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[1]write/Write/WriteImpl/Extract -> (Map -> ToKeyedWorkItem, Map -> 
ToKeyedWorkItem) (1/2) (98307d4ae16d839a13ad74899cd89830) [FINISHED]
[flink-akka.actor.default-dispatcher-3] INFO 
org.apache.flink.runtime.taskexecutor.TaskExecutor - Un-registering task and 
sending final execution state FINISHED to JobManager for task 
write/Write/WriteImpl/GroupByKey -> [1]write/Write/WriteImpl/Extract -> (Map -> 
ToKeyedWorkItem, Map -> ToKeyedWorkItem) 98307d4ae16d839a13ad74899cd89830.
[ref_AppliedPTransform_write/Write/WriteImpl/FinalizeWrite_33-side1 -> Map 
(1/2)] INFO org.apache.flink.runtime.taskmanager.Task - 
ref_AppliedPTransform_write/Write/WriteImpl/FinalizeWrite_33-side1 -> Map (1/2) 
(7b30137c62fd9f3b7e9f7bb82404c8a2) switched from RUNNING to FINISHED.
[ref_AppliedPTransform_write/Write/WriteImpl/PreFinalize_32-side1 -> Map (2/2)] 
INFO org.apache.flink.runtime.taskmanager.Task - 
ref_AppliedPTransform_write/Write/WriteImpl/PreFinalize_32-side1 -> Map (2/2) 
(a8ace0c864ded726da50dfbbe8ae257a) switched from RUNNING to FINISHED.
[ref_AppliedPTransform_write/Write/WriteImpl/PreFinalize_32-side1 -> Map (2/2)] 
INFO org.apache.flink.runtime.taskmanager.Task - Freeing task resources for 
ref_AppliedPTransform_write/Write/WriteImpl/PreFinalize_32-side1 -> Map (2/2) 
(a8ace0c864ded726da50dfbbe8ae257a).
[ref_AppliedPTransform_write/Write/WriteImpl/PreFinalize_32-side1 -> Map (1/2)] 
INFO org.apache.flink.runtime.taskmanager.Task - 
ref_AppliedPTransform_write/Write/WriteImpl/PreFinalize_32-side1 -> Map (1/2) 
(b9f4ad1961cd4f7b0170e9cd6b7b7859) switched from RUNNING to FINISHED.
[ref_AppliedPTransform_write/Write/WriteImpl/PreFinalize_32-side1 -> Map (1/2)] 
INFO org.apache.flink.runtime.taskmanager.Task - Freeing task resources for 
ref_AppliedPTransform_write/Write/WriteImpl/PreFinalize_32-side1 -> Map (1/2) 
(b9f4ad1961cd4f7b0170e9cd6b7b7859).
[ref_AppliedPTransform_write/Write/WriteImpl/FinalizeWrite_33-side1 -> Map 
(1/2)] INFO org.apache.flink.runtime.taskmanager.Task - Freeing task resources 
for ref_AppliedPTransform_write/Write/WriteImpl/FinalizeWrite_33-side1 -> Map 
(1/2) (7b30137c62fd9f3b7e9f7bb82404c8a2).
[ref_AppliedPTransform_write/Write/WriteImpl/FinalizeWrite_33-side1 -> Map 
(2/2)] INFO org.apache.flink.runtime.taskmanager.Task - 
ref_AppliedPTransform_write/Write/WriteImpl/FinalizeWrite_33-side1 -> Map (2/2) 
(d1842d60ca3c340e88b6abe50e422f28) switched from RUNNING to FINISHED.
[ref_AppliedPTransform_write/Write/WriteImpl/FinalizeWrite_33-side1 -> Map 
(2/2)] INFO org.apache.flink.runtime.taskmanager.Task - Freeing task resources 
for ref_AppliedPTransform_write/Write/WriteImpl/FinalizeWrite_33-side1 -> Map 
(2/2) (d1842d60ca3c340e88b6abe50e422f28).
