Description
See the discussion at http://markmail.org/message/gpvzw7fcbo4rrtkt.
Currently, our REST api returns result sets in a binary form. This makes users to use our REST api difficult.
However, see another discussion at https://mail-archives.apache.org/mod_mbox/tajo-dev/201503.mbox/%3CCAFu6yH0DgBVwQNbYW3Hrp-6DVzP4fg65MNpuEQqGWUoQ_x_Siw@mail.gmail.com%3E. Since we plan to support other types of clients using REST api, we also need to support binary result sets.