@Override
      public boolean accept(File current, String name) {
        File file = new File(current, name);
        return file.isDirectory() && !FileUtils.isFileNewer(file, cutoffDate);
      }
Deletes folders older than (now - recommendationsArtifactsLifetime)
ambari-server/src/main/java/org/apache/ambari/server/api/services/stackadvisor/commands/StackAdvisorCommand.java