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Hadoop >> mail # user >> Re: how to rebuild hadoop-core-0.20.2-cdh3u4.jar


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Re: how to rebuild hadoop-core-0.20.2-cdh3u4.jar
Hi, Harsh

I'm trying to solve the same problem.
Thanks a lot for your answer.
(2012/12/01 19:34), Harsh J wrote:
> Hi,
>
> Since this is a CDH build specific question, I am moving the post to
> [EMAIL PROTECTED]
> [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 <[EMAIL PROTECTED]> 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
>
>
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