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https://issues.apache.org/jira/browse/BEAM-9630?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=17314095#comment-17314095
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Ning Kang commented on BEAM-9630:
---------------------------------
Is this something a user can ignore? A similar question is asked
[here](https://stackoverflow.com/questions/66893912/apache-beam-statusruntimeexception-on-dataflow-pipeline).
> Python SDK streaming from Pubsub getting error `grpc.StatusRuntimeException:
> CANCELLED: call already cancelled`
> ---------------------------------------------------------------------------------------------------------------
>
> Key: BEAM-9630
> URL: https://issues.apache.org/jira/browse/BEAM-9630
> Project: Beam
> Issue Type: Bug
> Components: runner-dataflow
> Affects Versions: 2.19.0
> Environment: python==3.7.5
> apache-beam[gcp]==2.19.0
> google-cloud-pubsub==1.4.2
> Reporter: Kan Dong
> Priority: P2
> Fix For: Not applicable
>
>
> I have a dataflow streaming job using Apache Beam Python 3.7 SDK 2.19.0. The
> job consumes pubsub messages, treat data and publish to pubsub as output.
> Periodically, I would get the below error messages and the worker would stop
> consuming messages.
> ```Error message from worker: java.util.concurrent.ExecutionException:
> org.apache.beam.vendor.grpc.v1p21p0.io.grpc.StatusRuntimeException:
> CANCELLED: cancelled before receiving half close
> java.util.concurrent.CompletableFuture.reportGet(CompletableFuture.java:357)
> java.util.concurrent.CompletableFuture.get(CompletableFuture.java:1895)
> org.apache.beam.sdk.util.MoreFutures.get(MoreFutures.java:57)
> org.apache.beam.runners.dataflow.worker.fn.control.RegisterAndProcessBundleOperation.finish(RegisterAndProcessBundleOperation.java:332)
>
> org.apache.beam.runners.dataflow.worker.util.common.worker.MapTaskExecutor.execute(MapTaskExecutor.java:85)
>
> org.apache.beam.runners.dataflow.worker.fn.control.BeamFnMapTaskExecutor.execute(BeamFnMapTaskExecutor.java:125)
>
> org.apache.beam.runners.dataflow.worker.StreamingDataflowWorker.process(StreamingDataflowWorker.java:1350)
>
> org.apache.beam.runners.dataflow.worker.StreamingDataflowWorker.access$1100(StreamingDataflowWorker.java:152)
>
> org.apache.beam.runners.dataflow.worker.StreamingDataflowWorker$7.run(StreamingDataflowWorker.java:1073)
>
> java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1149)
>
> java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:624)
> java.lang.Thread.run(Thread.java:748) Caused by:
> org.apache.beam.vendor.grpc.v1p21p0.io.grpc.StatusRuntimeException:
> CANCELLED: cancelled before receiving half close
> org.apache.beam.vendor.grpc.v1p21p0.io.grpc.Status.asRuntimeException(Status.java:524)
>
> org.apache.beam.vendor.grpc.v1p21p0.io.grpc.stub.ServerCalls$StreamingServerCallHandler$StreamingServerCallListener.onCancel(ServerCalls.java:273)
>
> org.apache.beam.vendor.grpc.v1p21p0.io.grpc.PartialForwardingServerCallListener.onCancel(PartialForwardingServerCallListener.java:40)
>
> org.apache.beam.vendor.grpc.v1p21p0.io.grpc.ForwardingServerCallListener.onCancel(ForwardingServerCallListener.java:23)
>
> org.apache.beam.vendor.grpc.v1p21p0.io.grpc.ForwardingServerCallListener$SimpleForwardingServerCallListener.onCancel(ForwardingServerCallListener.java:40)
>
> org.apache.beam.vendor.grpc.v1p21p0.io.grpc.Contexts$ContextualizedServerCallListener.onCancel(Contexts.java:96)
>
> org.apache.beam.vendor.grpc.v1p21p0.io.grpc.internal.ServerCallImpl$ServerStreamListenerImpl.closed(ServerCallImpl.java:337)
>
> org.apache.beam.vendor.grpc.v1p21p0.io.grpc.internal.ServerImpl$JumpToApplicationThreadServerStreamListener$1Closed.runInContext(ServerImpl.java:793)
>
> org.apache.beam.vendor.grpc.v1p21p0.io.grpc.internal.ContextRunnable.run(ContextRunnable.java:37)
>
> org.apache.beam.vendor.grpc.v1p21p0.io.grpc.internal.SerializingExecutor.run(SerializingExecutor.java:123)
>
> java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1149)
>
> java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:624)
> java.lang.Thread.run(Thread.java:748)
> org.apache.beam.vendor.grpc.v1p21p0.io.grpc.StatusRuntimeException:
> CANCELLED: call already cancelled
> org.apache.beam.vendor.grpc.v1p21p0.io.grpc.Status.asRuntimeException(Status.java:524)
>
> org.apache.beam.vendor.grpc.v1p21p0.io.grpc.stub.ServerCalls$ServerCallStreamObserverImpl.onNext(ServerCalls.java:339)
>
> org.apache.beam.sdk.fn.stream.DirectStreamObserver.onNext(DirectStreamObserver.java:98)
>
> org.apache.beam.sdk.fn.data.BeamFnDataSizeBasedBufferingOutboundObserver.close(BeamFnDataSizeBasedBufferingOutboundObserver.java:84)
>
> org.apache.beam.runners.dataflow.worker.fn.data.RemoteGrpcPortWriteOperation.finish(RemoteGrpcPortWriteOperation.java:210)
>
> org.apache.beam.runners.dataflow.worker.util.common.worker.MapTaskExecutor.execute(MapTaskExecutor.java:85)
>
> org.apache.beam.runners.dataflow.worker.fn.control.BeamFnMapTaskExecutor.execute(BeamFnMapTaskExecutor.java:125)
>
> org.apache.beam.runners.dataflow.worker.StreamingDataflowWorker.process(StreamingDataflowWorker.java:1350)
>
> org.apache.beam.runners.dataflow.worker.StreamingDataflowWorker.access$1100(StreamingDataflowWorker.java:152)
>
> org.apache.beam.runners.dataflow.worker.StreamingDataflowWorker$7.run(StreamingDataflowWorker.java:1073)
>
> java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1149)
>
> java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:624)
> java.lang.Thread.run(Thread.java:748)```
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