Configuring Fully-Distributed Operation

[Mohamed Elsayed]

After reading documentation in 
http://hadoop.apache.org/common/docs/r0.20.2/cluster_setup.html, I need 
example to each parameter value at hdfs-site.xml and mapred-site.xml to 
be clearer. What are mandatory parameters? Thanks in advance.

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Mohamed Elsayed
Bibliotheca Alexandrina