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https://issues.apache.org/jira/browse/SPARK-23374?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16358775#comment-16358775
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Marcelo Vanzin commented on SPARK-23374:
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I find it's just easier to run everything from the top level instead of doing
crazy pom hacking...
e.g. {{mvn -pl :spark-mesos_2.11 verify}} instead of {{cd blah/mesos && mvn
verify}}
> Checkstyle/Scalastyle only work from top level build
> ----------------------------------------------------
>
> Key: SPARK-23374
> URL: https://issues.apache.org/jira/browse/SPARK-23374
> Project: Spark
> Issue Type: Improvement
> Components: Build
> Affects Versions: 2.2.1
> Reporter: Rob Vesse
> Priority: Trivial
>
> The current Maven plugin definitions for Checkstyle/Scalastyle use fixed XML
> configs for the style rule locations that are only valid relative to the top
> level POM. Therefore if you try and do a {{mvn verify}} in an individual
> module you get the following error:
> {noformat}
> [ERROR] Failed to execute goal
> org.scalastyle:scalastyle-maven-plugin:1.0.0:check (default) on project
> spark-mesos_2.11: Failed during scalastyle execution: Unable to find
> configuration file at location scalastyle-config.xml
> {noformat}
> As the paths are hardcoded in XML and don't use Maven properties you can't
> override these settings so you can't style check a single module which makes
> doing style checking require a full project {{mvn verify}} which is not ideal.
> By introducing Maven properties for these two paths it would become possible
> to run checks on a single module like so:
> {noformat}
> mvn verify -Dscalastyle.location=../scalastyle-config.xml
> {noformat}
> Obviously the override would need to vary depending on the specific module
> you are trying to run it against but this would be a relatively simply change
> that would streamline dev workflows
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