See 
<https://builds.apache.org/job/beam_PostCommit_Python_VR_Flink/160/display/redirect?page=changes>

Changes:

[shaun] added avroio package

[shaun] updated read emits to support both string and custom type reflects

[shaun] added avro write support

[shaun] updated to be in-line with beam project specifications

[shaun] update package log prints

[shaun] added readavro example

[shaun] updated example package header

[shaun] removed output.avro file

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INFO org.apache.flink.runtime.taskmanager.Task - Freeing task resources for 
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INFO org.apache.flink.runtime.taskmanager.Task - assert_that/Group/GroupByKey 
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INFO org.apache.flink.runtime.taskmanager.Task - assert_that/Group/GroupByKey 
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INFO org.apache.flink.runtime.taskmanager.Task - assert_that/Group/GroupByKey 
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(e56e9efd451c0689b26dd7b2b8c15188) switched from RUNNING to FINISHED.
[grpc-default-executor-1] INFO sdk_worker.run - No more requests from control 
plane
[grpc-default-executor-1] INFO sdk_worker.run - SDK Harness waiting for 
in-flight requests to complete
[grpc-default-executor-1] INFO data_plane.close - Closing all cached grpc data 
channels.
[grpc-default-executor-1] WARN 
org.apache.beam.sdk.fn.data.BeamFnDataGrpcMultiplexer - Hanged up for unknown 
endpoint.
[grpc-default-executor-1] INFO sdk_worker.close - Closing all cached gRPC state 
handlers.
[grpc-default-executor-1] INFO sdk_worker.run - Done consuming work.
[grpc-default-executor-1] INFO sdk_worker_main.main - Python sdk harness 
exiting.
[grpc-default-executor-1] INFO 
org.apache.beam.runners.fnexecution.logging.GrpcLoggingService - Logging client 
hanged up.
[assert_that/Group/GroupByKey -> 
42assert_that/Group/GroupByKey/GroupByWindow.None/beam:env:docker:v1:0 (2/16)] 
ERROR 
org.apache.beam.runners.flink.translation.functions.ReferenceCountingFlinkExecutableStageContextFactory
 - Unable to close FlinkExecutableStageContext.
java.lang.IllegalStateException: call already closed
        at 
org.apache.beam.vendor.guava.v20.com.google.common.base.Preconditions.checkState(Preconditions.java:444)
        at 
org.apache.beam.vendor.grpc.v1.io.grpc.internal.ServerCallImpl.close(ServerCallImpl.java:172)
        at 
org.apache.beam.vendor.grpc.v1.io.grpc.stub.ServerCalls$ServerCallStreamObserverImpl.onCompleted(ServerCalls.java:358)
        at 
org.apache.beam.runners.fnexecution.state.GrpcStateService.close(GrpcStateService.java:54)
        at 
org.apache.beam.runners.fnexecution.GrpcFnServer.close(GrpcFnServer.java:83)
        at 
org.apache.beam.runners.fnexecution.control.DefaultJobBundleFactory.close(DefaultJobBundleFactory.java:179)
        at 
org.apache.beam.runners.flink.translation.functions.FlinkDefaultExecutableStageContext.close(FlinkDefaultExecutableStageContext.java:62)
        at 
org.apache.beam.runners.flink.translation.functions.ReferenceCountingFlinkExecutableStageContextFactory$WrappedContext.closeActual(ReferenceCountingFlinkExecutableStageContextFactory.java:185)
        at 
org.apache.beam.runners.flink.translation.functions.ReferenceCountingFlinkExecutableStageContextFactory$WrappedContext.access$200(ReferenceCountingFlinkExecutableStageContextFactory.java:161)
        at 
org.apache.beam.runners.flink.translation.functions.ReferenceCountingFlinkExecutableStageContextFactory.release(ReferenceCountingFlinkExecutableStageContextFactory.java:149)
        at 
org.apache.beam.runners.flink.translation.functions.ReferenceCountingFlinkExecutableStageContextFactory.scheduleRelease(ReferenceCountingFlinkExecutableStageContextFactory.java:109)
        at 
org.apache.beam.runners.flink.translation.functions.ReferenceCountingFlinkExecutableStageContextFactory.access$300(ReferenceCountingFlinkExecutableStageContextFactory.java:40)
        at 
org.apache.beam.runners.flink.translation.functions.ReferenceCountingFlinkExecutableStageContextFactory$WrappedContext.close(ReferenceCountingFlinkExecutableStageContextFactory.java:181)
        at 
org.apache.beam.runners.flink.translation.wrappers.streaming.ExecutableStageDoFnOperator.$closeResource(ExecutableStageDoFnOperator.java:187)
        at 
org.apache.beam.runners.flink.translation.wrappers.streaming.ExecutableStageDoFnOperator.close(ExecutableStageDoFnOperator.java:202)
        at 
org.apache.flink.streaming.runtime.tasks.StreamTask.closeAllOperators(StreamTask.java:438)
        at 
org.apache.flink.streaming.runtime.tasks.StreamTask.invoke(StreamTask.java:323)
        at org.apache.flink.runtime.taskmanager.Task.run(Task.java:712)
        at java.lang.Thread.run(Thread.java:748)
[assert_that/Group/GroupByKey -> 
42assert_that/Group/GroupByKey/GroupByWindow.None/beam:env:docker:v1:0 (2/16)] 
INFO org.apache.flink.runtime.taskmanager.Task - assert_that/Group/GroupByKey 
-> 42assert_that/Group/GroupByKey/GroupByWindow.None/beam:env:docker:v1:0 
(2/16) (e4db0849bcc3ea9d2f60af5f90d0d4a2) switched from RUNNING to FINISHED.
[assert_that/Group/GroupByKey -> 
42assert_that/Group/GroupByKey/GroupByWindow.None/beam:env:docker:v1:0 (2/16)] 
