[ 
https://issues.apache.org/jira/browse/BEAM-6317?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
 ]

Andrew Pilloud updated BEAM-6317:
---------------------------------
    Description: 
https://builds.apache.org/job/beam_PostCommit_Java_ValidatesRunner_PortabilityApi_Dataflow/385/
{code}
INFO: Job 2018-12-26_16_45_48-1113656764334597924 failed with status FAILED.
{code}

https://pantheon.corp.google.com/dataflow/jobsDetail/locations/us-central1/jobs/2018-12-26_16_45_48-1113656764334597924?project=apache-beam-testing&pli=1
{code}
Workflow failed. Causes: 
S14:PAssert$7/GroupGlobally/GroupDummyAndContents/Read+PAssert$7/GroupGlobally/GroupDummyAndContents/GroupByWindow+PAssert$7/GroupGlobally/Values/Values/Map+PAssert$7/GroupGlobally/ParDo(Concat)+PAssert$7/GetPane/Map+PAssert$7/RunChecks+PAssert$7/VerifyAssertions/ParDo(DefaultConclude)
 failed., A work item was attempted 4 times without success. Each time the 
worker eventually lost contact with the service. The work item was attempted 
on: 
  passerttest0testcontainsi-12261645-jpaz-harness-cnwp,
  passerttest0testcontainsi-12261645-jpaz-harness-cnwp,
  passerttest0testcontainsi-12261645-jpaz-harness-cnwp,
  passerttest0testcontainsi-12261645-jpaz-harness-cnwp
{code}

{code}

java.util.concurrent.ExecutionException: java.lang.RuntimeException: Error 
received from SDK harness for instruction -607: 
org.apache.beam.sdk.util.UserCodeException: java.lang.AssertionError: 
Create.Values/Read(CreateSource).out: 
Expected: iterable over [<2>, <1>, <4>, <3>, <7>] in any order
     but: No item matches: <7> in [<1>, <2>, <3>, <4>]
        at 
org.apache.beam.sdk.util.UserCodeException.wrap(UserCodeException.java:34)
        at 
org.apache.beam.sdk.testing.PAssert$DefaultConcludeFn$DoFnInvoker.invokeProcessElement(Unknown
 Source)
        at 
org.apache.beam.fn.harness.FnApiDoFnRunner.processElement(FnApiDoFnRunner.java:227)
        at 
org.apache.beam.fn.harness.FnApiDoFnRunner.outputTo(FnApiDoFnRunner.java:268)
        at 
org.apache.beam.fn.harness.FnApiDoFnRunner.access$300(FnApiDoFnRunner.java:75)
        at 
org.apache.beam.fn.harness.FnApiDoFnRunner$ProcessBundleContext.output(FnApiDoFnRunner.java:515)
        at 
org.apache.beam.sdk.testing.PAssert$GroupedValuesCheckerDoFn.processElement(PAssert.java:1241)
        at 
org.apache.beam.sdk.testing.PAssert$GroupedValuesCheckerDoFn$DoFnInvoker.invokeProcessElement(Unknown
 Source)
        at 
org.apache.beam.fn.harness.FnApiDoFnRunner.processElement(FnApiDoFnRunner.java:227)
        at 
org.apache.beam.fn.harness.FnApiDoFnRunner.outputTo(FnApiDoFnRunner.java:268)
        at 
org.apache.beam.fn.harness.FnApiDoFnRunner.access$300(FnApiDoFnRunner.java:75)
        at 
org.apache.beam.fn.harness.FnApiDoFnRunner$ProcessBundleContext.output(FnApiDoFnRunner.java:515)
        at 
org.apache.beam.sdk.transforms.DoFnOutputReceivers$WindowedContextOutputReceiver.output(DoFnOutputReceivers.java:73)
        at 
org.apache.beam.sdk.transforms.MapElements$1.processElement(MapElements.java:122)
        at 
org.apache.beam.sdk.transforms.MapElements$1$DoFnInvoker.invokeProcessElement(Unknown
 Source)
        at 
org.apache.beam.fn.harness.FnApiDoFnRunner.processElement(FnApiDoFnRunner.java:227)
        at 
org.apache.beam.fn.harness.FnApiDoFnRunner.outputTo(FnApiDoFnRunner.java:268)
        at 
org.apache.beam.fn.harness.FnApiDoFnRunner.access$300(FnApiDoFnRunner.java:75)
        at 
org.apache.beam.fn.harness.FnApiDoFnRunner$ProcessBundleContext.output(FnApiDoFnRunner.java:515)
        at 
org.apache.beam.sdk.testing.PAssert$ConcatFn.processElement(PAssert.java:1076)
        at 
org.apache.beam.sdk.testing.PAssert$ConcatFn$DoFnInvoker.invokeProcessElement(Unknown
 Source)
        at 
org.apache.beam.fn.harness.FnApiDoFnRunner.processElement(FnApiDoFnRunner.java:227)
        at 
org.apache.beam.fn.harness.FnApiDoFnRunner.outputTo(FnApiDoFnRunner.java:268)
        at 
org.apache.beam.fn.harness.FnApiDoFnRunner.access$300(FnApiDoFnRunner.java:75)
        at 
org.apache.beam.fn.harness.FnApiDoFnRunner$ProcessBundleContext.output(FnApiDoFnRunner.java:515)
        at 
org.apache.beam.sdk.transforms.DoFnOutputReceivers$WindowedContextOutputReceiver.output(DoFnOutputReceivers.java:73)
        at 
org.apache.beam.sdk.transforms.MapElements$1.processElement(MapElements.java:122)
        at 
org.apache.beam.sdk.transforms.MapElements$1$DoFnInvoker.invokeProcessElement(Unknown
 Source)
        at 
org.apache.beam.fn.harness.FnApiDoFnRunner.processElement(FnApiDoFnRunner.java:227)
        at 
org.apache.beam.fn.harness.data.QueueingBeamFnDataClient.drainAndBlock(QueueingBeamFnDataClient.java:102)
        at 
org.apache.beam.fn.harness.control.ProcessBundleHandler.processBundle(ProcessBundleHandler.java:308)
        at 
org.apache.beam.fn.harness.control.BeamFnControlClient.delegateOnInstructionRequestType(BeamFnControlClient.java:160)
        at 
org.apache.beam.fn.harness.control.BeamFnControlClient.lambda$processInstructionRequests$0(BeamFnControlClient.java:144)
        at 
java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1149)
        at 
java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:624)
        at java.lang.Thread.run(Thread.java:748)
Caused by: java.lang.AssertionError: Create.Values/Read(CreateSource).out: 
Expected: iterable over [<2>, <1>, <4>, <3>, <7>] in any order
     but: No item matches: <7> in [<1>, <2>, <3>, <4>]
        at 
org.apache.beam.sdk.testing.PAssert$PAssertionSite.capture(PAssert.java:168)
        at org.apache.beam.sdk.testing.PAssert.that(PAssert.java:392)
        at org.apache.beam.sdk.testing.PAssert.that(PAssert.java:384)
        at 
org.apache.beam.sdk.testing.PAssertTest.testContainsInAnyOrderFalse(PAssertTest.java:442)
        at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
        at 
sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62)
        at 
sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
        at java.lang.reflect.Method.invoke(Method.java:498)
        at 
org.junit.runners.model.FrameworkMethod$1.runReflectiveCall(FrameworkMethod.java:59)
        at 
org.junit.internal.runners.model.ReflectiveCallable.run(ReflectiveCallable.java:12)
        at 
org.junit.runners.model.FrameworkMethod.invokeExplosively(FrameworkMethod.java:56)
        at 
org.junit.internal.runners.statements.InvokeMethod.evaluate(InvokeMethod.java:17)
        at 
org.apache.beam.sdk.testing.TestPipeline$1.evaluate(TestPipeline.java:319)
        at 
org.junit.rules.ExpectedException$ExpectedExceptionStatement.evaluate(ExpectedException.java:265)
        at 
org.junit.runners.BlockJUnit4ClassRunner$1.evaluate(BlockJUnit4ClassRunner.java:100)
        at org.junit.runners.ParentRunner.runLeaf(ParentRunner.java:349)
        at 
org.junit.runners.BlockJUnit4ClassRunner.runChild(BlockJUnit4ClassRunner.java:103)
        at 
org.junit.runners.BlockJUnit4ClassRunner.runChild(BlockJUnit4ClassRunner.java:63)
        at org.junit.runners.ParentRunner$3.run(ParentRunner.java:314)
        at org.junit.runners.ParentRunner$1.schedule(ParentRunner.java:79)
        at org.junit.runners.ParentRunner.runChildren(ParentRunner.java:312)
        at org.junit.runners.ParentRunner.access$100(ParentRunner.java:66)
        at org.junit.runners.ParentRunner$2.evaluate(ParentRunner.java:292)
        at org.junit.runners.ParentRunner.run(ParentRunner.java:396)
        at 
org.gradle.api.internal.tasks.testing.junit.JUnitTestClassExecutor.runTestClass(JUnitTestClassExecutor.java:106)
        at 
org.gradle.api.internal.tasks.testing.junit.JUnitTestClassExecutor.execute(JUnitTestClassExecutor.java:58)
        at 
