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From Peter Haidinyak <phaidin...@local.com>
Subject RE: Ad-hoc reports against HBase - any way? any tools?
Date Fri, 25 Feb 2011 23:27:18 GMT
That's what I thought but being new I just wanted make sure so I can get a better idea of the
internals.


-----Original Message-----
From: jdcryans@gmail.com [mailto:jdcryans@gmail.com] On Behalf Of Jean-Daniel Cryans
Sent: Friday, February 25, 2011 2:59 PM
To: user@hbase.apache.org
Subject: Re: Ad-hoc reports against HBase - any way? any tools?

It doesn't, I'm 99.9999% sure that Otis referred to MR jobs that are
run by himself and not by HBase. Look at the HTable code, there's no
dependency on mapred or mapreduce.

J-D

On Fri, Feb 25, 2011 at 2:56 PM, Peter Haidinyak <phaidinyak@local.com> wrote:
>> Consider a HBase cluster whose primary task is to ingest data, process
>> it with MR jobs, and store it back in some table(s).  That's what the
>> cluster does today.
>
> I was just wondering if when I did 'puts' or 'scans' in my HBase Client was HBase using
Map/Reduce to add/query the tables.
>
> -----Original Message-----
> From: jdcryans@gmail.com [mailto:jdcryans@gmail.com] On Behalf Of Jean-Daniel Cryans
> Sent: Friday, February 25, 2011 2:52 PM
> To: user@hbase.apache.org
> Subject: Re: Ad-hoc reports against HBase - any way? any tools?
>
> On Fri, Feb 25, 2011 at 2:49 PM, Peter Haidinyak <phaidinyak@local.com> wrote:
>> Sorry to jump in here but does HBase use Map/Reduce under the covers? I was under
the impression that HBase used the DFS of Hadoop but not Map/Reduce.
>
> You're right, and I don't see anything that contradicts that in this thread.
>
> J-D
>

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