Github user dongjoon-hyun commented on the pull request:
https://github.com/apache/spark/pull/12632#issuecomment-213907254
Interesting. @rxin . Jenkins is trying to use Maven 3.1.1 due to the
mismatch between `--force` option and `lint-java`.
```
Using `mvn` from path:
/home/jenkins/tools/hudson.tasks.Maven_MavenInstallation/Maven_3.1.1/bin/mvn
Java HotSpot(TM) 64-Bit Server VM warning: ignoring option
MaxPermSize=512M; support was removed in 8.0
Checkstyle checks failed at following occurrences:
[ERROR] Failed to execute goal
org.apache.maven.plugins:maven-checkstyle-plugin:2.17:check (default-cli) on
project spark-parent_2.11: Unable to parse configuration of mojo
org.apache.maven.plugins:maven-checkstyle-plugin:2.17:check for parameter
sourceDirectories: Cannot assign configuration entry 'sourceDirectories' with
value
'/home/jenkins/workspace/SparkPullRequestBuilder/src/main/java,/home/jenkins/workspace/SparkPullRequestBuilder/src/main/scala'
of type java.lang.String to property of type java.util.List -> [Help 1]
```
Actually, my PR #12631 aims to handle that bug. Could you review that too?
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