org.gradle.api.internal.tasks.testing.junit.JUnitTestClassExecutor.execute(JUnitTestClassExecutor.java:38)
        at 
org.gradle.api.internal.tasks.testing.junit.AbstractJUnitTestClassProcessor.processTestClass(AbstractJUnitTestClassProcessor.java:66)
        at 
org.gradle.api.internal.tasks.testing.SuiteTestClassProcessor.processTestClass(SuiteTestClassProcessor.java:51)
        at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
        at 
sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62)
        at 
sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
        at java.lang.reflect.Method.invoke(Method.java:498)
        at 
org.gradle.internal.dispatch.ReflectionDispatch.dispatch(ReflectionDispatch.java:35)
        at 
org.gradle.internal.dispatch.ReflectionDispatch.dispatch(ReflectionDispatch.java:24)
        at 
org.gradle.internal.dispatch.ContextClassLoaderDispatch.dispatch(ContextClassLoaderDispatch.java:32)
        at 
org.gradle.internal.dispatch.ProxyDispatchAdapter$DispatchingInvocationHandler.invoke(ProxyDispatchAdapter.java:93)
        at com.sun.proxy.$Proxy2.processTestClass(Unknown Source)
        at 
org.gradle.api.internal.tasks.testing.worker.TestWorker.processTestClass(TestWorker.java:117)
        at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
        at 
sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62)
        at 
sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
        at java.lang.reflect.Method.invoke(Method.java:498)
        at 
org.gradle.internal.dispatch.ReflectionDispatch.dispatch(ReflectionDispatch.java:35)
        at 
org.gradle.internal.dispatch.ReflectionDispatch.dispatch(ReflectionDispatch.java:24)
        at 
org.gradle.internal.remote.internal.hub.MessageHubBackedObjectConnection$DispatchWrapper.dispatch(MessageHubBackedObjectConnection.java:155)
        at 
org.gradle.internal.remote.internal.hub.MessageHubBackedObjectConnection$DispatchWrapper.dispatch(MessageHubBackedObjectConnection.java:137)
        at 
org.gradle.internal.remote.internal.hub.MessageHub$Handler.run(MessageHub.java:404)
        at 
org.gradle.internal.concurrent.ExecutorPolicy$CatchAndRecordFailures.onExecute(ExecutorPolicy.java:63)
        at 
org.gradle.internal.concurrent.ManagedExecutorImpl$1.run(ManagedExecutorImpl.java:46)
        at 
java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1149)
        at 
java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:624)
        at 
org.gradle.internal.concurrent.ThreadFactoryImpl$ManagedThreadRunnable.run(ThreadFactoryImpl.java:55)
Caused by: java.lang.AssertionError: 
Expected: iterable over [<2>, <1>, <4>, <3>, <7>] in any order
     but: No item matches: <7> in [<1>, <2>, <3>, <4>]
        at org.hamcrest.MatcherAssert.assertThat(MatcherAssert.java:20)
        at org.junit.Assert.assertThat(Assert.java:966)
        at org.junit.Assert.assertThat(Assert.java:931)
        at 
org.apache.beam.sdk.testing.PAssert$AssertContainsInAnyOrder.apply(PAssert.java:1346)
        at 
org.apache.beam.sdk.testing.PAssert$AssertContainsInAnyOrder.apply(PAssert.java:1325)
        at 
org.apache.beam.sdk.testing.PAssert$CheckRelationAgainstExpected.apply(PAssert.java:993)
        at 
org.apache.beam.sdk.testing.PAssert$CheckRelationAgainstExpected.apply(PAssert.java:973)
        at org.apache.beam.sdk.testing.PAssert.doChecks(PAssert.java:1274)
        at 
org.apache.beam.sdk.testing.PAssert$GroupedValuesCheckerDoFn.processElement(PAssert.java:1241)
        at 
org.apache.beam.sdk.testing.PAssert$GroupedValuesCheckerDoFn$DoFnInvoker.invokeProcessElement(Unknown
 Source)
        at 
org.apache.beam.fn.harness.FnApiDoFnRunner.processElement(FnApiDoFnRunner.java:227)
        at 
org.apache.beam.fn.harness.FnApiDoFnRunner.outputTo(FnApiDoFnRunner.java:268)
        at 
org.apache.beam.fn.harness.FnApiDoFnRunner.access$300(FnApiDoFnRunner.java:75)
        at 
org.apache.beam.fn.harness.FnApiDoFnRunner$ProcessBundleContext.output(FnApiDoFnRunner.java:515)
        at 
org.apache.beam.sdk.transforms.DoFnOutputReceivers$WindowedContextOutputReceiver.output(DoFnOutputReceivers.java:73)
        at 
org.apache.beam.sdk.transforms.MapElements$1.processElement(MapElements.java:122)
        at 
org.apache.beam.sdk.transforms.MapElements$1$DoFnInvoker.invokeProcessElement(Unknown
 Source)
        at 
org.apache.beam.fn.harness.FnApiDoFnRunner.processElement(FnApiDoFnRunner.java:227)
        at 
org.apache.beam.fn.harness.FnApiDoFnRunner.outputTo(FnApiDoFnRunner.java:268)
        at 
org.apache.beam.fn.harness.FnApiDoFnRunner.access$300(FnApiDoFnRunner.java:75)
        at 
org.apache.beam.fn.harness.FnApiDoFnRunner$ProcessBundleContext.output(FnApiDoFnRunner.java:515)
        at 
org.apache.beam.sdk.testing.PAssert$ConcatFn.processElement(PAssert.java:1076)
        at 
org.apache.beam.sdk.testing.PAssert$ConcatFn$DoFnInvoker.invokeProcessElement(Unknown
 Source)
        at 
org.apache.beam.fn.harness.FnApiDoFnRunner.processElement(FnApiDoFnRunner.java:227)
        at 
org.apache.beam.fn.harness.FnApiDoFnRunner.outputTo(FnApiDoFnRunner.java:268)
        at 
org.apache.beam.fn.harness.FnApiDoFnRunner.access$300(FnApiDoFnRunner.java:75)
        at 
org.apache.beam.fn.harness.FnApiDoFnRunner$ProcessBundleContext.output(FnApiDoFnRunner.java:515)
        at 
org.apache.beam.sdk.transforms.DoFnOutputReceivers$WindowedContextOutputReceiver.output(DoFnOutputReceivers.java:73)
        at 
org.apache.beam.sdk.transforms.MapElements$1.processElement(MapElements.java:122)
        at 
org.apache.beam.sdk.transforms.MapElements$1$DoFnInvoker.invokeProcessElement(Unknown
 Source)
        at 
org.apache.beam.fn.harness.FnApiDoFnRunner.processElement(FnApiDoFnRunner.java:227)
        at 
org.apache.beam.fn.harness.data.QueueingBeamFnDataClient.drainAndBlock(QueueingBeamFnDataClient.java:102)
        at 
org.apache.beam.fn.harness.control.ProcessBundleHandler.processBundle(ProcessBundleHandler.java:308)
        at 
org.apache.beam.fn.harness.control.BeamFnControlClient.delegateOnInstructionRequestType(BeamFnControlClient.java:160)
        at 
org.apache.beam.fn.harness.control.BeamFnControlClient.lambda$processInstructionRequests$0(BeamFnControlClient.java:144)
        at 
java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1149)
        at 
java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:624)
        at java.lang.Thread.run(Thread.java:748)

        at 
java.util.concurrent.CompletableFuture.reportGet(CompletableFuture.java:357)
        at 
java.util.concurrent.CompletableFuture.get(CompletableFuture.java:1895)
        at org.apache.beam.sdk.util.MoreFutures.get(MoreFutures.java:57)
        at 
org.apache.beam.runners.dataflow.worker.fn.control.RegisterAndProcessBundleOperation.finish(RegisterAndProcessBundleOperation.java:280)
        at 
org.apache.beam.runners.dataflow.worker.util.common.worker.MapTaskExecutor.execute(MapTaskExecutor.java:84)
        at 
org.apache.beam.runners.dataflow.worker.fn.control.BeamFnMapTaskExecutor.execute(BeamFnMapTaskExecutor.java:130)
        at 
org.apache.beam.runners.dataflow.worker.BatchDataflowWorker.executeWork(BatchDataflowWorker.java:409)
        at 
org.apache.beam.runners.dataflow.worker.BatchDataflowWorker.doWork(BatchDataflowWorker.java:378)
        at 
org.apache.beam.runners.dataflow.worker.BatchDataflowWorker.getAndPerformWork(BatchDataflowWorker.java:306)
        at 
org.apache.beam.runners.dataflow.worker.DataflowRunnerHarness.start(DataflowRunnerHarness.java:195)
        at 
org.apache.beam.runners.dataflow.worker.DataflowRunnerHarness.main(DataflowRunnerHarness.java:123)
        Suppressed: java.lang.IllegalStateException: Already closed.
