You need to know that we don't really consider Hadoop a good place to learn
about Java or distributed system programming: it is simply too complex.
It's like learning C by writing linux kernel device drivers -so we
explicitly warn against trying to do this
That said: we do we welcome new developers, and there is even a touch of C
code lurking in there too.
What I'd recommend is you start not by delving into the code of Hadoop, but
by learning how to use it: a tool to answer questions about data; a
platform you can build bigger applications from.
This leads to two possible projects
1. Think of something you are curious about and from which you can grab
public datasets from. A lot of government open datasets are really
interesting, especially when merged with other datasets. Then analyse it
-if you can find something interesting and new then that's something you
can talk about and get known for.
2. Try writing a web application using Hadoop and its nosql database(s) as
the back end -either web or mobile device front end, HBase/Accumulo at the
back, HDFS underneath. This will give you experience in how the stack fits
Doing either of these not only gradually introduces you into the world of
Hadoop & friends, it introduces you to the concepts gradually, rather than
dropping you into source code which is not only big and complex, but whose
main test setup -a few tens of servers- is a big investment on its own
-though renting cluster time from a cloud provider can provide an emulation
of that rack of machines.
It will also make it clear where Hadoop is lacking today -perhaps in some
of the APIs, perhaps in the web site, and its experience on tablets and
phones. Coming at those problems with the experience of actual needs will
help shape your thinking in what should be done.
Finally, while getting started with Hadoop, yes, you do need to read that
documentation, and sign up to the Hadoop user list [
http://hadoop.apache.org/mailing_lists.html#User] if you want to get help
getting things to work, code against Hadoop, etc. Questions like that to
the dev list just get ignored (sorry!)
On 23 September 2013 17:07, ankit nadig <[EMAIL PROTECTED]> wrote:
> im a newbie...i want to learn and contribute to hadoop.I've set up a
> single node cluster on ubuntu 12.04 . and i know c,c++ and am currently
> learning Java. I haven't read any documentation and am new to open source
> as such.
> sorry for wasting ur time and if this is the wrong place for this mail but
> can u give me any guidance on how to proceed ?
> thank you.
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