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https://issues.apache.org/jira/browse/BEAM-3126?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16337985#comment-16337985
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ASF GitHub Bot commented on BEAM-3126:
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robertwb closed pull request #4463: [BEAM-3126] Adding a new Flatten test to
Python SDK.
URL: https://github.com/apache/beam/pull/4463
This is a PR merged from a forked repository.
As GitHub hides the original diff on merge, it is displayed below for
the sake of provenance:
As this is a foreign pull request (from a fork), the diff is supplied
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diff --git a/sdks/python/apache_beam/transforms/ptransform_test.py
b/sdks/python/apache_beam/transforms/ptransform_test.py
index fb20d8c4e9b..09ac72b36e1 100644
--- a/sdks/python/apache_beam/transforms/ptransform_test.py
+++ b/sdks/python/apache_beam/transforms/ptransform_test.py
@@ -535,6 +535,24 @@ def
test_flatten_input_type_must_be_iterable_of_pcolls(self):
with self.assertRaises(TypeError):
set([1, 2, 3]) | beam.Flatten()
+ @attr('ValidatesRunner')
+ def test_flatten_multiple_pcollections_having_multiple_consumers(self):
+ pipeline = TestPipeline()
+ input = pipeline | 'Start' >> beam.Create(['AA', 'BBB', 'CC'])
+
+ def split_even_odd(element):
+ tag = 'even_length' if len(element) % 2 == 0 else 'odd_length'
+ return pvalue.TaggedOutput(tag, element)
+
+ even_length, odd_length = (input | beam.Map(split_even_odd)
+ .with_outputs('even_length', 'odd_length'))
+ merged = (even_length, odd_length) | 'Flatten' >> beam.Flatten()
+
+ assert_that(merged, equal_to(['AA', 'BBB', 'CC']))
+ assert_that(even_length, equal_to(['AA', 'CC']), label='assert:even')
+ assert_that(odd_length, equal_to(['BBB']), label='assert:odd')
+ pipeline.run()
+
def test_co_group_by_key_on_list(self):
pipeline = TestPipeline()
pcoll_1 = pipeline | 'Start 1' >> beam.Create(
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> Portable flattens in Python SDK Harness
> ---------------------------------------
>
> Key: BEAM-3126
> URL: https://issues.apache.org/jira/browse/BEAM-3126
> Project: Beam
> Issue Type: Sub-task
> Components: sdk-py-harness
> Reporter: Daniel Oliveira
> Assignee: Daniel Oliveira
> Priority: Major
> Labels: portability
>
> Get flattens working for portability in Python SDK Harness.
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