                at 
org.apache.beam.sdk.fn.data.BeamFnDataBufferingOutboundObserver.close(BeamFnDataBufferingOutboundObserver.java:95)
                at 
org.apache.beam.runners.dataflow.worker.fn.data.RemoteGrpcPortWriteOperation.abort(RemoteGrpcPortWriteOperation.java:215)
                at 
org.apache.beam.runners.dataflow.worker.util.common.worker.MapTaskExecutor.execute(MapTaskExecutor.java:90)
                ... 6 more
Caused by: java.lang.RuntimeException: Error received from SDK harness for 
instruction -607: org.apache.beam.sdk.util.UserCodeException: 
java.lang.AssertionError: Create.Values/Read(CreateSource).out: 
Expected: iterable over [<2>, <1>, <4>, <3>, <7>] in any order
     but: No item matches: <7> in [<1>, <2>, <3>, <4>]
        at 
org.apache.beam.sdk.util.UserCodeException.wrap(UserCodeException.java:34)
        at 
org.apache.beam.sdk.testing.PAssert$DefaultConcludeFn$DoFnInvoker.invokeProcessElement(Unknown
 Source)
        at 
org.apache.beam.fn.harness.FnApiDoFnRunner.processElement(FnApiDoFnRunner.java:227)
        at 
org.apache.beam.fn.harness.FnApiDoFnRunner.outputTo(FnApiDoFnRunner.java:268)
        at 
org.apache.beam.fn.harness.FnApiDoFnRunner.access$300(FnApiDoFnRunner.java:75)
        at 
org.apache.beam.fn.harness.FnApiDoFnRunner$ProcessBundleContext.output(FnApiDoFnRunner.java:515)
        at 
org.apache.beam.sdk.testing.PAssert$GroupedValuesCheckerDoFn.processElement(PAssert.java:1241)
        at 
org.apache.beam.sdk.testing.PAssert$GroupedValuesCheckerDoFn$DoFnInvoker.invokeProcessElement(Unknown
 Source)
        at 
org.apache.beam.fn.harness.FnApiDoFnRunner.processElement(FnApiDoFnRunner.java:227)
        at 
org.apache.beam.fn.harness.FnApiDoFnRunner.outputTo(FnApiDoFnRunner.java:268)
        at 
org.apache.beam.fn.harness.FnApiDoFnRunner.access$300(FnApiDoFnRunner.java:75)
        at 
org.apache.beam.fn.harness.FnApiDoFnRunner$ProcessBundleContext.output(FnApiDoFnRunner.java:515)
        at 
org.apache.beam.sdk.transforms.DoFnOutputReceivers$WindowedContextOutputReceiver.output(DoFnOutputReceivers.java:73)
        at 
org.apache.beam.sdk.transforms.MapElements$1.processElement(MapElements.java:122)
        at 
org.apache.beam.sdk.transforms.MapElements$1$DoFnInvoker.invokeProcessElement(Unknown
 Source)
        at 
org.apache.beam.fn.harness.FnApiDoFnRunner.processElement(FnApiDoFnRunner.java:227)
        at 
org.apache.beam.fn.harness.FnApiDoFnRunner.outputTo(FnApiDoFnRunner.java:268)
        at 
org.apache.beam.fn.harness.FnApiDoFnRunner.access$300(FnApiDoFnRunner.java:75)
        at 
org.apache.beam.fn.harness.FnApiDoFnRunner$ProcessBundleContext.output(FnApiDoFnRunner.java:515)
        at 
org.apache.beam.sdk.testing.PAssert$ConcatFn.processElement(PAssert.java:1076)
        at 
org.apache.beam.sdk.testing.PAssert$ConcatFn$DoFnInvoker.invokeProcessElement(Unknown
 Source)
        at 
org.apache.beam.fn.harness.FnApiDoFnRunner.processElement(FnApiDoFnRunner.java:227)
        at 
org.apache.beam.fn.harness.FnApiDoFnRunner.outputTo(FnApiDoFnRunner.java:268)
        at 
org.apache.beam.fn.harness.FnApiDoFnRunner.access$300(FnApiDoFnRunner.java:75)
        at 
org.apache.beam.fn.harness.FnApiDoFnRunner$ProcessBundleContext.output(FnApiDoFnRunner.java:515)
        at 
org.apache.beam.sdk.transforms.DoFnOutputReceivers$WindowedContextOutputReceiver.output(DoFnOutputReceivers.java:73)
        at 
org.apache.beam.sdk.transforms.MapElements$1.processElement(MapElements.java:122)
        at 
org.apache.beam.sdk.transforms.MapElements$1$DoFnInvoker.invokeProcessElement(Unknown
 Source)
        at 
org.apache.beam.fn.harness.FnApiDoFnRunner.processElement(FnApiDoFnRunner.java:227)
        at 
org.apache.beam.fn.harness.data.QueueingBeamFnDataClient.drainAndBlock(QueueingBeamFnDataClient.java:102)
        at 
org.apache.beam.fn.harness.control.ProcessBundleHandler.processBundle(ProcessBundleHandler.java:308)
        at 
org.apache.beam.fn.harness.control.BeamFnControlClient.delegateOnInstructionRequestType(BeamFnControlClient.java:160)
        at 
org.apache.beam.fn.harness.control.BeamFnControlClient.lambda$processInstructionRequests$0(BeamFnControlClient.java:144)
        at 
java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1149)
        at 
java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:624)
        at java.lang.Thread.run(Thread.java:748)
Caused by: java.lang.AssertionError: Create.Values/Read(CreateSource).out: 
Expected: iterable over [<2>, <1>, <4>, <3>, <7>] in any order
     but: No item matches: <7> in [<1>, <2>, <3>, <4>]
        at 
org.apache.beam.sdk.testing.PAssert$PAssertionSite.capture(PAssert.java:168)
        at org.apache.beam.sdk.testing.PAssert.that(PAssert.java:392)
        at org.apache.beam.sdk.testing.PAssert.that(PAssert.java:384)
        at 
org.apache.beam.sdk.testing.PAssertTest.testContainsInAnyOrderFalse(PAssertTest.java:442)
        at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
        at 
sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62)
        at 
sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
        at java.lang.reflect.Method.invoke(Method.java:498)
        at 
org.junit.runners.model.FrameworkMethod$1.runReflectiveCall(FrameworkMethod.java:59)
        at 
org.junit.internal.runners.model.ReflectiveCallable.run(ReflectiveCallable.java:12)
        at 
org.junit.runners.model.FrameworkMethod.invokeExplosively(FrameworkMethod.java:56)
        at 
org.junit.internal.runners.statements.InvokeMethod.evaluate(InvokeMethod.java:17)
        at 
org.apache.beam.sdk.testing.TestPipeline$1.evaluate(TestPipeline.java:319)
        at 
org.junit.rules.ExpectedException$ExpectedExceptionStatement.evaluate(ExpectedException.java:265)
        at 
org.junit.runners.BlockJUnit4ClassRunner$1.evaluate(BlockJUnit4ClassRunner.java:100)
        at org.junit.runners.ParentRunner.runLeaf(ParentRunner.java:349)
        at 
org.junit.runners.BlockJUnit4ClassRunner.runChild(BlockJUnit4ClassRunner.java:103)
        at 
org.junit.runners.BlockJUnit4ClassRunner.runChild(BlockJUnit4ClassRunner.java:63)
        at org.junit.runners.ParentRunner$3.run(ParentRunner.java:314)
        at org.junit.runners.ParentRunner$1.schedule(ParentRunner.java:79)
        at org.junit.runners.ParentRunner.runChildren(ParentRunner.java:312)
        at org.junit.runners.ParentRunner.access$100(ParentRunner.java:66)
        at org.junit.runners.ParentRunner$2.evaluate(ParentRunner.java:292)
        at org.junit.runners.ParentRunner.run(ParentRunner.java:396)
        at 
org.gradle.api.internal.tasks.testing.junit.JUnitTestClassExecutor.runTestClass(JUnitTestClassExecutor.java:106)
        at 
org.gradle.api.internal.tasks.testing.junit.JUnitTestClassExecutor.execute(JUnitTestClassExecutor.java:58)
        at 
org.gradle.api.internal.tasks.testing.junit.JUnitTestClassExecutor.execute(JUnitTestClassExecutor.java:38)
        at 
org.gradle.api.internal.tasks.testing.junit.AbstractJUnitTestClassProcessor.processTestClass(AbstractJUnitTestClassProcessor.java:66)
        at 
org.gradle.api.internal.tasks.testing.SuiteTestClassProcessor.processTestClass(SuiteTestClassProcessor.java:51)
        at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
        at 
sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62)
        at 
sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
        at java.lang.reflect.Method.invoke(Method.java:498)
        at 
org.gradle.internal.dispatch.ReflectionDispatch.dispatch(ReflectionDispatch.java:35)
        at 
org.gradle.internal.dispatch.ReflectionDispatch.dispatch(ReflectionDispatch.java:24)
        at 
org.gradle.internal.dispatch.ContextClassLoaderDispatch.dispatch(ContextClassLoaderDispatch.java:32)
        at 
org.gradle.internal.dispatch.ProxyDispatchAdapter$DispatchingInvocationHandler.invoke(ProxyDispatchAdapter.java:93)
        at com.sun.proxy.$Proxy2.processTestClass(Unknown Source)
        at 
org.gradle.api.internal.tasks.testing.worker.TestWorker.processTestClass(TestWorker.java:117)
        at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
        at 
sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62)
        at 
sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
        at java.lang.reflect.Method.invoke(Method.java:498)
        at 
org.gradle.internal.dispatch.ReflectionDispatch.dispatch(ReflectionDispatch.java:35)
        at 
org.gradle.internal.dispatch.ReflectionDispatch.dispatch(ReflectionDispatch.java:24)
        at 
org.gradle.internal.remote.internal.hub.MessageHubBackedObjectConnection$DispatchWrapper.dispatch(MessageHubBackedObjectConnection.java:155)
        at 
org.gradle.internal.remote.internal.hub.MessageHubBackedObjectConnection$DispatchWrapper.dispatch(MessageHubBackedObjectConnection.java:137)
        at 
org.gradle.internal.remote.internal.hub.MessageHub$Handler.run(MessageHub.java:404)
        at 
org.gradle.internal.concurrent.ExecutorPolicy$CatchAndRecordFailures.onExecute(ExecutorPolicy.java:63)
        at 
org.gradle.internal.concurrent.ManagedExecutorImpl$1.run(ManagedExecutorImpl.java:46)
        at 
java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1149)
        at 
java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:624)
        at 
org.gradle.internal.concurrent.ThreadFactoryImpl$ManagedThreadRunnable.run(ThreadFactoryImpl.java:55)
Caused by: java.lang.AssertionError: 
Expected: iterable over [<2>, <1>, <4>, <3>, <7>] in any order
     but: No item matches: <7> in [<1>, <2>, <3>, <4>]
        at org.hamcrest.MatcherAssert.assertThat(MatcherAssert.java:20)
        at org.junit.Assert.assertThat(Assert.java:966)
        at org.junit.Assert.assertThat(Assert.java:931)
        at 
org.apache.beam.sdk.testing.PAssert$AssertContainsInAnyOrder.apply(PAssert.java:1346)
        at 
org.apache.beam.sdk.testing.PAssert$AssertContainsInAnyOrder.apply(PAssert.java:1325)
        at 
org.apache.beam.sdk.testing.PAssert$CheckRelationAgainstExpected.apply(PAssert.java:993)
        at 
org.apache.beam.sdk.testing.PAssert$CheckRelationAgainstExpected.apply(PAssert.java:973)
        at org.apache.beam.sdk.testing.PAssert.doChecks(PAssert.java:1274)
        at 
org.apache.beam.sdk.testing.PAssert$GroupedValuesCheckerDoFn.processElement(PAssert.java:1241)
        at 
org.apache.beam.sdk.testing.PAssert$GroupedValuesCheckerDoFn$DoFnInvoker.invokeProcessElement(Unknown
 Source)
        at 
org.apache.beam.fn.harness.FnApiDoFnRunner.processElement(FnApiDoFnRunner.java:227)
        at 
org.apache.beam.fn.harness.FnApiDoFnRunner.outputTo(FnApiDoFnRunner.java:268)
        at 
org.apache.beam.fn.harness.FnApiDoFnRunner.access$300(FnApiDoFnRunner.java:75)
        at 
org.apache.beam.fn.harness.FnApiDoFnRunner$ProcessBundleContext.output(FnApiDoFnRunner.java:515)
        at 
org.apache.beam.sdk.transforms.DoFnOutputReceivers$WindowedContextOutputReceiver.output(DoFnOutputReceivers.java:73)
        at 
org.apache.beam.sdk.transforms.MapElements$1.processElement(MapElements.java:122)
        at 
org.apache.beam.sdk.transforms.MapElements$1$DoFnInvoker.invokeProcessElement(Unknown
 Source)
        at 
org.apache.beam.fn.harness.FnApiDoFnRunner.processElement(FnApiDoFnRunner.java:227)
        at 
org.apache.beam.fn.harness.FnApiDoFnRunner.outputTo(FnApiDoFnRunner.java:268)
        at 
org.apache.beam.fn.harness.FnApiDoFnRunner.access$300(FnApiDoFnRunner.java:75)
        at 
org.apache.beam.fn.harness.FnApiDoFnRunner$ProcessBundleContext.output(FnApiDoFnRunner.java:515)
        at 
org.apache.beam.sdk.testing.PAssert$ConcatFn.processElement(PAssert.java:1076)
        at 
org.apache.beam.sdk.testing.PAssert$ConcatFn$DoFnInvoker.invokeProcessElement(Unknown
 Source)
        at 
org.apache.beam.fn.harness.FnApiDoFnRunner.processElement(FnApiDoFnRunner.java:227)
        at 
org.apache.beam.fn.harness.FnApiDoFnRunner.outputTo(FnApiDoFnRunner.java:268)
        at 
org.apache.beam.fn.harness.FnApiDoFnRunner.access$300(FnApiDoFnRunner.java:75)
        at 
org.apache.beam.fn.harness.FnApiDoFnRunner$ProcessBundleContext.output(FnApiDoFnRunner.java:515)
        at 
org.apache.beam.sdk.transforms.DoFnOutputReceivers$WindowedContextOutputReceiver.output(DoFnOutputReceivers.java:73)
        at 
org.apache.beam.sdk.transforms.MapElements$1.processElement(MapElements.java:122)
        at 
org.apache.beam.sdk.transforms.MapElements$1$DoFnInvoker.invokeProcessElement(Unknown
 Source)
        at 
org.apache.beam.fn.harness.FnApiDoFnRunner.processElement(FnApiDoFnRunner.java:227)
        at 
org.apache.beam.fn.harness.data.QueueingBeamFnDataClient.drainAndBlock(QueueingBeamFnDataClient.java:102)
        at 
org.apache.beam.fn.harness.control.ProcessBundleHandler.processBundle(ProcessBundleHandler.java:308)
        at 
org.apache.beam.fn.harness.control.BeamFnControlClient.delegateOnInstructionRequestType(BeamFnControlClient.java:160)
        at 
org.apache.beam.fn.harness.control.BeamFnControlClient.lambda$processInstructionRequests$0(BeamFnControlClient.java:144)
        at 
java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1149)
        at 
java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:624)
        at java.lang.Thread.run(Thread.java:748)

        at 
org.apache.beam.runners.fnexecution.control.FnApiControlClient$ResponseStreamObserver.onNext(FnApiControlClient.java:157)
        at 
org.apache.beam.runners.fnexecution.control.FnApiControlClient$ResponseStreamObserver.onNext(FnApiControlClient.java:140)
        at 
org.apache.beam.vendor.grpc.v1p13p1.io.grpc.stub.ServerCalls$StreamingServerCallHandler$StreamingServerCallListener.onMessage(ServerCalls.java:248)
        at 
org.apache.beam.vendor.grpc.v1p13p1.io.grpc.ForwardingServerCallListener.onMessage(ForwardingServerCallListener.java:33)
        at 
org.apache.beam.vendor.grpc.v1p13p1.io.grpc.Contexts$ContextualizedServerCallListener.onMessage(Contexts.java:76)
        at 
org.apache.beam.vendor.grpc.v1p13p1.io.grpc.internal.ServerCallImpl$ServerStreamListenerImpl.messagesAvailable(ServerCallImpl.java:263)
        at 
org.apache.beam.vendor.grpc.v1p13p1.io.grpc.internal.ServerImpl$JumpToApplicationThreadServerStreamListener$1MessagesAvailable.runInContext(ServerImpl.java:683)
        at 
org.apache.beam.vendor.grpc.v1p13p1.io.grpc.internal.ContextRunnable.run(ContextRunnable.java:37)
        at 
org.apache.beam.vendor.grpc.v1p13p1.io.grpc.internal.SerializingExecutor.run(SerializingExecutor.java:123)
        at 
java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1142)
        at 
java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:617)
        at java.lang.Thread.run(Thread.java:745)
{code}

  was:
https://builds.apache.org/job/beam_PostCommit_Java_ValidatesRunner_PortabilityApi_Dataflow/385/
{code}
INFO: Job 2018-12-26_16_45_48-1113656764334597924 failed with status FAILED.
{code}

https://pantheon.corp.google.com/dataflow/jobsDetail/locations/us-central1/jobs/2018-12-26_16_45_48-1113656764334597924?project=apache-beam-testing&pli=1
{code}
Workflow failed. Causes: 
S14:PAssert$7/GroupGlobally/GroupDummyAndContents/Read+PAssert$7/GroupGlobally/GroupDummyAndContents/GroupByWindow+PAssert$7/GroupGlobally/Values/Values/Map+PAssert$7/GroupGlobally/ParDo(Concat)+PAssert$7/GetPane/Map+PAssert$7/RunChecks+PAssert$7/VerifyAssertions/ParDo(DefaultConclude)
 failed., A work item was attempted 4 times without success. Each time the 
worker eventually lost contact with the service. The work item was attempted 
on: 
  passerttest0testcontainsi-12261645-jpaz-harness-cnwp,
  passerttest0testcontainsi-12261645-jpaz-harness-cnwp,
  passerttest0testcontainsi-12261645-jpaz-harness-cnwp,
  passerttest0testcontainsi-12261645-jpaz-harness-cnwp
{code}


> :beam-runners-google-cloud-dataflow-java:validatesRunnerFnApiWorkerExecutableStageTest
>  flakey
> ---------------------------------------------------------------------------------------------
>
>                 Key: BEAM-6317
>                 URL: https://issues.apache.org/jira/browse/BEAM-6317
>             Project: Beam
>          Issue Type: Bug
>          Components: test-failures
>            Reporter: Andrew Pilloud
>            Assignee: Boyuan Zhang
>            Priority: Major
>
> https://builds.apache.org/job/beam_PostCommit_Java_ValidatesRunner_PortabilityApi_Dataflow/385/
> {code}
> INFO: Job 2018-12-26_16_45_48-1113656764334597924 failed with status FAILED.
