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From welman Lu <welmanwe...@gmail.com>
Subject Re: Who creates job.jar?
Date Fri, 25 Jun 2010 10:29:56 GMT
*job.jar* is used to encapsulate the program code you write by yourself.
It's not an automatic produced file, but you self should create it manually.

And of course you can use other names to call this jar file.

If you don't understand, you can learn to study the
hadoop-0.20.2-dev-examples.jar file.


On Fri, Jun 25, 2010 at 12:22 PM, Pedro Costa <psdc1978@gmail.com> wrote:

> I don't understand when you say "you" :). I've created the
> hadoop-0.20.2-dev-core.jar and hadoop-0.20.2-dev-examples.jar and none of
> them has the job.jar. I've also searched all hadoop directories, and none of
> them have the jar.
>
> - When the jar is created and it's exported?
>
> - What do you mean by aws?
>
>
>
> On Thu, Jun 24, 2010 at 11:52 PM, Steve Lewis <lordjoe2000@gmail.com>wrote:
>
>> You create the jar and export it to aws before running the job. The jar
>> should contain all of your code and in a directory called lib all libraries
>> you need - I have a tool for generating jars but it is a little rough -
>>
>>
>> On Thu, Jun 24, 2010 at 2:38 PM, Pedro Costa <psdc1978@gmail.com> wrote:
>>
>>> Hi,
>>>
>>> 1 - Hadoop MR uses a job.jar used to execute MR. But who creates and when
>>> is created this job.jar?
>>>
>>> 2 - This job.jar is only created at run time during the execution of an
>>> MR task?
>>>
>>> 3 - It's created only 1 job.jar per MR execution?
>>>
>>>
>>> Thanks
>>> --
>>> Pedro
>>>
>>
>>
>>
>> --
>> Steven M. Lewis PhD
>> Institute for Systems Biology
>> Seattle WA
>>
>
>
>
> --
> Pedro
>

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