Github user dongjoon-hyun commented on the issue:
https://github.com/apache/spark/pull/21301
@kiszk . Could you update your PR description like this?
```
~/PR-21301:PR-21301$ dev/lint-java
exec: curl --progress-bar -L
https://downloads.typesafe.com/zinc/0.3.15/zinc-0.3.15.tgz
########################################################################
100.0%
exec: curl --progress-bar -L
https://downloads.typesafe.com/scala/2.11.8/scala-2.11.8.tgz
########################################################################
100.0%
exec: curl --progress-bar -L
https://www.apache.org/dyn/closer.lua?action=download&filename=/maven/maven-3/3.3.9/binaries/apache-maven-3.3.9-bin.tar.gz
########################################################################
100.0%
Using `mvn` from path:
/home/dongjoon/PR-21301/build/apache-maven-3.3.9/bin/mvn
Checkstyle checks passed.
```
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