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https://issues.apache.org/jira/browse/SPARK-22257?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Apache Spark reassigned SPARK-22257:
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Assignee: (was: Apache Spark)
> Reserve all non-deterministic expressions in ExpressionSet.
> -----------------------------------------------------------
>
> Key: SPARK-22257
> URL: https://issues.apache.org/jira/browse/SPARK-22257
> Project: Spark
> Issue Type: Bug
> Components: SQL
> Affects Versions: 2.2.0
> Reporter: Gengliang Wang
> Priority: Critical
>
> For non-deterministic expressions, they should be considered as not contained
> in the [[ExpressionSet]].
>
> This is consistent with how we define `semanticEquals` between two
> expressions.
> Otherwise, combining expressions will remove non-deterministic expressions
> which should be reserved.
> E.g
> Combine filters of
> ```
> testRelation.where(Rand(0) > 0.1).where(Rand(0) > 0.1)
> ```
> should result in
> ```
> testRelation.where(Rand(0) > 0.1 && Rand(0) > 0.1)
> ```
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