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https://issues.apache.org/jira/browse/HADOOP-16771?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=17000762#comment-17000762
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Andras Bokor commented on HADOOP-16771:
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Thanks, [~aajisaka]!
> Update checkstyle to 8.26 and maven-checkstyle-plugin to 3.1.0
> --------------------------------------------------------------
>
> Key: HADOOP-16771
> URL: https://issues.apache.org/jira/browse/HADOOP-16771
> Project: Hadoop Common
> Issue Type: Improvement
> Components: build
> Affects Versions: 3.3.0
> Reporter: Andras Bokor
> Assignee: Andras Bokor
> Priority: Major
> Fix For: 3.3.0, 3.1.4, 3.2.2
>
> Attachments: HADOOP-16771.001.patch
>
>
> After upgrading to the latest IDEA the IDE throws error message when I try to
> load the checkstyle xml
> {code:java}
> TreeWalker is not allowed as a parent of LineLength Please review 'Parent
> Module' section for this Check in web documentation if Check is
> standard.{code}
> [This is caused by some backward incompatible changes in checkstyle source
> code|https://github.com/checkstyle/checkstyle/issues/2116]
> IDEA uses checkstyle 8.26
> We should upgrade our checkstyle version to be compatible with IDEA's
> checkstyle plugin which is the latest.
> Also it's a good time to upgrade maven-checkstyle-plugin as well to 3.1.
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