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https://issues.apache.org/jira/browse/SPARK-8023?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=14568265#comment-14568265
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Burak Yavuz commented on SPARK-8023:
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cc [~yhuai]
> Random Number Generation inconsistent in projections in DataFrame
> -----------------------------------------------------------------
>
> Key: SPARK-8023
> URL: https://issues.apache.org/jira/browse/SPARK-8023
> Project: Spark
> Issue Type: Bug
> Components: SQL
> Reporter: Burak Yavuz
> Priority: Blocker
>
> to reproduce (in python):
> {code}
> df = sqlContext.range(0, 10).withColumn('uniform', rand(seed=10))
> df.select('uniform', 'uniform' + 1)
> {code}
> You should see that the first column + 1 doesn't equal the second column.
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