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https://issues.apache.org/jira/browse/BEAM-6512?focusedWorklogId=196066&page=com.atlassian.jira.plugin.system.issuetabpanels:worklog-tabpanel#worklog-196066
]
ASF GitHub Bot logged work on BEAM-6512:
----------------------------------------
Author: ASF GitHub Bot
Created on: 08/Feb/19 01:29
Start Date: 08/Feb/19 01:29
Worklog Time Spent: 10m
Work Description: TheNeuralBit commented on issue #7784: [BEAM-6512]
Fixes flake in GrpcDataServiceTest
URL: https://github.com/apache/beam/pull/7784#issuecomment-461659082
@robertwb could you take a look at this? I chatted a bit with Thomas Groh
who wrote the original test, and he said you'd be the most knowledgeable about
this.
I'm a little concerned that explicitly waiting for exactly three calls to
onNext could be cheating - e.g. is it possible for it to be called >3 times and
we should call that a test failure?
FYI -
[here's](https://scans.gradle.com/s/hp25w7lk2leze/tests/nmdop4qup5ykg-iau57g3mhia66)
a gradle scan with some more detailed logging from the original flake
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Issue Time Tracking
-------------------
Worklog Id: (was: 196066)
Time Spent: 20m (was: 10m)
> [beam_PreCommit_Java_Cron] [GrpcDataServiceTest] Flake, Multiplexer hanging up
> ------------------------------------------------------------------------------
>
> Key: BEAM-6512
> URL: https://issues.apache.org/jira/browse/BEAM-6512
> Project: Beam
> Issue Type: Bug
> Components: test-failures
> Reporter: Daniel Oliveira
> Assignee: Brian Hulette
> Priority: Minor
> Labels: currently-failing, flake, triaged
> Time Spent: 20m
> Remaining Estimate: 0h
>
> _Use this form to file an issue for test failure:_
> * [Jenkins Job|https://builds.apache.org/job/beam_PreCommit_Java_Cron/869/]
> * [Gradle Build Scan|https://scans.gradle.com/s/wodzocvegyy5a]
> * [Test source
> code|https://github.com/apache/beam/blob/f560edc5a4e38cb13d41718540271ae79d7d00ee/runners/java-fn-execution/src/test/java/org/apache/beam/runners/fnexecution/data/GrpcDataServiceTest.java#L105]
> Initial investigation:
> I see this message:
> {noformat}
> org.apache.beam.runners.fnexecution.data.GrpcDataServiceTest >
> testMessageReceivedBySingleClientWhenThereAreMultipleClients FAILED
> java.lang.AssertionError at GrpcDataServiceTest.java:105
> {noformat}
> And this message:
> {noformat}
> [grpc-default-executor-2] WARN
> org.apache.beam.sdk.fn.data.BeamFnDataGrpcMultiplexer - Hanged up for unknown
> endpoint.
> Jan 25, 2019 6:16:02 PM
> org.apache.beam.vendor.grpc.v1p13p1.io.grpc.internal.SerializingExecutor run
> SEVERE: Exception while executing runnable
> org.apache.beam.vendor.grpc.v1p13p1.io.grpc.internal.ClientCallImpl$ClientStreamListenerImpl$1StreamClosed@41415b8e
> java.lang.RuntimeException:
> org.apache.beam.vendor.grpc.v1p13p1.io.grpc.StatusRuntimeException:
> CANCELLED: Multiplexer hanging up
> at
> org.apache.beam.sdk.fn.test.TestStreams.lambda$throwingErrorHandler$0(TestStreams.java:95)
> at
> org.apache.beam.sdk.fn.test.TestStreams$ForwardingCallStreamObserver.onError(TestStreams.java:144)
> at
> org.apache.beam.vendor.grpc.v1p13p1.io.grpc.stub.ClientCalls$StreamObserverToCallListenerAdapter.onClose(ClientCalls.java:420)
> at
> org.apache.beam.vendor.grpc.v1p13p1.io.grpc.PartialForwardingClientCallListener.onClose(PartialForwardingClientCallListener.java:39)
> at
> org.apache.beam.vendor.grpc.v1p13p1.io.grpc.ForwardingClientCallListener.onClose(ForwardingClientCallListener.java:23)
> at
> org.apache.beam.vendor.grpc.v1p13p1.io.grpc.ForwardingClientCallListener$SimpleForwardingClientCallListener.onClose(ForwardingClientCallListener.java:40)
> at
> org.apache.beam.vendor.grpc.v1p13p1.io.grpc.internal.CensusStatsModule$StatsClientInterceptor$1$1.onClose(CensusStatsModule.java:684)
> at
> org.apache.beam.vendor.grpc.v1p13p1.io.grpc.PartialForwardingClientCallListener.onClose(PartialForwardingClientCallListener.java:39)
> at
> org.apache.beam.vendor.grpc.v1p13p1.io.grpc.ForwardingClientCallListener.onClose(ForwardingClientCallListener.java:23)
> at
> org.apache.beam.vendor.grpc.v1p13p1.io.grpc.ForwardingClientCallListener$SimpleForwardingClientCallListener.onClose(ForwardingClientCallListener.java:40)
> at
> org.apache.beam.vendor.grpc.v1p13p1.io.grpc.internal.CensusTracingModule$TracingClientInterceptor$1$1.onClose(CensusTracingModule.java:403)
> at
> org.apache.beam.vendor.grpc.v1p13p1.io.grpc.internal.ClientCallImpl.closeObserver(ClientCallImpl.java:459)
> at
> org.apache.beam.vendor.grpc.v1p13p1.io.grpc.internal.ClientCallImpl.access$300(ClientCallImpl.java:63)
> at
> org.apache.beam.vendor.grpc.v1p13p1.io.grpc.internal.ClientCallImpl$ClientStreamListenerImpl.close(ClientCallImpl.java:546)
> at
> org.apache.beam.vendor.grpc.v1p13p1.io.grpc.internal.ClientCallImpl$ClientStreamListenerImpl.access$600(ClientCallImpl.java:467)
> at
> org.apache.beam.vendor.grpc.v1p13p1.io.grpc.internal.ClientCallImpl$ClientStreamListenerImpl$1StreamClosed.runInContext(ClientCallImpl.java:584)
> at
> org.apache.beam.vendor.grpc.v1p13p1.io.grpc.internal.ContextRunnable.run(ContextRunnable.java:37)
> at
> org.apache.beam.vendor.grpc.v1p13p1.io.grpc.internal.SerializingExecutor.run(SerializingExecutor.java:123)
> at
> java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1149)
> at
> java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:624)
> at java.lang.Thread.run(Thread.java:748)
> Caused by:
> org.apache.beam.vendor.grpc.v1p13p1.io.grpc.StatusRuntimeException:
> CANCELLED: Multiplexer hanging up
> at
> org.apache.beam.vendor.grpc.v1p13p1.io.grpc.Status.asRuntimeException(Status.java:526)
> ... 19 more
> {noformat}
> Note that the second message is something I've seen when successfully ending
> a job without in portable runners (specifically the Java Reference Runner),
> so it might be a red herring.
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