See 
<https://builds.apache.org/job/beam_PostCommit_Python2/1844/display/redirect?page=changes>

Changes:

[chadrik] more typing fixes

[chadrik] Fix typing issue with python 3.5.2

[chadrik] fixes

[chadrik] Address more issues discovered after rebase

[chadrik] Improve the idiom used for conditional imports

[chadrik] Fix more issues

[chadrik] Update to latest mypy version

[github] [BEAM-8487] Handle nested forward references (#10932)


------------------------------------------
[...truncated 10.45 MB...]
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INFO:apache_beam.runners.dataflow.internal.apiclient:Create job: <Job
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INFO:apache_beam.runners.dataflow.internal.apiclient:Created job with id: 
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INFO:apache_beam.runners.dataflow.internal.apiclient:To access the Dataflow 
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INFO:apache_beam.runners.dataflow.dataflow_runner:Job 
2020-02-28_16_00_44-5017014031878956738 is in state JOB_STATE_RUNNING
INFO:apache_beam.runners.dataflow.dataflow_runner:2020-02-29T00:00:44.420Z: 
JOB_MESSAGE_DETAILED: Autoscaling was automatically enabled for job 
2020-02-28_16_00_44-5017014031878956738.
INFO:apache_beam.runners.dataflow.dataflow_runner:2020-02-29T00:00:44.420Z: 
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INFO:apache_beam.runners.dataflow.dataflow_runner:2020-02-29T00:00:48.231Z: 
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INFO:apache_beam.runners.dataflow.dataflow_runner:2020-02-29T00:00:49.823Z: 
JOB_MESSAGE_BASIC: Worker configuration: n1-standard-1 in us-central1-a.
INFO:apache_beam.runners.dataflow.dataflow_runner:2020-02-29T00:00:50.419Z: 
JOB_MESSAGE_DETAILED: Expanding CoGroupByKey operations into optimizable parts.
INFO:apache_beam.runners.dataflow.dataflow_runner:2020-02-29T00:00:50.460Z: 
JOB_MESSAGE_DEBUG: Combiner lifting skipped for step 
assert_that/Group/GroupByKey: GroupByKey not followed by a combiner.
INFO:apache_beam.runners.dataflow.dataflow_runner:2020-02-29T00:00:50.533Z: 
JOB_MESSAGE_DEBUG: Combiner lifting skipped for step read from 
datastore/GroupByKey: GroupByKey not followed by a combiner.
INFO:apache_beam.runners.dataflow.dataflow_runner:2020-02-29T00:00:50.587Z: 
JOB_MESSAGE_DETAILED: Expanding GroupByKey operations into optimizable parts.
INFO:apache_beam.runners.dataflow.dataflow_runner:2020-02-29T00:00:50.620Z: 
JOB_MESSAGE_DETAILED: Lifting ValueCombiningMappingFns into 
MergeBucketsMappingFns
INFO:apache_beam.runners.dataflow.dataflow_runner:2020-02-29T00:00:50.770Z: 
JOB_MESSAGE_DEBUG: Annotating graph with Autotuner information.
INFO:apache_beam.runners.dataflow.dataflow_runner:2020-02-29T00:00:50.827Z: 
JOB_MESSAGE_DETAILED: Fusing adjacent ParDo, Read, Write, and Flatten operations
INFO:apache_beam.runners.dataflow.dataflow_runner:2020-02-29T00:00:50.867Z: 
