Hadoop with eclipse : Understanding execution flow of Trackers

[arun k <ar...@gmail.com>]

Hi !

I am interested in understanding the execution flow of the jobtracker,
tasktracker and in particular schedulers.
I have imported the Hadoop code as a project in the eclipse and could build
it and ran some wordcount application in debug mode.
I am able to understand the flow from job submission to job completion but
not the role of Jobtracker and Taskracker in job execution.
How do i know it ? Which applications should i run to know them?

Regards,
Arun