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Hadoop, mail # user - How to Set No of Mappers in program


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Re: How to Set No of Mappers in program
Dieter De Witte 2013-11-13, 09:25
you can configure the max split size, since you have one mapper per splits
this might be the way to go..
2013/11/13 unmesha sreeveni <[EMAIL PROTECTED]>

> For my 5000 recorded file .. How many mappers will be running?
>
> And is there a way to know how my files are splited?
>
>
> On Wed, Nov 13, 2013 at 9:51 AM, unmesha sreeveni <[EMAIL PROTECTED]>wrote:
>
>> How to set the no of mappers?
>>
>> I am running a job with input file of 5000 records.but actually it is a
>> small file for hadoop..but i need to know whether it can be exceuted faster.
>>
>> when i tried to run my job it took nearly 30 min to complete my job...
>> why so?
>>
>> If i set my mappers to a lower count whether any reflection happens to my
>> job performance?
>>
>> --
>> *Thanks & Regards*
>>
>> Unmesha Sreeveni U.B
>>
>> *Junior Developer*
>>
>>
>>
>
>
> --
> *Thanks & Regards*
>
> Unmesha Sreeveni U.B
>
> *Junior Developer*
>
>
>