JOB_MESSAGE_DETAILED: Fusing consumer read from datastore/SplitQuery into read 
from datastore/UserQuery/Read
INFO:apache_beam.runners.dataflow.dataflow_runner:2020-02-29T00:00:50.912Z: 
JOB_MESSAGE_DETAILED: Fusing consumer read from datastore/GroupByKey/Reify into 
read from datastore/SplitQuery
INFO:apache_beam.runners.dataflow.dataflow_runner:2020-02-29T00:00:50.950Z: 
JOB_MESSAGE_DETAILED: Fusing consumer read from datastore/GroupByKey/Write into 
read from datastore/GroupByKey/Reify
INFO:apache_beam.runners.dataflow.dataflow_runner:2020-02-29T00:00:50.993Z: 
JOB_MESSAGE_DETAILED: Fusing consumer read from 
datastore/GroupByKey/GroupByWindow into read from datastore/GroupByKey/Read
INFO:apache_beam.runners.dataflow.dataflow_runner:2020-02-29T00:00:51.016Z: 
JOB_MESSAGE_DETAILED: Fusing consumer read from datastore/Values into read from 
datastore/GroupByKey/GroupByWindow
INFO:apache_beam.runners.dataflow.dataflow_runner:2020-02-29T00:00:51.056Z: 
JOB_MESSAGE_DETAILED: Fusing consumer read from datastore/Flatten into read 
from datastore/Values
INFO:apache_beam.runners.dataflow.dataflow_runner:2020-02-29T00:00:51.093Z: 
JOB_MESSAGE_DETAILED: Fusing consumer read from datastore/Read into read from 
datastore/Flatten
INFO:apache_beam.runners.dataflow.dataflow_runner:2020-02-29T00:00:51.144Z: 
JOB_MESSAGE_DETAILED: Fusing consumer 
Globally/CombineGlobally(CountCombineFn)/KeyWithVoid into read from 
datastore/Read
INFO:apache_beam.runners.dataflow.dataflow_runner:2020-02-29T00:00:51.179Z: 
JOB_MESSAGE_DETAILED: Fusing consumer 
Globally/CombineGlobally(CountCombineFn)/CombinePerKey/GroupByKey+Globally/CombineGlobally(CountCombineFn)/CombinePerKey/Combine/Partial
 into Globally/CombineGlobally(CountCombineFn)/KeyWithVoid
INFO:apache_beam.runners.dataflow.dataflow_runner:2020-02-29T00:00:51.218Z: 
JOB_MESSAGE_DETAILED: Fusing consumer 
Globally/CombineGlobally(CountCombineFn)/CombinePerKey/GroupByKey/Reify into 
Globally/CombineGlobally(CountCombineFn)/CombinePerKey/GroupByKey+Globally/CombineGlobally(CountCombineFn)/CombinePerKey/Combine/Partial
INFO:apache_beam.runners.dataflow.dataflow_runner:2020-02-29T00:00:51.254Z: 
JOB_MESSAGE_DETAILED: Fusing consumer 
Globally/CombineGlobally(CountCombineFn)/CombinePerKey/GroupByKey/Write into 
Globally/CombineGlobally(CountCombineFn)/CombinePerKey/GroupByKey/Reify
INFO:apache_beam.runners.dataflow.dataflow_runner:2020-02-29T00:00:51.292Z: 
JOB_MESSAGE_DETAILED: Fusing consumer 
Globally/CombineGlobally(CountCombineFn)/CombinePerKey/Combine into 
Globally/CombineGlobally(CountCombineFn)/CombinePerKey/GroupByKey/Read
INFO:apache_beam.runners.dataflow.dataflow_runner:2020-02-29T00:00:51.325Z: 
JOB_MESSAGE_DETAILED: Fusing consumer 
Globally/CombineGlobally(CountCombineFn)/CombinePerKey/Combine/Extract into 
Globally/CombineGlobally(CountCombineFn)/CombinePerKey/Combine
INFO:apache_beam.runners.dataflow.dataflow_runner:2020-02-29T00:00:51.361Z: 
JOB_MESSAGE_DETAILED: Fusing consumer 
