Hi Steve,
I don’t have experience with the Flink CEP, but based on the previous stack
trace you posted I’m guessing that for one of the records,
value.getAudio_FFT1() returns null.
— Ken
> On Nov 16, 2018, at 3:40 AM, Steve Bistline <srbistline.t...@gmail.com> wrote:
>
> I have a fairly straightforward project that is generating a null pointer and
> heap space error.
>
> Any thoughts on where to begin debugging this?
>
> I suspect it is in this part of the code somewhere.
>
> Pattern<Event, ?> pattern = Pattern
> .<Event> begin("first event").subtype(IoTEvent.class)
> .where(new IterativeCondition<IoTEvent>()
> {
> private static final long serialVersionUID =
> -6301755149429716724L;
>
> @Override
> public boolean filter(IoTEvent value, Context<IoTEvent> ctx)
> throws Exception {
> return
> PatternConstants.AUDIO_YELL.toLowerCase().contains(value.getAudio_FFT1() );
> }
> })
> .next("second")
> .subtype(IoTEvent.class)
> .where(new IterativeCondition<IoTEvent>() {
> private static final long serialVersionUID = 2392863109523984059L;
>
> @Override
> public boolean filter(IoTEvent value, Context<IoTEvent> ctx)
> throws Exception {
> return
> PatternConstants.AUDIO_YELL.toLowerCase().contains(value.getAudio_FFT1() );
> }
> })
> .next("third")
> .subtype(IoTEvent.class)
> .where(new IterativeCondition<IoTEvent>() {
> private static final long serialVersionUID = 2392863109523984059L;
>
> @Override
> public boolean filter(IoTEvent value, Context<IoTEvent> ctx)
> throws Exception {
> return
> PatternConstants.AUDIO_YELL.toLowerCase().contains(value.getAudio_FFT1() );
> }
> })
> .next("fourth")
> .subtype(IoTEvent.class)
> .where(new IterativeCondition<IoTEvent>() {
> private static final long serialVersionUID = 2392863109523984059L;
>
> @Override
> public boolean filter(IoTEvent value, Context<IoTEvent> ctx)
> throws Exception {
> return
> PatternConstants.AUDIO_YELL.toLowerCase().contains(value.getAudio_FFT1() );
> }
> })
> .within(Time.seconds(10));
>
> Any help appreciated
>
> Thanks,
>
> SRB
>
> =======================================================
>
> =========================================
>
> java.lang.RuntimeException: Exception occurred while processing valve output
> watermark:
> at
> org.apache.flink.streaming.runtime.io.StreamInputProcessor$ForwardingValveOutputHandler.handleWatermark(StreamInputProcessor.java:265)
> at
> org.apache.flink.streaming.runtime.streamstatus.StatusWatermarkValve.findAndOutputNewMinWatermarkAcrossAlignedChannels(StatusWatermarkValve.java:189)
> at
> org.apache.flink.streaming.runtime.streamstatus.StatusWatermarkValve.inputWatermark(StatusWatermarkValve.java:111)
> at
> org.apache.flink.streaming.runtime.io.StreamInputProcessor.processInput(StreamInputProcessor.java:184)
> at
> org.apache.flink.streaming.runtime.tasks.OneInputStreamTask.run(OneInputStreamTask.java:103)
> at
> org.apache.flink.streaming.runtime.tasks.StreamTask.invoke(StreamTask.java:306)
> at org.apache.flink.runtime.taskmanager.Task.run(Task.java:703)
> at java.lang.Thread.run(Thread.java:748)
> Caused by: java.lang.RuntimeException: Failure happened in filter function.
