https://speakerdeck.com/masayuki1984 2019-05-22 08:37:05 -0400 Thu, 01 Nov 2018 00:00:00 -0400 https://speakerdeck.com/masayuki1984/20181130-hadoop-dot-pptx https://speakerdeck.com/masayuki1984/20181130-hadoop-dot-pptx