[ref_AppliedPTransform_write/Write/WriteImpl/PreFinalize_32-side1 -> Map (2/2)] 
INFO org.apache.flink.runtime.taskmanager.Task - Ensuring all FileSystem 
streams are closed for task 
ref_AppliedPTransform_write/Write/WriteImpl/PreFinalize_32-side1 -> Map (2/2) 
(a8ace0c864ded726da50dfbbe8ae257a) [FINISHED]
[ref_AppliedPTransform_write/Write/WriteImpl/PreFinalize_32-side1 -> Map (1/2)] 
INFO org.apache.flink.runtime.taskmanager.Task - Ensuring all FileSystem 
streams are closed for task 
ref_AppliedPTransform_write/Write/WriteImpl/PreFinalize_32-side1 -> Map (1/2) 
(b9f4ad1961cd4f7b0170e9cd6b7b7859) [FINISHED]
[ref_AppliedPTransform_write/Write/WriteImpl/FinalizeWrite_33-side1 -> Map 
(2/2)] INFO org.apache.flink.runtime.taskmanager.Task - Ensuring all FileSystem 
streams are closed for task 
ref_AppliedPTransform_write/Write/WriteImpl/FinalizeWrite_33-side1 -> Map (2/2) 
(d1842d60ca3c340e88b6abe50e422f28) [FINISHED]
[ref_AppliedPTransform_write/Write/WriteImpl/FinalizeWrite_33-side1 -> Map 
(1/2)] INFO org.apache.flink.runtime.taskmanager.Task - Ensuring all FileSystem 
streams are closed for task 
ref_AppliedPTransform_write/Write/WriteImpl/FinalizeWrite_33-side1 -> Map (1/2) 
(7b30137c62fd9f3b7e9f7bb82404c8a2) [FINISHED]
[flink-akka.actor.default-dispatcher-3] INFO 
org.apache.flink.runtime.taskexecutor.TaskExecutor - Un-registering task and 
sending final execution state FINISHED to JobManager for task 
ref_AppliedPTransform_write/Write/WriteImpl/PreFinalize_32-side1 -> Map 
a8ace0c864ded726da50dfbbe8ae257a.
[flink-akka.actor.default-dispatcher-3] INFO 
org.apache.flink.runtime.taskexecutor.TaskExecutor - Un-registering task and 
sending final execution state FINISHED to JobManager for task 
ref_AppliedPTransform_write/Write/WriteImpl/FinalizeWrite_33-side1 -> Map 
d1842d60ca3c340e88b6abe50e422f28.
[flink-akka.actor.default-dispatcher-4] INFO 
org.apache.flink.runtime.executiongraph.ExecutionGraph - 
write/Write/WriteImpl/GroupByKey -> [1]write/Write/WriteImpl/Extract -> (Map -> 
ToKeyedWorkItem, Map -> ToKeyedWorkItem) (1/2) 
(98307d4ae16d839a13ad74899cd89830) switched from RUNNING to FINISHED.
[flink-akka.actor.default-dispatcher-3] INFO 
org.apache.flink.runtime.taskexecutor.TaskExecutor - Un-registering task and 
sending final execution state FINISHED to JobManager for task 
ref_AppliedPTransform_write/Write/WriteImpl/FinalizeWrite_33-side1 -> Map 
7b30137c62fd9f3b7e9f7bb82404c8a2.
[flink-akka.actor.default-dispatcher-4] INFO 
org.apache.flink.runtime.executiongraph.ExecutionGraph - 
ref_AppliedPTransform_write/Write/WriteImpl/PreFinalize_32-side1 -> Map (2/2) 
(a8ace0c864ded726da50dfbbe8ae257a) switched from RUNNING to FINISHED.
[flink-akka.actor.default-dispatcher-3] INFO 
org.apache.flink.runtime.taskexecutor.TaskExecutor - Un-registering task and 
sending final execution state FINISHED to JobManager for task 
ref_AppliedPTransform_write/Write/WriteImpl/PreFinalize_32-side1 -> Map 
b9f4ad1961cd4f7b0170e9cd6b7b7859.
[flink-akka.actor.default-dispatcher-4] INFO 
org.apache.flink.runtime.executiongraph.ExecutionGraph - 
ref_AppliedPTransform_write/Write/WriteImpl/FinalizeWrite_33-side1 -> Map (2/2) 
(d1842d60ca3c340e88b6abe50e422f28) switched from RUNNING to FINISHED.
[flink-akka.actor.default-dispatcher-4] INFO 
org.apache.flink.runtime.executiongraph.ExecutionGraph - 
ref_AppliedPTransform_write/Write/WriteImpl/FinalizeWrite_33-side1 -> Map (1/2) 
(7b30137c62fd9f3b7e9f7bb82404c8a2) switched from RUNNING to FINISHED.
