Feynman Liang created SPARK-12779:
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Summary: StringIndexer should handle null
Key: SPARK-12779
URL: https://issues.apache.org/jira/browse/SPARK-12779
Project: Spark
Issue Type: Bug
Components: ML
Affects Versions: 1.6.0
Reporter: Feynman Liang
StringIndexer currently fails with a {{NullPointerException}} when indexing a
column containing {{null}}s. It should instead index all {{null}}s into some
sentinel value (say -1).
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