Re: modification to Hadoop Jobtracker

2011-03-18 Thread Nan Zhu
Hi, bikash I also worked on this several months ago, If I don't have a wrong memory, the involved files should be: JobTracker.java, TaskTracker.java, the most interesting functions should be JobTracker.heartbeat(), and TaskTracker.transmitHeartbeat(), I think you will also need to add more membe

modification to Hadoop Jobtracker

2011-03-18 Thread bikash sharma
Hi, For my research project, I need to modify Hadoop JobTracker to collect some statistics of TaskTracker nodes. For example, I would like to piggy-back heartbeat messages sent from TaskTrackers to JobTracker with some extra information related to the resource utilization and other statistics. I am