[flink-akka.actor.default-dispatcher-4] INFO 
org.apache.flink.runtime.executiongraph.ExecutionGraph - 
ref_AppliedPTransform_write/Write/WriteImpl/PreFinalize_32-side1 -> Map (1/2) 
(b9f4ad1961cd4f7b0170e9cd6b7b7859) switched from RUNNING to FINISHED.
[[1]write/Write/WriteImpl/PreFinalize -> Map -> ToKeyedWorkItem (2/2)] INFO 
org.apache.flink.runtime.taskmanager.Task - 
[1]write/Write/WriteImpl/PreFinalize -> Map -> ToKeyedWorkItem (2/2) 
(970eccb796733610b384c83cd07a397b) switched from RUNNING to FINISHED.
[[1]write/Write/WriteImpl/PreFinalize -> Map -> ToKeyedWorkItem (2/2)] INFO 
org.apache.flink.runtime.taskmanager.Task - Freeing task resources for 
[1]write/Write/WriteImpl/PreFinalize -> Map -> ToKeyedWorkItem (2/2) 
(970eccb796733610b384c83cd07a397b).
[[1]write/Write/WriteImpl/PreFinalize -> Map -> ToKeyedWorkItem (2/2)] INFO 
org.apache.flink.runtime.taskmanager.Task - Ensuring all FileSystem streams are 
closed for task [1]write/Write/WriteImpl/PreFinalize -> Map -> ToKeyedWorkItem 
(2/2) (970eccb796733610b384c83cd07a397b) [FINISHED]
[flink-akka.actor.default-dispatcher-4] INFO 
org.apache.flink.runtime.taskexecutor.TaskExecutor - Un-registering task and 
sending final execution state FINISHED to JobManager for task 
[1]write/Write/WriteImpl/PreFinalize -> Map -> ToKeyedWorkItem 
970eccb796733610b384c83cd07a397b.
[flink-akka.actor.default-dispatcher-4] INFO 
org.apache.flink.runtime.executiongraph.ExecutionGraph - 
[1]write/Write/WriteImpl/PreFinalize -> Map -> ToKeyedWorkItem (2/2) 
(970eccb796733610b384c83cd07a397b) switched from RUNNING to FINISHED.
[[1]write/Write/WriteImpl/PreFinalize -> Map -> ToKeyedWorkItem (1/2)] INFO 
org.apache.flink.runtime.taskmanager.Task - 
[1]write/Write/WriteImpl/PreFinalize -> Map -> ToKeyedWorkItem (1/2) 
(4a4b4e4f2f2c0e36a4f0ad4c82d0c6bc) switched from RUNNING to FINISHED.
[[1]write/Write/WriteImpl/PreFinalize -> Map -> ToKeyedWorkItem (1/2)] INFO 
org.apache.flink.runtime.taskmanager.Task - Freeing task resources for 
[1]write/Write/WriteImpl/PreFinalize -> Map -> ToKeyedWorkItem (1/2) 
(4a4b4e4f2f2c0e36a4f0ad4c82d0c6bc).
[[1]write/Write/WriteImpl/PreFinalize -> Map -> ToKeyedWorkItem (1/2)] INFO 
org.apache.flink.runtime.taskmanager.Task - Ensuring all FileSystem streams are 
closed for task [1]write/Write/WriteImpl/PreFinalize -> Map -> ToKeyedWorkItem 
(1/2) (4a4b4e4f2f2c0e36a4f0ad4c82d0c6bc) [FINISHED]
[flink-akka.actor.default-dispatcher-4] INFO 
org.apache.flink.runtime.taskexecutor.TaskExecutor - Un-registering task and 
sending final execution state FINISHED to JobManager for task 
[1]write/Write/WriteImpl/PreFinalize -> Map -> ToKeyedWorkItem 
4a4b4e4f2f2c0e36a4f0ad4c82d0c6bc.
[ref_AppliedPTransform_write/Write/WriteImpl/FinalizeWrite_33-side2 -> Map 
(2/2)] INFO org.apache.flink.runtime.taskmanager.Task - 
ref_AppliedPTransform_write/Write/WriteImpl/FinalizeWrite_33-side2 -> Map (2/2) 
(3395aa8fc150713ad2e02a15e5337b83) switched from RUNNING to FINISHED.
