Build failed in Jenkins: beam_PostCommit_Python_Verify #8386

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[CHAIN MapPartition (MapPartition at 
[3]{ExternalTransform(pytest:beam:transforms:filter_less_than), 
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GroupCombine: 
ExternalTransform(pytest:beam:transforms:count)/Combine.perKey(Count)/Group) -> 
Map (Key Extractor) 6136c37cfbda4ce295f18272dc936715.
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org.apache.flink.runtime.taskexecutor.TaskExecutor - Un-registering task and 
sending final execution state FINISHED to JobManager for task CHAIN 
MapPartition (MapPartition at 
[3]{ExternalTransform(pytest:beam:transforms:filter_less_than), 
ExternalTransform(pytest:beam:transforms:count)}) -> FlatMap (FlatMap at 
ExtractOutput[0]) -> Map (Key Extractor) -> GroupCombine (GroupCombine at 
GroupCombine: 
ExternalTransform(pytest:beam:transforms:count)/Combine.perKey(Count)/Group) -> 
Map (Key Extractor) c8c69cd3279940889b92f8a3d8709932.
[flink-akka.actor.default-dispatcher-7] INFO 
org.apache.flink.runtime.executiongraph.ExecutionGraph - CHAIN MapPartition 
(MapPartition at 
[3]{ExternalTransform(pytest:beam:transforms:filter_less_than), 
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ExtractOutput[0]) -> Map (Key Extractor) -> GroupCombine (GroupCombine at 
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org.apache.flink.runtime.executiongraph.ExecutionGraph - CHAIN MapPartition 
(MapPartition at 
[3]{ExternalTransform(pytest:beam:transforms:filter_less_than), 
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ExtractOutput[0]) -> Map (Key Extractor) -> GroupCombine (GroupCombine at 
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org.apache.flink.runtime.executiongraph.ExecutionGraph - CHAIN MapPartition 
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org.apache.flink.runtime.executiongraph.ExecutionGraph - CHAIN MapPartition 
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org.apache.flink.runtime.executiongraph.ExecutionGraph - Deploying CHAIN 
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to localhost
[flink-akka.actor.default-dispatcher-7] INFO 
org.apache.flink.runtime.taskexecutor.TaskExecutor - Received task CHAIN 
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[2]ExternalTransform(pytest:beam:transforms:count)/Combine.perKey(Count)/{Merge,
 ExtractOutputs}) -> FlatMap (FlatMap at ExtractOutput[0]) (1/2).
[CHAIN MapPartition (MapPartition at 
[2]ExternalTransform(pytest:beam:transforms:count)/Combine.perKey(Count)/{Merge,
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org.apache.flink.runtime.taskmanager.Task - CHAIN MapPartition (MapPartition at 
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(3c008eede6beceae3e416285f9e9e925) switched from CREATED to DEPLOYING.
[CHAIN MapPartition (MapPartition at 
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org.apache.flink.runtime.taskmanager.Task - Creating FileSystem stream leak 
safety net for task CHAIN MapPartition (MapPartition at 
[2]ExternalTransform(pytest:beam:transforms:count)/Combine.perKey(Count)/{Merge,
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(3c008eede6beceae3e416285f9e9e925) [DEPLOYING]
[CHAIN MapPartition (MapPartition at 
[2]ExternalTransform(pytest:beam:transforms:count)/Combine.perKey(Count)/{Merge,
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org.apache.flink.runtime.taskmanager.Task - Loading JAR files for task CHAIN 
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(3c008eede6beceae3e416285f9e9e925) [DEPLOYING].
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org.apache.flink.runtime.taskmanager.Task - Registering task at network: CHAIN 
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org.apache.flink.runtime.taskmanager.Task - CHAIN MapPartition (MapPartition at 
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org.apache.flink.runtime.executiongraph.ExecutionGraph - CHAIN MapPartition 
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(3c008eede6beceae3e416285f9e9e925) switched from DEPLOYING to RUNNING.
[CHAIN MapPartition (MapPartition at 
[2]ExternalTransform(pytest:beam:transforms:count)/Combine.perKey(Count)/{Merge,
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org.apache.flink.metrics.MetricGroup - The operator name MapPartition 
(MapPartition at 
[2]ExternalTransform(pytest:beam:transforms:count)/Combine.perKey(Count)/{Merge,
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org.apache.flink.runtime.executiongraph.ExecutionGraph - CHAIN MapPartition 
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org.apache.flink.runtime.executiongraph.ExecutionGraph - Deploying CHAIN 
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to localhost
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org.apache.flink.runtime.taskexecutor.TaskExecutor - Received task CHAIN 
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[2]ExternalTransform(pytest:beam:transforms:count)/Combine.perKey(Count)/{Merge,
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org.apache.flink.runtime.taskmanager.Task - CHAIN MapPartition (MapPartition at 
[2]ExternalTransform(pytest:beam:transforms:count)/Combine.perKey(Count)/{Merge,
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(eae6efed205e93ab8b508ebd00c7d4fe) switched from CREATED to DEPLOYING.
[CHAIN MapPartition (MapPartition at 
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org.apache.flink.runtime.taskmanager.Task - Creating FileSystem stream leak 
safety net for task CHAIN MapPartition (MapPartition at 
[2]ExternalTransform(pytest:beam:transforms:count)/Combine.perKey(Count)/{Merge,
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(eae6efed205e93ab8b508ebd00c7d4fe) [DEPLOYING]
[CHAIN MapPartition (MapPartition at 
[2]ExternalTransform(pytest:beam:transforms:count)/Combine.perKey(Count)/{Merge,
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org.apache.flink.runtime.taskmanager.Task - Loading JAR files for task CHAIN 
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[2]ExternalTransform(pytest:beam:transforms:count)/Combine.perKey(Count)/{Merge,
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(eae6efed205e93ab8b508ebd00c7d4fe) [DEPLOYING].
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org.apache.flink.runtime.taskmanager.Task - Registering task at network: CHAIN 
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[2]ExternalTransform(pytest:beam:transforms:count)/Combine.perKey(Count)/{Merge,
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(eae6efed205e93ab8b508ebd00c7d4fe) [DEPLOYING].
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org.apache.flink.runtime.taskmanager.Task - CHAIN MapPartition (MapPartition at 
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(eae6efed205e93ab8b508ebd00c7d4fe) switched from DEPLOYING to RUNNING.
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[CHAIN MapPartition (MapPartition at 
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org.apache.flink.metrics.MetricGroup - The operator name MapPartition 
(MapPartition at 
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[GroupReduce (GroupReduce at 
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org.apache.flink.runtime.taskexecutor.TaskExecutor - Un-registering task and 
sending final execution state FINISHED to JobManager for task GroupReduce 
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dac3e476755948a54f54852ed4812f54.
[flink-akka.actor.default-dispatcher-7] INFO 
org.apache.flink.runtime.taskexecutor.TaskExecutor - Un-registering task and 
sending final execution state FINISHED to JobManager for task GroupReduce 
(GroupReduce at 
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[flink-akka.actor.default-dispatcher-5] INFO 
org.apache.flink.runtime.executiongraph.ExecutionGraph - GroupReduce 
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org.apache.flink.runtime.executiongraph.ExecutionGraph - CHAIN MapPartition 
(MapPartition at [6]{Map(<lambda at external_test.py:212>), Map(<lambda at 
external_test.py:213>), assert_that}) -> FlatMap (FlatMap at ExtractOutput[0]) 
(1/2) (a0e8b08abbed4c3ed63505241150ee31) switched from CREATED to SCHEDULED.
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org.apache.flink.runtime.executiongraph.ExecutionGraph - CHAIN MapPartition 
(MapPartition at [6]{Map(<lambda at external_test.py:212>), Map(<lambda at 
external_test.py:213>), assert_that}) -> FlatMap (FlatMap at ExtractOutput[0]) 
(1/2) (a0e8b08abbed4c3ed63505241150ee31) switched from SCHEDULED to DEPLOYING.
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org.apache.flink.runtime.executiongraph.ExecutionGraph - Deploying CHAIN 
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[flink-akka.actor.default-dispatcher-3] INFO 
org.apache.flink.runtime.taskexecutor.TaskExecutor - Received task CHAIN 
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ExtractOutput[0]) (1/2).
[CHAIN MapPartition (MapPartition at [6]{Map(<lambda at external_test.py:212>), 
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ExtractOutput[0]) (1/2)] INFO org.apache.flink.runtime.taskmanager.Task - CHAIN 
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ExtractOutput[0]) (1/2) (a0e8b08abbed4c3ed63505241150ee31) switched from 
CREATED to DEPLOYING.
[CHAIN MapPartition (MapPartition at [6]{Map(<lambda at external_test.py:212>), 
Map(<lambda at external_test.py:213>), assert_that}) -> FlatMap (FlatMap at 
ExtractOutput[0]) (1/2)] INFO org.apache.flink.runtime.taskmanager.Task - 
Creating FileSystem stream leak safety net for task CHAIN MapPartition 
(MapPartition at [6]{Map(<lambda at external_test.py:212>), Map(<lambda at 
external_test.py:213>), assert_that}) -> FlatMap (FlatMap at ExtractOutput[0]) 
(1/2) (a0e8b08abbed4c3ed63505241150ee31) [DEPLOYING]
[CHAIN MapPartition (MapPartition at [6]{Map(<lambda at external_test.py:212>), 
Map(<lambda at external_test.py:213>), assert_that}) -> FlatMap (FlatMap at 
ExtractOutput[0]) (1/2)] INFO org.apache.flink.runtime.taskmanager.Task - 
Loading JAR files for task CHAIN MapPartition (MapPartition at [6]{Map(<lambda 
at external_test.py:212>), Map(<lambda at external_test.py:213>), assert_that}) 
-> FlatMap (FlatMap at ExtractOutput[0]) (1/2) 
(a0e8b08abbed4c3ed63505241150ee31) [DEPLOYING].
