The line throwing the null pointer exception is : cas.getView(sofaNum).getSofaRef()
So the NPE is either the cas is null, or the getView(sofaNum) is returning null. I'm not sure what the best way is to debug this... -Marshall On 2/9/2017 12:42 PM, nelson rivera wrote: > I have a aggregate service uima-as, at the end of aggregate the cas to > return is composed of as many views as the number of input files, each > view with annotations of processing. > With a number of input documents less than 15 the processing is > successful always, > but if the number of documents is greater than 15, i get a > NullPointerException at the aggregate service trying to serialize the > cas, not in the processing of AE aggregate. > the logs of aggregate service: > > 11:51:38.815 - 42: > cu.datys.xinetica.uima.core.MergerInViewCasMultipler.hasNext(285): > INFO: HasNext false > 11:51:38.875 - 44: > org.apache.uima.uimacpp.UimacppAnalysisComponent.log(396): INFO: : > XClusterAnalyzer::process --- OK > 11:51:39.145 - 45: > org.apache.uima.aae.controller.AggregateAnalysisEngineController_impl.replyToClient: > WARNING: Service: XClusterAnalyzerAggregate Runtime Exception > 11:51:39.145 - 45: > org.apache.uima.aae.controller.AggregateAnalysisEngineController_impl.replyToClient: > WARNING: > org.apache.uima.aae.error.AsynchAEException: > org.apache.uima.UIMARuntimeException > at > org.apache.uima.adapter.jms.activemq.JmsOutputChannel.getSerializedCas(JmsOutputChannel.java:1265) > at > org.apache.uima.adapter.jms.activemq.JmsOutputChannel.sendReply(JmsOutputChannel.java:800) > at > org.apache.uima.aae.controller.AggregateAnalysisEngineController_impl.sendReplyToRemoteClient(AggregateAnalysisEngineController_impl.java:2173) > at > org.apache.uima.aae.controller.AggregateAnalysisEngineController_impl.replyToClient(AggregateAnalysisEngineController_impl.java:2342) > at > org.apache.uima.aae.controller.AggregateAnalysisEngineController_impl.finalStep(AggregateAnalysisEngineController_impl.java:1862) > at > org.apache.uima.aae.controller.AggregateAnalysisEngineController_impl.executeFlowStep(AggregateAnalysisEngineController_impl.java:2489) > at > org.apache.uima.aae.controller.AggregateAnalysisEngineController_impl.process(AggregateAnalysisEngineController_impl.java:1271) > at > org.apache.uima.aae.handler.HandlerBase.invokeProcess(HandlerBase.java:118) > at > org.apache.uima.aae.handler.input.ProcessResponseHandler.cancelTimerAndProcess(ProcessResponseHandler.java:117) > at > org.apache.uima.aae.handler.input.ProcessResponseHandler.handleProcessResponseWithCASReference(ProcessResponseHandler.java:485) > at > org.apache.uima.aae.handler.input.ProcessResponseHandler.handle(ProcessResponseHandler.java:767) > at > org.apache.uima.aae.handler.HandlerBase.delegate(HandlerBase.java:149) > at > org.apache.uima.aae.handler.input.ProcessRequestHandler_impl.handle(ProcessRequestHandler_impl.java:1113) > at > org.apache.uima.aae.spi.transport.vm.UimaVmMessageListener.onMessage(UimaVmMessageListener.java:107) > at > org.apache.uima.aae.spi.transport.vm.UimaVmMessageDispatcher$1.run(UimaVmMessageDispatcher.java:70) > at > java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1145) > at > java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:615) > at > org.apache.uima.aae.UimaAsThreadFactory$1.run(UimaAsThreadFactory.java:132) > at java.lang.Thread.run(Thread.java:745) > Caused by: org.apache.uima.UIMARuntimeException > at > org.apache.uima.cas.impl.XmiCasSerializer.serialize(XmiCasSerializer.java:420) > at > org.apache.uima.cas.impl.XmiCasSerializer.serialize(XmiCasSerializer.java:385) > at > org.apache.uima.aae.UimaSerializer.serializeCasToXmi(UimaSerializer.java:145) > at > org.apache.uima.adapter.jms.activemq.JmsOutputChannel.serializeCAS(JmsOutputChannel.java:251) > at > org.apache.uima.adapter.jms.activemq.JmsOutputChannel.getSerializedCas(JmsOutputChannel.java:1250) > ... 18 more > Caused by: java.lang.NullPointerException > at > org.apache.uima.cas.impl.CasSerializerSupport$CasDocSerializer.getSofaAddr(CasSerializerSupport.java:454) > at > org.apache.uima.cas.impl.CasSerializerSupport$CasDocSerializer.writeViewsCommons(CasSerializerSupport.java:465) > at > org.apache.uima.cas.impl.XmiCasSerializer$XmiDocSerializer.writeViews(XmiCasSerializer.java:572) > at > org.apache.uima.cas.impl.CasSerializerSupport$CasDocSerializer.serialize(CasSerializerSupport.java:441) > at > org.apache.uima.cas.impl.XmiCasSerializer.serialize(XmiCasSerializer.java:415) > ... 22 more >
