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https://issues.apache.org/jira/browse/SPARK-21644?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Xiao Li resolved SPARK-21644.
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Resolution: Fixed
Fix Version/s: 2.3.0
> LocalLimit.maxRows is defined incorrectly
> -----------------------------------------
>
> Key: SPARK-21644
> URL: https://issues.apache.org/jira/browse/SPARK-21644
> Project: Spark
> Issue Type: Bug
> Components: SQL
> Affects Versions: 2.2.0
> Reporter: Reynold Xin
> Assignee: Reynold Xin
> Fix For: 2.3.0
>
>
> {code}
> case class LocalLimit(limitExpr: Expression, child: LogicalPlan) extends
> UnaryNode {
> override def output: Seq[Attribute] = child.output
> override def maxRows: Option[Long] = {
> limitExpr match {
> case IntegerLiteral(limit) => Some(limit)
> case _ => None
> }
> }
> }
> {code}
> This is simply wrong, since LocalLimit is only about partition level limits.
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