[CHAIN MapPartition (MapPartition at [6]{Map(<lambda at external_test.py:212>), 
Map(<lambda at external_test.py:213>), assert_that}) -> FlatMap (FlatMap at 
ExtractOutput[0]) (1/2)] INFO org.apache.flink.runtime.taskmanager.Task - 
Registering task at network: CHAIN MapPartition (MapPartition at 
[6]{Map(<lambda at external_test.py:212>), Map(<lambda at 
external_test.py:213>), assert_that}) -> FlatMap (FlatMap at ExtractOutput[0]) 
(1/2) (a0e8b08abbed4c3ed63505241150ee31) [DEPLOYING].
[CHAIN MapPartition (MapPartition at [6]{Map(<lambda at external_test.py:212>), 
Map(<lambda at external_test.py:213>), assert_that}) -> FlatMap (FlatMap at 
ExtractOutput[0]) (1/2)] INFO org.apache.flink.runtime.taskmanager.Task - CHAIN 
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Map(<lambda at external_test.py:213>), assert_that}) -> FlatMap (FlatMap at 
ExtractOutput[0]) (1/2) (a0e8b08abbed4c3ed63505241150ee31) switched from 
DEPLOYING to RUNNING.
[flink-akka.actor.default-dispatcher-3] INFO 
org.apache.flink.runtime.executiongraph.ExecutionGraph - CHAIN MapPartition 
(MapPartition at [6]{Map(<lambda at external_test.py:212>), Map(<lambda at 
external_test.py:213>), assert_that}) -> FlatMap (FlatMap at ExtractOutput[0]) 
(1/2) (a0e8b08abbed4c3ed63505241150ee31) switched from DEPLOYING to RUNNING.
[CHAIN MapPartition (MapPartition at [6]{Map(<lambda at external_test.py:212>), 
Map(<lambda at external_test.py:213>), assert_that}) -> FlatMap (FlatMap at 
ExtractOutput[0]) (1/2)] WARN org.apache.flink.metrics.MetricGroup - The 
operator name MapPartition (MapPartition at [6]{Map(<lambda at 
external_test.py:212>), Map(<lambda at external_test.py:213>), assert_that}) 
exceeded the 80 characters length limit and was truncated.
[CHAIN MapPartition (MapPartition at 
[2]ExternalTransform(pytest:beam:transforms:count)/Combine.perKey(Count)/{Merge,
 ExtractOutputs}) -> FlatMap (FlatMap at ExtractOutput[0]) (1/2)] INFO 
org.apache.flink.runtime.taskmanager.Task - CHAIN MapPartition (MapPartition at 
[2]ExternalTransform(pytest:beam:transforms:count)/Combine.perKey(Count)/{Merge,
 ExtractOutputs}) -> FlatMap (FlatMap at ExtractOutput[0]) (1/2) 
(3c008eede6beceae3e416285f9e9e925) switched from RUNNING to FINISHED.
[CHAIN MapPartition (MapPartition at 
[2]ExternalTransform(pytest:beam:transforms:count)/Combine.perKey(Count)/{Merge,
 ExtractOutputs}) -> FlatMap (FlatMap at ExtractOutput[0]) (1/2)] INFO 
org.apache.flink.runtime.taskmanager.Task - Freeing task resources for CHAIN 
MapPartition (MapPartition at 
[2]ExternalTransform(pytest:beam:transforms:count)/Combine.perKey(Count)/{Merge,
 ExtractOutputs}) -> FlatMap (FlatMap at ExtractOutput[0]) (1/2) 
(3c008eede6beceae3e416285f9e9e925).
[CHAIN MapPartition (MapPartition at 
[2]ExternalTransform(pytest:beam:transforms:count)/Combine.perKey(Count)/{Merge,
 ExtractOutputs}) -> FlatMap (FlatMap at ExtractOutput[0]) (1/2)] INFO 
org.apache.flink.runtime.taskmanager.Task - Ensuring all FileSystem streams are 
closed for task CHAIN MapPartition (MapPartition at 
[2]ExternalTransform(pytest:beam:transforms:count)/Combine.perKey(Count)/{Merge,
 ExtractOutputs}) -> FlatMap (FlatMap at ExtractOutput[0]) (1/2) 
(3c008eede6beceae3e416285f9e9e925) [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 CHAIN 
MapPartition (MapPartition at 
[2]ExternalTransform(pytest:beam:transforms:count)/Combine.perKey(Count)/{Merge,
 ExtractOutputs}) -> FlatMap (FlatMap at ExtractOutput[0]) 
3c008eede6beceae3e416285f9e9e925.
[flink-akka.actor.default-dispatcher-7] INFO 
org.apache.flink.runtime.executiongraph.ExecutionGraph - CHAIN MapPartition 
(MapPartition at 
[2]ExternalTransform(pytest:beam:transforms:count)/Combine.perKey(Count)/{Merge,
 ExtractOutputs}) -> FlatMap (FlatMap at ExtractOutput[0]) (1/2) 
(3c008eede6beceae3e416285f9e9e925) switched from RUNNING to FINISHED.
[jobmanager-future-thread-1] INFO 
org.apache.flink.runtime.executiongraph.ExecutionGraph - CHAIN MapPartition 
(MapPartition at [6]{Map(<lambda at external_test.py:212>), Map(<lambda at 
external_test.py:213>), assert_that}) -> FlatMap (FlatMap at ExtractOutput[0]) 
(2/2) (bf44f91e4e28790a8265b382cf914c7c) switched from CREATED to SCHEDULED.
[flink-akka.actor.default-dispatcher-3] INFO 
org.apache.flink.runtime.executiongraph.ExecutionGraph - CHAIN MapPartition 
(MapPartition at [6]{Map(<lambda at external_test.py:212>), Map(<lambda at 
external_test.py:213>), assert_that}) -> FlatMap (FlatMap at ExtractOutput[0]) 
(2/2) (bf44f91e4e28790a8265b382cf914c7c) switched from SCHEDULED to DEPLOYING.
[flink-akka.actor.default-dispatcher-3] INFO 
org.apache.flink.runtime.executiongraph.ExecutionGraph - Deploying CHAIN 
MapPartition (MapPartition at [6]{Map(<lambda at external_test.py:212>), 
Map(<lambda at external_test.py:213>), assert_that}) -> FlatMap (FlatMap at 
ExtractOutput[0]) (2/2) (attempt #0) to localhost
[flink-akka.actor.default-dispatcher-7] INFO 
org.apache.flink.runtime.taskexecutor.TaskExecutor - Received task CHAIN 
MapPartition (MapPartition at [6]{Map(<lambda at external_test.py:212>), 
Map(<lambda at external_test.py:213>), assert_that}) -> FlatMap (FlatMap at 
ExtractOutput[0]) (2/2).
[CHAIN MapPartition (MapPartition at [6]{Map(<lambda at external_test.py:212>), 
Map(<lambda at external_test.py:213>), assert_that}) -> FlatMap (FlatMap at 
ExtractOutput[0]) (2/2)] INFO org.apache.flink.runtime.taskmanager.Task - CHAIN 
MapPartition (MapPartition at [6]{Map(<lambda at external_test.py:212>), 
Map(<lambda at external_test.py:213>), assert_that}) -> FlatMap (FlatMap at 
ExtractOutput[0]) (2/2) (bf44f91e4e28790a8265b382cf914c7c) switched from 
CREATED to DEPLOYING.
[CHAIN MapPartition (MapPartition at [6]{Map(<lambda at external_test.py:212>), 
Map(<lambda at external_test.py:213>), assert_that}) -> FlatMap (FlatMap at 
ExtractOutput[0]) (2/2)] INFO org.apache.flink.runtime.taskmanager.Task - 
Creating FileSystem stream leak safety net for task CHAIN MapPartition 
(MapPartition at [6]{Map(<lambda at external_test.py:212>), Map(<lambda at 
external_test.py:213>), assert_that}) -> FlatMap (FlatMap at ExtractOutput[0]) 
(2/2) (bf44f91e4e28790a8265b382cf914c7c) [DEPLOYING]
[CHAIN MapPartition (MapPartition at [6]{Map(<lambda at external_test.py:212>), 
Map(<lambda at external_test.py:213>), assert_that}) -> FlatMap (FlatMap at 
ExtractOutput[0]) (2/2)] INFO org.apache.flink.runtime.taskmanager.Task - 
Loading JAR files for task CHAIN MapPartition (MapPartition at [6]{Map(<lambda 
at external_test.py:212>), Map(<lambda at external_test.py:213>), assert_that}) 
-> FlatMap (FlatMap at ExtractOutput[0]) (2/2) 
(bf44f91e4e28790a8265b382cf914c7c) [DEPLOYING].
[CHAIN MapPartition (MapPartition at [6]{Map(<lambda at external_test.py:212>), 
Map(<lambda at external_test.py:213>), assert_that}) -> FlatMap (FlatMap at 
ExtractOutput[0]) (2/2)] INFO org.apache.flink.runtime.taskmanager.Task - 
Registering task at network: CHAIN MapPartition (MapPartition at 
[6]{Map(<lambda at external_test.py:212>), Map(<lambda at 
external_test.py:213>), assert_that}) -> FlatMap (FlatMap at ExtractOutput[0]) 
(2/2) (bf44f91e4e28790a8265b382cf914c7c) [DEPLOYING].
