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From Vijay <vijay2...@gmail.com>
Subject Re: Question regarding MR for Hbase
Date Fri, 05 Jun 2009 16:55:18 GMT
*Thanks Billy and Eric*, i got a working thing now.... The Export Util
actually helped (should we add to the wiki?) now trying to get the response
back to the servlet....
*BTW*: is Hbase IRC working or it is only me?


On Thu, Jun 4, 2009 at 11:08 PM, Billy Pearson

> 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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