@HiveDecimalVersionV2
  public static HiveDecimal createFromFast(FastHiveDecimal fastDec) {
    return new HiveDecimal(fastDec);
  }
Create a HiveDecimal from a FastHiveDecimal object. Used by HiveDecimalWritable.
@param fastDec the value to set
@return new hive decimal
storage-api/src/java/org/apache/hadoop/hive/common/type/HiveDecimal.java