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Posted to issues@spark.apache.org by "Sean R. Owen (Jira)" <ji...@apache.org> on 2020/12/06 01:04:00 UTC
[jira] [Resolved] (SPARK-33499) Enable `-Wunused:imports` in Scala
2.13 SBT
[ https://issues.apache.org/jira/browse/SPARK-33499?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]
Sean R. Owen resolved SPARK-33499.
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Resolution: Not A Problem
OK, so we don't remove it. I don't see the issue.
> Enable `-Wunused:imports` in Scala 2.13 SBT
> -------------------------------------------
>
> Key: SPARK-33499
> URL: https://issues.apache.org/jira/browse/SPARK-33499
> Project: Spark
> Issue Type: Sub-task
> Components: Build
> Affects Versions: 3.1.0
> Environment: !image-2020-11-20-18-49-16-384.png!
> Scala 2.13 think this is a {{unused import}} but Scala 2.12 compile failed without this import, so comments {{-Wunused:imports}} in Scala 2.13 and left a TODO in this pr
>
> Reporter: Yang Jie
> Priority: Minor
> Attachments: image-2020-11-20-18-50-21-567.png
>
>
> As the image, Scala 2.13 think `scala.language.higherKinds` is a {{unused import, }}but Scala 2.12 compile failed without this import, so comments {{-Wunused:imports}} in Scala 2.13 and left a TODO,
> we should enabled `-Wunused:imports` when Scala 2.12 is no longer supported.
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