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https://issues.apache.org/jira/browse/SPARK-8336?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=14584294#comment-14584294
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Apache Spark commented on SPARK-8336:
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User 'tedyu' has created a pull request for this issue:
https://github.com/apache/spark/pull/6793
> Fix NullPointerException with functions.rand()
> ----------------------------------------------
>
> Key: SPARK-8336
> URL: https://issues.apache.org/jira/browse/SPARK-8336
> Project: Spark
> Issue Type: Bug
> Reporter: Ted Yu
>
> The problem was first reported by Justin Yip in the thread
> 'NullPointerException with functions.rand()'
> Here is how to reproduce the problem:
> {code}
> sqlContext.createDataFrame(Seq((1,2), (3, 100))).withColumn("index",
> rand(30)).show()
> {code}
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