Re: Multiple mappers, different parameter values

[Abhinav M Kulkarni]

Hi Mirko,

Thanks for the reply.

Yeah that's one solution.

--
Abhinav


On 04/02/2013 10:04 AM, Mirko Kämpf wrote:

Hi,

I would add an id to the parameter name: "num.iterations.ID <http://num.iterations.ID>=something" If your mapper knows what ID it has it can just pick up this value from the context. But the question is: How does the mapper know about it's ID? Is it related to the input? Thank it can be calculated but this is

a domain specific issue.

Best wishes
Mirko

2013/4/2 Abhinav M Kulkarni <abhinavkulka...@gmail.com <mailto:abhinavkulka...@gmail.com>>

    Hi,

    I have a situation wherein I have multiple mappers. I am using
    MultipleInputs class to add them.

    Now, I need to pass different parameters to different mappers. For
    e.g. lets say I have a parameter 'num.iterations' that is set
    differently for different mappers. One way to pass parameters to
    mappers is to set them in a Configuration object:

    Configuration conf = new Configuration();
    conf.set("num.iterations", "100");

    However using this I can't set the value differently for different
    mappers. How do I achieve this?

    Thanks,
    Abhinav