ppawel opened a new issue, #27485:
URL: https://github.com/apache/beam/issues/27485
### What happened?
We have a streaming job in Google Cloud Dataflow using Apache Beam 2.48.0
which reads messages from JMS. The queue is a relatively low/moderate traffic
queue (up to 10 msgs/s at a certain time of day, usually 1-2 msgs/s).
Several times a day we get the NPE below, usually it happens near the peak
messagethroughput. It seems to impact consumption of messages because we need
to restart the job, otherwise there are messages left in the queue
unconsumed/unacked but I'm not 100% whether this is related to the NPE. We are
separately investigating issue with not acking processed messages, could be
related to something like #18857.
Stack trace:
```
org.apache.beam.sdk.util.UserCodeException: java.lang.RuntimeException:
java.io.IOException: java.lang.NullPointerException: Cannot invoke
"javax.jms.MessageConsumer.receiveNoWait()" because "this.consumer" is null
at
org.apache.beam.sdk.util.UserCodeException.wrap(UserCodeException.java:39)
at
org.apache.beam.sdk.io.Read$UnboundedSourceAsSDFWrapperFn$DoFnInvoker.invokeProcessElement(Unknown
Source)
at
org.apache.beam.fn.harness.FnApiDoFnRunner.processElementForWindowObservingSizedElementAndRestriction(FnApiDoFnRunner.java:1096)
at
org.apache.beam.fn.harness.FnApiDoFnRunner.access$1500(FnApiDoFnRunner.java:142)
at
org.apache.beam.fn.harness.FnApiDoFnRunner$4.accept(FnApiDoFnRunner.java:656)
at
org.apache.beam.fn.harness.FnApiDoFnRunner$4.accept(FnApiDoFnRunner.java:651)
at
org.apache.beam.fn.harness.data.PCollectionConsumerRegistry$MetricTrackingFnDataReceiver.accept(PCollectionConsumerRegistry.java:311)
at
org.apache.beam.fn.harness.data.PCollectionConsumerRegistry$MetricTrackingFnDataReceiver.accept(PCollectionConsumerRegistry.java:239)
at
org.apache.beam.fn.harness.BeamFnDataReadRunner.forwardElementToConsumer(BeamFnDataReadRunner.java:213)
at
org.apache.beam.sdk.fn.data.BeamFnDataInboundObserver.multiplexElements(BeamFnDataInboundObserver.java:158)
at
org.apache.beam.fn.harness.control.ProcessBundleHandler.processBundle(ProcessBundleHandler.java:537)
at
org.apache.beam.fn.harness.control.BeamFnControlClient.delegateOnInstructionRequestType(BeamFnControlClient.java:151)
at
org.apache.beam.fn.harness.control.BeamFnControlClient$InboundObserver.lambda$onNext$0(BeamFnControlClient.java:116)
at
java.base/java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:539)
at java.base/java.util.concurrent.FutureTask.run(FutureTask.java:264)
at
org.apache.beam.sdk.util.UnboundedScheduledExecutorService$ScheduledFutureTask.run(UnboundedScheduledExecutorService.java:163)
at
java.base/java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1136)
at
java.base/java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:635)
at java.base/java.lang.Thread.run(Thread.java:833)
Caused by: java.lang.RuntimeException: java.io.IOException:
java.lang.NullPointerException: Cannot invoke
"javax.jms.MessageConsumer.receiveNoWait()" because "this.consumer" is null
at
org.apache.beam.sdk.io.Read$UnboundedSourceAsSDFWrapperFn$UnboundedSourceAsSDFRestrictionTracker.tryClaim(Read.java:898)
at
org.apache.beam.sdk.io.Read$UnboundedSourceAsSDFWrapperFn$UnboundedSourceAsSDFRestrictionTracker.tryClaim(Read.java:802)
at
org.apache.beam.sdk.fn.splittabledofn.RestrictionTrackers$RestrictionTrackerObserver.tryClaim(RestrictionTrackers.java:59)
at
org.apache.beam.sdk.io.Read$UnboundedSourceAsSDFWrapperFn.processElement(Read.java:552)
Caused by: java.io.IOException: java.lang.NullPointerException: Cannot
