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Nan Zhu |
at Mar 18, 2011 at 6:12 pm
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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
member variables in TaskTrackerStatus.java
take care about the write() and read() in TaskTrackerStatus.java,
Best,
Nan
On Sat, Mar 19, 2011 at 1:59 AM, bikash sharma wrote:
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 able to checkout Hadoop common code base and build in Eclipse.
Specifically, which files should I look at, and after the above mentioned
modification, how to collect the statistics?
Thanks,
Bikash
--
Nan Zhu
School of Software,5501
Shanghai Jiao Tong University
800,Dongchuan Road,Shanghai,China
E-Mail:
[email protected]