[ref_AppliedPTransform_write/Write/WriteImpl/FinalizeWrite_33-side2 -> Map 
(2/2)] INFO org.apache.flink.runtime.taskmanager.Task - Freeing task resources 
for ref_AppliedPTransform_write/Write/WriteImpl/FinalizeWrite_33-side2 -> Map 
(2/2) (3395aa8fc150713ad2e02a15e5337b83).
[ref_AppliedPTransform_write/Write/WriteImpl/FinalizeWrite_33-side2 -> Map 
(2/2)] INFO org.apache.flink.runtime.taskmanager.Task - Ensuring all FileSystem 
streams are closed for task 
ref_AppliedPTransform_write/Write/WriteImpl/FinalizeWrite_33-side2 -> Map (2/2) 
(3395aa8fc150713ad2e02a15e5337b83) [FINISHED]
[flink-akka.actor.default-dispatcher-4] INFO 
org.apache.flink.runtime.taskexecutor.TaskExecutor - Un-registering task and 
sending final execution state FINISHED to JobManager for task 
ref_AppliedPTransform_write/Write/WriteImpl/FinalizeWrite_33-side2 -> Map 
3395aa8fc150713ad2e02a15e5337b83.
[ref_AppliedPTransform_write/Write/WriteImpl/FinalizeWrite_33-side2 -> Map 
(1/2)] INFO org.apache.flink.runtime.taskmanager.Task - 
ref_AppliedPTransform_write/Write/WriteImpl/FinalizeWrite_33-side2 -> Map (1/2) 
(fe810c969dd09b43dc32bb609f60b3ae) switched from RUNNING to FINISHED.
[ref_AppliedPTransform_write/Write/WriteImpl/FinalizeWrite_33-side2 -> Map 
(1/2)] INFO org.apache.flink.runtime.taskmanager.Task - Freeing task resources 
for ref_AppliedPTransform_write/Write/WriteImpl/FinalizeWrite_33-side2 -> Map 
(1/2) (fe810c969dd09b43dc32bb609f60b3ae).
[ref_AppliedPTransform_write/Write/WriteImpl/FinalizeWrite_33-side2 -> Map 
(1/2)] INFO org.apache.flink.runtime.taskmanager.Task - Ensuring all FileSystem 
streams are closed for task 
ref_AppliedPTransform_write/Write/WriteImpl/FinalizeWrite_33-side2 -> Map (1/2) 
(fe810c969dd09b43dc32bb609f60b3ae) [FINISHED]
[flink-akka.actor.default-dispatcher-4] INFO 
org.apache.flink.runtime.taskexecutor.TaskExecutor - Un-registering task and 
sending final execution state FINISHED to JobManager for task 
ref_AppliedPTransform_write/Write/WriteImpl/FinalizeWrite_33-side2 -> Map 
fe810c969dd09b43dc32bb609f60b3ae.
[flink-akka.actor.default-dispatcher-3] INFO 
org.apache.flink.runtime.executiongraph.ExecutionGraph - 
[1]write/Write/WriteImpl/PreFinalize -> Map -> ToKeyedWorkItem (1/2) 
(4a4b4e4f2f2c0e36a4f0ad4c82d0c6bc) switched from RUNNING to FINISHED.
[flink-akka.actor.default-dispatcher-3] INFO 
org.apache.flink.runtime.executiongraph.ExecutionGraph - 
ref_AppliedPTransform_write/Write/WriteImpl/FinalizeWrite_33-side2 -> Map (2/2) 
(3395aa8fc150713ad2e02a15e5337b83) switched from RUNNING to FINISHED.
[flink-akka.actor.default-dispatcher-3] INFO 
org.apache.flink.runtime.executiongraph.ExecutionGraph - 
ref_AppliedPTransform_write/Write/WriteImpl/FinalizeWrite_33-side2 -> Map (1/2) 
(fe810c969dd09b43dc32bb609f60b3ae) switched from RUNNING to FINISHED.
[[1]write/Write/WriteImpl/FinalizeWrite (2/2)] INFO 
org.apache.flink.runtime.taskmanager.Task - 
[1]write/Write/WriteImpl/FinalizeWrite (2/2) (c81fc6e7c52e92e7a13b2885644b5a12) 
switched from RUNNING to FINISHED.
