Github user cloud-fan commented on a diff in the pull request: https://github.com/apache/spark/pull/22373#discussion_r216323311 --- Diff: mllib/src/test/scala/org/apache/spark/ml/feature/VectorAssemblerSuite.scala --- @@ -256,4 +256,9 @@ class VectorAssemblerSuite assert(runWithMetadata("keep", additional_filter = "id1 > 2").count() == 4) } + test("SPARK-25371: VectorAssembler with empty inputCols") { --- End diff -- Do we still need this test?
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