http://hadoop.apache.org/docs/current/hadoop-yarn/hadoop-yarn-site/YARN.html
In this architecture -- The NodeManager is the per-machine framework agent who is responsible for containers. Questions: Are these container which execute the Map and Reduce Jobs, separate JVM's? What are the name of the this container JVM's and how can I control the Java properties for this container JVM's? Does mapred.reduce.java.opts/mapred.map.java.opts control the JVM properties? I am not seeing seperate JVM's being started by the NodeManager when I execute the WordCount program. Thanks, Rajesh
