public static String versionNumberToString(final int version) {
    return String.format("%d.%d.%d", ((version >> 20) & 0xff), ((version >> 12) & 0xff),
      (version & 0xfff));
  }
Returns the passed-in <code>version</code> int as a version String (e.g. 0x0103004 is 1.3.4)
hbase-server/src/main/java/org/apache/hadoop/hbase/client/VersionInfoUtil.java