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  1. Spark
  2. SPARK-12874

ML StringIndexer does not protect itself from column name duplication

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    Details

    • Type: Bug
    • Status: Resolved
    • Priority: Major
    • Resolution: Fixed
    • Affects Version/s: 1.5.2, 1.6.0
    • Fix Version/s: 1.6.1, 2.0.0
    • Component/s: ML
    • Labels:
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      Description

      StringIndexerModel, when performing transform() does not check the schema of the input DataFrame. Because of that, it is possible to create a DataFrame containing columns with duplicated names.

      This issue is similar to SPARK-12711. StringIndexer could make use of transformSchema to assure that the input DataFrame schema is correct in sense of the parameters' values.

      Please confirm. Then, I'll prepare a PR to resolve the bug.

      https://github.com/apache/spark/blob/master/mllib/src/main/scala/org/apache/spark/ml/feature/StringIndexer.scala#L147

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            • Assignee:
              yuu.ishikawa@gmail.com Yu Ishikawa
              Reporter:
              wjur Wojciech Jurczyk
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                Updated:
                Resolved: