zhengruifeng created SPARK-20932:
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Summary: CountVectorizer support handle persistence
Key: SPARK-20932
URL: https://issues.apache.org/jira/browse/SPARK-20932
Project: Spark
Issue Type: Improvement
Components: ML
Affects Versions: 2.3.0
Reporter: zhengruifeng
in {{CountVectorizer.fit}}, RDDs {{input}} & {{wordCounts}} should be
unpersisted after computation.
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