[CHAIN MapPartition (MapPartition at [6]{Map(<lambda at external_test.py:212>), 
Map(<lambda at external_test.py:213>), assert_that}) -> FlatMap (FlatMap at 
ExtractOutput[0]) (2/2)] INFO org.apache.flink.runtime.taskmanager.Task - CHAIN 
MapPartition (MapPartition at [6]{Map(<lambda at external_test.py:212>), 
Map(<lambda at external_test.py:213>), assert_that}) -> FlatMap (FlatMap at 
ExtractOutput[0]) (2/2) (bf44f91e4e28790a8265b382cf914c7c) switched from 
DEPLOYING to RUNNING.
[CHAIN MapPartition (MapPartition at [6]{Map(<lambda at external_test.py:212>), 
Map(<lambda at external_test.py:213>), assert_that}) -> FlatMap (FlatMap at 
ExtractOutput[0]) (2/2)] WARN org.apache.flink.metrics.MetricGroup - The 
operator name MapPartition (MapPartition at [6]{Map(<lambda at 
external_test.py:212>), Map(<lambda at external_test.py:213>), assert_that}) 
exceeded the 80 characters length limit and was truncated.
[flink-akka.actor.default-dispatcher-7] INFO 
org.apache.flink.runtime.executiongraph.ExecutionGraph - CHAIN MapPartition 
(MapPartition at [6]{Map(<lambda at external_test.py:212>), Map(<lambda at 
external_test.py:213>), assert_that}) -> FlatMap (FlatMap at ExtractOutput[0]) 
(2/2) (bf44f91e4e28790a8265b382cf914c7c) switched from DEPLOYING to RUNNING.
[CHAIN MapPartition (MapPartition at 
[2]ExternalTransform(pytest:beam:transforms:count)/Combine.perKey(Count)/{Merge,
 ExtractOutputs}) -> FlatMap (FlatMap at ExtractOutput[0]) (2/2)] INFO 
org.apache.flink.runtime.taskmanager.Task - CHAIN MapPartition (MapPartition at 
[2]ExternalTransform(pytest:beam:transforms:count)/Combine.perKey(Count)/{Merge,
 ExtractOutputs}) -> FlatMap (FlatMap at ExtractOutput[0]) (2/2) 
(eae6efed205e93ab8b508ebd00c7d4fe) switched from RUNNING to FINISHED.
[CHAIN MapPartition (MapPartition at 
[2]ExternalTransform(pytest:beam:transforms:count)/Combine.perKey(Count)/{Merge,
 ExtractOutputs}) -> FlatMap (FlatMap at ExtractOutput[0]) (2/2)] INFO 
org.apache.flink.runtime.taskmanager.Task - Freeing task resources for CHAIN 
MapPartition (MapPartition at 
[2]ExternalTransform(pytest:beam:transforms:count)/Combine.perKey(Count)/{Merge,
 ExtractOutputs}) -> FlatMap (FlatMap at ExtractOutput[0]) (2/2) 
(eae6efed205e93ab8b508ebd00c7d4fe).
[CHAIN MapPartition (MapPartition at 
[2]ExternalTransform(pytest:beam:transforms:count)/Combine.perKey(Count)/{Merge,
 ExtractOutputs}) -> FlatMap (FlatMap at ExtractOutput[0]) (2/2)] INFO 
org.apache.flink.runtime.taskmanager.Task - Ensuring all FileSystem streams are 
closed for task CHAIN MapPartition (MapPartition at 
[2]ExternalTransform(pytest:beam:transforms:count)/Combine.perKey(Count)/{Merge,
 ExtractOutputs}) -> FlatMap (FlatMap at ExtractOutput[0]) (2/2) 
(eae6efed205e93ab8b508ebd00c7d4fe) [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 CHAIN 
MapPartition (MapPartition at 
[2]ExternalTransform(pytest:beam:transforms:count)/Combine.perKey(Count)/{Merge,
 ExtractOutputs}) -> FlatMap (FlatMap at ExtractOutput[0]) 
eae6efed205e93ab8b508ebd00c7d4fe.
[flink-akka.actor.default-dispatcher-7] INFO 
org.apache.flink.runtime.executiongraph.ExecutionGraph - CHAIN MapPartition 
(MapPartition at 
[2]ExternalTransform(pytest:beam:transforms:count)/Combine.perKey(Count)/{Merge,
 ExtractOutputs}) -> FlatMap (FlatMap at ExtractOutput[0]) (2/2) 
(eae6efed205e93ab8b508ebd00c7d4fe) switched from RUNNING to FINISHED.
[grpc-default-executor-1] WARN bundle_processor.create_operation - No unique 
name set for transform fn/write/ref_PCollection_PCollection_24:1:0 
[grpc-default-executor-1] WARN bundle_processor.create_operation - No unique 
name set for transform fn/write/ref_PCollection_PCollection_24:1:0 
[grpc-default-executor-1] WARN bundle_processor.create_operation - No unique 
name set for transform fn/read/ref_PCollection_PCollection_14:0 
[grpc-default-executor-1] WARN bundle_processor.create_operation - No unique 
name set for transform fn/read/ref_PCollection_PCollection_14:0 
[CHAIN MapPartition (MapPartition at [6]{Map(<lambda at external_test.py:212>), 
Map(<lambda at external_test.py:213>), assert_that}) -> FlatMap (FlatMap at 
ExtractOutput[0]) (2/2)] INFO org.apache.flink.runtime.taskmanager.Task - CHAIN 
MapPartition (MapPartition at [6]{Map(<lambda at external_test.py:212>), 
Map(<lambda at external_test.py:213>), assert_that}) -> FlatMap (FlatMap at 
ExtractOutput[0]) (2/2) (bf44f91e4e28790a8265b382cf914c7c) switched from 
RUNNING to FINISHED.
[CHAIN MapPartition (MapPartition at [6]{Map(<lambda at external_test.py:212>), 
Map(<lambda at external_test.py:213>), assert_that}) -> FlatMap (FlatMap at 
ExtractOutput[0]) (2/2)] INFO org.apache.flink.runtime.taskmanager.Task - 
Freeing task resources for CHAIN MapPartition (MapPartition at [6]{Map(<lambda 
at external_test.py:212>), Map(<lambda at external_test.py:213>), assert_that}) 
-> FlatMap (FlatMap at ExtractOutput[0]) (2/2) 
(bf44f91e4e28790a8265b382cf914c7c).
[CHAIN MapPartition (MapPartition at [6]{Map(<lambda at external_test.py:212>), 
Map(<lambda at external_test.py:213>), assert_that}) -> FlatMap (FlatMap at 
ExtractOutput[0]) (2/2)] INFO org.apache.flink.runtime.taskmanager.Task - 
Ensuring all FileSystem streams are closed for task CHAIN MapPartition 
(MapPartition at [6]{Map(<lambda at external_test.py:212>), Map(<lambda at 
external_test.py:213>), assert_that}) -> FlatMap (FlatMap at ExtractOutput[0]) 
(2/2) (bf44f91e4e28790a8265b382cf914c7c) [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 CHAIN 
MapPartition (MapPartition at [6]{Map(<lambda at external_test.py:212>), 
Map(<lambda at external_test.py:213>), assert_that}) -> FlatMap (FlatMap at 
ExtractOutput[0]) bf44f91e4e28790a8265b382cf914c7c.
[jobmanager-future-thread-13] INFO 
org.apache.flink.runtime.executiongraph.ExecutionGraph - GroupReduce 
(GroupReduce at assert_that/Group/GroupByKey) (1/2) 
(7b75896a43b48861bdc0e62972cca915) switched from CREATED to SCHEDULED.
[jobmanager-future-thread-2] INFO 
org.apache.flink.runtime.executiongraph.ExecutionGraph - GroupReduce 
(GroupReduce at assert_that/Group/GroupByKey) (2/2) 
(e583ab36a8f2b6b0ca2d3718e73bfe7f) switched from CREATED to SCHEDULED.
[flink-akka.actor.default-dispatcher-4] INFO 
org.apache.flink.runtime.executiongraph.ExecutionGraph - GroupReduce 
(GroupReduce at assert_that/Group/GroupByKey) (2/2) 
(e583ab36a8f2b6b0ca2d3718e73bfe7f) switched from SCHEDULED to DEPLOYING.
[flink-akka.actor.default-dispatcher-3] INFO 
org.apache.flink.runtime.executiongraph.ExecutionGraph - GroupReduce 
(GroupReduce at assert_that/Group/GroupByKey) (1/2) 
(7b75896a43b48861bdc0e62972cca915) switched from SCHEDULED to DEPLOYING.
[flink-akka.actor.default-dispatcher-4] INFO 
org.apache.flink.runtime.executiongraph.ExecutionGraph - Deploying GroupReduce 
(GroupReduce at assert_that/Group/GroupByKey) (2/2) (attempt #0) to localhost
[flink-akka.actor.default-dispatcher-3] INFO 
org.apache.flink.runtime.executiongraph.ExecutionGraph - Deploying GroupReduce 
(GroupReduce at assert_that/Group/GroupByKey) (1/2) (attempt #0) to localhost
[flink-akka.actor.default-dispatcher-5] INFO 
org.apache.flink.runtime.taskexecutor.TaskExecutor - Received task GroupReduce 
(GroupReduce at assert_that/Group/GroupByKey) (2/2).
[GroupReduce (GroupReduce at assert_that/Group/GroupByKey) (2/2)] INFO 
org.apache.flink.runtime.taskmanager.Task - GroupReduce (GroupReduce at 
assert_that/Group/GroupByKey) (2/2) (e583ab36a8f2b6b0ca2d3718e73bfe7f) switched 
from CREATED to DEPLOYING.
