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MapReduce >> mail # user >> running job without jar


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Re: running job without jar
As far as I know, there is no way to run a Java class on a cluster.

To copy user specified files to different nodes, you can use Distributed
Cache.

On Tue, Oct 26, 2010 at 3:01 PM, exception <[EMAIL PROTECTED]> wrote:

>  Hi,
>
>
>
> When launching a job in hadoop, usually we use “hadoop jar xxx.jar input
> output”.
>
> Can I run a job simply by a java program (In fully distributed mode),
> without packing a jar.
>
> I know this will cause problems because the remote nodes don’t have the
> source code and .class to run the mapper/reducer. So my next question is how
> to tell hadoop to copy user specified files to different nodes?
>
>
>
> Thanks.
>