[[1]write/Write/WriteImpl/FinalizeWrite (2/2)] INFO 
org.apache.flink.runtime.taskmanager.Task - Freeing task resources for 
[1]write/Write/WriteImpl/FinalizeWrite (2/2) (c81fc6e7c52e92e7a13b2885644b5a12).
[[1]write/Write/WriteImpl/FinalizeWrite (2/2)] INFO 
org.apache.flink.runtime.taskmanager.Task - Ensuring all FileSystem streams are 
closed for task [1]write/Write/WriteImpl/FinalizeWrite (2/2) 
(c81fc6e7c52e92e7a13b2885644b5a12) [FINISHED]
[flink-akka.actor.default-dispatcher-3] INFO 
org.apache.flink.runtime.taskexecutor.TaskExecutor - Un-registering task and 
sending final execution state FINISHED to JobManager for task 
[1]write/Write/WriteImpl/FinalizeWrite c81fc6e7c52e92e7a13b2885644b5a12.
[flink-akka.actor.default-dispatcher-5] INFO 
org.apache.flink.runtime.executiongraph.ExecutionGraph - 
[1]write/Write/WriteImpl/FinalizeWrite (2/2) (c81fc6e7c52e92e7a13b2885644b5a12) 
switched from RUNNING to FINISHED.
[grpc-default-executor-0] INFO 
/usr/local/lib/python3.7/site-packages/apache_beam/io/filebasedsink.py:310 - 
Starting finalize_write threads with num_shards: 2 (skipped: 0), batches: 2, 
num_threads: 2
[grpc-default-executor-0] INFO 
/usr/local/lib/python3.7/site-packages/apache_beam/io/filebasedsink.py:355 - 
Renamed 2 shards in 0.11 seconds.
[[1]write/Write/WriteImpl/FinalizeWrite (1/2)] INFO 
org.apache.beam.runners.fnexecution.control.DefaultJobBundleFactory - Closing 
environment urn: "beam:env:docker:v1"
payload: "\n#apachebeam/python3.7_sdk:2.20.0.dev"

[[1]write/Write/WriteImpl/FinalizeWrite (1/2)] INFO 
org.apache.beam.runners.fnexecution.logging.GrpcLoggingService - 1 Beam Fn 
Logging clients still connected during shutdown.
[[1]write/Write/WriteImpl/FinalizeWrite (1/2)] WARN 
org.apache.beam.sdk.fn.data.BeamFnDataGrpcMultiplexer - Hanged up for unknown 
endpoint.
[[1]write/Write/WriteImpl/FinalizeWrite (1/2)] INFO 
org.apache.beam.runners.fnexecution.environment.DockerContainerEnvironment - 
Closing Docker container 
8ed13552a0119bc33702e63c25b5a8646f9e861c1f706ec33d3147c294035323. Logs:
2020/02/09 06:52:07 Initializing python harness: /opt/apache/beam/boot --id=1-1 
--logging_endpoint=localhost:44765 --artifact_endpoint=localhost:33095 
--provision_endpoint=localhost:39003 --control_endpoint=localhost:39695
2020/02/09 06:52:07 Installing setup packages ...
