codec = WriterImpl.createCodec(compressionKind);
InputStream instream = InStream.create("footer", file, size - 1 - psLen - footerSize, footerSize,
codec, bufferSize);
footer = OrcProto.Footer.parseFrom(instream);
inspector = new OrcLazyRowObjectInspector(0, footer.getTypesList());
file.close();
}