> {code}
> https://pantheon.corp.google.com/dataflow/jobsDetail/locations/us-central1/jobs/2018-12-26_16_45_48-1113656764334597924?project=apache-beam-testing&pli=1
> {code}
> Workflow failed. Causes: 
> S14:PAssert$7/GroupGlobally/GroupDummyAndContents/Read+PAssert$7/GroupGlobally/GroupDummyAndContents/GroupByWindow+PAssert$7/GroupGlobally/Values/Values/Map+PAssert$7/GroupGlobally/ParDo(Concat)+PAssert$7/GetPane/Map+PAssert$7/RunChecks+PAssert$7/VerifyAssertions/ParDo(DefaultConclude)
>  failed., A work item was attempted 4 times without success. Each time the 
> worker eventually lost contact with the service. The work item was attempted 
> on: 
>   passerttest0testcontainsi-12261645-jpaz-harness-cnwp,
>   passerttest0testcontainsi-12261645-jpaz-harness-cnwp,
>   passerttest0testcontainsi-12261645-jpaz-harness-cnwp,
>   passerttest0testcontainsi-12261645-jpaz-harness-cnwp
> {code}
> {code}
> java.util.concurrent.ExecutionException: java.lang.RuntimeException: Error 
> received from SDK harness for instruction -607: 
> org.apache.beam.sdk.util.UserCodeException: java.lang.AssertionError: 
> Create.Values/Read(CreateSource).out: 
> Expected: iterable over [<2>, <1>, <4>, <3>, <7>] in any order
>      but: No item matches: <7> in [<1>, <2>, <3>, <4>]
>       at 
> org.apache.beam.sdk.util.UserCodeException.wrap(UserCodeException.java:34)
>       at 
> org.apache.beam.sdk.testing.PAssert$DefaultConcludeFn$DoFnInvoker.invokeProcessElement(Unknown
>  Source)
>       at 
> org.apache.beam.fn.harness.FnApiDoFnRunner.processElement(FnApiDoFnRunner.java:227)
>       at 
> org.apache.beam.fn.harness.FnApiDoFnRunner.outputTo(FnApiDoFnRunner.java:268)
>       at 
> org.apache.beam.fn.harness.FnApiDoFnRunner.access$300(FnApiDoFnRunner.java:75)
>       at 
> org.apache.beam.fn.harness.FnApiDoFnRunner$ProcessBundleContext.output(FnApiDoFnRunner.java:515)
>       at 
> org.apache.beam.sdk.testing.PAssert$GroupedValuesCheckerDoFn.processElement(PAssert.java:1241)
>       at 
> org.apache.beam.sdk.testing.PAssert$GroupedValuesCheckerDoFn$DoFnInvoker.invokeProcessElement(Unknown
>  Source)
>       at 
> org.apache.beam.fn.harness.FnApiDoFnRunner.processElement(FnApiDoFnRunner.java:227)
>       at 
> org.apache.beam.fn.harness.FnApiDoFnRunner.outputTo(FnApiDoFnRunner.java:268)
>       at 
> org.apache.beam.fn.harness.FnApiDoFnRunner.access$300(FnApiDoFnRunner.java:75)
>       at 
> org.apache.beam.fn.harness.FnApiDoFnRunner$ProcessBundleContext.output(FnApiDoFnRunner.java:515)
>       at 
> org.apache.beam.sdk.transforms.DoFnOutputReceivers$WindowedContextOutputReceiver.output(DoFnOutputReceivers.java:73)
>       at 
> org.apache.beam.sdk.transforms.MapElements$1.processElement(MapElements.java:122)
>       at 
> org.apache.beam.sdk.transforms.MapElements$1$DoFnInvoker.invokeProcessElement(Unknown
>  Source)
>       at 
> org.apache.beam.fn.harness.FnApiDoFnRunner.processElement(FnApiDoFnRunner.java:227)
>       at 
> org.apache.beam.fn.harness.FnApiDoFnRunner.outputTo(FnApiDoFnRunner.java:268)
>       at 
> org.apache.beam.fn.harness.FnApiDoFnRunner.access$300(FnApiDoFnRunner.java:75)
>       at 
> org.apache.beam.fn.harness.FnApiDoFnRunner$ProcessBundleContext.output(FnApiDoFnRunner.java:515)
>       at 
> org.apache.beam.sdk.testing.PAssert$ConcatFn.processElement(PAssert.java:1076)
>       at 
> org.apache.beam.sdk.testing.PAssert$ConcatFn$DoFnInvoker.invokeProcessElement(Unknown
>  Source)
>       at 
> org.apache.beam.fn.harness.FnApiDoFnRunner.processElement(FnApiDoFnRunner.java:227)
>       at 
> org.apache.beam.fn.harness.FnApiDoFnRunner.outputTo(FnApiDoFnRunner.java:268)
>       at 
> org.apache.beam.fn.harness.FnApiDoFnRunner.access$300(FnApiDoFnRunner.java:75)
>       at 
> org.apache.beam.fn.harness.FnApiDoFnRunner$ProcessBundleContext.output(FnApiDoFnRunner.java:515)
>       at 
> org.apache.beam.sdk.transforms.DoFnOutputReceivers$WindowedContextOutputReceiver.output(DoFnOutputReceivers.java:73)
>       at 
> org.apache.beam.sdk.transforms.MapElements$1.processElement(MapElements.java:122)
>       at 
> org.apache.beam.sdk.transforms.MapElements$1$DoFnInvoker.invokeProcessElement(Unknown
>  Source)
>       at 
> org.apache.beam.fn.harness.FnApiDoFnRunner.processElement(FnApiDoFnRunner.java:227)
>       at 
> org.apache.beam.fn.harness.data.QueueingBeamFnDataClient.drainAndBlock(QueueingBeamFnDataClient.java:102)
>       at 
> org.apache.beam.fn.harness.control.ProcessBundleHandler.processBundle(ProcessBundleHandler.java:308)
>       at 
> org.apache.beam.fn.harness.control.BeamFnControlClient.delegateOnInstructionRequestType(BeamFnControlClient.java:160)
>       at 
> org.apache.beam.fn.harness.control.BeamFnControlClient.lambda$processInstructionRequests$0(BeamFnControlClient.java:144)
>       at 
> java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1149)
>       at 
> java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:624)
>       at java.lang.Thread.run(Thread.java:748)
> Caused by: java.lang.AssertionError: Create.Values/Read(CreateSource).out: 
> Expected: iterable over [<2>, <1>, <4>, <3>, <7>] in any order
>      but: No item matches: <7> in [<1>, <2>, <3>, <4>]
>       at 
> org.apache.beam.sdk.testing.PAssert$PAssertionSite.capture(PAssert.java:168)
>       at org.apache.beam.sdk.testing.PAssert.that(PAssert.java:392)
>       at org.apache.beam.sdk.testing.PAssert.that(PAssert.java:384)
>       at 
> org.apache.beam.sdk.testing.PAssertTest.testContainsInAnyOrderFalse(PAssertTest.java:442)
>       at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
>       at 
> sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62)
>       at 
> sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
>       at java.lang.reflect.Method.invoke(Method.java:498)
>       at 
> org.junit.runners.model.FrameworkMethod$1.runReflectiveCall(FrameworkMethod.java:59)
>       at 
> org.junit.internal.runners.model.ReflectiveCallable.run(ReflectiveCallable.java:12)
>       at 
> org.junit.runners.model.FrameworkMethod.invokeExplosively(FrameworkMethod.java:56)
>       at 
> org.junit.internal.runners.statements.InvokeMethod.evaluate(InvokeMethod.java:17)
>       at 
> org.apache.beam.sdk.testing.TestPipeline$1.evaluate(TestPipeline.java:319)
>       at 
> org.junit.rules.ExpectedException$ExpectedExceptionStatement.evaluate(ExpectedException.java:265)
>       at 
> org.junit.runners.BlockJUnit4ClassRunner$1.evaluate(BlockJUnit4ClassRunner.java:100)
>       at org.junit.runners.ParentRunner.runLeaf(ParentRunner.java:349)
>       at 
> org.junit.runners.BlockJUnit4ClassRunner.runChild(BlockJUnit4ClassRunner.java:103)
>       at 
> org.junit.runners.BlockJUnit4ClassRunner.runChild(BlockJUnit4ClassRunner.java:63)
>       at org.junit.runners.ParentRunner$3.run(ParentRunner.java:314)
>       at org.junit.runners.ParentRunner$1.schedule(ParentRunner.java:79)
>       at org.junit.runners.ParentRunner.runChildren(ParentRunner.java:312)
>       at org.junit.runners.ParentRunner.access$100(ParentRunner.java:66)
>       at org.junit.runners.ParentRunner$2.evaluate(ParentRunner.java:292)
>       at org.junit.runners.ParentRunner.run(ParentRunner.java:396)
>       at 
> org.gradle.api.internal.tasks.testing.junit.JUnitTestClassExecutor.runTestClass(JUnitTestClassExecutor.java:106)
>       at 
> org.gradle.api.internal.tasks.testing.junit.JUnitTestClassExecutor.execute(JUnitTestClassExecutor.java:58)
>       at 
> org.gradle.api.internal.tasks.testing.junit.JUnitTestClassExecutor.execute(JUnitTestClassExecutor.java:38)
>       at 
> org.gradle.api.internal.tasks.testing.junit.AbstractJUnitTestClassProcessor.processTestClass(AbstractJUnitTestClassProcessor.java:66)
>       at 
> org.gradle.api.internal.tasks.testing.SuiteTestClassProcessor.processTestClass(SuiteTestClassProcessor.java:51)
>       at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
>       at 
> sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62)
>       at 
> sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
>       at java.lang.reflect.Method.invoke(Method.java:498)
>       at 
> org.gradle.internal.dispatch.ReflectionDispatch.dispatch(ReflectionDispatch.java:35)
>       at 
> org.gradle.internal.dispatch.ReflectionDispatch.dispatch(ReflectionDispatch.java:24)
>       at 
> org.gradle.internal.dispatch.ContextClassLoaderDispatch.dispatch(ContextClassLoaderDispatch.java:32)
>       at 
> org.gradle.internal.dispatch.ProxyDispatchAdapter$DispatchingInvocationHandler.invoke(ProxyDispatchAdapter.java:93)
>       at com.sun.proxy.$Proxy2.processTestClass(Unknown Source)
>       at 
> org.gradle.api.internal.tasks.testing.worker.TestWorker.processTestClass(TestWorker.java:117)
>       at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
>       at 
> sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62)
>       at 
> sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
>       at java.lang.reflect.Method.invoke(Method.java:498)
>       at 
> org.gradle.internal.dispatch.ReflectionDispatch.dispatch(ReflectionDispatch.java:35)
>       at 
> org.gradle.internal.dispatch.ReflectionDispatch.dispatch(ReflectionDispatch.java:24)
>       at 
> org.gradle.internal.remote.internal.hub.MessageHubBackedObjectConnection$DispatchWrapper.dispatch(MessageHubBackedObjectConnection.java:155)
>       at 
> org.gradle.internal.remote.internal.hub.MessageHubBackedObjectConnection$DispatchWrapper.dispatch(MessageHubBackedObjectConnection.java:137)
>       at 
> org.gradle.internal.remote.internal.hub.MessageHub$Handler.run(MessageHub.java:404)
>       at 
> org.gradle.internal.concurrent.ExecutorPolicy$CatchAndRecordFailures.onExecute(ExecutorPolicy.java:63)
>       at 
> org.gradle.internal.concurrent.ManagedExecutorImpl$1.run(ManagedExecutorImpl.java:46)
>       at 
> java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1149)
>       at 
> java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:624)
>       at 
> org.gradle.internal.concurrent.ThreadFactoryImpl$ManagedThreadRunnable.run(ThreadFactoryImpl.java:55)
> Caused by: java.lang.AssertionError: 
> Expected: iterable over [<2>, <1>, <4>, <3>, <7>] in any order
>      but: No item matches: <7> in [<1>, <2>, <3>, <4>]
>       at org.hamcrest.MatcherAssert.assertThat(MatcherAssert.java:20)
>       at org.junit.Assert.assertThat(Assert.java:966)
>       at org.junit.Assert.assertThat(Assert.java:931)
>       at 
> org.apache.beam.sdk.testing.PAssert$AssertContainsInAnyOrder.apply(PAssert.java:1346)
>       at 
> org.apache.beam.sdk.testing.PAssert$AssertContainsInAnyOrder.apply(PAssert.java:1325)
>       at 
> org.apache.beam.sdk.testing.PAssert$CheckRelationAgainstExpected.apply(PAssert.java:993)
>       at 
> org.apache.beam.sdk.testing.PAssert$CheckRelationAgainstExpected.apply(PAssert.java:973)
>       at org.apache.beam.sdk.testing.PAssert.doChecks(PAssert.java:1274)
>       at 
> org.apache.beam.sdk.testing.PAssert$GroupedValuesCheckerDoFn.processElement(PAssert.java:1241)
>       at 
> org.apache.beam.sdk.testing.PAssert$GroupedValuesCheckerDoFn$DoFnInvoker.invokeProcessElement(Unknown
>  Source)
>       at 
> org.apache.beam.fn.harness.FnApiDoFnRunner.processElement(FnApiDoFnRunner.java:227)
>       at 
> org.apache.beam.fn.harness.FnApiDoFnRunner.outputTo(FnApiDoFnRunner.java:268)
>       at 
> org.apache.beam.fn.harness.FnApiDoFnRunner.access$300(FnApiDoFnRunner.java:75)
>       at 
> org.apache.beam.fn.harness.FnApiDoFnRunner$ProcessBundleContext.output(FnApiDoFnRunner.java:515)
>       at 
> org.apache.beam.sdk.transforms.DoFnOutputReceivers$WindowedContextOutputReceiver.output(DoFnOutputReceivers.java:73)
>       at 
> org.apache.beam.sdk.transforms.MapElements$1.processElement(MapElements.java:122)
>       at 
> org.apache.beam.sdk.transforms.MapElements$1$DoFnInvoker.invokeProcessElement(Unknown
>  Source)
>       at 
> org.apache.beam.fn.harness.FnApiDoFnRunner.processElement(FnApiDoFnRunner.java:227)
>       at 
> org.apache.beam.fn.harness.FnApiDoFnRunner.outputTo(FnApiDoFnRunner.java:268)
>       at 
> org.apache.beam.fn.harness.FnApiDoFnRunner.access$300(FnApiDoFnRunner.java:75)
>       at 
> org.apache.beam.fn.harness.FnApiDoFnRunner$ProcessBundleContext.output(FnApiDoFnRunner.java:515)
>       at 
> org.apache.beam.sdk.testing.PAssert$ConcatFn.processElement(PAssert.java:1076)
>       at 
> org.apache.beam.sdk.testing.PAssert$ConcatFn$DoFnInvoker.invokeProcessElement(Unknown
>  Source)
>       at 
> org.apache.beam.fn.harness.FnApiDoFnRunner.processElement(FnApiDoFnRunner.java:227)
>       at 
> org.apache.beam.fn.harness.FnApiDoFnRunner.outputTo(FnApiDoFnRunner.java:268)
>       at 
> org.apache.beam.fn.harness.FnApiDoFnRunner.access$300(FnApiDoFnRunner.java:75)
>       at 
> org.apache.beam.fn.harness.FnApiDoFnRunner$ProcessBundleContext.output(FnApiDoFnRunner.java:515)
>       at 
> org.apache.beam.sdk.transforms.DoFnOutputReceivers$WindowedContextOutputReceiver.output(DoFnOutputReceivers.java:73)
>       at 
> org.apache.beam.sdk.transforms.MapElements$1.processElement(MapElements.java:122)
>       at 
> org.apache.beam.sdk.transforms.MapElements$1$DoFnInvoker.invokeProcessElement(Unknown
>  Source)
>       at 
> org.apache.beam.fn.harness.FnApiDoFnRunner.processElement(FnApiDoFnRunner.java:227)
>       at 
> org.apache.beam.fn.harness.data.QueueingBeamFnDataClient.drainAndBlock(QueueingBeamFnDataClient.java:102)
>       at 
> org.apache.beam.fn.harness.control.ProcessBundleHandler.processBundle(ProcessBundleHandler.java:308)
>       at 
> org.apache.beam.fn.harness.control.BeamFnControlClient.delegateOnInstructionRequestType(BeamFnControlClient.java:160)
>       at 
> org.apache.beam.fn.harness.control.BeamFnControlClient.lambda$processInstructionRequests$0(BeamFnControlClient.java:144)
>       at 
> java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1149)
>       at 
> java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:624)
>       at java.lang.Thread.run(Thread.java:748)
>       at 
> java.util.concurrent.CompletableFuture.reportGet(CompletableFuture.java:357)
>       at 
> java.util.concurrent.CompletableFuture.get(CompletableFuture.java:1895)
>       at org.apache.beam.sdk.util.MoreFutures.get(MoreFutures.java:57)
>       at 
> org.apache.beam.runners.dataflow.worker.fn.control.RegisterAndProcessBundleOperation.finish(RegisterAndProcessBundleOperation.java:280)
>       at 
> org.apache.beam.runners.dataflow.worker.util.common.worker.MapTaskExecutor.execute(MapTaskExecutor.java:84)
>       at 
> org.apache.beam.runners.dataflow.worker.fn.control.BeamFnMapTaskExecutor.execute(BeamFnMapTaskExecutor.java:130)
>       at 
> org.apache.beam.runners.dataflow.worker.BatchDataflowWorker.executeWork(BatchDataflowWorker.java:409)
>       at 
> org.apache.beam.runners.dataflow.worker.BatchDataflowWorker.doWork(BatchDataflowWorker.java:378)
>       at 
> org.apache.beam.runners.dataflow.worker.BatchDataflowWorker.getAndPerformWork(BatchDataflowWorker.java:306)
>       at 
> org.apache.beam.runners.dataflow.worker.DataflowRunnerHarness.start(DataflowRunnerHarness.java:195)
>       at 
> org.apache.beam.runners.dataflow.worker.DataflowRunnerHarness.main(DataflowRunnerHarness.java:123)
>       Suppressed: java.lang.IllegalStateException: Already closed.
