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From Konstantin Boudnik <...@apache.org>
Subject Re: how to build hadoop in Linux
Date Fri, 31 Dec 2010 06:36:10 GMT
The Java5 dependency is about to go from Hadoop. See HADOOP-7072. I
will try to commit it first thing next year. So, wait a couple of days
and you'll be all right.

Happy New Year everyone!

On Thu, Dec 30, 2010 at 22:08, Da Zheng <zhengda1936@gmail.com> wrote:
> Hello,
> I need to build hadoop in Linux as I need to make some small changes in the
> code, but I don't know what is the simplest way to build hadoop. I googled it
> and so far I only found two places that tell how to build hadoop. One is
> http://bigdata.wordpress.com/2010/05/27/hadoop-cookbook-3-how-to-build-your-own-hadoop-distribution/.
> I downloaded apache forrest, and do as it
> ant -Djava5.home=/usr/lib/jvm/java-1.5.0-gcj-4.4/
> -Dforrest.home=/home/zhengda/apache-forrest-0.8 compile-core tar
> and get an error:
>     [exec] BUILD FAILED
>     [exec] /home/zhengda/apache-forrest-0.8/main/targets/validate.xml:158:
> java.lang.NullPointerException
> What does this error mean? it seems apache forrest is used to create hadoop
> document and I just want to rebuild hadoop java code. Is there a way for me to
> just rebuild java code? I ran "ant", it seems to work successfully, but I don't
> know if it really compiled the code.
> the other place I found is to show how to build hadoop with eclipse. I use
> macbook and I have to ssh to linux boxes to work on hadoop, so it's not a very
> good option even if it can really work.
> Best,
> Da

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