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https://issues.apache.org/jira/browse/SPARK-25752?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Dongjoon Hyun updated SPARK-25752:
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Target Version/s: (was: 3.2.0)
> Add trait to easily whitelist logical operators that produce named output
> from CleanupAliases
> ---------------------------------------------------------------------------------------------
>
> Key: SPARK-25752
> URL: https://issues.apache.org/jira/browse/SPARK-25752
> Project: Spark
> Issue Type: Improvement
> Components: SQL
> Affects Versions: 3.1.0
> Reporter: Tathagata Das
> Assignee: Tathagata Das
> Priority: Minor
>
> The rule `CleanupAliases` cleans up aliases from logical operators that do
> not match a whitelist. This whitelist is hardcoded inside the rule which is
> cumbersome. This PR is to clean that up by making a trait `HasNamedOutput`
> that will be ignored by `CleanupAliases` and other ops that require aliases
> to be preserved in the operator should extend it.
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