2020/02/09 06:52:07 Found artifact: pickled_main_session
2020/02/09 06:52:07 Executing: python -m 
apache_beam.runners.worker.sdk_worker_main
[[1]write/Write/WriteImpl/FinalizeWrite (1/2)] WARN 
org.apache.beam.runners.fnexecution.control.DefaultJobBundleFactory - Error 
cleaning up servers urn: "beam:env:docker:v1"
payload: "\n#apachebeam/python3.7_sdk:2.20.0.dev"

java.io.IOException: Received exit code 1 for command 'docker rm 
8ed13552a0119bc33702e63c25b5a8646f9e861c1f706ec33d3147c294035323'. stderr: 
Error: No such container: 
8ed13552a0119bc33702e63c25b5a8646f9e861c1f706ec33d3147c294035323
        at 
org.apache.beam.runners.fnexecution.environment.DockerCommand.runShortCommand(DockerCommand.java:234)
        at 
org.apache.beam.runners.fnexecution.environment.DockerCommand.runShortCommand(DockerCommand.java:168)
        at 
org.apache.beam.runners.fnexecution.environment.DockerCommand.removeContainer(DockerCommand.java:163)
        at 
org.apache.beam.runners.fnexecution.environment.DockerContainerEnvironment.close(DockerContainerEnvironment.java:95)
        at 
org.apache.beam.runners.fnexecution.control.DefaultJobBundleFactory$WrappedSdkHarnessClient.$closeResource(DefaultJobBundleFactory.java:478)
        at 
org.apache.beam.runners.fnexecution.control.DefaultJobBundleFactory$WrappedSdkHarnessClient.close(DefaultJobBundleFactory.java:478)
        at 
org.apache.beam.runners.fnexecution.control.DefaultJobBundleFactory$WrappedSdkHarnessClient.unref(DefaultJobBundleFactory.java:493)
        at 
org.apache.beam.runners.fnexecution.control.DefaultJobBundleFactory$WrappedSdkHarnessClient.access$1600(DefaultJobBundleFactory.java:431)
        at 
org.apache.beam.runners.fnexecution.control.DefaultJobBundleFactory.lambda$createEnvironmentCaches$3(DefaultJobBundleFactory.java:168)
        at 
org.apache.beam.vendor.guava.v26_0_jre.com.google.common.cache.LocalCache.processPendingNotifications(LocalCache.java:1809)
        at 
org.apache.beam.vendor.guava.v26_0_jre.com.google.common.cache.LocalCache$Segment.runUnlockedCleanup(LocalCache.java:3462)
        at 
org.apache.beam.vendor.guava.v26_0_jre.com.google.common.cache.LocalCache$Segment.postWriteCleanup(LocalCache.java:3438)
        at 
org.apache.beam.vendor.guava.v26_0_jre.com.google.common.cache.LocalCache$Segment.clear(LocalCache.java:3215)
        at 
org.apache.beam.vendor.guava.v26_0_jre.com.google.common.cache.LocalCache.clear(LocalCache.java:4270)
        at 
org.apache.beam.vendor.guava.v26_0_jre.com.google.common.cache.LocalCache$LocalManualCache.invalidateAll(LocalCache.java:4909)
        at 
org.apache.beam.runners.fnexecution.control.DefaultJobBundleFactory.close(DefaultJobBundleFactory.java:258)
        at 
org.apache.beam.runners.fnexecution.control.DefaultExecutableStageContext.close(DefaultExecutableStageContext.java:43)
        at 
org.apache.beam.runners.fnexecution.control.ReferenceCountingExecutableStageContextFactory$WrappedContext.closeActual(ReferenceCountingExecutableStageContextFactory.java:208)
        at 
org.apache.beam.runners.fnexecution.control.ReferenceCountingExecutableStageContextFactory$WrappedContext.access$200(ReferenceCountingExecutableStageContextFactory.java:184)
        at 
org.apache.beam.runners.fnexecution.control.ReferenceCountingExecutableStageContextFactory.release(ReferenceCountingExecutableStageContextFactory.java:173)
        at 
org.apache.beam.runners.fnexecution.control.ReferenceCountingExecutableStageContextFactory.scheduleRelease(ReferenceCountingExecutableStageContextFactory.java:132)
        at 
org.apache.beam.runners.fnexecution.control.ReferenceCountingExecutableStageContextFactory.access$300(ReferenceCountingExecutableStageContextFactory.java:44)
        at 
org.apache.beam.runners.fnexecution.control.ReferenceCountingExecutableStageContextFactory$WrappedContext.close(ReferenceCountingExecutableStageContextFactory.java:204)
        at 
org.apache.beam.runners.flink.translation.wrappers.streaming.ExecutableStageDoFnOperator.$closeResource(ExecutableStageDoFnOperator.java:455)
        at 
org.apache.beam.runners.flink.translation.wrappers.streaming.ExecutableStageDoFnOperator.dispose(ExecutableStageDoFnOperator.java:483)
        at 
org.apache.flink.streaming.runtime.tasks.StreamTask.tryDisposeAllOperators(StreamTask.java:562)
        at 
org.apache.flink.streaming.runtime.tasks.StreamTask.invoke(StreamTask.java:443)
        at org.apache.flink.runtime.taskmanager.Task.doRun(Task.java:705)
        at org.apache.flink.runtime.taskmanager.Task.run(Task.java:530)
        at java.lang.Thread.run(Thread.java:748)
[[1]write/Write/WriteImpl/FinalizeWrite (1/2)] INFO 
org.apache.flink.runtime.taskmanager.Task - 
[1]write/Write/WriteImpl/FinalizeWrite (1/2) (a15c5b3795e817e3177361034ca73c6b) 
switched from RUNNING to FINISHED.
