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Posted to issues@spark.apache.org by "Dongjoon Hyun (JIRA)" <ji...@apache.org> on 2019/06/09 23:43:00 UTC

[jira] [Updated] (SPARK-25752) Add trait to easily whitelist logical operators that produce named output from CleanupAliases

     [ https://issues.apache.org/jira/browse/SPARK-25752?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]

Dongjoon Hyun updated SPARK-25752:
----------------------------------
    Affects Version/s:     (was: 2.4.0)
                       3.0.0

> 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: 3.0.0
>            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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