private static int getMaxTrailerSize() {
    int maxSize = 0;
    for (int version = HFile.MIN_FORMAT_VERSION; version <= HFile.MAX_FORMAT_VERSION; ++version) {
      maxSize = Math.max(getTrailerSize(version), maxSize);
    }
    return maxSize;
  }
The {@link HFile} format minor version.
hbase-server/src/main/java/org/apache/hadoop/hbase/io/hfile/FixedFileTrailer.java