Globally/CombineGlobally(CountCombineFn)/UnKey into 
Globally/CombineGlobally(CountCombineFn)/CombinePerKey/Combine/Extract
INFO:apache_beam.runners.dataflow.dataflow_runner:2020-02-29T00:00:51.401Z: 
JOB_MESSAGE_DETAILED: Unzipping flatten s19 for input s17.None
INFO:apache_beam.runners.dataflow.dataflow_runner:2020-02-29T00:00:51.442Z: 
JOB_MESSAGE_DETAILED: Fusing unzipped copy of 
assert_that/Group/GroupByKey/Reify, through flatten assert_that/Group/Flatten, 
into producer assert_that/Group/pair_with_0
INFO:apache_beam.runners.dataflow.dataflow_runner:2020-02-29T00:00:51.480Z: 
JOB_MESSAGE_DETAILED: Fusing consumer 
assert_that/Group/GroupByKey/GroupByWindow into 
assert_that/Group/GroupByKey/Read
INFO:apache_beam.runners.dataflow.dataflow_runner:2020-02-29T00:00:51.513Z: 
JOB_MESSAGE_DETAILED: Fusing consumer 
assert_that/Group/Map(_merge_tagged_vals_under_key) into 
assert_that/Group/GroupByKey/GroupByWindow
INFO:apache_beam.runners.dataflow.dataflow_runner:2020-02-29T00:00:51.548Z: 
JOB_MESSAGE_DETAILED: Fusing consumer assert_that/Unkey into 
assert_that/Group/Map(_merge_tagged_vals_under_key)
INFO:apache_beam.runners.dataflow.dataflow_runner:2020-02-29T00:00:51.584Z: 
JOB_MESSAGE_DETAILED: Fusing consumer assert_that/Match into assert_that/Unkey
INFO:apache_beam.runners.dataflow.dataflow_runner:2020-02-29T00:00:51.618Z: 
JOB_MESSAGE_DETAILED: Unzipping flatten s19-u40 for input s20-reify-value9-c38
INFO:apache_beam.runners.dataflow.dataflow_runner:2020-02-29T00:00:51.656Z: 
JOB_MESSAGE_DETAILED: Fusing unzipped copy of 
assert_that/Group/GroupByKey/Write, through flatten 
assert_that/Group/Flatten/Unzipped-1, into producer 
assert_that/Group/GroupByKey/Reify
INFO:apache_beam.runners.dataflow.dataflow_runner:2020-02-29T00:00:51.693Z: 
JOB_MESSAGE_DETAILED: Fusing consumer assert_that/Group/pair_with_0 into 
assert_that/Create/Read
INFO:apache_beam.runners.dataflow.dataflow_runner:2020-02-29T00:00:51.729Z: 
JOB_MESSAGE_DETAILED: Fusing consumer assert_that/Group/GroupByKey/Reify into 
assert_that/Group/pair_with_1
INFO:apache_beam.runners.dataflow.dataflow_runner:2020-02-29T00:00:51.766Z: 
JOB_MESSAGE_DETAILED: Fusing consumer assert_that/Group/GroupByKey/Write into 
assert_that/Group/GroupByKey/Reify
INFO:apache_beam.runners.dataflow.dataflow_runner:2020-02-29T00:00:51.800Z: 
JOB_MESSAGE_DETAILED: Fusing consumer 
Globally/CombineGlobally(CountCombineFn)/InjectDefault/InjectDefault into 
Globally/CombineGlobally(CountCombineFn)/DoOnce/Read
INFO:apache_beam.runners.dataflow.dataflow_runner:2020-02-29T00:00:51.830Z: 
JOB_MESSAGE_DETAILED: Fusing consumer assert_that/WindowInto(WindowIntoFn) into 
Globally/CombineGlobally(CountCombineFn)/InjectDefault/InjectDefault
INFO:apache_beam.runners.dataflow.dataflow_runner:2020-02-29T00:00:51.863Z: 
JOB_MESSAGE_DETAILED: Fusing consumer assert_that/ToVoidKey into 
assert_that/WindowInto(WindowIntoFn)
INFO:apache_beam.runners.dataflow.dataflow_runner:2020-02-29T00:00:51.898Z: 
