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From "Naama Kraus" <naamakr...@gmail.com>
Subject Re: Map Reduce over HBase - sample code
Date Sun, 22 Jun 2008 12:47:46 GMT
How do I do that ?
I'll anyway try to re-send.

Naama

On Thu, Jun 19, 2008 at 7:10 PM, Jim Kellerman <jim@powerset.com> wrote:

> You could also attach your example to the HBase Wiki.
>
> ---
> Jim Kellerman, Senior Engineer; Powerset
>
>
> > -----Original Message-----
> > From: Daniel Blaisdell [mailto:lunk.djedi@gmail.com]
> > Sent: Thursday, June 19, 2008 5:37 AM
> > To: hbase-user@hadoop.apache.org
> > Subject: Re: Map Reduce over HBase - sample code
> >
> > Naama,
> >
> > It doesn't look like your attachments remained intact. Could
> > you place the files on a webserver, or persistent pastebin?
> >
> > -Daniel
> >
> > On Thu, Jun 19, 2008 at 8:03 AM, Naama Kraus
> > <naamakraus@gmail.com> wrote:
> >
> > > Hi,
> > >
> > > I was trying to figure out how to write a MapReduce job above HBase
> > > but couldn't find a complete example. What I did, I fished
> > pieces from
> > > various sources (HBase tests, examples, source code ...)
> > and came up
> > > with a program that worked for me.
> > > First, I thought to share it with this forum, in case anyone else
> > > would find it useful. Second, I'd very much appreciate any
> > > comments/feedback on the code (two Java files attached).
> > >
> > > The MR job input is an HBase table (GradesTable.java) where student
> > > names are row keys, and columns are course names. Cells contain the
> > > student's grade in the corresponding course. The MR job
> > > (GradesTableMapReduce.java) computes for each student his average
> > > grade in courses and puts it in a new column in the original table.
> > >
> > > I used hbase-0.1.1, local mode, for testing the code.
> > >
> > > Thanks for any input,
> > > Naama
> > >
> > > --
> > > oo 00 oo 00 oo 00 oo 00 oo 00 oo 00 oo 00 oo 00 oo 00 oo 00
> > oo 00 oo
> > > 00 oo 00 oo 00 oo "If you want your children to be
> > intelligent, read
> > > them fairy tales. If you want them to be more intelligent,
> > read them
> > > more fairy tales." (Albert
> > > Einstein)
> >
> > No virus found in this incoming message.
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> > Version: 8.0.100 / Virus Database: 270.4.0/1509 - Release
> > Date: 6/19/2008 8:00 AM
> >
> No virus found in this outgoing message.
> Checked by AVG.
> Version: 8.0.100 / Virus Database: 270.4.0/1509 - Release Date: 6/19/2008
> 8:00 AM
>



-- 
oo 00 oo 00 oo 00 oo 00 oo 00 oo 00 oo 00 oo 00 oo 00 oo 00 oo 00 oo 00 oo
00 oo 00 oo
"If you want your children to be intelligent, read them fairy tales. If you
want them to be more intelligent, read them more fairy tales." (Albert
Einstein)

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