INFO org.apache.flink.runtime.taskmanager.Task - Freeing task resources for 
assert_that/Group/GroupByKey -> 
42assert_that/Group/GroupByKey/GroupByWindow.None/beam:env:docker:v1:0 (2/16) 
(e4db0849bcc3ea9d2f60af5f90d0d4a2).
[assert_that/Group/GroupByKey -> 
42assert_that/Group/GroupByKey/GroupByWindow.None/beam:env:docker:v1:0 (2/16)] 
INFO org.apache.flink.runtime.taskmanager.Task - Ensuring all FileSystem 
streams are closed for task assert_that/Group/GroupByKey -> 
42assert_that/Group/GroupByKey/GroupByWindow.None/beam:env:docker:v1:0 (2/16) 
(e4db0849bcc3ea9d2f60af5f90d0d4a2) [FINISHED]
[flink-akka.actor.default-dispatcher-5] INFO 
org.apache.flink.runtime.taskexecutor.TaskExecutor - Un-registering task and 
sending final execution state FINISHED to JobManager for task 
assert_that/Group/GroupByKey -> 
42assert_that/Group/GroupByKey/GroupByWindow.None/beam:env:docker:v1:0 
e4db0849bcc3ea9d2f60af5f90d0d4a2.
[flink-akka.actor.default-dispatcher-5] INFO 
org.apache.flink.runtime.executiongraph.ExecutionGraph - 
assert_that/Group/GroupByKey -> 
42assert_that/Group/GroupByKey/GroupByWindow.None/beam:env:docker:v1:0 (2/16) 
(e4db0849bcc3ea9d2f60af5f90d0d4a2) switched from RUNNING to FINISHED.
[flink-akka.actor.default-dispatcher-5] INFO 
org.apache.flink.runtime.executiongraph.ExecutionGraph - Job 
test_windowing_1538070289.6 (c63eaf26b1425ba24b17d6fcce55527a) switched from 
state RUNNING to FINISHED.
[flink-akka.actor.default-dispatcher-5] INFO 
org.apache.flink.runtime.checkpoint.CheckpointCoordinator - Stopping checkpoint 
coordinator for job c63eaf26b1425ba24b17d6fcce55527a.
[flink-akka.actor.default-dispatcher-5] INFO 
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Shutting down
[flink-akka.actor.default-dispatcher-2] INFO 
org.apache.flink.runtime.dispatcher.StandaloneDispatcher - Job 
c63eaf26b1425ba24b17d6fcce55527a reached globally terminal state FINISHED.
[flink-akka.actor.default-dispatcher-5] INFO 
org.apache.flink.runtime.jobmaster.JobMaster - Stopping the JobMaster for job 
test_windowing_1538070289.6(c63eaf26b1425ba24b17d6fcce55527a).
[flink-akka.actor.default-dispatcher-3] INFO 
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[flink-akka.actor.default-dispatcher-5] INFO 
org.apache.flink.runtime.jobmaster.JobMaster - Close ResourceManager connection 
cd6905f530d313b36fceb87c36e74f1f: JobManager is shutting down..
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org.apache.flink.runtime.jobmaster.slotpool.SlotPool - Suspending SlotPool.
[flink-akka.actor.default-dispatcher-4] INFO 
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job manager 922b828bae69b5109211416e115d421c@akka://flink/user/jobmanager_39 
for job c63eaf26b1425ba24b17d6fcce55527a from the resource manager.
[flink-akka.actor.default-dispatcher-2] INFO 
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endpoint.
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org.apache.flink.runtime.dispatcher.StandaloneDispatcher - Stopping dispatcher 
akka://flink/user/dispatcher45671cb7-0e54-41df-8127-abe46397c719.
[flink-akka.actor.default-dispatcher-5] INFO 
org.apache.flink.runtime.dispatcher.StandaloneDispatcher - Stopping all 
currently running jobs of dispatcher 
akka://flink/user/dispatcher45671cb7-0e54-41df-8127-abe46397c719.
[flink-akka.actor.default-dispatcher-4] INFO 
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the SlotManager.
[flink-akka.actor.default-dispatcher-4] INFO 
org.apache.flink.runtime.resourcemanager.slotmanager.SlotManager - Unregister 
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[flink-akka.actor.default-dispatcher-2] INFO 
org.apache.flink.runtime.taskexecutor.TaskExecutor - JobManager for job 
c63eaf26b1425ba24b17d6fcce55527a with leader id 
922b828bae69b5109211416e115d421c lost leadership.
[flink-akka.actor.default-dispatcher-3] INFO 
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nativeMemoryInMB=0, networkMemoryInMB=0}, allocationId: 
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nativeMemoryInMB=0, networkMemoryInMB=0}, allocationId: 
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c63eaf26b1425ba24b17d6fcce55527a).
[flink-akka.actor.default-dispatcher-3] INFO 
org.apache.flink.runtime.taskexecutor.slot.TaskSlotTable - Free slot 
TaskSlot(index:6, state:ALLOCATED, resource profile: 
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nativeMemoryInMB=0, networkMemoryInMB=0}, allocationId: 
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c63eaf26b1425ba24b17d6fcce55527a).
[flink-akka.actor.default-dispatcher-5] INFO 
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[flink-akka.actor.default-dispatcher-3] INFO 
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nativeMemoryInMB=0, networkMemoryInMB=0}, allocationId: 
AllocationID{4629a5a79bc9f73d3467a3bad6bc857f}, jobId: 
c63eaf26b1425ba24b17d6fcce55527a).
[flink-akka.actor.default-dispatcher-5] INFO 
org.apache.flink.runtime.dispatcher.StandaloneDispatcher - Stopped dispatcher 
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[flink-akka.actor.default-dispatcher-3] INFO 
org.apache.flink.runtime.taskexecutor.slot.TaskSlotTable - Free slot 
TaskSlot(index:12, state:ALLOCATED, resource profile: 
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nativeMemoryInMB=0, networkMemoryInMB=0}, allocationId: 
