Github user jkbradley commented on a diff in the pull request:
https://github.com/apache/spark/pull/11683#discussion_r56098441
--- Diff: python/pyspark/ml/pipeline.py ---
@@ -146,6 +125,57 @@ class Pipeline(Estimator):
pipeline stages. If there are no stages, the pipeline acts as an
identity transformer.
+ >>> from pyspark.ml.feature import HashingTF
--- End diff --
A unit test this long should go in tests.py, not in a doctest. It'd be
nice to have a very short, simple doc test as well though.
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