JOB_MESSAGE_DETAILED: Fusing consumer assert_that/Group/pair_with_1 into 
assert_that/ToVoidKey
INFO:apache_beam.runners.dataflow.dataflow_runner:2020-02-29T00:00:51.933Z: 
JOB_MESSAGE_DEBUG: Workflow config is missing a default resource spec.
INFO:apache_beam.runners.dataflow.dataflow_runner:2020-02-29T00:00:51.974Z: 
JOB_MESSAGE_DEBUG: Adding StepResource setup and teardown to workflow graph.
INFO:apache_beam.runners.dataflow.dataflow_runner:2020-02-29T00:00:52.012Z: 
JOB_MESSAGE_DEBUG: Adding workflow start and stop steps.
INFO:apache_beam.runners.dataflow.dataflow_runner:2020-02-29T00:00:52.050Z: 
JOB_MESSAGE_DEBUG: Assigning stage ids.
INFO:apache_beam.runners.dataflow.dataflow_runner:2020-02-29T00:00:52.215Z: 
JOB_MESSAGE_DEBUG: Executing wait step start51
INFO:apache_beam.runners.dataflow.dataflow_runner:2020-02-29T00:00:52.345Z: 
JOB_MESSAGE_BASIC: Executing operation assert_that/Group/GroupByKey/Create
INFO:apache_beam.runners.dataflow.dataflow_runner:2020-02-29T00:00:52.379Z: 
JOB_MESSAGE_BASIC: Executing operation read from datastore/GroupByKey/Create
INFO:apache_beam.runners.dataflow.dataflow_runner:2020-02-29T00:00:52.390Z: 
JOB_MESSAGE_DEBUG: Starting worker pool setup.
INFO:apache_beam.runners.dataflow.dataflow_runner:2020-02-29T00:00:52.410Z: 
JOB_MESSAGE_BASIC: Executing operation 
Globally/CombineGlobally(CountCombineFn)/CombinePerKey/GroupByKey/Create
INFO:apache_beam.runners.dataflow.dataflow_runner:2020-02-29T00:00:52.432Z: 
JOB_MESSAGE_BASIC: Starting 1 workers in us-central1-a...
INFO:apache_beam.runners.dataflow.dataflow_runner:2020-02-29T00:00:52.481Z: 
JOB_MESSAGE_BASIC: Finished operation assert_that/Group/GroupByKey/Create
INFO:apache_beam.runners.dataflow.dataflow_runner:2020-02-29T00:00:52.494Z: 
JOB_MESSAGE_BASIC: Finished operation read from datastore/GroupByKey/Create
INFO:apache_beam.runners.dataflow.dataflow_runner:2020-02-29T00:00:52.494Z: 
JOB_MESSAGE_BASIC: Finished operation 
Globally/CombineGlobally(CountCombineFn)/CombinePerKey/GroupByKey/Create
INFO:apache_beam.runners.dataflow.dataflow_runner:2020-02-29T00:00:52.543Z: 
JOB_MESSAGE_DEBUG: Value "assert_that/Group/GroupByKey/Session" materialized.
INFO:apache_beam.runners.dataflow.dataflow_runner:2020-02-29T00:00:52.578Z: 
JOB_MESSAGE_DEBUG: Value 
"Globally/CombineGlobally(CountCombineFn)/CombinePerKey/GroupByKey/Session" 
materialized.
INFO:apache_beam.runners.dataflow.dataflow_runner:2020-02-29T00:00:52.618Z: 
JOB_MESSAGE_DEBUG: Value "read from datastore/GroupByKey/Session" materialized.
INFO:apache_beam.runners.dataflow.dataflow_runner:2020-02-29T00:00:52.656Z: 
JOB_MESSAGE_BASIC: Executing operation 
assert_that/Create/Read+assert_that/Group/pair_with_0+assert_that/Group/GroupByKey/Reify+assert_that/Group/GroupByKey/Write
INFO:apache_beam.runners.dataflow.dataflow_runner:2020-02-29T00:00:52.694Z: 
JOB_MESSAGE_BASIC: Executing operation read from datastore/UserQuery/Read+read 
