src/main/resources/checkstyle-config.xml

<?xml version="1.0" encoding="UTF-8"?>
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  license agreements. See the NOTICE file distributed with this work for additional
  information regarding copyright ownership. The ASF licenses this file to
  You under the Apache License, Version 2.0 (the "License"); you may not use
  this file except in compliance with the License. You may obtain a copy of
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<!DOCTYPE module PUBLIC
    "-//Puppy Crawl//DTD Check Configuration 1.2//EN"
    "http://www.puppycrawl.com/dtds/configuration_1_2.dtd">

<!--  Checkstyle configuration for Apache Drill -->

<module name="Checker">

  <module name="TreeWalker">

    <module name="IllegalImport">
      <!-- For "org.apache.commons.lang.*" classes use the corresponding class from "org.apache.commons.lang3.*" -->
      <property name="illegalPkgs" value="com.google.hive12,com.beust.jcommander.internal,jersey.repackaged,org.apache.commons.lang"/>
    </module>

    <module name="AvoidStarImport">
      <property name="allowStaticMemberImports" value="true"/>
    </module>

    <module name="NeedBraces"/>

  </module>

  <module name="FileTabCharacter"/>

  <module name="RegexpSingleline">
    <property name="format" value="\s+$"/>
    <property name="message" value="A line of code cannot contain any trailing whitespace"/>
  </module>

</module>