All, A change to break the build if hard-tabs are present in source files has a dependency on the latest version of maven. Older versions have been reported to fail with an error similar to:
Failed to execute goal org.apache.maven.plugins:maven-checkstyle-plugin:2.17:check (verify-style) on project apache-asterixdb-hyracks: 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 '<>/asterixdb/hyracks-fullstack/src/main/java,<>/asterixdb/hyracks-fullstack/src/test/java' of type java.lang.String to property of type java.util.List -> [Help 1] Please ensure you are running with Maven 3.3.9 to avoid this issue. Thanks, -MDB
