Github user BryanCutler commented on a diff in the pull request:
https://github.com/apache/spark/pull/20285#discussion_r162144930
--- Diff: examples/src/main/python/ml/vector_size_hint_example.py ---
@@ -0,0 +1,57 @@
+#
+# Licensed to the Apache Software Foundation (ASF) under one or more
+# contributor license agreements. See the NOTICE file distributed with
+# this work for additional information regarding copyright ownership.
+# The ASF licenses this file to You under the Apache License, Version 2.0
+# (the "License"); you may not use this file except in compliance with
+# the License. You may obtain a copy of the License at
+#
+# http://www.apache.org/licenses/LICENSE-2.0
+#
+# Unless required by applicable law or agreed to in writing, software
+# distributed under the License is distributed on an "AS IS" BASIS,
+# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+# See the License for the specific language governing permissions and
+# limitations under the License.
+#
+
+from __future__ import print_function
+
+# $example on$
+from pyspark.ml.linalg import Vectors
+from pyspark.ml.feature import (VectorSizeHint, VectorAssembler)
+# $example off$
+from pyspark.sql import SparkSession
+
+if __name__ == "__main__":
+ spark = SparkSession\
+ .builder\
+ .appName("VectorAssemblerExample")\
--- End diff --
should be "VectorSizeHintExample" - same with other apis
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