[jira] [Resolved] (SPARK-30012) Change classes extending scala collection classes to work with 2.13

["Dongjoon Hyun (Jira)" <ji...@apache.org>]

     [ https://issues.apache.org/jira/browse/SPARK-30012?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]

Dongjoon Hyun resolved SPARK-30012.
-----------------------------------
    Fix Version/s: 3.0.0
       Resolution: Fixed

Issue resolved by pull request 26728
[https://github.com/apache/spark/pull/26728]

> Change classes extending scala collection classes to work with 2.13
> -------------------------------------------------------------------
>
>                 Key: SPARK-30012
>                 URL: https://issues.apache.org/jira/browse/SPARK-30012
>             Project: Spark
>          Issue Type: Sub-task
>          Components: Spark Core, SQL
>    Affects Versions: 3.0.0
>            Reporter: Sean R. Owen
>            Assignee: Sean R. Owen
>            Priority: Minor
>             Fix For: 3.0.0
>
>
> Several classes in the code base extend Scala collection classes, like:
> - ExternalAppendOnlyMap
> - CaseInsensitiveMap
> - AttributeMap
> - (probably more I haven't gotten to yet)
> The collection hierarchy changed in 2.13, and like elsewhere, I don't see that it's possible to use a compat library or clever coding to bridge the difference. I think we need to maintain two implementations in parallel source trees, possibly with a common ancestor with the commonalities.



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