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From "Apache Spark (JIRA)" <j...@apache.org>
Subject [jira] [Assigned] (SPARK-25892) AttributeReference.withMetadata method should have return type AttributeReference
Date Thu, 01 Nov 2018 15:01:00 GMT

     [ https://issues.apache.org/jira/browse/SPARK-25892?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
]

Apache Spark reassigned SPARK-25892:
------------------------------------

    Assignee:     (was: Apache Spark)

> AttributeReference.withMetadata method should have return type AttributeReference
> ---------------------------------------------------------------------------------
>
>                 Key: SPARK-25892
>                 URL: https://issues.apache.org/jira/browse/SPARK-25892
>             Project: Spark
>          Issue Type: Improvement
>          Components: SQL
>    Affects Versions: 2.4.0
>            Reporter: Jari Kujansuu
>            Priority: Trivial
>
> AttributeReference.withMetadata method should have return type AttributeReference instead
of Attribute.
> AttributeReference overrides withMetadata method defined in Attribute super class and
returns AttributeReference instance but method's return type is Attribute unlike in other
with... methods overridden by AttributeReference.
> In some cases you have to cast the return value back to AttributeReference.
> For example if you want to modify metadata for AttributeReference in LogicalRelation
you have to cast return value of withMetadata back to AttributeReference because LogicalRelation
takes Seq[AttributeReference] as argument.



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