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From: Harsh J <harsh@cloudera.com>
Date: Sat, 1 Dec 2012 16:04:47 +0530
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 <CAOcnVr3YQJ=hK=Y_Q6STk_xp=TmMku+ansLk9=aP0S_=OAUQdw@mail.gmail.com>
Subject: Re: how to rebuild hadoop-core-0.20.2-cdh3u4.jar
To: "cdh-user@cloudera.org" <cdh-user@cloudera.org>, nnhung@pdx.edu
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Hi,

Since this is a CDH build specific question, I am moving the post to
cdh-user@cloudera.org
[https://groups.google.com/a/cloudera.org/forum/?fromgroups=#!forum/cdh-user]

To answer your question, you can simply do this:

[Assuming $HADOOP_HOME points to your CDH3u4 tarball location, which
you can download from
http://archive.cloudera.com/cdh/3/hadoop-0.20.2-cdh3u4.tar.gz btw.]

$ cd $HADOOP_HOME/src
# Do your JobClient modifications under the sources here.
# Good idea to git init and commit the whole directory the first time,
to track your changes.
# After changes, build them into a jar
$ ant jar
# Copy over and overwrite original jar (good idea to keep a backup.
$ cp build/hadoop-core-0.20.2-cdh3u4.jar ../

That should be all!

On Sat, Dec 1, 2012 at 6:46 AM, Nhung Nguyen <nnhung@pdx.edu> wrote:
> Hi ,
>
> I am trying to modify JobClient.class inside hadoop-core-0.20.2-cdh3u4.jar.
> But I can't find a good way to compile the source-codes to get a new a jar (
> with my modified JobClient.class)  without changing too much. Any help would
> be appreciated. Thanks
>
> Nhung Nguyen


-- 
Harsh J