[jira] [Closed] (SPARK-19808) About the default blocking arg in unpersist

["zhengruifeng (JIRA)" <ji...@apache.org>]

     [ https://issues.apache.org/jira/browse/SPARK-19808?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]

zhengruifeng closed SPARK-19808.
--------------------------------
    Resolution: Not A Problem

> 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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