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https://issues.apache.org/jira/browse/SPARK-19808?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15902317#comment-15902317
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zhengruifeng commented on SPARK-19808:
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[~srowen] Agreed. Changing the default may cause latent issues. I will close
this jira.
> About the default blocking arg in unpersist
> -------------------------------------------
>
> Key: SPARK-19808
> URL: https://issues.apache.org/jira/browse/SPARK-19808
> Project: Spark
> Issue Type: Question
> Components: ML, Spark Core
> Affects Versions: 2.1.0
> Reporter: zhengruifeng
> Priority: Minor
>
> Now, {{unpersist}} are commonly used with default value in ML.
> Most algorithms like {{KMeans}} use {{RDD.unpersisit}} and the default
> {{blocking}} is {{true}}
> And for meta algorithms like {{OneVsRest}}, {{CrossValidator}} use
> {{Dataset.unpersist}} and the default {{blocking}} is {{false}}
> Should the default value for {{RDD.unpersisit}} and {{Dataset.unpersist}} be
> consistent?
> And all the {{blocking}} arg in ML should be set {{false}}?
> [~srowen] [~mlnick] [~yanboliang]
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