AllocationID{6ff95217598bf8a1249a690c6f3cc775}, jobId: 
c63eaf26b1425ba24b17d6fcce55527a).
[flink-akka.actor.default-dispatcher-3] INFO 
org.apache.flink.runtime.taskexecutor.slot.TaskSlotTable - Free slot 
TaskSlot(index:10, state:ALLOCATED, resource profile: 
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nativeMemoryInMB=0, networkMemoryInMB=0}, allocationId: 
AllocationID{376e1affad77b43adebf04708e5c07ed}, jobId: 
c63eaf26b1425ba24b17d6fcce55527a).
[flink-akka.actor.default-dispatcher-3] INFO 
org.apache.flink.runtime.taskexecutor.slot.TaskSlotTable - Free slot 
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c63eaf26b1425ba24b17d6fcce55527a).
[flink-akka.actor.default-dispatcher-3] INFO 
org.apache.flink.runtime.taskexecutor.slot.TaskSlotTable - Free slot 
TaskSlot(index:7, state:ALLOCATED, resource profile: 
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nativeMemoryInMB=0, networkMemoryInMB=0}, allocationId: 
AllocationID{94036f3475fd9e7712429b712c6e47a2}, jobId: 
c63eaf26b1425ba24b17d6fcce55527a).
[flink-akka.actor.default-dispatcher-3] INFO 
org.apache.flink.runtime.taskexecutor.slot.TaskSlotTable - Free slot 
TaskSlot(index:4, state:ALLOCATED, resource profile: 
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nativeMemoryInMB=0, networkMemoryInMB=0}, allocationId: 
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c63eaf26b1425ba24b17d6fcce55527a).
[flink-akka.actor.default-dispatcher-3] INFO 
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TaskSlot(index:15, state:ALLOCATED, resource profile: 
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nativeMemoryInMB=0, networkMemoryInMB=0}, allocationId: 
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[flink-akka.actor.default-dispatcher-3] INFO 
org.apache.flink.runtime.taskexecutor.slot.TaskSlotTable - Free slot 
TaskSlot(index:14, state:ALLOCATED, resource profile: 
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nativeMemoryInMB=0, networkMemoryInMB=0}, allocationId: 
AllocationID{3b3824b7694ed8752f8d4ff5681b664c}, jobId: 
c63eaf26b1425ba24b17d6fcce55527a).
[flink-akka.actor.default-dispatcher-3] INFO 
org.apache.flink.runtime.taskexecutor.slot.TaskSlotTable - Free slot 
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nativeMemoryInMB=0, networkMemoryInMB=0}, allocationId: 
AllocationID{1b373b508f568f0463887ac4bdab060e}, jobId: 
c63eaf26b1425ba24b17d6fcce55527a).
[flink-akka.actor.default-dispatcher-3] INFO 
org.apache.flink.runtime.taskexecutor.slot.TaskSlotTable - Free slot 
TaskSlot(index:2, state:ALLOCATED, resource profile: 
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nativeMemoryInMB=0, networkMemoryInMB=0}, allocationId: 
AllocationID{9ee0778b4cea6ccf6be6a0bc7a67b8bf}, jobId: 
c63eaf26b1425ba24b17d6fcce55527a).
[flink-akka.actor.default-dispatcher-3] INFO 
org.apache.flink.runtime.taskexecutor.slot.TaskSlotTable - Free slot 
TaskSlot(index:9, state:ALLOCATED, resource profile: 
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nativeMemoryInMB=0, networkMemoryInMB=0}, allocationId: 
AllocationID{8c0c74cf7e6d96831f39488ce26fd6ba}, jobId: 
c63eaf26b1425ba24b17d6fcce55527a).
[flink-akka.actor.default-dispatcher-3] INFO 
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nativeMemoryInMB=0, networkMemoryInMB=0}, allocationId: 
AllocationID{8409246c25297b8e418e2bf12a22640e}, jobId: 
c63eaf26b1425ba24b17d6fcce55527a).
[flink-akka.actor.default-dispatcher-3] INFO 
org.apache.flink.runtime.taskexecutor.slot.TaskSlotTable - Free slot 
TaskSlot(index:13, state:ALLOCATED, resource profile: 
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nativeMemoryInMB=0, networkMemoryInMB=0}, allocationId: 
AllocationID{0486ab33684eefe09c023c9e9d7b6b0e}, jobId: 
c63eaf26b1425ba24b17d6fcce55527a).
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c63eaf26b1425ba24b17d6fcce55527a from job leader monitoring.
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org.apache.flink.runtime.taskexecutor.TaskExecutor - Close JobManager 
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[flink-akka.actor.default-dispatcher-3] INFO 
org.apache.flink.runtime.taskexecutor.TaskExecutor - Stopping TaskExecutor 
akka://flink/user/taskmanager_38.
[flink-akka.actor.default-dispatcher-3] INFO 
org.apache.flink.runtime.state.TaskExecutorLocalStateStoresManager - Shutting 
down TaskExecutorLocalStateStoresManager.
[flink-akka.actor.default-dispatcher-3] INFO 
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spill file directory /tmp/flink-io-0baee4bc-9ddf-4d22-833b-f7c607195384
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org.apache.flink.runtime.taskexecutor.TaskExecutor - Stopped TaskExecutor 
akka://flink/user/taskmanager_38.
[flink-akka.actor.default-dispatcher-3] INFO 
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[flink-runner-job-server] INFO org.apache.beam.runners.flink.FlinkRunner - 
Execution finished in 1837 msecs
[flink-runner-job-server] INFO org.apache.beam.runners.flink.FlinkRunner - 
Final accumulator values:
[flink-runner-job-server] INFO org.apache.beam.runners.flink.FlinkRunner - 
__metricscontainers : 
org.apache.beam.runners.core.metrics.MetricsContainerStepMap@e140c12c
.
----------------------------------------------------------------------
Ran 24 tests in 72.562s

