;font-style: normal;font-weight: normal;border-right-color: #505050;border-right-style: solid;text-align: right;color: #505050;background-color: #eeeeee;border-right-width: 1px;"><a class="jive-link-anchor-small" name="6">6</a></td><td class="vc_file_line_text" style="border-style: none;padding-left: 5px;padding-bottom: 1px;padding-right: 5px;padding-top: 1px;font-style: normal;font-weight: normal;border-right-color: #505050;border-right-style: solid;text-align: left;font-family: monospace;background-color: white;"><span class="pygments-">        </span><span class="pygments-nt" style="color: #008000; font-weight: bold;"><transition</span><span class="pygments-"> </span><span class="pygments-na" style="color: #7d9029;">to=</span><span class="pygments-s" style="color: #ba2121;">"work"</span><span class="pygments-nt" style="color: #008000; font-weight: bold;">/></span><span class="pygments-"></span> </td></tr><tr class="vc_row_odd" id="l7" style="background-color: #f0f0f0;"><td class="vc_file_line_number" style="border-style: none;padding-left: 5px;padding-bottom: 1px;padding-right: 5px;padding-top: 1px;font-style: normal;font-weight: normal;border-right-color: #505050;border-right-style: solid;text-align: right;color: #505050;background-color: #eeeeee;border-right-width: 1px;"><a class="jive-link-anchor-small" name="7">7</a></td><td class="vc_file_line_text" style="border-style: none;padding-left: 5px;padding-bottom: 1px;padding-right: 5px;padding-top: 1px;font-style: normal;font-weight: normal;border-right-color: #505050;border-right-style: solid;text-align: left;font-family: monospace;background-color: white;"><span class="pygments-">    </span><span class="pygments-nt" style="color: #008000; font-weight: bold;"></start></span><span class="pygments-"></span> </td></tr><tr class="vc_row_odd" id="l8" style="background-color: #f0f0f0;"><td class="vc_file_line_number" style="border-style: none;padding-left: 5px;padding-bottom: 1px;padding-right: 5px;padding-top: 1px;font-style: normal;font-weight: normal;border-right-color: #505050;border-right-style: solid;text-align: right;color: #505050;background-color: #eeeeee;border-right-width: 1px;"><a class="jive-link-anchor-small" name="8">8</a></td><td class="vc_file_line_text" style="border-style: none;padding-left: 5px;padding-bottom: 1px;padding-right: 5px;padding-top: 1px;font-style: normal;font-weight: normal;border-right-color: #505050;border-right-style: solid;text-align: left;font-family: monospace;background-color: white;"><span class="pygments-">    </span> </td></tr><tr class="vc_row_odd" id="l9" style="background-color: #f0f0f0;"><td class="vc_file_line_number" style="border-style: none;padding-left: 5px;padding-bottom: 1px;padding-right: 5px;padding-top: 1px;font-style: normal;font-weight: normal;border-right-color: #505050;border-right-style: solid;text-align: right;color: #505050;background-color: #eeeeee;border-right-width: 1px;"><a class="jive-link-anchor-small" name="9">9</a></td><td class="vc_file_line_text" style="border-style: none;padding-left: 5px;padding-bottom: 1px;padding-right: 5px;padding-top: 1px;font-style: normal;font-weight: normal;border-right-color: #505050;border-right-style: solid;text-align: left;font-family: monospace;background-color: white;"><span class="pygments-">    </span><span class="pygments-nt" style="color: #008000; font-weight: bold;"><custom</span><span class="pygments-"> </span><span class="pygments-na" style="color: #7d9029;">name=</span><span class="pygments-s" style="color: #ba2121;">"work"</span><span class="pygments-"> </span><span class="pygments-na" style="color: #7d9029;">expr=</span><span class="pygments-s" style="color: #ba2121;">"#{startWorkAndWait}"</span><span class="pygments-"> </span><span class="pygments-nt" style="color: #008000; font-weight: bold;">></span><span class="pygments-">             </span> </td></tr><tr class="vc_row_odd" id="l10" style="background-color: #f0f0f0;"><td class="vc_file_line_number" style="border-style: none;padding-left: 5px;padding-bottom: 1px;padding-right: 5px;padding-top: 1px;font-style: normal;font-weight: normal;border-right-color: #505050;border-right-style: solid;text-align: right;color: #505050;background-color: #eeeeee;border-right-width: 1px;"><a class="jive-link-anchor-small" name="10">10</a></td><td class="vc_file_line_text" style="border-style: none;padding-left: 5px;padding-bottom: 1px;padding-right: 5px;padding-top: 1px;font-style: normal;font-weight: normal;border-right-color: #505050;border-right-style: solid;text-align: left;font-family: monospace;background-color: white;"><span