invoke "javax.jms.MessageConsumer.receiveNoWait()" because "this.consumer" is
null
at
org.apache.beam.sdk.io.jms.JmsIO$UnboundedJmsReader.advance(JmsIO.java:575)
at
org.apache.beam.sdk.io.Read$UnboundedSourceAsSDFWrapperFn$UnboundedSourceAsSDFRestrictionTracker.tryClaim(Read.java:877)
at
org.apache.beam.sdk.io.Read$UnboundedSourceAsSDFWrapperFn$UnboundedSourceAsSDFRestrictionTracker.tryClaim(Read.java:802)
at
org.apache.beam.sdk.fn.splittabledofn.RestrictionTrackers$RestrictionTrackerObserver.tryClaim(RestrictionTrackers.java:59)
at
org.apache.beam.sdk.io.Read$UnboundedSourceAsSDFWrapperFn.processElement(Read.java:552)
at
org.apache.beam.sdk.io.Read$UnboundedSourceAsSDFWrapperFn$DoFnInvoker.invokeProcessElement(Unknown
Source)
at
org.apache.beam.fn.harness.FnApiDoFnRunner.processElementForWindowObservingSizedElementAndRestriction(FnApiDoFnRunner.java:1096)
at
org.apache.beam.fn.harness.FnApiDoFnRunner.access$1500(FnApiDoFnRunner.java:142)
at
org.apache.beam.fn.harness.FnApiDoFnRunner$4.accept(FnApiDoFnRunner.java:656)
at
org.apache.beam.fn.harness.FnApiDoFnRunner$4.accept(FnApiDoFnRunner.java:651)
at
org.apache.beam.fn.harness.data.PCollectionConsumerRegistry$MetricTrackingFnDataReceiver.accept(PCollectionConsumerRegistry.java:311)
at
org.apache.beam.fn.harness.data.PCollectionConsumerRegistry$MetricTrackingFnDataReceiver.accept(PCollectionConsumerRegistry.java:239)
at
org.apache.beam.fn.harness.BeamFnDataReadRunner.forwardElementToConsumer(BeamFnDataReadRunner.java:213)
at
org.apache.beam.sdk.fn.data.BeamFnDataInboundObserver.multiplexElements(BeamFnDataInboundObserver.java:158)
at
org.apache.beam.fn.harness.control.ProcessBundleHandler.processBundle(ProcessBundleHandler.java:537)
at
org.apache.beam.fn.harness.control.BeamFnControlClient.delegateOnInstructionRequestType(BeamFnControlClient.java:151)
at
org.apache.beam.fn.harness.control.BeamFnControlClient$InboundObserver.lambda$onNext$0(BeamFnControlClient.java:116)
at
java.base/java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:539)
at java.base/java.util.concurrent.FutureTask.run(FutureTask.java:264)
at
org.apache.beam.sdk.util.UnboundedScheduledExecutorService$ScheduledFutureTask.run(UnboundedScheduledExecutorService.java:163)
at
java.base/java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1136)
at
java.base/java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:635)
at java.base/java.lang.Thread.run(Thread.java:833)
Caused by: java.lang.NullPointerException: Cannot invoke
"javax.jms.MessageConsumer.receiveNoWait()" because "this.consumer" is null
at
org.apache.beam.sdk.io.jms.JmsIO$UnboundedJmsReader.advance(JmsIO.java:561)
... 22 more
```
### Issue Priority
Priority: 2 (default / most bugs should be filed as P2)
### Issue Components
- [ ] Component: Python SDK
- [X] Component: Java SDK
- [ ] Component: Go SDK
- [ ] Component: Typescript SDK
- [ ] Component: IO connector
- [ ] Component: Beam examples
- [ ] Component: Beam playground
- [ ] Component: Beam katas
- [ ] Component: Website
- [ ] Component: Spark Runner
- [ ] Component: Flink Runner
- [ ] Component: Samza Runner
- [ ] Component: Twister2 Runner
- [ ] Component: Hazelcast Jet Runner
- [ ] Component: Google Cloud Dataflow Runner
--
This is an automated message from the Apache Git Service.
To respond to the message, please log on to GitHub and use the
URL above to go to the specific comment.
To unsubscribe, e-mail: [email protected]
For queries about this service, please contact Infrastructure at:
[email protected]
