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https://issues.apache.org/jira/browse/SPARK-4713?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=14232608#comment-14232608
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Apache Spark commented on SPARK-4713:
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User 'chenghao-intel' has created a pull request for this issue:
https://github.com/apache/spark/pull/3572
> SchemaRDD.unpersist() should not raise exception if it is not cached.
> ---------------------------------------------------------------------
>
> Key: SPARK-4713
> URL: https://issues.apache.org/jira/browse/SPARK-4713
> Project: Spark
> Issue Type: Bug
> Components: SQL
> Reporter: Cheng Hao
> Priority: Minor
>
> Unpersist a uncached RDD, will not raise exception, for example:
> {panel}
> val data = Array(1, 2, 3, 4, 5)
> val distData = sc.parallelize(data)
> distData.unpersist(true)
> {panel}
> But the SchemaRDD will throws exception if the SchemaRDD is not cached. Since
> SchemaRDD is the subclasses of the RDD, we should follow the same behavior.
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