Jerry Shao ，Member of Technical Staff, Hortonworks。 Jerry Shao works as a member of the technical staff at Hortonworks focused mainly on Spark, especially Spark core, Spark on YARN, and Spark Streaming. Jerry is an active Apache Spark contributor and Apache Chukwa committer. Prior to Hortonworks, he was a software engineer at Intel working on performance tuning and optimization of Hadoop and Spark.