[GitHub] [spark] fan31415 commented on a change in pull request #28487: [SPARK-31671][ML] Wrong error message in VectorAssembler

[GitBox <gi...@apache.org>]

fan31415 commented on a change in pull request #28487:
URL: https://github.com/apache/spark/pull/28487#discussion_r422612573



##########
File path: mllib/src/test/scala/org/apache/spark/ml/feature/VectorAssemblerSuite.scala
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@@ -261,4 +261,14 @@ class VectorAssemblerSuite
     val output = vectorAssembler.transform(dfWithNullsAndNaNs)
     assert(output.select("a").limit(1).collect().head == Row(Vectors.sparse(0, Seq.empty)))
   }
+  test("SPARK-31671: should give explicit error message when can not infer column lengths") {

Review comment:
       OK done




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