Kai Gai Kohei, NEC Business Creation Division/PG-Strom Project,Kai Gai Kohei has contributed PostgreSQL and various OSS projects for more than 10 yera.He developed some upstream features like selinux integration,security-barrier view, writable FDW and custom-scan/join interface,Recently,he focuses on the upcoming parallel query execution capability for both of homogeneous and heterogeneous.