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https://issues.apache.org/jira/browse/UIMA-1797?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Marshall Schor updated UIMA-1797:
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Fix Version/s: 2.3.1AS
> UIMA AS processParentLast logic is not working correctly
> --------------------------------------------------------
>
> Key: UIMA-1797
> URL: https://issues.apache.org/jira/browse/UIMA-1797
> Project: UIMA
> Issue Type: Bug
> Components: Async Scaleout
> Affects Versions: 2.3AS
> Reporter: Jerry Cwiklik
> Assignee: Jerry Cwiklik
> Fix For: 2.3.1AS
>
>
> UIMA AS aggregate fails with NPE when using multiple CMs configured with
> processParentLast=true. The aggregate throws this:
> java.lang.NullPointerException
> at
> org.apache.uima.aae.controller.AggregateAnalysisEngineController_impl.forceToDropTheCas(AggregateAnalysisEngineController_impl.java:1822)
> at
> org.apache.uima.aae.controller.AggregateAnalysisEngineController_impl.finalStep(AggregateAnalysisEngineController_impl.java:1624)
> at
> org.apache.uima.aae.controller.AggregateAnalysisEngineController_impl.finalStep(AggregateAnalysisEngineController_impl.java:1714)
> at
> org.apache.uima.aae.controller.AggregateAnalysisEngineController_impl.executeFlowStep(AggregateAnalysisEngineController_impl.java:2175)
> at
> org.apache.uima.aae.controller.AggregateAnalysisEngineController_impl.process(AggregateAnalysisEngineController_impl.java:1207)
> at
> org.apache.uima.aae.handler.HandlerBase.invokeProcess(HandlerBase.java:118)
> at
> org.apache.uima.aae.handler.input.ProcessResponseHandler.cancelTimerAndProcess(ProcessResponseHandler.java:108)
> at
> org.apache.uima.aae.handler.input.ProcessResponseHandler.handleProcessResponseWithCASReference(ProcessResponseHandler.java:383)
> at
> org.apache.uima.aae.handler.input.ProcessResponseHandler.handle(ProcessResponseHandler.java:647)
> at
> org.apache.uima.aae.handler.HandlerBase.delegate(HandlerBase.java:149)
> at
> org.apache.uima.aae.handler.input.ProcessRequestHandler_impl.handle(ProcessRequestHandler_impl.java:989)
> at
> org.apache.uima.aae.spi.transport.vm.UimaVmMessageListener.onMessage(UimaVmMessageListener.java:107)
> at
> org.apache.uima.aae.spi.transport.vm.UimaVmMessageDispatcher$1.run(UimaVmMessageDispatcher.java:70)
> at
> java.util.concurrent.ThreadPoolExecutor$Worker.runTask(ThreadPoolExecutor.java:886)
> at
> java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:908)
> at java.lang.Thread.run(Thread.java:619)
> It does not matter if CMs are colocated or remote. If there is more than one
> CM with processParentLast=true, the code fails as above. The failure seems to
> occur while processing parent of the last child CAS.
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