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Posted to issues@spark.apache.org by "zhengruifeng (JIRA)" <ji...@apache.org> on 2019/06/04 11:30:00 UTC

[jira] [Created] (SPARK-27944) Unify the behavior of checking empty output column names

zhengruifeng created SPARK-27944:
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             Summary: Unify the behavior of checking empty output column names
                 Key: SPARK-27944
                 URL: https://issues.apache.org/jira/browse/SPARK-27944
             Project: Spark
          Issue Type: Improvement
          Components: ML
    Affects Versions: 3.0.0
            Reporter: zhengruifeng


In some algs (LDA, DT, GBTC, SVC, LR, MLP, NB), the transform method will check whether an output column name is empty, and if all names are empty, it will log a warning msg and do nothing.

 

It maybe better to make other algs (regression, ovr, clustering, als) also check the output columns before transformation.



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