samples build failed due to firestore instance does not shutdown/close properly #474

[INFO] Running com.example.firestore.snippets.RetrieveDataSnippetsIT
Nov 23, 2020 5:40:14 PM io.grpc.internal.ManagedChannelOrphanWrapper$ManagedChannelReference cleanQueue
SEVERE: *~*~*~ Channel ManagedChannelImpl{logId=5, target=firestore.googleapis.com:443} was not shutdown properly!!! ~*~*~*
    Make sure to call shutdown()/shutdownNow() and wait until awaitTermination() returns true.
java.lang.RuntimeException: ManagedChannel allocation site
        at io.grpc.internal.ManagedChannelOrphanWrapper$ManagedChannelReference.<init>(ManagedChannelOrphanWrapper.java:93)
        at io.grpc.internal.ManagedChannelOrphanWrapper.<init>(ManagedChannelOrphanWrapper.java:53)
        at io.grpc.internal.ManagedChannelOrphanWrapper.<init>(ManagedChannelOrphanWrapper.java:44)
        at io.grpc.internal.ManagedChannelImplBuilder.build(ManagedChannelImplBuilder.java:596)
        at io.grpc.internal.AbstractManagedChannelImplBuilder.build(AbstractManagedChannelImplBuilder.java:261)
        at com.google.api.gax.grpc.InstantiatingGrpcChannelProvider.createSingleChannel(InstantiatingGrpcChannelProvider.java:314)
        at com.google.api.gax.grpc.InstantiatingGrpcChannelProvider.access$1600(InstantiatingGrpcChannelProvider.java:71)
        at com.google.api.gax.grpc.InstantiatingGrpcChannelProvider$1.createSingleChannel(InstantiatingGrpcChannelProvider.java:210)
        at com.google.api.gax.grpc.ChannelPool.create(ChannelPool.java:72)
        at com.google.api.gax.grpc.InstantiatingGrpcChannelProvider.createChannel(InstantiatingGrpcChannelProvider.java:217)
        at com.google.api.gax.grpc.InstantiatingGrpcChannelProvider.getTransportChannel(InstantiatingGrpcChannelProvider.java:200)
        at com.google.api.gax.rpc.ClientContext.create(ClientContext.java:169)
        at com.google.api.gax.rpc.ClientContext.create(ClientContext.java:132)
        at com.google.cloud.firestore.spi.v1.GrpcFirestoreRpc.<init>(GrpcFirestoreRpc.java:126)
        at com.google.cloud.firestore.FirestoreOptions$DefaultFirestoreRpcFactory.create(FirestoreOptions.java:89)
        at com.google.cloud.firestore.FirestoreOptions$DefaultFirestoreRpcFactory.create(FirestoreOptions.java:81)
        at com.google.cloud.ServiceOptions.getRpc(ServiceOptions.java:561)
        at com.google.cloud.firestore.FirestoreOptions.getFirestoreRpc(FirestoreOptions.java:365)
        at com.google.cloud.firestore.FirestoreImpl.<init>(FirestoreImpl.java:65)
        at com.google.cloud.firestore.FirestoreOptions$DefaultFirestoreFactory.create(FirestoreOptions.java:72)
        at com.google.cloud.firestore.FirestoreOptions$DefaultFirestoreFactory.create(FirestoreOptions.java:65)
        at com.google.cloud.ServiceOptions.getService(ServiceOptions.java:541)
        at com.example.firestore.Quickstart.<init>(Quickstart.java:64)
        at com.example.firestore.QuickstartIT.setUp(QuickstartIT.java:46)
        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.RunBefores.invokeMethod(RunBefores.java:33)
        at org.junit.internal.runners.statements.RunBefores.evaluate(RunBefores.java:24)
        at org.junit.internal.runners.statements.RunAfters.evaluate(RunAfters.java:27)
        at org.junit.runners.ParentRunner$3.evaluate(ParentRunner.java:306)
        at org.junit.runners.BlockJUnit4ClassRunner$1.evaluate(BlockJUnit4ClassRunner.java:100)
        at org.junit.runners.ParentRunner.runLeaf(ParentRunner.java:366)
        at org.junit.runners.BlockJUnit4ClassRunner.runChild(BlockJUnit4ClassRunner.java:103)
        at org.junit.runners.BlockJUnit4ClassRunner.runChild(BlockJUnit4ClassRunner.java:63)
        at org.junit.runners.ParentRunner$4.run(ParentRunner.java:331)
        at org.junit.runners.ParentRunner$1.schedule(ParentRunner.java:79)
        at org.junit.runners.ParentRunner.runChildren(ParentRunner.java:329)
        at org.junit.runners.ParentRunner.access$100(ParentRunner.java:66)
        at org.junit.runners.ParentRunner$2.evaluate(ParentRunner.java:293)
        at org.junit.internal.runners.statements.RunBefores.evaluate(RunBefores.java:26)
        at org.junit.runners.ParentRunner$3.evaluate(ParentRunner.java:306)
        at org.junit.runners.ParentRunner.run(ParentRunner.java:413)
        at org.apache.maven.surefire.junit4.JUnit4Provider.execute(JUnit4Provider.java:364)
        at org.apache.maven.surefire.junit4.JUnit4Provider.executeWithRerun(JUnit4Provider.java:272)
        at org.apache.maven.surefire.junit4.JUnit4Provider.executeTestSet(JUnit4Provider.java:237)
        at org.apache.maven.surefire.junit4.JUnit4Provider.invoke(JUnit4Provider.java:158)
        at org.apache.maven.surefire.booter.ForkedBooter.runSuitesInProcess(ForkedBooter.java:428)
        at org.apache.maven.surefire.booter.ForkedBooter.execute(ForkedBooter.java:162)
        at org.apache.maven.surefire.booter.ForkedBooter.run(ForkedBooter.java:562)
        at org.apache.maven.surefire.booter.ForkedBooter.main(ForkedBooter.java:548)

Nov 23, 2020 5:40:14 PM io.grpc.internal.ManagedChannelOrphanWrapper$ManagedChannelReference cleanQueue
SEVERE: *~*~*~ Channel ManagedChannelImpl{logId=1, target=firestore.googleapis.com:443} was not shutdown properly!!! ~*~*~*
    Make sure to call shutdown()/shutdownNow() and wait until awaitTermination() returns true.
