Mailing-List: contact hbase-user-help@hadoop.apache.org; run by ezmlm
Precedence: bulk
Reply-To: hbase-user@hadoop.apache.org
Received-SPF: pass (athena.apache.org: domain of ryanobjc@gmail.com designates
 209.85.210.197 as permitted sender)
DomainKey-Signature: a=rsa-sha1; c=nofws;
        d=gmail.com; s=gamma;
        h=mime-version:in-reply-to:references:date:message-id:subject:from:to
         :content-type;
        b=odOy3F/ZFr23tUSMF1951E4mzV1GnTdHBQXGpOUrUmnzcPL7jNLAH3a+E6LY6pkEdQ
         dxt2Ki2ts3KU9mdMkkx43QPFHsYUrLhRbdRF5kHzQ9eZ4cy/MbmULnVh9AAINYHSPyJ6
         aJCEux2LSMO6hCONj9vWf9wMKbodmjzeB9vSY=
MIME-Version: 1.0
In-Reply-To: <78568af10909221027y2c4da755u228714b0172f7589@mail.gmail.com>
References: <25530827.post@talk.nabble.com>
	 <7c962aed0909221023o424f8c45nbc301ec254e1d507@mail.gmail.com>
	 <78568af10909221027y2c4da755u228714b0172f7589@mail.gmail.com>
Date: Tue, 22 Sep 2009 10:30:21 -0700
Message-ID: <78568af10909221030x1c5716ct98a689a06c74f9af@mail.gmail.com>
Subject: Re: Best-practice/design query for storing a list/array of values
From: Ryan Rawson <ryanobjc@gmail.com>
To: hbase-user@hadoop.apache.org
Content-Type: multipart/alternative; boundary=000e0cd5f14cf34c1904742df3b5

--000e0cd5f14cf34c1904742df3b5
Content-Type: text/plain; charset=ISO-8859-1

Serializing even a large list into 1 column is not a bad thing necessairly.
The thing is when you update that column, you have to rewrite the whole
thing. If you expect lots of items and a frequent update it might be better
to store each item in a column as stack says above.

Another question you can ask is "does my app retrieve this list as a unit
always?". If so, and the update rate is not high, a serialized format may be
the most efficient route.

It all just depends on your app read/write patterns.

Good luck!

On Sep 22, 2009 10:24 AM, "stack" <stack@duboce.net> wrote:

Would a family devoted to your list -- called 'list'! -- work for you?  You
could get individual members of the list by doing list:membername or get
them all by getting all elements of the family, etc.
St.Ack


On Tue, Sep 22, 2009 at 9:57 AM, Keith Thomas <keith.thomas@gmail.com>wrote:

> > I have a family which contains an array, or list, of values. I don't
mind > whether it is an ar...

--000e0cd5f14cf34c1904742df3b5--