Apache Spark
Spark’s popularity is aided by the YARN resource manager for Hadoop and the Apache Mesos cluster-management software, both of which make it possible to run Spark, MapReduce and other processing engines on the same cluster using the same Hadoop storage layer. I wrote in 2012 about the move away from MapReduce as one of five big trends helping us rethink big data, and Spark has stepped up as the biggest part of that migration
