@Override public ResultWritable createValue() {
        return new ResultWritable(new Result());
      }
HiveHBaseTableInputFormat implements InputFormat for HBase storage handler
tables, decorating an underlying HBase TableInputFormat with extra Hive logic
such as column pruning and filter pushdown.
hbase-handler/src/java/org/apache/hadoop/hive/hbase/HiveHBaseTableInputFormat.java