1. T R E A S U R E D A T A USER DEFINED PARTITIONING A New Partitioning Strategy accelerating CDP Workload Kai Sasaki Software Engineer in Treasure Data 2. ABOUT ME - Kai Sasaki (@Lewuathe) - Software Engineer in Treasure Data since 2015 Working in Query Engine Team (Managing Hive, Presto in Treasure data) - Contributor of Hadoop, Spark, Presto 3. TOPICS PlazmaDB PlazmaDB is a metadata storage for