[jira] [Commented] (SPARK-13583) Enforce `UnusedImports` Java checkstyle rule

["Apache Spark (JIRA)" <ji...@apache.org>]

    [ https://issues.apache.org/jira/browse/SPARK-13583?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15172882#comment-15172882 ] 

Apache Spark commented on SPARK-13583:
--------------------------------------

User 'dongjoon-hyun' has created a pull request for this issue:
https://github.com/apache/spark/pull/11438

> Enforce `UnusedImports` Java checkstyle rule
> --------------------------------------------
>
>                 Key: SPARK-13583
>                 URL: https://issues.apache.org/jira/browse/SPARK-13583
>             Project: Spark
>          Issue Type: Task
>            Reporter: Dongjoon Hyun
>            Priority: Trivial
>
> After SPARK-6990, `dev/lint-java` keeps Java code healthy and helps PR review by saving much time.
> This issue aims to enforce `UnusedImports` rule by adding a `UnusedImports` rule to `checkstyle.xml` and fixing all existing unused imports.
> {code:title=checkstyle.xml|borderStyle=solid}
> +        <module name="UnusedImports"/>
> {code}
> This will also prevent the upcoming PR from having unused imports.



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