OK (skipped=6)
Segmentation fault (core dumped)

> Task :beam-sdks-python:flinkCompatibilityMatrixStreaming FAILED
:beam-sdks-python:flinkCompatibilityMatrixStreaming (Thread[Task worker for ':' 
Thread 10,5,main]) completed. Took 1 mins 14.691 secs.

FAILURE: Build failed with an exception.

* Where:
Build file 
'<https://builds.apache.org/job/beam_PostCommit_Python_VR_Flink/ws/src/sdks/python/build.gradle'>
 line: 340

* What went wrong:
Execution failed for task ':beam-sdks-python:flinkCompatibilityMatrixStreaming'.
> Process 'command 'sh'' finished with non-zero exit value 139

* Try:
Run with --stacktrace option to get the stack trace. Run with --debug option to 
get more log output. Run with --scan to get full insights.

* Get more help at https://help.gradle.org

Deprecated Gradle features were used in this build, making it incompatible with 
Gradle 5.0.
Use '--warning-mode all' to show the individual deprecation warnings.
See 
https://docs.gradle.org/4.10.2/userguide/command_line_interface.html#sec:command_line_warnings

BUILD FAILED in 10m 45s
59 actionable tasks: 54 executed, 4 from cache, 1 up-to-date

Publishing build scan...
https://gradle.com/s/bu43dpqd4bd26

Build step 'Invoke Gradle script' changed build result to FAILURE
Build step 'Invoke Gradle script' marked build as failure

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