private static Path reservedRawPath(URI uri) {
    return new Path(uri.getScheme(), uri.getAuthority(), CopyUtils.RAW_RESERVED_VIRTUAL_PATH + uri.getPath());
  }
DirCopyTask, mainly to be used to copy External table data.
ql/src/java/org/apache/hadoop/hive/ql/exec/repl/DirCopyTask.java