>               at 
> org.apache.beam.sdk.fn.data.BeamFnDataBufferingOutboundObserver.close(BeamFnDataBufferingOutboundObserver.java:95)
>               at 
> org.apache.beam.runners.dataflow.worker.fn.data.RemoteGrpcPortWriteOperation.abort(RemoteGrpcPortWriteOperation.java:215)
>               at 
> org.apache.beam.runners.dataflow.worker.util.common.worker.MapTaskExecutor.execute(MapTaskExecutor.java:90)
>               ... 6 more
> Caused by: java.lang.RuntimeException: Error received from SDK harness for 
> instruction -607: org.apache.beam.sdk.util.UserCodeException: 
> java.lang.AssertionError: Create.Values/Read(CreateSource).out: 
> Expected: iterable over [<2>, <1>, <4>, <3>, <7>] in any order
>      but: No item matches: <7> in [<1>, <2>, <3>, <4>]
>       at 
> org.apache.beam.sdk.util.UserCodeException.wrap(UserCodeException.java:34)
>       at 
> org.apache.beam.sdk.testing.PAssert$DefaultConcludeFn$DoFnInvoker.invokeProcessElement(Unknown
>  Source)
>       at 
> org.apache.beam.fn.harness.FnApiDoFnRunner.processElement(FnApiDoFnRunner.java:227)
>       at 
> org.apache.beam.fn.harness.FnApiDoFnRunner.outputTo(FnApiDoFnRunner.java:268)
>       at 
> org.apache.beam.fn.harness.FnApiDoFnRunner.access$300(FnApiDoFnRunner.java:75)
>       at 
> org.apache.beam.fn.harness.FnApiDoFnRunner$ProcessBundleContext.output(FnApiDoFnRunner.java:515)
>       at 
> org.apache.beam.sdk.testing.PAssert$GroupedValuesCheckerDoFn.processElement(PAssert.java:1241)
>       at 
> org.apache.beam.sdk.testing.PAssert$GroupedValuesCheckerDoFn$DoFnInvoker.invokeProcessElement(Unknown
>  Source)
>       at 
> org.apache.beam.fn.harness.FnApiDoFnRunner.processElement(FnApiDoFnRunner.java:227)
>       at 
> org.apache.beam.fn.harness.FnApiDoFnRunner.outputTo(FnApiDoFnRunner.java:268)
>       at 
> org.apache.beam.fn.harness.FnApiDoFnRunner.access$300(FnApiDoFnRunner.java:75)
>       at 
> org.apache.beam.fn.harness.FnApiDoFnRunner$ProcessBundleContext.output(FnApiDoFnRunner.java:515)
>       at 
> org.apache.beam.sdk.transforms.DoFnOutputReceivers$WindowedContextOutputReceiver.output(DoFnOutputReceivers.java:73)
>       at 
> org.apache.beam.sdk.transforms.MapElements$1.processElement(MapElements.java:122)
>       at 
> org.apache.beam.sdk.transforms.MapElements$1$DoFnInvoker.invokeProcessElement(Unknown
>  Source)
>       at 
> org.apache.beam.fn.harness.FnApiDoFnRunner.processElement(FnApiDoFnRunner.java:227)
>       at 
> org.apache.beam.fn.harness.FnApiDoFnRunner.outputTo(FnApiDoFnRunner.java:268)
>       at 
> org.apache.beam.fn.harness.FnApiDoFnRunner.access$300(FnApiDoFnRunner.java:75)
>       at 
> org.apache.beam.fn.harness.FnApiDoFnRunner$ProcessBundleContext.output(FnApiDoFnRunner.java:515)
>       at 
> org.apache.beam.sdk.testing.PAssert$ConcatFn.processElement(PAssert.java:1076)
>       at 
> org.apache.beam.sdk.testing.PAssert$ConcatFn$DoFnInvoker.invokeProcessElement(Unknown
>  Source)
>       at 
> org.apache.beam.fn.harness.FnApiDoFnRunner.processElement(FnApiDoFnRunner.java:227)
>       at 
> org.apache.beam.fn.harness.FnApiDoFnRunner.outputTo(FnApiDoFnRunner.java:268)
>       at 
> org.apache.beam.fn.harness.FnApiDoFnRunner.access$300(FnApiDoFnRunner.java:75)
>       at 
> org.apache.beam.fn.harness.FnApiDoFnRunner$ProcessBundleContext.output(FnApiDoFnRunner.java:515)
>       at 
> org.apache.beam.sdk.transforms.DoFnOutputReceivers$WindowedContextOutputReceiver.output(DoFnOutputReceivers.java:73)
>       at 
> org.apache.beam.sdk.transforms.MapElements$1.processElement(MapElements.java:122)
>       at 
> org.apache.beam.sdk.transforms.MapElements$1$DoFnInvoker.invokeProcessElement(Unknown
>  Source)
>       at 
> org.apache.beam.fn.harness.FnApiDoFnRunner.processElement(FnApiDoFnRunner.java:227)
>       at 
> org.apache.beam.fn.harness.data.QueueingBeamFnDataClient.drainAndBlock(QueueingBeamFnDataClient.java:102)
>       at 
> org.apache.beam.fn.harness.control.ProcessBundleHandler.processBundle(ProcessBundleHandler.java:308)
>       at 
> org.apache.beam.fn.harness.control.BeamFnControlClient.delegateOnInstructionRequestType(BeamFnControlClient.java:160)
>       at 
> org.apache.beam.fn.harness.control.BeamFnControlClient.lambda$processInstructionRequests$0(BeamFnControlClient.java:144)
>       at 
> java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1149)
>       at 
> java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:624)
>       at java.lang.Thread.run(Thread.java:748)
> Caused by: java.lang.AssertionError: Create.Values/Read(CreateSource).out: 
> Expected: iterable over [<2>, <1>, <4>, <3>, <7>] in any order
>      but: No item matches: <7> in [<1>, <2>, <3>, <4>]
>       at 
> org.apache.beam.sdk.testing.PAssert$PAssertionSite.capture(PAssert.java:168)
>       at org.apache.beam.sdk.testing.PAssert.that(PAssert.java:392)
>       at org.apache.beam.sdk.testing.PAssert.that(PAssert.java:384)
>       at 
> org.apache.beam.sdk.testing.PAssertTest.testContainsInAnyOrderFalse(PAssertTest.java:442)
>       at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
>       at 
> sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62)
>       at 
> sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
>       at java.lang.reflect.Method.invoke(Method.java:498)
>       at 
> org.junit.runners.model.FrameworkMethod$1.runReflectiveCall(FrameworkMethod.java:59)
>       at 
> org.junit.internal.runners.model.ReflectiveCallable.run(ReflectiveCallable.java:12)
>       at 
> org.junit.runners.model.FrameworkMethod.invokeExplosively(FrameworkMethod.java:56)
>       at 
> org.junit.internal.runners.statements.InvokeMethod.evaluate(InvokeMethod.java:17)
>       at 
> org.apache.beam.sdk.testing.TestPipeline$1.evaluate(TestPipeline.java:319)
>       at 
> org.junit.rules.ExpectedException$ExpectedExceptionStatement.evaluate(ExpectedException.java:265)
>       at 
> org.junit.runners.BlockJUnit4ClassRunner$1.evaluate(BlockJUnit4ClassRunner.java:100)
>       at org.junit.runners.ParentRunner.runLeaf(ParentRunner.java:349)
>       at 
> org.junit.runners.BlockJUnit4ClassRunner.runChild(BlockJUnit4ClassRunner.java:103)
>       at 
> org.junit.runners.BlockJUnit4ClassRunner.runChild(BlockJUnit4ClassRunner.java:63)
>       at org.junit.runners.ParentRunner$3.run(ParentRunner.java:314)
>       at org.junit.runners.ParentRunner$1.schedule(ParentRunner.java:79)
>       at org.junit.runners.ParentRunner.runChildren(ParentRunner.java:312)
>       at org.junit.runners.ParentRunner.access$100(ParentRunner.java:66)
>       at org.junit.runners.ParentRunner$2.evaluate(ParentRunner.java:292)
>       at org.junit.runners.ParentRunner.run(ParentRunner.java:396)
>       at 
> org.gradle.api.internal.tasks.testing.junit.JUnitTestClassExecutor.runTestClass(JUnitTestClassExecutor.java:106)
>       at 
> org.gradle.api.internal.tasks.testing.junit.JUnitTestClassExecutor.execute(JUnitTestClassExecutor.java:58)
>       at 
> org.gradle.api.internal.tasks.testing.junit.JUnitTestClassExecutor.execute(JUnitTestClassExecutor.java:38)
>       at 
> org.gradle.api.internal.tasks.testing.junit.AbstractJUnitTestClassProcessor.processTestClass(AbstractJUnitTestClassProcessor.java:66)
>       at 
> org.gradle.api.internal.tasks.testing.SuiteTestClassProcessor.processTestClass(SuiteTestClassProcessor.java:51)
>       at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
>       at 
> sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62)
>       at 
> sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
