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https://issues.apache.org/jira/browse/HADOOP-15252?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16530145#comment-16530145
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Andrew Wang commented on HADOOP-15252:
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I'm going to backport this to the branch-3's since bumping the version here
makes it show a different set of checkstyle issues when backporting, and it'd
be nice to keep them all in line.
> Checkstyle version is not compatible with IDEA's checkstyle plugin
> ------------------------------------------------------------------
>
> Key: HADOOP-15252
> URL: https://issues.apache.org/jira/browse/HADOOP-15252
> Project: Hadoop Common
> Issue Type: Improvement
> Reporter: Andras Bokor
> Assignee: Andras Bokor
> Priority: Major
> Fix For: 3.1.0
>
> Attachments: HADOOP-15252.001.patch, HADOOP-15252.002.patch,
> HADOOP-15252.003.patch, idea_checkstyle_settings.png
>
>
> After upgrading to the latest IDEA the IDE throws error messages in every few
> minutes like
> {code:java}
> The Checkstyle rules file could not be parsed.
> SuppressionCommentFilter is not allowed as a child in Checker
> The file has been blacklisted for 60s.{code}
> This is caused by some backward incompatible changes in checkstyle source
> code:
> [http://checkstyle.sourceforge.net/releasenotes.html]
> * 8.1: Make SuppressionCommentFilter and SuppressWithNearbyCommentFilter
> children of TreeWalker.
> * 8.2: remove FileContentsHolder module as FileContents object is available
> for filters on TreeWalker in TreeWalkerAudit Event.
> IDEA uses checkstyle 8.8
> We should upgrade our checkstyle version to be compatible with IDEA's
> checkstyle plugin.
> Also it's a good time to upgrade maven-checkstyle-plugin as well to brand
> new 3.0.
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