from datastore/SplitQuery+read from datastore/GroupByKey/Reify+read from 
datastore/GroupByKey/Write
INFO:apache_beam.runners.dataflow.dataflow_runner:2020-02-29T00:01:16.006Z: 
JOB_MESSAGE_DETAILED: Autoscaling: Raised the number of workers to 1 based on 
the rate of progress in the currently running step(s).
INFO:apache_beam.runners.dataflow.dataflow_runner:2020-02-29T00:01:16.962Z: 
JOB_MESSAGE_WARNING: Your project already contains 100 Dataflow-created metric 
descriptors and Stackdriver will not create new Dataflow custom metrics for 
this job. Each unique user-defined metric name (independent of the DoFn in 
which it is defined) produces a new metric descriptor. To delete old / unused 
metric descriptors see 
https://developers.google.com/apis-explorer/#p/monitoring/v3/monitoring.projects.metricDescriptors.list
 and 
https://developers.google.com/apis-explorer/#p/monitoring/v3/monitoring.projects.metricDescriptors.delete
INFO:apache_beam.runners.dataflow.dataflow_runner:2020-02-29T00:02:16.478Z: 
JOB_MESSAGE_DETAILED: Workers have started successfully.
INFO:apache_beam.runners.dataflow.dataflow_runner:2020-02-29T00:02:16.512Z: 
JOB_MESSAGE_DETAILED: Workers have started successfully.
INFO:apache_beam.runners.dataflow.dataflow_runner:2020-02-29T00:05:10.084Z: 
JOB_MESSAGE_BASIC: Finished operation read from datastore/UserQuery/Read+read 
from datastore/SplitQuery+read from datastore/GroupByKey/Reify+read from 
datastore/GroupByKey/Write
INFO:apache_beam.runners.dataflow.dataflow_runner:2020-02-29T00:05:10.158Z: 
JOB_MESSAGE_BASIC: Executing operation read from datastore/GroupByKey/Close
INFO:apache_beam.runners.dataflow.dataflow_runner:2020-02-29T00:05:10.223Z: 
JOB_MESSAGE_BASIC: Finished operation read from datastore/GroupByKey/Close
INFO:apache_beam.runners.dataflow.dataflow_runner:2020-02-29T00:05:10.304Z: 
JOB_MESSAGE_BASIC: Executing operation read from datastore/GroupByKey/Read+read 
from datastore/GroupByKey/GroupByWindow+read from datastore/Values+read from 
datastore/Flatten+read from 
datastore/Read+Globally/CombineGlobally(CountCombineFn)/KeyWithVoid+Globally/CombineGlobally(CountCombineFn)/CombinePerKey/GroupByKey+Globally/CombineGlobally(CountCombineFn)/CombinePerKey/Combine/Partial+Globally/CombineGlobally(CountCombineFn)/CombinePerKey/GroupByKey/Reify+Globally/CombineGlobally(CountCombineFn)/CombinePerKey/GroupByKey/Write
INFO:apache_beam.runners.dataflow.dataflow_runner:2020-02-29T00:05:16.661Z: 
JOB_MESSAGE_BASIC: Finished operation 
assert_that/Create/Read+assert_that/Group/pair_with_0+assert_that/Group/GroupByKey/Reify+assert_that/Group/GroupByKey/Write
INFO:apache_beam.runners.dataflow.dataflow_runner:2020-02-29T00:05:23.102Z: 
JOB_MESSAGE_BASIC: Finished operation read from datastore/GroupByKey/Read+read 
from datastore/GroupByKey/GroupByWindow+read from datastore/Values+read from 
datastore/Flatten+read from 
