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https://issues.apache.org/jira/browse/SPARK-20932?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16030601#comment-16030601
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Apache Spark commented on SPARK-20932:
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User 'zhengruifeng' has created a pull request for this issue:
https://github.com/apache/spark/pull/18154
> 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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