hbase-user mailing list archives

Site index · List index
Message view « Date » · « Thread »
Top « Date » · « Thread »
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?

Regards,
</VJ>




On Thu, Jun 4, 2009 at 11:08 PM, Billy Pearson
<sales@pearsonwholesale.com>wrote:

> 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>
>>
>>
>
>

Mime
  • Unnamed multipart/alternative (inline, None, 0 bytes)
View raw message