[GroupReduce (GroupReduce at assert_that/Group/GroupByKey) (2/2)] INFO 
org.apache.flink.runtime.taskmanager.Task - Creating FileSystem stream leak 
safety net for task GroupReduce (GroupReduce at assert_that/Group/GroupByKey) 
(2/2) (e583ab36a8f2b6b0ca2d3718e73bfe7f) [DEPLOYING]
[GroupReduce (GroupReduce at assert_that/Group/GroupByKey) (2/2)] INFO 
org.apache.flink.runtime.taskmanager.Task - Loading JAR files for task 
GroupReduce (GroupReduce at assert_that/Group/GroupByKey) (2/2) 
(e583ab36a8f2b6b0ca2d3718e73bfe7f) [DEPLOYING].
[flink-akka.actor.default-dispatcher-5] INFO 
org.apache.flink.runtime.taskexecutor.TaskExecutor - Received task GroupReduce 
(GroupReduce at assert_that/Group/GroupByKey) (1/2).
[GroupReduce (GroupReduce at assert_that/Group/GroupByKey) (2/2)] INFO 
org.apache.flink.runtime.taskmanager.Task - Registering task at network: 
GroupReduce (GroupReduce at assert_that/Group/GroupByKey) (2/2) 
(e583ab36a8f2b6b0ca2d3718e73bfe7f) [DEPLOYING].
[flink-akka.actor.default-dispatcher-7] INFO 
org.apache.flink.runtime.executiongraph.ExecutionGraph - CHAIN MapPartition 
(MapPartition at [6]{Map(<lambda at external_test.py:212>), Map(<lambda at 
external_test.py:213>), assert_that}) -> FlatMap (FlatMap at ExtractOutput[0]) 
(2/2) (bf44f91e4e28790a8265b382cf914c7c) switched from RUNNING to FINISHED.
[GroupReduce (GroupReduce at assert_that/Group/GroupByKey) (1/2)] INFO 
org.apache.flink.runtime.taskmanager.Task - GroupReduce (GroupReduce at 
assert_that/Group/GroupByKey) (1/2) (7b75896a43b48861bdc0e62972cca915) switched 
from CREATED to DEPLOYING.
[GroupReduce (GroupReduce at assert_that/Group/GroupByKey) (2/2)] INFO 
org.apache.flink.runtime.taskmanager.Task - GroupReduce (GroupReduce at 
assert_that/Group/GroupByKey) (2/2) (e583ab36a8f2b6b0ca2d3718e73bfe7f) switched 
from DEPLOYING to RUNNING.
[GroupReduce (GroupReduce at assert_that/Group/GroupByKey) (1/2)] INFO 
org.apache.flink.runtime.taskmanager.Task - Creating FileSystem stream leak 
safety net for task GroupReduce (GroupReduce at assert_that/Group/GroupByKey) 
(1/2) (7b75896a43b48861bdc0e62972cca915) [DEPLOYING]
[GroupReduce (GroupReduce at assert_that/Group/GroupByKey) (1/2)] INFO 
org.apache.flink.runtime.taskmanager.Task - Loading JAR files for task 
GroupReduce (GroupReduce at assert_that/Group/GroupByKey) (1/2) 
(7b75896a43b48861bdc0e62972cca915) [DEPLOYING].
[GroupReduce (GroupReduce at assert_that/Group/GroupByKey) (1/2)] INFO 
org.apache.flink.runtime.taskmanager.Task - Registering task at network: 
GroupReduce (GroupReduce at assert_that/Group/GroupByKey) (1/2) 
(7b75896a43b48861bdc0e62972cca915) [DEPLOYING].
[GroupReduce (GroupReduce at assert_that/Group/GroupByKey) (1/2)] INFO 
org.apache.flink.runtime.taskmanager.Task - GroupReduce (GroupReduce at 
assert_that/Group/GroupByKey) (1/2) (7b75896a43b48861bdc0e62972cca915) switched 
from DEPLOYING to RUNNING.
[flink-akka.actor.default-dispatcher-7] INFO 
org.apache.flink.runtime.executiongraph.ExecutionGraph - GroupReduce 
(GroupReduce at assert_that/Group/GroupByKey) (2/2) 
(e583ab36a8f2b6b0ca2d3718e73bfe7f) switched from DEPLOYING to RUNNING.
[flink-akka.actor.default-dispatcher-7] INFO 
org.apache.flink.runtime.executiongraph.ExecutionGraph - GroupReduce 
(GroupReduce at assert_that/Group/GroupByKey) (1/2) 
(7b75896a43b48861bdc0e62972cca915) switched from DEPLOYING to RUNNING.
[CHAIN MapPartition (MapPartition at [6]{Map(<lambda at external_test.py:212>), 
Map(<lambda at external_test.py:213>), assert_that}) -> FlatMap (FlatMap at 
ExtractOutput[0]) (1/2)] INFO org.apache.flink.runtime.taskmanager.Task - CHAIN 
MapPartition (MapPartition at [6]{Map(<lambda at external_test.py:212>), 
Map(<lambda at external_test.py:213>), assert_that}) -> FlatMap (FlatMap at 
ExtractOutput[0]) (1/2) (a0e8b08abbed4c3ed63505241150ee31) switched from 
RUNNING to FINISHED.
[CHAIN MapPartition (MapPartition at [6]{Map(<lambda at external_test.py:212>), 
Map(<lambda at external_test.py:213>), assert_that}) -> FlatMap (FlatMap at 
ExtractOutput[0]) (1/2)] INFO org.apache.flink.runtime.taskmanager.Task - 
Freeing task resources for CHAIN MapPartition (MapPartition at [6]{Map(<lambda 
at external_test.py:212>), Map(<lambda at external_test.py:213>), assert_that}) 
-> FlatMap (FlatMap at ExtractOutput[0]) (1/2) 
(a0e8b08abbed4c3ed63505241150ee31).
[CHAIN Filter (UnionFixFilter) -> Map (Key Extractor) -> GroupCombine 
(GroupCombine at GroupCombine: assert_that/Group/GroupByKey) -> Map (Key 
Extractor) (2/2)] INFO org.apache.flink.runtime.taskmanager.Task - CHAIN Filter 
(UnionFixFilter) -> Map (Key Extractor) -> GroupCombine (GroupCombine at 
GroupCombine: assert_that/Group/GroupByKey) -> Map (Key Extractor) (2/2) 
(4d03f55ce1c9548cbc5723443ce830d3) switched from RUNNING to FINISHED.
[CHAIN Filter (UnionFixFilter) -> Map (Key Extractor) -> GroupCombine 
(GroupCombine at GroupCombine: assert_that/Group/GroupByKey) -> Map (Key 
Extractor) (2/2)] INFO org.apache.flink.runtime.taskmanager.Task - Freeing task 
resources for CHAIN Filter (UnionFixFilter) -> Map (Key Extractor) -> 
GroupCombine (GroupCombine at GroupCombine: assert_that/Group/GroupByKey) -> 
Map (Key Extractor) (2/2) (4d03f55ce1c9548cbc5723443ce830d3).
[CHAIN Filter (UnionFixFilter) -> Map (Key Extractor) -> GroupCombine 
(GroupCombine at GroupCombine: assert_that/Group/GroupByKey) -> Map (Key 
Extractor) (1/2)] INFO org.apache.flink.runtime.taskmanager.Task - CHAIN Filter 
(UnionFixFilter) -> Map (Key Extractor) -> GroupCombine (GroupCombine at 
GroupCombine: assert_that/Group/GroupByKey) -> Map (Key Extractor) (1/2) 
(56c3e0032ed90e3742742f2780a37de0) switched from RUNNING to FINISHED.
[CHAIN Filter (UnionFixFilter) -> Map (Key Extractor) -> GroupCombine 
(GroupCombine at GroupCombine: assert_that/Group/GroupByKey) -> Map (Key 
Extractor) (1/2)] INFO org.apache.flink.runtime.taskmanager.Task - Freeing task 
resources for CHAIN Filter (UnionFixFilter) -> Map (Key Extractor) -> 
GroupCombine (GroupCombine at GroupCombine: assert_that/Group/GroupByKey) -> 
Map (Key Extractor) (1/2) (56c3e0032ed90e3742742f2780a37de0).
[CHAIN MapPartition (MapPartition at [6]{Map(<lambda at external_test.py:212>), 
Map(<lambda at external_test.py:213>), assert_that}) -> FlatMap (FlatMap at 
ExtractOutput[0]) (1/2)] INFO org.apache.flink.runtime.taskmanager.Task - 
Ensuring all FileSystem streams are closed for task CHAIN MapPartition 
(MapPartition at [6]{Map(<lambda at external_test.py:212>), Map(<lambda at 
external_test.py:213>), assert_that}) -> FlatMap (FlatMap at ExtractOutput[0]) 
(1/2) (a0e8b08abbed4c3ed63505241150ee31) [FINISHED]
[CHAIN Filter (UnionFixFilter) -> Map (Key Extractor) -> GroupCombine 
(GroupCombine at GroupCombine: assert_that/Group/GroupByKey) -> Map (Key 
Extractor) (1/2)] INFO org.apache.flink.runtime.taskmanager.Task - Ensuring all 
FileSystem streams are closed for task CHAIN Filter (UnionFixFilter) -> Map 
(Key Extractor) -> GroupCombine (GroupCombine at GroupCombine: 
assert_that/Group/GroupByKey) -> Map (Key Extractor) (1/2) 
(56c3e0032ed90e3742742f2780a37de0) [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 CHAIN 
MapPartition (MapPartition at [6]{Map(<lambda at external_test.py:212>), 
Map(<lambda at external_test.py:213>), assert_that}) -> FlatMap (FlatMap at 
ExtractOutput[0]) a0e8b08abbed4c3ed63505241150ee31.
