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https://issues.apache.org/jira/browse/SPARK-13583?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15173040#comment-15173040
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Dongjoon Hyun commented on SPARK-13583:
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I changed the content of this issue since `lint-java` is not executed
automatically by Jenkins as of today.
Thanks, [~zsxwing]
> Support `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}
> Unfortunately, `dev/lint-java` is not tested by Jenkins. (
> https://github.com/apache/spark/blob/master/dev/run-tests.py#L546 )
> This will also help Spark contributors to check by themselves before
> submitting their PRs.
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