Masatake Iwasaki is Software Engineer at NTT DATA Corporation. He provides technical consultation for Open Source software such as Hadoop, HBase, and PostgreSQL.
Shinichi Yamashita is a Chief Engineer at OSS professional service unit in NTT DATA Corporation in Japan. He has more than seven years' experience in software and middleware (Apache, Tomcat, PostgreSQL, and Hadoop eco system) engineering. NTT DATA is your Innovation Partner anywhere around the world. It provides professional services from consulting, and system development to business IT outsourcing. In Japan, he has authored some books on Hadoop.
I thank my co-workers.