Apache Mesos, written primarily in C++ is a cluster resource allocation framework. It is used by the Spark Project ( majority of Spark project is written in Scala ).
Apache Mesos - http://incubator.apache.org/mesos/ Spark Project - http://spark-project.org/ Tech Talk: Matei Zaharia (UC Berkeley) – “Spark: A Framework for Iterative and Interactive Cluster Computing” - http://vimeo.com/20757432