datastore/Read+Globally/CombineGlobally(CountCombineFn)/KeyWithVoid+Globally/CombineGlobally(CountCombineFn)/CombinePerKey/GroupByKey+Globally/CombineGlobally(CountCombineFn)/CombinePerKey/Combine/Partial+Globally/CombineGlobally(CountCombineFn)/CombinePerKey/GroupByKey/Reify+Globally/CombineGlobally(CountCombineFn)/CombinePerKey/GroupByKey/Write
INFO:apache_beam.runners.dataflow.dataflow_runner:2020-02-29T00:05:23.172Z: 
JOB_MESSAGE_BASIC: Executing operation 
Globally/CombineGlobally(CountCombineFn)/CombinePerKey/GroupByKey/Close
INFO:apache_beam.runners.dataflow.dataflow_runner:2020-02-29T00:05:23.231Z: 
JOB_MESSAGE_BASIC: Finished operation 
Globally/CombineGlobally(CountCombineFn)/CombinePerKey/GroupByKey/Close
INFO:apache_beam.runners.dataflow.dataflow_runner:2020-02-29T00:05:23.305Z: 
JOB_MESSAGE_BASIC: Executing operation 
Globally/CombineGlobally(CountCombineFn)/CombinePerKey/GroupByKey/Read+Globally/CombineGlobally(CountCombineFn)/CombinePerKey/Combine+Globally/CombineGlobally(CountCombineFn)/CombinePerKey/Combine/Extract+Globally/CombineGlobally(CountCombineFn)/UnKey
INFO:apache_beam.runners.dataflow.dataflow_runner:2020-02-29T00:05:28.697Z: 
JOB_MESSAGE_BASIC: Finished operation 
Globally/CombineGlobally(CountCombineFn)/CombinePerKey/GroupByKey/Read+Globally/CombineGlobally(CountCombineFn)/CombinePerKey/Combine+Globally/CombineGlobally(CountCombineFn)/CombinePerKey/Combine/Extract+Globally/CombineGlobally(CountCombineFn)/UnKey
INFO:apache_beam.runners.dataflow.dataflow_runner:2020-02-29T00:05:28.772Z: 
JOB_MESSAGE_DEBUG: Value "Globally/CombineGlobally(CountCombineFn)/UnKey.out" 
materialized.
INFO:apache_beam.runners.dataflow.dataflow_runner:2020-02-29T00:05:28.858Z: 
JOB_MESSAGE_BASIC: Executing operation 
Globally/CombineGlobally(CountCombineFn)/InjectDefault/_UnpickledSideInput(UnKey.out.0)
INFO:apache_beam.runners.dataflow.dataflow_runner:2020-02-29T00:05:28.908Z: 
JOB_MESSAGE_BASIC: Finished operation 
Globally/CombineGlobally(CountCombineFn)/InjectDefault/_UnpickledSideInput(UnKey.out.0)
INFO:apache_beam.runners.dataflow.dataflow_runner:2020-02-29T00:05:28.987Z: 
JOB_MESSAGE_DEBUG: Value 
"Globally/CombineGlobally(CountCombineFn)/InjectDefault/_UnpickledSideInput(UnKey.out.0).output"
 materialized.
INFO:apache_beam.runners.dataflow.dataflow_runner:2020-02-29T00:05:29.065Z: 
JOB_MESSAGE_BASIC: Executing operation 
Globally/CombineGlobally(CountCombineFn)/DoOnce/Read+Globally/CombineGlobally(CountCombineFn)/InjectDefault/InjectDefault+assert_that/WindowInto(WindowIntoFn)+assert_that/ToVoidKey+assert_that/Group/pair_with_1+assert_that/Group/GroupByKey/Reify+assert_that/Group/GroupByKey/Write
INFO:apache_beam.runners.dataflow.dataflow_runner:2020-02-29T00:05:33.612Z: 
JOB_MESSAGE_BASIC: Finished operation 
Globally/CombineGlobally(CountCombineFn)/DoOnce/Read+Globally/CombineGlobally(CountCombineFn)/InjectDefault/InjectDefault+assert_that/WindowInto(WindowIntoFn)+assert_that/ToVoidKey+assert_that/Group/pair_with_1+assert_that/Group/GroupByKey/Reify+assert_that/Group/GroupByKey/Write
