public void setUncompressedDataIndexSize(long uncompressedDataIndexSize) {
    expectAtLeastMajorVersion(2);
    this.uncompressedDataIndexSize = uncompressedDataIndexSize;
  }
Returns the minor version of this HFile format
hbase-server/src/main/java/org/apache/hadoop/hbase/io/hfile/FixedFileTrailer.java