[jira] [Assigned] (SPARK-11080) NamedExpression.newExprId should only be called on driver

["Apache Spark (JIRA)" <ji...@apache.org>]

     [ https://issues.apache.org/jira/browse/SPARK-11080?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]

Apache Spark reassigned SPARK-11080:
------------------------------------

    Assignee: Josh Rosen  (was: Apache Spark)

> NamedExpression.newExprId should only be called on driver
> ---------------------------------------------------------
>
>                 Key: SPARK-11080
>                 URL: https://issues.apache.org/jira/browse/SPARK-11080
>             Project: Spark
>          Issue Type: Bug
>          Components: SQL
>            Reporter: Josh Rosen
>            Assignee: Josh Rosen
>
> My understanding of {{NamedExpression.newExprId}} is that it is only intended to be called on the driver. If it is called on executors, then this may lead to scenarios where the same expression id is re-used in two different NamedExpressions.
> More generally, I think that calling {{NamedExpression.newExprId}} within tasks may be an indicator of potential attribute binding bugs. Therefore, I think that we should prevent {{NamedExpression.newExprId}} from being called inside of tasks by throwing an exception when such calls occur. 



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