-Re: Multiple mappers, different parameter values
Abhinav M Kulkarni 2013-04-02, 19:40
Thanks for the reply.
Yeah that's one solution.
On 04/02/2013 10:04 AM, Mirko Kï¿½mpf wrote:
> I would add an id to the parameter name: "num.iterations.ID
> 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
> 2013/4/2 Abhinav M Kulkarni <[EMAIL PROTECTED]
> <mailto:[EMAIL PROTECTED]>>
> 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?