Hi Momina,
                   Thanks for replying. I wanted to know that JT and TT
interact with each other through this RPC Server and Client model, What
about the http Server Jetty.... what is it used for ??

Secondly, i would like to ask a related question, how does JT and TT
communicates with namenode and datanode?? Do they use the same RPC server
client mechanism or is there something else used for communication between
them.

Ahmad

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