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From Rajesh Jain <rjai...@gmail.com>
Subject YARN Container JVMs
Date Tue, 20 Aug 2013 03:02:29 GMT
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

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