Mailing-List: contact common-user-help@hadoop.apache.org; run by ezmlm
Precedence: bulk
Reply-To: common-user@hadoop.apache.org
Received-SPF: pass (athena.apache.org: domain of zhengda1936@gmail.com
 designates 209.85.212.48 as permitted sender)
DomainKey-Signature: a=rsa-sha1; c=nofws;
        d=gmail.com; s=gamma;
        h=message-id:date:from:user-agent:mime-version:to:subject:references
         :in-reply-to:content-type:content-transfer-encoding;
        b=NMI3c23XlJw1/uTXcQBTNPalQ+FR3Vh8obrrqBD6LUs9YBBcanqCx5TLF1JL/Jruly
         au5tzy+oEajFm3oq9cj3nEykeL3kdh2JEo7Ja0hd0eZ+rO4Ejcw+2RpWBk0p8jTUf24s
         AgjOHEZT2JR1YAnvR7P6euUtymfqAzVlbjMVE=
Message-ID: <4D1F9EFF.9090305@gmail.com>
Date: Sat, 01 Jan 2011 16:39:11 -0500
From: Da Zheng <zhengda1936@gmail.com>
User-Agent: Mozilla/5.0 (X11; U; Linux i686; en-US;
 rv:1.9.2.13) Gecko/20101208 Thunderbird/3.1.7
MIME-Version: 1.0
To: common-user@hadoop.apache.org
Subject: Re: how to build hadoop in Linux
References: <4D1D7346.9020409@gmail.com>
	<AANLkTi=HnkksNnCNnPNYMmU8gUYne5sKud6ESUSi9dU9@mail.gmail.com>
	<4D1F3FEA.9040402@gmail.com>
	<AANLkTikEYP3uMKsANGTiM7BB1rB1y9gTm2b6T5Pproik@mail.gmail.com>
	<4D1F7ED5.4070401@gmail.com>
 <AANLkTikx86gY=bCxP09XKZ0zLOOXmizyhC_OP3-xa1mK@mail.gmail.com>
In-Reply-To: <AANLkTikx86gY=bCxP09XKZ0zLOOXmizyhC_OP3-xa1mK@mail.gmail.com>
Content-Type: text/plain; charset=ISO-8859-1; format=flowed
Content-Transfer-Encoding: 7bit

I think I get some ideas how to use different targets after using them.
Thanks,
Da

On 01/01/2011 02:26 PM, Ted Yu wrote:
> How about compile-core-native ?
>
> On Sat, Jan 1, 2011 at 11:21 AM, Da Zheng<zhengda1936@gmail.com>  wrote:
>
>> Sorry, I didn't express my question 3 clearly.
>> I suppose ant is very much like Makefile so there are some targets in
>> build.xml
>> and we can use them to build hadoop in a certain way. It's actually related
>> to
>> my first question. For example, if I want to just compile the code (java
>> and the
>> related native C code) but not build documents, which target should I
>> choose?
>>
>> Best,
>> Da
>>
>> On 1/1/11 10:31 AM, Ted Yu wrote:
>>> For question #3, this should be helpful:
>>> http://ant.apache.org/manual/tasksoverview.html#compile
>>>
>>> On Sat, Jan 1, 2011 at 6:53 AM, Da Zheng<zhengda1936@gmail.com>  wrote:
>>>
>>>> Happy new year!
>>>>
>>>> Thanks. After applying the patch, I can compile the code with
>>>> ant -Dforrest.home=/home/zhengda/apache-forrest-0.8 compile-core tar
>>>> but there is still something unclear to me:
>>>> first, how do I compile only the java code? it takes quite a while to
>>>> rebuild
>>>> hadoop with the command above.
>>>> secondly, after I rebuild hadoop, I get some jar files such as
>>>> hadoop-0.20.3-dev-core.jar under the directory of build/. How do I use
>>>> them? do
>>>> I need to move to some specific directory?
>>>> thirdly, what arguments I can use in ant?
>>>>
>>>> Best,
>>>> Da
>>>>
>>>> On 12/31/10 1:36 AM, Konstantin Boudnik wrote:
>>>>> 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
>>>>>>
>>>>
>>