> at org.apache.flink.cep.nfa.NFA.createDecisionGraph(NFA.java:704)
> at org.apache.flink.cep.nfa.NFA.computeNextStates(NFA.java:500)
> at org.apache.flink.cep.nfa.NFA.process(NFA.java:252)
> at
> org.apache.flink.cep.operator.AbstractKeyedCEPPatternOperator.processEvent(AbstractKeyedCEPPatternOperator.java:332)
> at
> org.apache.flink.cep.operator.AbstractKeyedCEPPatternOperator.lambda$onEventTime$0(AbstractKeyedCEPPatternOperator.java:235)
> at
> java.util.ArrayList$ArrayListSpliterator.forEachRemaining(ArrayList.java:1382)
> at
> java.util.stream.ReferencePipeline$Head.forEachOrdered(ReferencePipeline.java:590)
> at
> org.apache.flink.cep.operator.AbstractKeyedCEPPatternOperator.onEventTime(AbstractKeyedCEPPatternOperator.java:234)
> at
> org.apache.flink.streaming.api.operators.HeapInternalTimerService.advanceWatermark(HeapInternalTimerService.java:288)
> at
> org.apache.flink.streaming.api.operators.InternalTimeServiceManager.advanceWatermark(InternalTimeServiceManager.java:108)
> at
> org.apache.flink.streaming.api.operators.AbstractStreamOperator.processWatermark(AbstractStreamOperator.java:734)
> at
> org.apache.flink.streaming.runtime.io.StreamInputProcessor$ForwardingValveOutputHandler.handleWatermark(StreamInputProcessor.java:262)
> ... 7 more
> Caused by: java.lang.NullPointerException
>
> Steve Bistline <srbistline.t...@gmail.com <mailto:srbistline.t...@gmail.com>>
> Thu, Nov 15, 8:28 PM (10 hours ago)
>
> to user
> More to the story.... the cluster kicked out this error:
>
> Exception: java.lang.OutOfMemoryError thrown from the
> UncaughtExceptionHandler in thread "flink-7"
> Uncaught error from thread [Uncaught error from thread [Uncaught error from
> thread [flink-scheduler-1]: flink-akka.remote.default-remote-dispatcher-92]:
> flink-10]: Java heap space, shutting down JVM since
> 'akka.jvm-exit-on-fatal-error' is enabled for for ActorSystem[Java heap
> spaceflink, shutting down JVM since 'akka.jvm-exit-on-fatal-error' is enabled
> for for ActorSystem[Uncaught error from thread
> [flink-akka.remote.default-remote-dispatcher-96]: Java heap space, shutting
> down JVM since 'akka.jvm-exit-on-fatal-error' is enabled for for
> ActorSystem[flink]
> flink]
> ]
> Java heap space, shutting down JVM since 'akka.jvm-exit-on-fatal-error' is
> enabled for for ActorSystem[flink]
> java.lang.OutOfMemoryError: Java heap space
> java.lang.OutOfMemoryError: Java heap space
> java.lang.OutOfMemoryError: Java heap space
> at java.net.URLClassLoader.findClass(URLClassLoader.java:362)
> at java.lang.ClassLoader.loadClass(ClassLoader.java:424)
> at java.lang.ClassLoader.loadClass(ClassLoader.java:411)
> at sun.misc.Launcher$AppClassLoader.loadClass(Launcher.java:349)
> at java.lang.ClassLoader.loadClass(ClassLoader.java:357)
> at
> akka.remote.transport.ProtocolStateActor.akka$remote$transport$ProtocolStateActor$$decodePdu(AkkaProtocolTransport.scala:658)
> at
> akka.remote.transport.ProtocolStateActor$$anonfun$4.applyOrElse(AkkaProtocolTransport.scala:474)
> at
> akka.remote.transport.ProtocolStateActor$$anonfun$4.applyOrElse(AkkaProtocolTransport.scala:469)
> at
> scala.runtime.AbstractPartialFunction.apply(AbstractPartialFunction.scala:36)
> at akka.actor.FSM$class.processEvent(FSM.scala:663)
> at
> akka.remote.transport.ProtocolStateActor.processEvent(AkkaProtocolTransport.scala:285)
> at akka.actor.FSM$class.akka$actor$FSM$$processMsg(FSM.scala:657)
> at akka.actor.FSM$$anonfun$receive$1.applyOrElse(FSM.scala:651)
> at akka.actor.Actor$class.aroundReceive(Actor.scala:502)
> at
> akka.remote.transport.ProtocolStateActor.aroundReceive(AkkaProtocolTransport.scala:285)
> at akka.actor.ActorCell.receiveMessage(ActorCell.scala:526)
> at akka.actor.ActorCell.invoke(ActorCell.scala:495)
> at akka.dispatch.Mailbox.processMailbox(Mailbox.scala:257)
> at akka.dispatch.Mailbox.run(Mailbox.scala:224)
> at akka.dispatch.Mailbox.exec(Mailbox.scala:234)
> at scala.concurrent.forkjoin.ForkJoinTask.doExec(ForkJoinTask.java:260)
> at
> scala.concurrent.forkjoin.ForkJoinPool$WorkQueue.runTask(ForkJoinPool.java:1339)
> at
> scala.concurrent.forkjoin.ForkJoinPool.runWorker(ForkJoinPool.java:1979)
> at
> scala.concurrent.forkjoin.ForkJoinWorkerThread.run(ForkJoinWorkerThread.java:107)
> java.lang.OutOfMemoryError: Java heap space
>
>
--------------------------
Ken Krugler
+1 530-210-6378
http://www.scaleunlimited.com
Custom big data solutions & training
Flink, Solr, Hadoop, Cascading & Cassandra
