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Posted to issues@spark.apache.org by "Joseph K. Bradley (JIRA)" <ji...@apache.org> on 2015/04/15 01:02:59 UTC

[jira] [Created] (SPARK-6916) StringIndexer should preserve non-ML metadata

Joseph K. Bradley created SPARK-6916:
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             Summary: StringIndexer should preserve non-ML metadata
                 Key: SPARK-6916
                 URL: https://issues.apache.org/jira/browse/SPARK-6916
             Project: Spark
          Issue Type: Improvement
          Components: ML
    Affects Versions: 1.4.0
            Reporter: Joseph K. Bradley
            Priority: Minor


StringIndexer sets the output column metadata to hold the ML-specific metadata created after indexing the column.  It does not carry over non-ML metadata from the input column.  I figure it should.  (That's the behavior I used for VectorIndexer.)

Ping [~mengxr]



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