Xu,
Welcome!
Is there a specific area you are interested in? If so we can point
you to relevant classes etc. In fact, as you understand them I'd
encourage you to start documenting them to help others too.
One way to start is to take up simpler jiras, in the beginning, and
start fixing them:
https://issues.apache.org/jira/browse/MAPREDUCE
Also look at the 'Developer Documentation' section in the hadoop
wiki: http://wiki.apache.org/hadoop/.
This link might be useful http://wiki.apache.org/hadoop/HowToContribute
.
Arun
On Sep 14, 2010, at 8:02 PM, xu cheng wrote:
hello:
I've learn hadoop for some time, and I'm interesting in the
implementation
of the mapreduce framework of the Hadoop project. I think reading the
mapreduce framework source code would be a good way to do that and
debugging
the system to see how everything works would make this progress
better.
however I have no experience debugging distributed system. and I
have no
idea on how to debug the mapreduce framework source code. so could you
please help me?
any suggestion or reference would be appreciated! ^_^ thanks