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From "Billy Pearson" <sa...@pearsonwholesale.com>
Subject Re: Question regarding MR for Hbase
Date Fri, 05 Jun 2009 06:08:35 GMT
Take a look also at
TableMapReduceUtil

Its in the api docs for 0.19 and 0.20

Billy

"Vijay" <vijay2win@gmail.com> wrote in message 
news:9b40bc2a0906041247j7d25f5a4y61351200ae2bb61f@mail.gmail.com...
> Hello Everyone,
> I wanted to write a mr for hbase table.... there is a million record and i
> wanted to write a Map reduce task to scan through it and then get the data
> and find the 90the percentail of the result. It would be helpful if some 
> one
> has a tried it before...
>
> The thing which i am finding hard to understand and the question is:
> How does MR get the input to the MR job, i mean how do i get the scanner
> output to the MR job? i dont want to get a million row first and give it
> back to the MR job but i needed to the region server's data directly go to
> the MR job.
>
> I saw the example @
> http://www.nabble.com/Re:-Map-Reduce-over-HBase---sample-code-p18253120.html
> but
> still couldn't get it... :(.
>
> Thanks in advance!
>
> Regards,
> </VJ>
> 



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