private static boolean isSomeHiveDir(String p) {
    return p.startsWith(BASE_PREFIX) || p.startsWith(DELTA_PREFIX) || p.startsWith(BUCKET_PREFIX)
        || p.startsWith(UNION_SUDBIR_PREFIX) || p.startsWith(DELETE_DELTA_PREFIX);
  }
Login using kerberos and also updates the current logged in user

@param principal  - kerberos principal
@param keytabFile - keytab file
@throws IOException - if keytab file cannot be found
llap-common/src/java/org/apache/hadoop/hive/llap/LlapUtil.java