[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 CHAIN Filter 
(UnionFixFilter) -> Map (Key Extractor) -> GroupCombine (GroupCombine at 
GroupCombine: assert_that/Group/GroupByKey) -> Map (Key Extractor) 
56c3e0032ed90e3742742f2780a37de0.
[flink-akka.actor.default-dispatcher-4] INFO 
org.apache.flink.runtime.executiongraph.ExecutionGraph - CHAIN MapPartition 
(MapPartition at [6]{Map(<lambda at external_test.py:212>), Map(<lambda at 
external_test.py:213>), assert_that}) -> FlatMap (FlatMap at ExtractOutput[0]) 
(1/2) (a0e8b08abbed4c3ed63505241150ee31) switched from RUNNING to FINISHED.
[flink-akka.actor.default-dispatcher-4] INFO 
org.apache.flink.runtime.executiongraph.ExecutionGraph - CHAIN Filter 
(UnionFixFilter) -> Map (Key Extractor) -> GroupCombine (GroupCombine at 
GroupCombine: assert_that/Group/GroupByKey) -> Map (Key Extractor) (1/2) 
(56c3e0032ed90e3742742f2780a37de0) switched from RUNNING to FINISHED.
[CHAIN Filter (UnionFixFilter) -> Map (Key Extractor) -> GroupCombine 
(GroupCombine at GroupCombine: assert_that/Group/GroupByKey) -> Map (Key 
Extractor) (2/2)] INFO org.apache.flink.runtime.taskmanager.Task - Ensuring all 
FileSystem streams are closed for task CHAIN Filter (UnionFixFilter) -> Map 
(Key Extractor) -> GroupCombine (GroupCombine at GroupCombine: 
assert_that/Group/GroupByKey) -> Map (Key Extractor) (2/2) 
(4d03f55ce1c9548cbc5723443ce830d3) [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 CHAIN Filter 
(UnionFixFilter) -> Map (Key Extractor) -> GroupCombine (GroupCombine at 
GroupCombine: assert_that/Group/GroupByKey) -> Map (Key Extractor) 
4d03f55ce1c9548cbc5723443ce830d3.
[flink-akka.actor.default-dispatcher-7] INFO 
org.apache.flink.runtime.executiongraph.ExecutionGraph - CHAIN Filter 
(UnionFixFilter) -> Map (Key Extractor) -> GroupCombine (GroupCombine at 
GroupCombine: assert_that/Group/GroupByKey) -> Map (Key Extractor) (2/2) 
(4d03f55ce1c9548cbc5723443ce830d3) switched from RUNNING to FINISHED.
[jobmanager-future-thread-12] INFO 
org.apache.flink.runtime.executiongraph.ExecutionGraph - MapPartition 
(MapPartition at [3]assert_that/{Group, Unkey, Match}) (2/2) 
(444f7ad2e182b4d708b6f4377a536b76) switched from CREATED to SCHEDULED.
[flink-akka.actor.default-dispatcher-7] INFO 
org.apache.flink.runtime.executiongraph.ExecutionGraph - MapPartition 
(MapPartition at [3]assert_that/{Group, Unkey, Match}) (2/2) 
(444f7ad2e182b4d708b6f4377a536b76) switched from SCHEDULED to DEPLOYING.
[flink-akka.actor.default-dispatcher-7] INFO 
org.apache.flink.runtime.executiongraph.ExecutionGraph - Deploying MapPartition 
(MapPartition at [3]assert_that/{Group, Unkey, Match}) (2/2) (attempt #0) to 
localhost
[GroupReduce (GroupReduce at assert_that/Group/GroupByKey) (1/2)] INFO 
org.apache.flink.runtime.taskmanager.Task - GroupReduce (GroupReduce at 
assert_that/Group/GroupByKey) (1/2) (7b75896a43b48861bdc0e62972cca915) switched 
from RUNNING to FINISHED.
[GroupReduce (GroupReduce at assert_that/Group/GroupByKey) (1/2)] INFO 
org.apache.flink.runtime.taskmanager.Task - Freeing task resources for 
GroupReduce (GroupReduce at assert_that/Group/GroupByKey) (1/2) 
(7b75896a43b48861bdc0e62972cca915).
[jobmanager-future-thread-11] INFO 
org.apache.flink.runtime.executiongraph.ExecutionGraph - MapPartition 
(MapPartition at [3]assert_that/{Group, Unkey, Match}) (1/2) 
(bcd28107daf38597d8ea61a60f4a80aa) switched from CREATED to SCHEDULED.
[flink-akka.actor.default-dispatcher-5] INFO 
org.apache.flink.runtime.executiongraph.ExecutionGraph - MapPartition 
(MapPartition at [3]assert_that/{Group, Unkey, Match}) (1/2) 
(bcd28107daf38597d8ea61a60f4a80aa) switched from SCHEDULED to DEPLOYING.
[flink-akka.actor.default-dispatcher-5] INFO 
org.apache.flink.runtime.executiongraph.ExecutionGraph - Deploying MapPartition 
(MapPartition at [3]assert_that/{Group, Unkey, Match}) (1/2) (attempt #0) to 
localhost
[flink-akka.actor.default-dispatcher-4] INFO 
org.apache.flink.runtime.taskexecutor.TaskExecutor - Received task MapPartition 
(MapPartition at [3]assert_that/{Group, Unkey, Match}) (2/2).
[MapPartition (MapPartition at [3]assert_that/{Group, Unkey, Match}) (2/2)] 
INFO org.apache.flink.runtime.taskmanager.Task - MapPartition (MapPartition at 
[3]assert_that/{Group, Unkey, Match}) (2/2) (444f7ad2e182b4d708b6f4377a536b76) 
switched from CREATED to DEPLOYING.
[MapPartition (MapPartition at [3]assert_that/{Group, Unkey, Match}) (2/2)] 
INFO org.apache.flink.runtime.taskmanager.Task - Creating FileSystem stream 
leak safety net for task MapPartition (MapPartition at [3]assert_that/{Group, 
Unkey, Match}) (2/2) (444f7ad2e182b4d708b6f4377a536b76) [DEPLOYING]
[MapPartition (MapPartition at [3]assert_that/{Group, Unkey, Match}) (2/2)] 
INFO org.apache.flink.runtime.taskmanager.Task - Loading JAR files for task 
MapPartition (MapPartition at [3]assert_that/{Group, Unkey, Match}) (2/2) 
(444f7ad2e182b4d708b6f4377a536b76) [DEPLOYING].
[MapPartition (MapPartition at [3]assert_that/{Group, Unkey, Match}) (2/2)] 
INFO org.apache.flink.runtime.taskmanager.Task - Registering task at network: 
MapPartition (MapPartition at [3]assert_that/{Group, Unkey, Match}) (2/2) 
(444f7ad2e182b4d708b6f4377a536b76) [DEPLOYING].
[flink-akka.actor.default-dispatcher-4] INFO 
org.apache.flink.runtime.taskexecutor.TaskExecutor - Received task MapPartition 
(MapPartition at [3]assert_that/{Group, Unkey, Match}) (1/2).
[MapPartition (MapPartition at [3]assert_that/{Group, Unkey, Match}) (1/2)] 
INFO org.apache.flink.runtime.taskmanager.Task - MapPartition (MapPartition at 
[3]assert_that/{Group, Unkey, Match}) (1/2) (bcd28107daf38597d8ea61a60f4a80aa) 
switched from CREATED to DEPLOYING.
[MapPartition (MapPartition at [3]assert_that/{Group, Unkey, Match}) (2/2)] 
INFO org.apache.flink.runtime.taskmanager.Task - MapPartition (MapPartition at 
[3]assert_that/{Group, Unkey, Match}) (2/2) (444f7ad2e182b4d708b6f4377a536b76) 
switched from DEPLOYING to RUNNING.
[MapPartition (MapPartition at [3]assert_that/{Group, Unkey, Match}) (1/2)] 
INFO org.apache.flink.runtime.taskmanager.Task - Creating FileSystem stream 
leak safety net for task MapPartition (MapPartition at [3]assert_that/{Group, 
Unkey, Match}) (1/2) (bcd28107daf38597d8ea61a60f4a80aa) [DEPLOYING]
[MapPartition (MapPartition at [3]assert_that/{Group, Unkey, Match}) (1/2)] 
INFO org.apache.flink.runtime.taskmanager.Task - Loading JAR files for task 
MapPartition (MapPartition at [3]assert_that/{Group, Unkey, Match}) (1/2) 
(bcd28107daf38597d8ea61a60f4a80aa) [DEPLOYING].
[flink-akka.actor.default-dispatcher-4] INFO 
org.apache.flink.runtime.executiongraph.ExecutionGraph - MapPartition 
(MapPartition at [3]assert_that/{Group, Unkey, Match}) (2/2) 
(444f7ad2e182b4d708b6f4377a536b76) switched from DEPLOYING to RUNNING.
[MapPartition (MapPartition at [3]assert_that/{Group, Unkey, Match}) (1/2)] 
INFO org.apache.flink.runtime.taskmanager.Task - Registering task at network: 
MapPartition (MapPartition at [3]assert_that/{Group, Unkey, Match}) (1/2) 
(bcd28107daf38597d8ea61a60f4a80aa) [DEPLOYING].
[MapPartition (MapPartition at [3]assert_that/{Group, Unkey, Match}) (1/2)] 
INFO org.apache.flink.runtime.taskmanager.Task - MapPartition (MapPartition at 
[3]assert_that/{Group, Unkey, Match}) (1/2) (bcd28107daf38597d8ea61a60f4a80aa) 
switched from DEPLOYING to RUNNING.