java.lang.RuntimeException: ManagedChannel allocation site
        at io.grpc.internal.ManagedChannelOrphanWrapper$ManagedChannelReference.<init>(ManagedChannelOrphanWrapper.java:93)
        at io.grpc.internal.ManagedChannelOrphanWrapper.<init>(ManagedChannelOrphanWrapper.java:53)
        at io.grpc.internal.ManagedChannelOrphanWrapper.<init>(ManagedChannelOrphanWrapper.java:44)
        at io.grpc.internal.ManagedChannelImplBuilder.build(ManagedChannelImplBuilder.java:596)
        at io.grpc.internal.AbstractManagedChannelImplBuilder.build(AbstractManagedChannelImplBuilder.java:261)
        at com.google.api.gax.grpc.InstantiatingGrpcChannelProvider.createSingleChannel(InstantiatingGrpcChannelProvider.java:314)
        at com.google.api.gax.grpc.InstantiatingGrpcChannelProvider.access$1600(InstantiatingGrpcChannelProvider.java:71)
        at com.google.api.gax.grpc.InstantiatingGrpcChannelProvider$1.createSingleChannel(InstantiatingGrpcChannelProvider.java:210)
        at com.google.api.gax.grpc.ChannelPool.create(ChannelPool.java:72)
        at com.google.api.gax.grpc.InstantiatingGrpcChannelProvider.createChannel(InstantiatingGrpcChannelProvider.java:217)
        at com.google.api.gax.grpc.InstantiatingGrpcChannelProvider.getTransportChannel(InstantiatingGrpcChannelProvider.java:200)
        at com.google.api.gax.rpc.ClientContext.create(ClientContext.java:169)
        at com.google.api.gax.rpc.ClientContext.create(ClientContext.java:132)
        at com.google.cloud.firestore.spi.v1.GrpcFirestoreRpc.<init>(GrpcFirestoreRpc.java:126)
        at com.google.cloud.firestore.FirestoreOptions$DefaultFirestoreRpcFactory.create(FirestoreOptions.java:89)
        at com.google.cloud.firestore.FirestoreOptions$DefaultFirestoreRpcFactory.create(FirestoreOptions.java:81)
        at com.google.cloud.ServiceOptions.getRpc(ServiceOptions.java:561)
        at com.google.cloud.firestore.FirestoreOptions.getFirestoreRpc(FirestoreOptions.java:365)
        at com.google.cloud.firestore.FirestoreImpl.<init>(FirestoreImpl.java:65)
        at com.google.cloud.firestore.FirestoreOptions$DefaultFirestoreFactory.create(FirestoreOptions.java:72)
        at com.google.cloud.firestore.FirestoreOptions$DefaultFirestoreFactory.create(FirestoreOptions.java:65)
        at com.google.cloud.ServiceOptions.getService(ServiceOptions.java:541)
        at com.example.firestore.BaseIntegrationTest.baseSetup(BaseIntegrationTest.java:58)
        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.RunBefores.invokeMethod(RunBefores.java:33)
        at org.junit.internal.runners.statements.RunBefores.evaluate(RunBefores.java:24)
        at org.junit.runners.ParentRunner$3.evaluate(ParentRunner.java:306)
        at org.junit.runners.ParentRunner.run(ParentRunner.java:413)
        at org.apache.maven.surefire.junit4.JUnit4Provider.execute(JUnit4Provider.java:364)
        at org.apache.maven.surefire.junit4.JUnit4Provider.executeWithRerun(JUnit4Provider.java:272)
        at org.apache.maven.surefire.junit4.JUnit4Provider.executeTestSet(JUnit4Provider.java:237)
        at org.apache.maven.surefire.junit4.JUnit4Provider.invoke(JUnit4Provider.java:158)
        at org.apache.maven.surefire.booter.ForkedBooter.runSuitesInProcess(ForkedBooter.java:428)
        at org.apache.maven.surefire.booter.ForkedBooter.execute(ForkedBooter.java:162)
        at org.apache.maven.surefire.booter.ForkedBooter.run(ForkedBooter.java:562)
        at org.apache.maven.surefire.booter.ForkedBooter.main(ForkedBooter.java:548)