Amazon EMR release 4.3.0 now offers upgraded versions of Apache Hadoop (2.7.1),Apache Spark (1.6.0), Ganglia (3.7.2), and an upgraded sandbox release of Presto (0.130). Hadoop 2.7.1 is a minor version upgrade with various bug fixes and performance enhancements. Spark 1.6.0 includes several original features,such as the compile-time type safety using the Dataset API, machine learning pipeline persistence using the Spark ML Pipeline API, or a variety of original machine learning algorithms in Spark ML,and automatic memory management between execution and cache memory in executors. Presto 0.130 now supports S3 server-side encryption and client-side encryption using the PrestoS3Filesystem.
Source: amazon.com