[flink-akka.actor.default-dispatcher-4] INFO 
org.apache.flink.runtime.executiongraph.ExecutionGraph - MapPartition 
(MapPartition at [3]assert_that/{Group, Unkey, Match}) (1/2) 
(bcd28107daf38597d8ea61a60f4a80aa) switched from DEPLOYING to RUNNING.
[GroupReduce (GroupReduce at assert_that/Group/GroupByKey) (2/2)] INFO 
org.apache.flink.runtime.taskmanager.Task - GroupReduce (GroupReduce at 
assert_that/Group/GroupByKey) (2/2) (e583ab36a8f2b6b0ca2d3718e73bfe7f) switched 
from RUNNING to FINISHED.
[GroupReduce (GroupReduce at assert_that/Group/GroupByKey) (2/2)] INFO 
org.apache.flink.runtime.taskmanager.Task - Freeing task resources for 
GroupReduce (GroupReduce at assert_that/Group/GroupByKey) (2/2) 
(e583ab36a8f2b6b0ca2d3718e73bfe7f).
[GroupReduce (GroupReduce at assert_that/Group/GroupByKey) (1/2)] INFO 
org.apache.flink.runtime.taskmanager.Task - Ensuring all FileSystem streams are 
closed for task GroupReduce (GroupReduce at assert_that/Group/GroupByKey) (1/2) 
(7b75896a43b48861bdc0e62972cca915) [FINISHED]
[GroupReduce (GroupReduce at assert_that/Group/GroupByKey) (2/2)] INFO 
org.apache.flink.runtime.taskmanager.Task - Ensuring all FileSystem streams are 
closed for task GroupReduce (GroupReduce at assert_that/Group/GroupByKey) (2/2) 
(e583ab36a8f2b6b0ca2d3718e73bfe7f) [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 GroupReduce 
(GroupReduce at assert_that/Group/GroupByKey) 7b75896a43b48861bdc0e62972cca915.
[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 GroupReduce 
(GroupReduce at assert_that/Group/GroupByKey) e583ab36a8f2b6b0ca2d3718e73bfe7f.
[flink-akka.actor.default-dispatcher-5] INFO 
org.apache.flink.runtime.executiongraph.ExecutionGraph - GroupReduce 
(GroupReduce at assert_that/Group/GroupByKey) (1/2) 
(7b75896a43b48861bdc0e62972cca915) switched from RUNNING to FINISHED.
[flink-akka.actor.default-dispatcher-5] INFO 
org.apache.flink.runtime.executiongraph.ExecutionGraph - GroupReduce 
(GroupReduce at assert_that/Group/GroupByKey) (2/2) 
(e583ab36a8f2b6b0ca2d3718e73bfe7f) switched from RUNNING to FINISHED.
[grpc-default-executor-0] WARN bundle_processor.create_operation - No unique 
name set for transform fn/read/ref_PCollection_PCollection_27:0 
[grpc-default-executor-0] WARN bundle_processor.create_operation - No unique 
name set for transform fn/read/ref_PCollection_PCollection_27:0 
[MapPartition (MapPartition at [3]assert_that/{Group, Unkey, Match}) (2/2)] 
INFO org.apache.flink.runtime.taskmanager.Task - MapPartition (MapPartition at 
[3]assert_that/{Group, Unkey, Match}) (2/2) (444f7ad2e182b4d708b6f4377a536b76) 
switched from RUNNING to FINISHED.
[MapPartition (MapPartition at [3]assert_that/{Group, Unkey, Match}) (2/2)] 
INFO org.apache.flink.runtime.taskmanager.Task - Freeing task resources for 
MapPartition (MapPartition at [3]assert_that/{Group, Unkey, Match}) (2/2) 
(444f7ad2e182b4d708b6f4377a536b76).
[MapPartition (MapPartition at [3]assert_that/{Group, Unkey, Match}) (2/2)] 
INFO org.apache.flink.runtime.taskmanager.Task - Ensuring all FileSystem 
streams are closed for task MapPartition (MapPartition at 
[3]assert_that/{Group, Unkey, Match}) (2/2) (444f7ad2e182b4d708b6f4377a536b76) 
[FINISHED]
[jobmanager-future-thread-6] INFO 
org.apache.flink.runtime.executiongraph.ExecutionGraph - DataSink 
(DiscardingOutput) (2/2) (f12554c292ec2e589befc6898968ab87) switched from 
CREATED to SCHEDULED.
[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 MapPartition 
(MapPartition at [3]assert_that/{Group, Unkey, Match}) 
444f7ad2e182b4d708b6f4377a536b76.
[flink-akka.actor.default-dispatcher-3] INFO 
org.apache.flink.runtime.executiongraph.ExecutionGraph - DataSink 
(DiscardingOutput) (2/2) (f12554c292ec2e589befc6898968ab87) switched from 
SCHEDULED to DEPLOYING.
[flink-akka.actor.default-dispatcher-3] INFO 
org.apache.flink.runtime.executiongraph.ExecutionGraph - Deploying DataSink 
(DiscardingOutput) (2/2) (attempt #0) to localhost
[flink-akka.actor.default-dispatcher-4] INFO 
org.apache.flink.runtime.taskexecutor.TaskExecutor - Received task DataSink 
(DiscardingOutput) (2/2).
[flink-akka.actor.default-dispatcher-3] INFO 
org.apache.flink.runtime.executiongraph.ExecutionGraph - MapPartition 
(MapPartition at [3]assert_that/{Group, Unkey, Match}) (2/2) 
(444f7ad2e182b4d708b6f4377a536b76) switched from RUNNING to FINISHED.
[DataSink (DiscardingOutput) (2/2)] INFO 
org.apache.flink.runtime.taskmanager.Task - DataSink (DiscardingOutput) (2/2) 
(f12554c292ec2e589befc6898968ab87) switched from CREATED to DEPLOYING.
[DataSink (DiscardingOutput) (2/2)] INFO 
org.apache.flink.runtime.taskmanager.Task - Creating FileSystem stream leak 
safety net for task DataSink (DiscardingOutput) (2/2) 
(f12554c292ec2e589befc6898968ab87) [DEPLOYING]
[DataSink (DiscardingOutput) (2/2)] INFO 
org.apache.flink.runtime.taskmanager.Task - Loading JAR files for task DataSink 
(DiscardingOutput) (2/2) (f12554c292ec2e589befc6898968ab87) [DEPLOYING].
[DataSink (DiscardingOutput) (2/2)] INFO 
org.apache.flink.runtime.taskmanager.Task - Registering task at network: 
DataSink (DiscardingOutput) (2/2) (f12554c292ec2e589befc6898968ab87) 
[DEPLOYING].
[DataSink (DiscardingOutput) (2/2)] INFO 
org.apache.flink.runtime.taskmanager.Task - DataSink (DiscardingOutput) (2/2) 
(f12554c292ec2e589befc6898968ab87) switched from DEPLOYING to RUNNING.
[flink-akka.actor.default-dispatcher-7] INFO 
org.apache.flink.runtime.executiongraph.ExecutionGraph - DataSink 
(DiscardingOutput) (2/2) (f12554c292ec2e589befc6898968ab87) switched from 
DEPLOYING to RUNNING.
[DataSink (DiscardingOutput) (2/2)] INFO 
org.apache.flink.runtime.taskmanager.Task - DataSink (DiscardingOutput) (2/2) 
(f12554c292ec2e589befc6898968ab87) switched from RUNNING to FINISHED.
[DataSink (DiscardingOutput) (2/2)] INFO 
org.apache.flink.runtime.taskmanager.Task - Freeing task resources for DataSink 
(DiscardingOutput) (2/2) (f12554c292ec2e589befc6898968ab87).
[DataSink (DiscardingOutput) (2/2)] INFO 
org.apache.flink.runtime.taskmanager.Task - Ensuring all FileSystem streams are 
closed for task DataSink (DiscardingOutput) (2/2) 
(f12554c292ec2e589befc6898968ab87) [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 DataSink 
(DiscardingOutput) f12554c292ec2e589befc6898968ab87.
[flink-akka.actor.default-dispatcher-5] INFO 
org.apache.flink.runtime.executiongraph.ExecutionGraph - DataSink 
(DiscardingOutput) (2/2) (f12554c292ec2e589befc6898968ab87) switched from 
RUNNING to FINISHED.
[MapPartition (MapPartition at [3]assert_that/{Group, Unkey, Match}) (1/2)] 
INFO org.apache.flink.runtime.taskmanager.Task - MapPartition (MapPartition at 
[3]assert_that/{Group, Unkey, Match}) (1/2) (bcd28107daf38597d8ea61a60f4a80aa) 
switched from RUNNING to FINISHED.
[MapPartition (MapPartition at [3]assert_that/{Group, Unkey, Match}) (1/2)] 
INFO org.apache.flink.runtime.taskmanager.Task - Freeing task resources for 
MapPartition (MapPartition at [3]assert_that/{Group, Unkey, Match}) (1/2) 
(bcd28107daf38597d8ea61a60f4a80aa).
[MapPartition (MapPartition at [3]assert_that/{Group, Unkey, Match}) (1/2)] 
INFO org.apache.flink.runtime.taskmanager.Task - Ensuring all FileSystem 
streams are closed for task MapPartition (MapPartition at 
[3]assert_that/{Group, Unkey, Match}) (1/2) (bcd28107daf38597d8ea61a60f4a80aa) 
[FINISHED]
[jobmanager-future-thread-2] INFO 
org.apache.flink.runtime.executiongraph.ExecutionGraph - DataSink 
(DiscardingOutput) (1/2) (20cc4133fbaf37246d02097d883e2531) switched from 
CREATED to SCHEDULED.
