Apache Hadoop Yarn Overview




Here we describe Apache Hadoop Yarn, which is a resource manager built into Hadoop. But it also is a stand-alone programming framework that other applications can use to run those applications across a distributed architecture. We illustrate Yarn by setting up a Hadoop cluster as Yarn by itself is not much to see. It is not something you work with […]

Read more

Apache YARN Hadoop NextGen MapReduce




MapReduce has undergone a complete overhaul in hadoop-0.23 and we now have, what we call, MapReduce 2.0 (MRv2) or YARN Hadoop. The fundamental idea of MRv2 is to split up the two major functionalities of the JobTracker, resource management and job scheduling/monitoring, into separate daemons. The idea is to have a global ResourceManager (RM) and per-application ApplicationMaster (AM). An application […]

Read more