[[1]write/Write/WriteImpl/FinalizeWrite (1/2)] INFO 
org.apache.flink.runtime.taskmanager.Task - Freeing task resources for 
[1]write/Write/WriteImpl/FinalizeWrite (1/2) (a15c5b3795e817e3177361034ca73c6b).
[[1]write/Write/WriteImpl/FinalizeWrite (1/2)] INFO 
org.apache.flink.runtime.taskmanager.Task - Ensuring all FileSystem streams are 
closed for task [1]write/Write/WriteImpl/FinalizeWrite (1/2) 
(a15c5b3795e817e3177361034ca73c6b) [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 
[1]write/Write/WriteImpl/FinalizeWrite a15c5b3795e817e3177361034ca73c6b.
[flink-akka.actor.default-dispatcher-3] INFO 
org.apache.flink.runtime.executiongraph.ExecutionGraph - 
[1]write/Write/WriteImpl/FinalizeWrite (1/2) (a15c5b3795e817e3177361034ca73c6b) 
switched from RUNNING to FINISHED.
[flink-akka.actor.default-dispatcher-3] INFO 
org.apache.flink.runtime.executiongraph.ExecutionGraph - Job 
BeamApp-root-0209065201-1173a0db (c0c2ebc786ea51518df194e3f2d89e73) switched 
from state RUNNING to FINISHED.
[flink-akka.actor.default-dispatcher-3] INFO 
org.apache.flink.runtime.checkpoint.CheckpointCoordinator - Stopping checkpoint 
coordinator for job c0c2ebc786ea51518df194e3f2d89e73.
[flink-akka.actor.default-dispatcher-3] INFO 
org.apache.flink.runtime.checkpoint.StandaloneCompletedCheckpointStore - 
Shutting down
[flink-akka.actor.default-dispatcher-4] INFO 
org.apache.flink.runtime.dispatcher.StandaloneDispatcher - Job 
c0c2ebc786ea51518df194e3f2d89e73 reached globally terminal state FINISHED.
[flink-akka.actor.default-dispatcher-3] INFO 
org.apache.flink.runtime.jobmaster.JobMaster - Stopping the JobMaster for job 
BeamApp-root-0209065201-1173a0db(c0c2ebc786ea51518df194e3f2d89e73).
[flink-akka.actor.default-dispatcher-3] INFO 
org.apache.flink.runtime.jobmaster.slotpool.SlotPoolImpl - Suspending SlotPool.
[flink-akka.actor.default-dispatcher-3] INFO 
org.apache.flink.runtime.jobmaster.JobMaster - Close ResourceManager connection 
383fdfa171b3db276987280a8161a22a: JobManager is shutting down..
[flink-akka.actor.default-dispatcher-4] INFO 
org.apache.flink.runtime.taskexecutor.slot.TaskSlotTable - Free slot 
TaskSlot(index:0, state:ACTIVE, resource profile: 
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directMemoryInMB=2147483647, nativeMemoryInMB=2147483647, 
networkMemoryInMB=2147483647, managedMemoryInMB=8136}, allocationId: 
59ade92b9af7b48629e48a86fe6caf34, jobId: c0c2ebc786ea51518df194e3f2d89e73).
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directMemoryInMB=2147483647, nativeMemoryInMB=2147483647, 
networkMemoryInMB=2147483647, managedMemoryInMB=8136}, allocationId: 
a771a00432d0b6ce2edc96395c527fc1, jobId: c0c2ebc786ea51518df194e3f2d89e73).