[flink-akka.actor.default-dispatcher-7] INFO 
org.apache.flink.runtime.taskexecutor.TaskExecutor - Un-registering task and 
sending final execution state FINISHED to JobManager for task MapPartition 
(MapPartition at [3]assert_that/{Group, Unkey, Match}) 
bcd28107daf38597d8ea61a60f4a80aa.
[flink-akka.actor.default-dispatcher-7] INFO 
org.apache.flink.runtime.executiongraph.ExecutionGraph - MapPartition 
(MapPartition at [3]assert_that/{Group, Unkey, Match}) (1/2) 
(bcd28107daf38597d8ea61a60f4a80aa) switched from RUNNING to FINISHED.
[flink-akka.actor.default-dispatcher-4] INFO 
org.apache.flink.runtime.executiongraph.ExecutionGraph - DataSink 
(DiscardingOutput) (1/2) (20cc4133fbaf37246d02097d883e2531) switched from 
SCHEDULED to DEPLOYING.
[flink-akka.actor.default-dispatcher-4] INFO 
org.apache.flink.runtime.executiongraph.ExecutionGraph - Deploying DataSink 
(DiscardingOutput) (1/2) (attempt #0) to localhost
[flink-akka.actor.default-dispatcher-7] INFO 
org.apache.flink.runtime.taskexecutor.TaskExecutor - Received task DataSink 
(DiscardingOutput) (1/2).
[DataSink (DiscardingOutput) (1/2)] INFO 
org.apache.flink.runtime.taskmanager.Task - DataSink (DiscardingOutput) (1/2) 
(20cc4133fbaf37246d02097d883e2531) switched from CREATED to DEPLOYING.
[DataSink (DiscardingOutput) (1/2)] INFO 
org.apache.flink.runtime.taskmanager.Task - Creating FileSystem stream leak 
safety net for task DataSink (DiscardingOutput) (1/2) 
(20cc4133fbaf37246d02097d883e2531) [DEPLOYING]
[DataSink (DiscardingOutput) (1/2)] INFO 
org.apache.flink.runtime.taskmanager.Task - Loading JAR files for task DataSink 
(DiscardingOutput) (1/2) (20cc4133fbaf37246d02097d883e2531) [DEPLOYING].
[DataSink (DiscardingOutput) (1/2)] INFO 
org.apache.flink.runtime.taskmanager.Task - Registering task at network: 
DataSink (DiscardingOutput) (1/2) (20cc4133fbaf37246d02097d883e2531) 
[DEPLOYING].
[DataSink (DiscardingOutput) (1/2)] INFO 
org.apache.flink.runtime.taskmanager.Task - DataSink (DiscardingOutput) (1/2) 
(20cc4133fbaf37246d02097d883e2531) switched from DEPLOYING to RUNNING.
[flink-akka.actor.default-dispatcher-7] INFO 
org.apache.flink.runtime.executiongraph.ExecutionGraph - DataSink 
(DiscardingOutput) (1/2) (20cc4133fbaf37246d02097d883e2531) switched from 
DEPLOYING to RUNNING.
[DataSink (DiscardingOutput) (1/2)] INFO 
org.apache.flink.runtime.taskmanager.Task - DataSink (DiscardingOutput) (1/2) 
(20cc4133fbaf37246d02097d883e2531) switched from RUNNING to FINISHED.
[DataSink (DiscardingOutput) (1/2)] INFO 
org.apache.flink.runtime.taskmanager.Task - Freeing task resources for DataSink 
(DiscardingOutput) (1/2) (20cc4133fbaf37246d02097d883e2531).
[DataSink (DiscardingOutput) (1/2)] INFO 
org.apache.flink.runtime.taskmanager.Task - Ensuring all FileSystem streams are 
closed for task DataSink (DiscardingOutput) (1/2) 
(20cc4133fbaf37246d02097d883e2531) [FINISHED]
[flink-akka.actor.default-dispatcher-7] INFO 
org.apache.flink.runtime.taskexecutor.TaskExecutor - Un-registering task and 
sending final execution state FINISHED to JobManager for task DataSink 
(DiscardingOutput) 20cc4133fbaf37246d02097d883e2531.
[flink-akka.actor.default-dispatcher-7] INFO 
org.apache.flink.runtime.executiongraph.ExecutionGraph - DataSink 
(DiscardingOutput) (1/2) (20cc4133fbaf37246d02097d883e2531) switched from 
RUNNING to FINISHED.
[flink-akka.actor.default-dispatcher-7] INFO 
org.apache.flink.runtime.executiongraph.ExecutionGraph - Job 
BeamApp-root-0601130052-60809dc3 (b96d8e58338960c7fc0a9e37de55ede2) switched 
from state RUNNING to FINISHED.
[flink-akka.actor.default-dispatcher-4] INFO 
org.apache.flink.runtime.dispatcher.StandaloneDispatcher - Job 
b96d8e58338960c7fc0a9e37de55ede2 reached globally terminal state FINISHED.
[flink-akka.actor.default-dispatcher-7] INFO 
org.apache.flink.runtime.jobmaster.JobMaster - Stopping the JobMaster for job 
BeamApp-root-0601130052-60809dc3(b96d8e58338960c7fc0a9e37de55ede2).
[flink-runner-job-invoker] INFO 
org.apache.flink.runtime.minicluster.MiniCluster - Shutting down Flink Mini 
Cluster
[flink-akka.actor.default-dispatcher-5] INFO 
org.apache.flink.runtime.taskexecutor.TaskExecutor - Close JobManager 
connection for job b96d8e58338960c7fc0a9e37de55ede2.
[flink-runner-job-invoker] INFO 
org.apache.flink.runtime.dispatcher.DispatcherRestEndpoint - Shutting down rest 
endpoint.
[flink-akka.actor.default-dispatcher-7] INFO 
org.apache.flink.runtime.jobmaster.JobMaster - Close ResourceManager connection 
19646ec6b0d0e7aa7e10be9cac3c49b1: JobManager is shutting down..
[flink-akka.actor.default-dispatcher-3] INFO 
org.apache.flink.runtime.jobmaster.slotpool.SlotPool - Suspending SlotPool.
[flink-akka.actor.default-dispatcher-3] INFO 
org.apache.flink.runtime.jobmaster.slotpool.SlotPool - Stopping SlotPool.
[flink-akka.actor.default-dispatcher-4] INFO 
org.apache.flink.runtime.dispatcher.StandaloneDispatcher - Stopping dispatcher 
akka://flink/user/dispatcheref8955d0-97a4-4fda-be93-fbed1e06a43c.
[flink-akka.actor.default-dispatcher-4] INFO 
org.apache.flink.runtime.dispatcher.StandaloneDispatcher - Stopping all 
currently running jobs of dispatcher 
akka://flink/user/dispatcheref8955d0-97a4-4fda-be93-fbed1e06a43c.
[flink-akka.actor.default-dispatcher-5] INFO 
org.apache.flink.runtime.taskexecutor.TaskExecutor - Stopping TaskExecutor 
akka://flink/user/taskmanager_0.
[flink-akka.actor.default-dispatcher-5] INFO 
org.apache.flink.runtime.state.TaskExecutorLocalStateStoresManager - Shutting 
down TaskExecutorLocalStateStoresManager.
[flink-akka.actor.default-dispatcher-4] INFO 
org.apache.flink.runtime.resourcemanager.StandaloneResourceManager - Disconnect 
job manager b2a76e2bbf743204e2d0ae0e7d6a4789@akka://flink/user/jobmanager_1 for 
job b96d8e58338960c7fc0a9e37de55ede2 from the resource manager.
[flink-akka.actor.default-dispatcher-7] INFO 
org.apache.flink.runtime.taskexecutor.TaskExecutor - JobManager for job 
b96d8e58338960c7fc0a9e37de55ede2 with leader id 
b2a76e2bbf743204e2d0ae0e7d6a4789 lost leadership.
[flink-akka.actor.default-dispatcher-5] INFO 
org.apache.flink.runtime.io.disk.iomanager.IOManager - I/O manager removed 
spill file directory /tmp/flink-io-e99d2935-6a38-493d-a8ee-003a46421959
[flink-akka.actor.default-dispatcher-5] INFO 
org.apache.flink.runtime.io.network.NetworkEnvironment - Shutting down the 
network environment and its components.
[flink-akka.actor.default-dispatcher-7] INFO 
org.apache.flink.runtime.rest.handler.legacy.backpressure.StackTraceSampleCoordinator
 - Shutting down stack trace sample coordinator.
[flink-akka.actor.default-dispatcher-7] INFO 
org.apache.flink.runtime.dispatcher.StandaloneDispatcher - Stopped dispatcher 
akka://flink/user/dispatcheref8955d0-97a4-4fda-be93-fbed1e06a43c.
[flink-akka.actor.default-dispatcher-3] INFO 
org.apache.flink.runtime.resourcemanager.slotmanager.SlotManager - Closing the 
SlotManager.
[flink-akka.actor.default-dispatcher-3] INFO 
org.apache.flink.runtime.resourcemanager.slotmanager.SlotManager - Suspending 
the SlotManager.
[ForkJoinPool.commonPool-worker-2] INFO 
org.apache.flink.runtime.dispatcher.DispatcherRestEndpoint - Removing cache 
directory /tmp/flink-web-ui
[ForkJoinPool.commonPool-worker-2] INFO 
org.apache.flink.runtime.dispatcher.DispatcherRestEndpoint - Shut down complete.
