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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