GitHub user tgroh opened a pull request:
https://github.com/apache/beam/pull/2120
[BEAM-1571] Add a test for FlattenPCollectionList on a singleton list
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This test validates that the output PCollection of a Flatten with a
single input PCollection contains the contents of the input PCollection.
You can merge this pull request into a Git repository by running:
$ git pull https://github.com/tgroh/beam flatten_singleton_test
Alternatively you can review and apply these changes as the patch at:
https://github.com/apache/beam/pull/2120.patch
To close this pull request, make a commit to your master/trunk branch
with (at least) the following in the commit message:
This closes #2120
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