INFO:apache_beam.runners.dataflow.dataflow_runner:2020-02-29T00:05:33.705Z: 
JOB_MESSAGE_BASIC: Executing operation assert_that/Group/GroupByKey/Close
INFO:apache_beam.runners.dataflow.dataflow_runner:2020-02-29T00:05:33.751Z: 
JOB_MESSAGE_BASIC: Finished operation assert_that/Group/GroupByKey/Close
INFO:apache_beam.runners.dataflow.dataflow_runner:2020-02-29T00:05:33.830Z: 
JOB_MESSAGE_BASIC: Executing operation 
assert_that/Group/GroupByKey/Read+assert_that/Group/GroupByKey/GroupByWindow+assert_that/Group/Map(_merge_tagged_vals_under_key)+assert_that/Unkey+assert_that/Match
INFO:apache_beam.runners.dataflow.dataflow_runner:2020-02-29T00:05:43.296Z: 
JOB_MESSAGE_BASIC: Finished operation 
assert_that/Group/GroupByKey/Read+assert_that/Group/GroupByKey/GroupByWindow+assert_that/Group/Map(_merge_tagged_vals_under_key)+assert_that/Unkey+assert_that/Match
INFO:apache_beam.runners.dataflow.dataflow_runner:2020-02-29T00:05:43.370Z: 
JOB_MESSAGE_DEBUG: Executing success step success49
INFO:apache_beam.runners.dataflow.dataflow_runner:2020-02-29T00:05:43.500Z: 
JOB_MESSAGE_DETAILED: Cleaning up.
INFO:apache_beam.runners.dataflow.dataflow_runner:2020-02-29T00:05:43.557Z: 
JOB_MESSAGE_DEBUG: Starting worker pool teardown.
INFO:apache_beam.runners.dataflow.dataflow_runner:2020-02-29T00:05:43.597Z: 
JOB_MESSAGE_BASIC: Stopping worker pool...
INFO:apache_beam.runners.dataflow.dataflow_runner:2020-02-29T00:06:56.846Z: 
JOB_MESSAGE_DETAILED: Autoscaling: Resized worker pool from 1 to 0.
INFO:apache_beam.runners.dataflow.dataflow_runner:2020-02-29T00:06:56.895Z: 
JOB_MESSAGE_BASIC: Worker pool stopped.
INFO:apache_beam.runners.dataflow.dataflow_runner:2020-02-29T00:06:56.933Z: 
JOB_MESSAGE_DEBUG: Tearing down pending resources...
INFO:apache_beam.runners.dataflow.dataflow_runner:Job 
2020-02-28_16_00_44-5017014031878956738 is in state JOB_STATE_DONE
test_datastore_write_limit 
(apache_beam.io.gcp.datastore_write_it_test.DatastoreWriteIT) ... ok

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XML: nosetests-postCommitIT-df.xml
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XML: 
<https://builds.apache.org/job/beam_PostCommit_Python2/ws/src/sdks/python/nosetests.xml>
----------------------------------------------------------------------
Ran 55 tests in 3594.219s

OK (SKIP=7)
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FAILURE: Build failed with an exception.

* Where:
Build file 
'<https://builds.apache.org/job/beam_PostCommit_Python2/ws/src/sdks/python/test-suites/portable/py2/build.gradle'>
 line: 143

* What went wrong:
Execution failed for task 
':sdks:python:test-suites:portable:py2:crossLanguagePortableWordCount'.
> 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 2m 57s
124 actionable tasks: 99 executed, 22 from cache, 3 up-to-date

Publishing build scan...
https://gradle.com/s/hzaja57d6v23s

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

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