[flink-akka.actor.default-dispatcher-5] INFO 
org.apache.flink.runtime.taskexecutor.JobLeaderService - Stop job leader 
service.
[flink-akka.actor.default-dispatcher-5] INFO 
org.apache.flink.runtime.taskexecutor.TaskExecutor - Stopped TaskExecutor 
akka://flink/user/taskmanager_0.
[flink-akka.actor.default-dispatcher-5] INFO 
org.apache.flink.runtime.rpc.akka.AkkaRpcService - Stopping Akka RPC service.
[flink-akka.actor.default-dispatcher-5] INFO 
org.apache.flink.runtime.blob.PermanentBlobCache - Shutting down BLOB cache
[flink-akka.actor.default-dispatcher-5] INFO 
org.apache.flink.runtime.blob.TransientBlobCache - Shutting down BLOB cache
[flink-akka.actor.default-dispatcher-5] INFO 
org.apache.flink.runtime.blob.BlobServer - Stopped BLOB server at 0.0.0.0:35389
[flink-akka.actor.default-dispatcher-5] INFO 
org.apache.flink.runtime.rpc.akka.AkkaRpcService - Stopped Akka RPC service.
[flink-runner-job-invoker] INFO org.apache.beam.runners.flink.FlinkRunner - 
Execution finished in 15894 msecs
[flink-runner-job-invoker] INFO org.apache.beam.runners.flink.FlinkRunner - 
Final accumulator values:
[flink-runner-job-invoker] INFO org.apache.beam.runners.flink.FlinkRunner - 
__metricscontainers : 
MetricQueryResults(Counters(ref_PCollection_PCollection_14:beam:metric:pardo_execution_time:start_bundle_msecs:v1
 {PTRANSFORM=ref_AppliedPTransform_assert_that/Group/Flatten_34}: 0, 
ref_PCollection_PCollection_27:beam:metric:pardo_execution_time:start_bundle_msecs:v1
 {PTRANSFORM=fn/read/ref_PCollection_PCollection_27:0}: 0, 
ref_PCollection_PCollection_12:beam:metric:pardo_execution_time:finish_bundle_msecs:v1
 
{PTRANSFORM=ExternalTransform(pytest:beam:transforms:count)/Combine.perKey(Count)/Precombine}:
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ref_PCollection_PCollection_9:beam:metric:pardo_execution_time:finish_bundle_msecs:v1
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 {PTRANSFORM=ref_AppliedPTransform_assert_that/WindowInto(WindowIntoFn)_29}: 0, 
ref_PCollection_PCollection_12:beam:metric:pardo_execution_time:finish_bundle_msecs:v1
 {PTRANSFORM=external_1root/ParDo(Anonymous)/ParMultiDo(Anonymous)}: 0, 
ref_PCollection_PCollection_17:beam:metric:pardo_execution_time:process_bundle_msecs:v1
 {PTRANSFORM=fn/read/ref_PCollection_PCollection_17:0}: 0, 
ref_PCollection_PCollection_12:beam:metric:pardo_execution_time:process_bundle_msecs:v1
 {PTRANSFORM=external_1root/ParDo(Anonymous)/ParMultiDo(Anonymous)}: 0, 
ref_PCollection_PCollection_12:beam:metric:pardo_execution_time:start_bundle_msecs:v1
 {PTRANSFORM=external_1root/ParDo(Anonymous)/ParMultiDo(Anonymous)}: 0, 
ref_PCollection_PCollection_9:beam:metric:pardo_execution_time:start_bundle_msecs:v1
 {PTRANSFORM=ref_AppliedPTransform_Create/Map(decode)_16}: 
0)Distributions(ref_PCollection_PCollection_14:beam:metric:sampled_byte_size:v1 
{PCOLLECTION=ref_PCollection_PCollection_16}: DistributionResult{sum=54, 
count=3, min=18, max=18}, 
ref_PCollection_PCollection_14:beam:metric:sampled_byte_size:v1 
{PCOLLECTION=ref_PCollection_PCollection_15}: DistributionResult{sum=51, 
count=3, min=17, max=17}, 
ref_PCollection_PCollection_14:beam:metric:sampled_byte_size:v1 
{PCOLLECTION=ref_PCollection_PCollection_14}: DistributionResult{sum=45, 
count=3, min=15, max=15}, 
ref_PCollection_PCollection_27:beam:metric:sampled_byte_size:v1 
{PCOLLECTION=ref_PCollection_PCollection_30}: DistributionResult{sum=14, 
count=1, min=14, max=14}, 
ref_PCollection_PCollection_17:beam:metric:sampled_byte_size:v1 
{PCOLLECTION=ref_PCollection_PCollection_24:0}: DistributionResult{sum=19, 
count=1, min=19, max=19}, 
ref_PCollection_PCollection_17:beam:metric:sampled_byte_size:v1 
{PCOLLECTION=ref_PCollection_PCollection_17}: DistributionResult{sum=13, 
count=1, min=13, max=13}, 
ref_PCollection_PCollection_14:beam:metric:sampled_byte_size:v1 
{PCOLLECTION=ref_PCollection_PCollection_24:1}: DistributionResult{sum=72, 
count=3, min=24, max=24}, 
ref_PCollection_PCollection_17:beam:metric:sampled_byte_size:v1 
{PCOLLECTION=ref_PCollection_PCollection_18}: DistributionResult{sum=16, 
count=1, min=16, max=16}, 
ref_PCollection_PCollection_17:beam:metric:sampled_byte_size:v1 
{PCOLLECTION=ref_PCollection_PCollection_19}: DistributionResult{sum=15, 
count=1, min=15, max=15}, 
ref_PCollection_PCollection_9:beam:metric:sampled_byte_size:v1 
{PCOLLECTION=ref_PCollection_PCollection_9}: DistributionResult{sum=192, 
count=12, min=16, max=16}, 
ref_PCollection_PCollection_17:beam:metric:sampled_byte_size:v1 
{PCOLLECTION=ref_PCollection_PCollection_22}: DistributionResult{sum=17, 
count=1, min=17, max=17}, 
ref_PCollection_PCollection_9:beam:metric:sampled_byte_size:v1 
{PCOLLECTION=ref_PCollection_PCollection_10}: DistributionResult{sum=168, 
count=12, min=14, max=14}, 
ref_PCollection_PCollection_9:beam:metric:sampled_byte_size:v1 
{PCOLLECTION=ref_PCollection_PCollection_12}: DistributionResult{sum=168, 
count=12, min=14, max=14}, 
ref_PCollection_PCollection_9:beam:metric:sampled_byte_size:v1 
{PCOLLECTION=ref_PCollection_PCollection_11}: DistributionResult{sum=168, 
count=12, min=14, max=14}, 
ref_PCollection_PCollection_1:beam:metric:sampled_byte_size:v1 
{PCOLLECTION=ref_PCollection_PCollection_1}: DistributionResult{sum=13, 
count=1, min=13, max=13}, 
ref_PCollection_PCollection_27:beam:metric:sampled_byte_size:v1 
{PCOLLECTION=ref_PCollection_PCollection_27}: DistributionResult{sum=58, 
count=1, min=58, max=58}, 
ref_PCollection_PCollection_27:beam:metric:sampled_byte_size:v1 
{PCOLLECTION=ref_PCollection_PCollection_28}: DistributionResult{sum=41, 
count=1, min=41, max=41}, 
ref_PCollection_PCollection_14:beam:metric:sampled_byte_size:v1 
{PCOLLECTION=ref_PCollection_PCollection_23}: DistributionResult{sum=63, 
count=3, min=21, max=21}, 
ref_PCollection_PCollection_27:beam:metric:sampled_byte_size:v1 
{PCOLLECTION=ref_PCollection_PCollection_29}: DistributionResult{sum=33, 
count=1, min=33, max=33}, 
ref_PCollection_PCollection_1:beam:metric:sampled_byte_size:v1 
{PCOLLECTION=ref_PCollection_PCollection_2}: DistributionResult{sum=180, 
count=12, min=15, max=15}, 
ref_PCollection_PCollection_14:beam:metric:sampled_byte_size:v1 
{PCOLLECTION=ref_PCollection_PCollection_21}: DistributionResult{sum=57, 
count=3, min=19, max=19}, 
ref_PCollection_PCollection_14:beam:metric:sampled_byte_size:v1 
{PCOLLECTION=ref_PCollection_PCollection_20}: DistributionResult{sum=54, 
count=3, min=18, max=18}))
[flink-runner-job-invoker] INFO 
org.apache.beam.runners.fnexecution.artifact.BeamFileSystemArtifactRetrievalService
 - Manifest at 
/tmp/beam-artifact-staging/job_6975dd03-6efb-41cc-9756-fe0341e920e7/MANIFEST 
has 0 artifact locations
[flink-runner-job-invoker] INFO 
org.apache.beam.runners.fnexecution.artifact.BeamFileSystemArtifactStagingService
 - Removed dir 
/tmp/beam-artifact-staging/job_6975dd03-6efb-41cc-9756-fe0341e920e7/

> Task :sdks:python:crossLanguageTests

FAILURE: Build failed with an exception.

* Where:
Build file 
'<https://builds.apache.org/job/beam_PostCommit_Python_Verify/ws/src/sdks/python/build.gradle'>
 line: 212

* What went wrong:
Execution failed for task ':sdks:python:postCommitIT'.
> Process 'command 'sh'' 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 1h 0m 56s
104 actionable tasks: 80 executed, 21 from cache, 3 up-to-date

Publishing build scan...
https://gradle.com/s/7kga3x4ttjp4q

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

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