数据流上的 grpc StatusRuntimeException

Question

我有一个数据流管道，我在其中使用 pubsub 消息，处理它们，然后发布到 pubsub。

每当我有太多计算（即我增加每条消息的处理量）时，我都会收到异常。：java.util.concurrent.ExecutionException：org.apache.beam.vendor.grpc.v1p13p1.io.grpc.StatusRuntimeException：CANCELLED：在接收半关闭之前取消

是什么导致了这个错误？我怎样才能避免它？完整的堆栈跟踪：

org.apache.beam.vendor.grpc.v1p13p1.io.grpc.StatusRuntimeException: CANCELLED: call already cancelled
        org.apache.beam.vendor.grpc.v1p13p1.io.grpc.Status.asRuntimeException(Status.java:517)
        org.apache.beam.vendor.grpc.v1p13p1.io.grpc.stub.ServerCalls$ServerCallStreamObserverImpl.onNext(ServerCalls.java:335)
        org.apache.beam.sdk.fn.stream.DirectStreamObserver.onNext(DirectStreamObserver.java:98)
        org.apache.beam.sdk.fn.stream.SynchronizedStreamObserver.onNext(SynchronizedStreamObserver.java:46)
        org.apache.beam.runners.fnexecution.control.FnApiControlClient.handle(FnApiControlClient.java:84)
        org.apache.beam.runners.dataflow.worker.fn.control.RegisterAndProcessBundleOperation.start(RegisterAndProcessBundleOperation.java:254)
        org.apache.beam.runners.dataflow.worker.util.common.worker.MapTaskExecutor.execute(MapTaskExecutor.java:77)
        org.apache.beam.runners.dataflow.worker.fn.control.BeamFnMapTaskExecutor.execute(BeamFnMapTaskExecutor.java:125)
        org.apache.beam.runners.dataflow.worker.StreamingDataflowWorker.process(StreamingDataflowWorker.java:1283)
        org.apache.beam.runners.dataflow.worker.StreamingDataflowWorker.access$1000(StreamingDataflowWorker.java:147)
        org.apache.beam.runners.dataflow.worker.StreamingDataflowWorker$6.run(StreamingDataflowWorker.java:1020)
        java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1142)
        java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:617)
        java.lang.Thread.run(Thread.java:745)