class="pygments-">        </span><span class="pygments-nt" style="color: #008000; font-weight: bold;"><transition</span><span class="pygments-"> </span><span class="pygments-na" style="color: #7d9029;">name=</span><span class="pygments-s" style="color: #ba2121;">"ok"</span><span class="pygments-"> </span><span class="pygments-na" style="color: #7d9029;">to=</span><span class="pygments-s" style="color: #ba2121;">"send mail"</span><span class="pygments-"> </span><span class="pygments-nt" style="color: #008000; font-weight: bold;">/></span><span class="pygments-">  </span> </td></tr><tr class="vc_row_odd" id="l11" style="background-color: #f0f0f0;"><td class="vc_file_line_number" style="border-style: none;padding-left: 5px;padding-bottom: 1px;padding-right: 5px;padding-top: 1px;font-style: normal;font-weight: normal;border-right-color: #505050;border-right-style: solid;text-align: right;color: #505050;background-color: #eeeeee;border-right-width: 1px;"><a class="jive-link-anchor-small" name="11">11</a></td><td class="vc_file_line_text" style="border-style: none;padding-left: 5px;padding-bottom: 1px;padding-right: 5px;padding-top: 1px;font-style: normal;font-weight: normal;border-right-color: #505050;border-right-style: solid;text-align: left;font-family: monospace;background-color: white;"><span class="pygments-">        </span><span class="pygments-nt" style="color: #008000; font-weight: bold;"><transition</span><span class="pygments-"> </span><span class="pygments-na" style="color: #7d9029;">name=</span><span class="pygments-s" style="color: #ba2121;">"error"</span><span class="pygments-"> </span><span class="pygments-na" style="color: #7d9029;">to=</span><span class="pygments-s" style="color: #ba2121;">"send error mail"</span><span class="pygments-"> </span><span class="pygments-nt" style="color: #008000; font-weight: bold;">/></span><span class="pygments-">  </span> </td></tr><tr class="vc_row_odd" id="l12" style="background-color: #f0f0f0;"><td class="vc_file_line_number" style="border-style: none;padding-left: 5px;padding-bottom: 1px;padding-right: 5px;padding-top: 1px;font-style: normal;font-weight: normal;border-right-color: #505050;border-right-style: solid;text-align: right;color: #505050;background-color: #eeeeee;border-right-width: 1px;"><a class="jive-link-anchor-small" name="12">12</a></td><td class="vc_file_line_text" style="border-style: none;padding-left: 5px;padding-bottom: 1px;padding-right: 5px;padding-top: 1px;font-style: normal;font-weight: normal;border-right-color: #505050;border-right-style: solid;text-align: left;font-family: monospace;background-color: white;"><span class="pygments-"><p><span class="pygments-">    </span><span class="pygments-nt" style="color: #008000; font-weight: bold;"></custom></span><span class="pygments-"> </span> </p></span></td></tr><tr class="vc_row_odd" id="l13" style="background-color: #f0f0f0;"><td class="vc_file_line_number" style="border-style: none;padding-left: 5px;padding-bottom: 1px;padding-right: 5px;padding-top: 1px;font-style: normal;font-weight: normal;border-right-color: #505050;border-right-style: solid;text-align: right;color: #505050;background-color: #eeeeee;border-right-width: 1px;"><a class="jive-link-anchor-small" name="13">1</a></td><td class="vc_file_line_text" style="border-style: none;padding-left: 5px;padding-bottom: 1px;padding-right: 5px;padding-top: 1px;font-style: normal;font-weight: normal;border-right-color: #505050;border-right-style: solid;text-align: left;font-family: monospace;background-color: white;"><br/></td></tr></tbody></table><p style="min-height: 8pt; height: 8pt; padding: 0px;"> </p><p style="min-height: 8pt; height: 8pt; padding: 0px;"> </p><p><a class="jive-link-anchor-small">public <span class="bold"><strong>class StartWorkAndWait</strong></span> implements <span class="bold"><strong>ExternalActivity</strong></span> {<br/><br/>  public void execute(ActivityExecution execution) {</a></p><p style="min-height: 8pt; height: 8pt; padding: 0px;"> </p><p>    // created Runnable and submitted to a custom ThreadPool</p><p><a class="jive-link-anchor-small"><br/>    <span class="bold"><strong>execution.waitForSignal();</strong></span><br/>  }<br/><br/>  public void signal(ActivityExecution execution, <br/>                     String signalName, <br/>                     Map<String, Object> parameters) {<br/>    <span class="bold"><strong>execution.take(signalName);</strong></span><br/>  }<br/>}</a></p><p style="min-height: 8pt; height: 8pt; padding: 0px;"> </p><p>Thanks,</p><p>Jee</p></div>
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