>       at java.lang.reflect.Method.invoke(Method.java:498)
>       at 
> org.gradle.internal.dispatch.ReflectionDispatch.dispatch(ReflectionDispatch.java:35)
>       at 
> org.gradle.internal.dispatch.ReflectionDispatch.dispatch(ReflectionDispatch.java:24)
>       at 
> org.gradle.internal.dispatch.ContextClassLoaderDispatch.dispatch(ContextClassLoaderDispatch.java:32)
>       at 
> org.gradle.internal.dispatch.ProxyDispatchAdapter$DispatchingInvocationHandler.invoke(ProxyDispatchAdapter.java:93)
>       at com.sun.proxy.$Proxy2.processTestClass(Unknown Source)
>       at 
> org.gradle.api.internal.tasks.testing.worker.TestWorker.processTestClass(TestWorker.java:117)
>       at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
>       at 
> sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62)
>       at 
> sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
>       at java.lang.reflect.Method.invoke(Method.java:498)
>       at 
> org.gradle.internal.dispatch.ReflectionDispatch.dispatch(ReflectionDispatch.java:35)
>       at 
> org.gradle.internal.dispatch.ReflectionDispatch.dispatch(ReflectionDispatch.java:24)
>       at 
> org.gradle.internal.remote.internal.hub.MessageHubBackedObjectConnection$DispatchWrapper.dispatch(MessageHubBackedObjectConnection.java:155)
>       at 
> org.gradle.internal.remote.internal.hub.MessageHubBackedObjectConnection$DispatchWrapper.dispatch(MessageHubBackedObjectConnection.java:137)
>       at 
> org.gradle.internal.remote.internal.hub.MessageHub$Handler.run(MessageHub.java:404)
>       at 
> org.gradle.internal.concurrent.ExecutorPolicy$CatchAndRecordFailures.onExecute(ExecutorPolicy.java:63)
>       at 
> org.gradle.internal.concurrent.ManagedExecutorImpl$1.run(ManagedExecutorImpl.java:46)
>       at 
> java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1149)
>       at 
> java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:624)
>       at 
> org.gradle.internal.concurrent.ThreadFactoryImpl$ManagedThreadRunnable.run(ThreadFactoryImpl.java:55)
> Caused by: java.lang.AssertionError: 
> Expected: iterable over [<2>, <1>, <4>, <3>, <7>] in any order
>      but: No item matches: <7> in [<1>, <2>, <3>, <4>]
>       at org.hamcrest.MatcherAssert.assertThat(MatcherAssert.java:20)
>       at org.junit.Assert.assertThat(Assert.java:966)
>       at org.junit.Assert.assertThat(Assert.java:931)
>       at 
> org.apache.beam.sdk.testing.PAssert$AssertContainsInAnyOrder.apply(PAssert.java:1346)
>       at 
> org.apache.beam.sdk.testing.PAssert$AssertContainsInAnyOrder.apply(PAssert.java:1325)
>       at 
> org.apache.beam.sdk.testing.PAssert$CheckRelationAgainstExpected.apply(PAssert.java:993)
>       at 
> org.apache.beam.sdk.testing.PAssert$CheckRelationAgainstExpected.apply(PAssert.java:973)
>       at org.apache.beam.sdk.testing.PAssert.doChecks(PAssert.java:1274)
>       at 
> org.apache.beam.sdk.testing.PAssert$GroupedValuesCheckerDoFn.processElement(PAssert.java:1241)
>       at 
> org.apache.beam.sdk.testing.PAssert$GroupedValuesCheckerDoFn$DoFnInvoker.invokeProcessElement(Unknown
>  Source)
>       at 
> org.apache.beam.fn.harness.FnApiDoFnRunner.processElement(FnApiDoFnRunner.java:227)
>       at 
> org.apache.beam.fn.harness.FnApiDoFnRunner.outputTo(FnApiDoFnRunner.java:268)
>       at 
> org.apache.beam.fn.harness.FnApiDoFnRunner.access$300(FnApiDoFnRunner.java:75)
>       at 
> org.apache.beam.fn.harness.FnApiDoFnRunner$ProcessBundleContext.output(FnApiDoFnRunner.java:515)
>       at 
> org.apache.beam.sdk.transforms.DoFnOutputReceivers$WindowedContextOutputReceiver.output(DoFnOutputReceivers.java:73)
>       at 
> org.apache.beam.sdk.transforms.MapElements$1.processElement(MapElements.java:122)
>       at 
> org.apache.beam.sdk.transforms.MapElements$1$DoFnInvoker.invokeProcessElement(Unknown
>  Source)
>       at 
> org.apache.beam.fn.harness.FnApiDoFnRunner.processElement(FnApiDoFnRunner.java:227)
>       at 
> org.apache.beam.fn.harness.FnApiDoFnRunner.outputTo(FnApiDoFnRunner.java:268)
>       at 
> org.apache.beam.fn.harness.FnApiDoFnRunner.access$300(FnApiDoFnRunner.java:75)
>       at 
> org.apache.beam.fn.harness.FnApiDoFnRunner$ProcessBundleContext.output(FnApiDoFnRunner.java:515)
>       at 
> org.apache.beam.sdk.testing.PAssert$ConcatFn.processElement(PAssert.java:1076)
>       at 
> org.apache.beam.sdk.testing.PAssert$ConcatFn$DoFnInvoker.invokeProcessElement(Unknown
>  Source)
>       at 
> org.apache.beam.fn.harness.FnApiDoFnRunner.processElement(FnApiDoFnRunner.java:227)
>       at 
> org.apache.beam.fn.harness.FnApiDoFnRunner.outputTo(FnApiDoFnRunner.java:268)
>       at 
> org.apache.beam.fn.harness.FnApiDoFnRunner.access$300(FnApiDoFnRunner.java:75)
>       at 
> org.apache.beam.fn.harness.FnApiDoFnRunner$ProcessBundleContext.output(FnApiDoFnRunner.java:515)
>       at 
> org.apache.beam.sdk.transforms.DoFnOutputReceivers$WindowedContextOutputReceiver.output(DoFnOutputReceivers.java:73)
>       at 
> org.apache.beam.sdk.transforms.MapElements$1.processElement(MapElements.java:122)
>       at 
> org.apache.beam.sdk.transforms.MapElements$1$DoFnInvoker.invokeProcessElement(Unknown
>  Source)
>       at 
> org.apache.beam.fn.harness.FnApiDoFnRunner.processElement(FnApiDoFnRunner.java:227)
>       at 
> org.apache.beam.fn.harness.data.QueueingBeamFnDataClient.drainAndBlock(QueueingBeamFnDataClient.java:102)
>       at 
> org.apache.beam.fn.harness.control.ProcessBundleHandler.processBundle(ProcessBundleHandler.java:308)
>       at 
> org.apache.beam.fn.harness.control.BeamFnControlClient.delegateOnInstructionRequestType(BeamFnControlClient.java:160)
>       at 
> org.apache.beam.fn.harness.control.BeamFnControlClient.lambda$processInstructionRequests$0(BeamFnControlClient.java:144)
>       at 
> java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1149)
>       at 
> java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:624)
>       at java.lang.Thread.run(Thread.java:748)
>       at 
> org.apache.beam.runners.fnexecution.control.FnApiControlClient$ResponseStreamObserver.onNext(FnApiControlClient.java:157)
>       at 
> org.apache.beam.runners.fnexecution.control.FnApiControlClient$ResponseStreamObserver.onNext(FnApiControlClient.java:140)
>       at 
> org.apache.beam.vendor.grpc.v1p13p1.io.grpc.stub.ServerCalls$StreamingServerCallHandler$StreamingServerCallListener.onMessage(ServerCalls.java:248)
>       at 
> org.apache.beam.vendor.grpc.v1p13p1.io.grpc.ForwardingServerCallListener.onMessage(ForwardingServerCallListener.java:33)
>       at 
> org.apache.beam.vendor.grpc.v1p13p1.io.grpc.Contexts$ContextualizedServerCallListener.onMessage(Contexts.java:76)
>       at 
> org.apache.beam.vendor.grpc.v1p13p1.io.grpc.internal.ServerCallImpl$ServerStreamListenerImpl.messagesAvailable(ServerCallImpl.java:263)
>       at 
> org.apache.beam.vendor.grpc.v1p13p1.io.grpc.internal.ServerImpl$JumpToApplicationThreadServerStreamListener$1MessagesAvailable.runInContext(ServerImpl.java:683)
>       at 
> org.apache.beam.vendor.grpc.v1p13p1.io.grpc.internal.ContextRunnable.run(ContextRunnable.java:37)
>       at 
> org.apache.beam.vendor.grpc.v1p13p1.io.grpc.internal.SerializingExecutor.run(SerializingExecutor.java:123)
>       at 
> java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1142)
>       at 
> java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:617)
>       at java.lang.Thread.run(Thread.java:745)
> {code}



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