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Date: Wed, 13 Feb 2013 19:58:43 -0800
Message-ID: 
 <CALte62yDAs63UoL9s5Uritf2uXR_KiRVBYzhZ7wmNf3keS-cXw@mail.gmail.com>
Subject: Re: RowKey design with hashing
From: Ted Yu <yuzhihong@gmail.com>
To: user@hbase.apache.org
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My name is Ted, not Lars :-)

On Wed, Feb 13, 2013 at 7:41 PM, Mehmet Simsek <nurettinsimsek@gmail.com>wr=
ote:

> Thanks Lars
>
> M.Nurettin =C5=9Eim=C5=9Fek
>
> On 14 =C5=9Eub 2013, at 05:18, Ted Yu <yuzhihong@gmail.com> wrote:
>
> > Jean-Marc:
> > You can find almost all the details you need from this JIRA:
> > HBASE-4218 Data Block Encoding of KeyValues (aka delta encoding / prefi=
x
> > compression)
> >
> > Cheers
> >
> > On Wed, Feb 13, 2013 at 6:09 PM, Jean-Marc Spaggiari <
> > jean-marc@spaggiari.org> wrote:
> >
> >> Hi Lars,
> >>
> >> Can you please tell more about key prefix block encoding? Or refer to
> >> some blog/doc? How it works, what it is, etc.?
> >>
> >> Thanks,
> >>
> >> JM
> >>
> >> 2013/2/13, lars hofhansl <larsh@apache.org>:
> >>> Depends on you search pattern.
> >>> If you never care about scans ordering i.e. you only do point gets to
> see
> >>> whether you've already seen an email address, do the hash part.
> >>>
> >>> I'd perfer #1 over #2, because it would let you do efficient key pref=
ix
> >>> block encoding (FAST_DIFF).
> >>>
> >>> -- Lars
> >>>
> >>>
> >>>
> >>> ________________________________
> >>> From: Nurettin =C5=9Eim=C5=9Fek <nurettinsimsek@gmail.com>
> >>> To: user@hbase.apache.org
> >>> Sent: Wednesday, February 13, 2013 12:35 AM
> >>> Subject: RowKey design with hashing
> >>>
> >>> Hi All,
> >>>
> >>> In our project mail adresses are row key. Which rowkey design  we
> should
> >>> choose?
> >>>
> >>> 1) com.yahoo@xxxx (Reversed)
> >>> 2) xxxx@yahoo.com
> >>> 3) md5 hash(xxxx@yahoo.com)
> >>> 4) Any other solution.
> >>>
> >>> Many thanks.
> >>>
> >>> --
> >>> M. Nurettin =C5=9E=C4=B0M=C5=9EEK
> >>
>

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