public static boolean isOriginal(Footer footer) {
    return !CollectionUtils.isEqualCollection(footer.getTypesList().get(0).getFieldNamesList(),
        OrcRecordUpdater.ALL_ACID_ROW_NAMES);
  }
Check if the given file is original orc file or an ACID file.
@param footer The footer of the given file to check
@return <code>false</code> if an ACID file, <code>true</code> if a simple orc file
ql/src/java/org/apache/hadoop/hive/ql/io/orc/OrcInputFormat.java