dongjoon-hyun commented on a change in pull request #681:
URL: https://github.com/apache/orc/pull/681#discussion_r611298068
##########
File path: java/pom.xml
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@@ -275,6 +275,10 @@
</module>
<module name="NewlineAtEndOfFile">
</module>
+ <module name="RegexpSingleline">
+ <property name="format" value="\s+$"/>
+ <property name="message" value="No trailing white space
allowed."/>
+ </module>
Review comment:
We need the following before `<checkstyleRules>`. Could you add that?
```xml
<configuration>
+ <sourceDirectories>
+ <directory>${basedir}/src/java</directory>
+ </sourceDirectories>
```
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