zhengruifeng created SPARK-19808:
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Summary: 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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