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org.apache.beam.runners.flink.FlinkPipelineRunner - __metricscontainers : 
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6format.None/beam:env:docker:v1:0:beam:metric:sampled_byte_size:v1 
{PCOLLECTION=ref_PCollection_PCollection_9}: DistributionResult{sum=677, 
count=32, min=19, max=25}, 
42read/Read/_SDFBoundedSourceWrapper/Impulse.None/beam:env:docker:v1:0:beam:metric:sampled_byte_size:v1
 {PCOLLECTION=ref_PCollection_PCollection_1/SplitAndSize0}: 
DistributionResult{sum=758, count=1, min=758, max=758}, 
40write/Write/WriteImpl/DoOnce/Map(decode).None/beam:env:docker:v1:1:beam:metric:sampled_byte_size:v1
 {PCOLLECTION=ref_PCollection_PCollection_21}: DistributionResult{sum=0, 
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40write/Write/WriteImpl/DoOnce/Map(decode).None/beam:env:docker:v1:2:beam:metric:sampled_byte_size:v1
 {PCOLLECTION=ref_PCollection_PCollection_22}: DistributionResult{sum=106, 
count=2, min=53, max=53}, 
19group/GroupByWindow.None/beam:env:docker:v1:0:beam:metric:sampled_byte_size:v1
 {PCOLLECTION=ref_PCollection_PCollection_7}: DistributionResult{sum=917, 
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36write/Write/WriteImpl/DoOnce/Impulse.None/beam:env:docker:v1:0:beam:metric:sampled_byte_size:v1
 {PCOLLECTION=ref_PCollection_PCollection_10}: DistributionResult{sum=13, 
count=1, min=13, max=13}, 
19group/GroupByWindow.None/beam:env:docker:v1:0:beam:metric:sampled_byte_size:v1
 {PCOLLECTION=ref_PCollection_PCollection_8}: DistributionResult{sum=718, 
count=37, min=17, max=23}, 
36write/Write/WriteImpl/DoOnce/Impulse.None/beam:env:docker:v1:0:beam:metric:sampled_byte_size:v1
 {PCOLLECTION=ref_PCollection_PCollection_11}: DistributionResult{sum=14, 
count=1, min=14, max=14}, 
19group/GroupByWindow.None/beam:env:docker:v1:0:beam:metric:sampled_byte_size:v1
 {PCOLLECTION=ref_PCollection_PCollection_9}: DistributionResult{sum=729, 
count=36, min=18, max=24}, 
36write/Write/WriteImpl/DoOnce/Impulse.None/beam:env:docker:v1:0:beam:metric:sampled_byte_size:v1
 {PCOLLECTION=ref_PCollection_PCollection_12}: DistributionResult{sum=14, 
count=1, min=14, max=14}))
[flink-runner-job-invoker] INFO 
org.apache.beam.runners.fnexecution.artifact.AbstractArtifactRetrievalService - 
Manifest at 
/tmp/beam-artifact-staging/job_7dc75ab2-b877-46c9-bedc-df39e31138f9/MANIFEST 
has 1 artifact locations
[flink-runner-job-invoker] INFO 
org.apache.beam.runners.fnexecution.artifact.BeamFileSystemArtifactStagingService
 - Removed dir 
/tmp/beam-artifact-staging/job_7dc75ab2-b877-46c9-bedc-df39e31138f9/
INFO:apache_beam.runners.portability.portable_runner:Job state changed to DONE
[grpc-default-executor-1] INFO 
org.apache.beam.runners.fnexecution.jobsubmission.InMemoryJobService - Getting 
job metrics for 
BeamApp-root-0209065201-1173a0db_95f899c5-77fa-434a-952a-8bcea7f77e96
[grpc-default-executor-1] INFO 
org.apache.beam.runners.fnexecution.jobsubmission.InMemoryJobService - Finished 
getting job metrics for 
BeamApp-root-0209065201-1173a0db_95f899c5-77fa-434a-952a-8bcea7f77e96
INFO:root:number of empty lines: 3
INFO:root:average word length: 3

FAILURE: Build failed with an exception.

* What went wrong:
Execution failed for task ':sdks:python:container:py37:docker'.
> Process 'command 'docker'' finished with non-zero exit value 1

* Try:
Run with --stacktrace option to get the stack trace. Run with --info or --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 6.0.
Use '--warning-mode all' to show the individual deprecation warnings.
See 
https://docs.gradle.org/5.2.1/userguide/command_line_interface.html#sec:command_line_warnings

BUILD FAILED in 4m 20s
82 actionable tasks: 19 executed, 63 up-to-date

Publishing build scan...
https://gradle.com/s/wl7qmi6kly3wg

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

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