Return-Path: 
 <user-return-13919-apmail-cassandra-user-archive=cassandra.apache.org@cassandra.apache.org>
Delivered-To: apmail-cassandra-user-archive@www.apache.org
Received: (qmail 24242 invoked from network); 24 Feb 2011 00:26:53 -0000
Received: from hermes.apache.org (HELO mail.apache.org) (140.211.11.3)
  by minotaur.apache.org with SMTP; 24 Feb 2011 00:26:53 -0000
Received: (qmail 29910 invoked by uid 500); 24 Feb 2011 00:26:51 -0000
Delivered-To: apmail-cassandra-user-archive@cassandra.apache.org
Received: (qmail 29857 invoked by uid 500); 24 Feb 2011 00:26:51 -0000
Mailing-List: contact user-help@cassandra.apache.org; run by ezmlm
Precedence: bulk
List-Help: <mailto:user-help@cassandra.apache.org>
List-Unsubscribe: <mailto:user-unsubscribe@cassandra.apache.org>
List-Post: <mailto:user@cassandra.apache.org>
List-Id: <user.cassandra.apache.org>
Reply-To: user@cassandra.apache.org
Delivered-To: mailing list user@cassandra.apache.org
Received: (qmail 29849 invoked by uid 99); 24 Feb 2011 00:26:51 -0000
Received: from nike.apache.org (HELO nike.apache.org) (192.87.106.230)
    by apache.org (qpsmtpd/0.29) with ESMTP; Thu, 24 Feb 2011 00:26:51 +0000
X-ASF-Spam-Status: No, hits=1.5 required=5.0
	tests=FREEMAIL_FROM,HTML_MESSAGE,RCVD_IN_DNSWL_LOW,SPF_PASS,T_TO_NO_BRKTS_FREEMAIL
X-Spam-Check-By: apache.org
Received-SPF: pass (nike.apache.org: domain of narendra.sharma@gmail.com
 designates 209.85.161.44 as permitted sender)
Received: from [209.85.161.44] (HELO mail-fx0-f44.google.com) (209.85.161.44)
    by apache.org (qpsmtpd/0.29) with ESMTP; Thu, 24 Feb 2011 00:26:44 +0000
Received: by fxm15 with SMTP id 15so21732fxm.31
        for <user@cassandra.apache.org>; Wed, 23 Feb 2011 16:26:24 -0800 (PST)
DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed;
        d=gmail.com; s=gamma;
        h=domainkey-signature:mime-version:date:message-id:subject:from:to
         :content-type;
        bh=4YI+X1b21VNbsROR5XDcMJUiWgj1d94E6o+3X/4agwc=;
        b=I9TgyoNtmcC/NP60eTFytWJRDigCuQb1nA8wsICI0/YH9Lh8iLy96mdJkkB7Ea6Ek6
         GFnvcg7jqlfNWeCdFVhmx2PhXAwM28+cRe4A5QjSlGdi3acQzwWjv4abvrDnZwVKRTFa
         P2eCSI9nNHrqoV3D1IEZto2pe6hzo1cpR6RDc=
DomainKey-Signature: a=rsa-sha1; c=nofws;
        d=gmail.com; s=gamma;
        h=mime-version:date:message-id:subject:from:to:content-type;
        b=XE8WDGVMYPsUagR57RzJfh8jOHyC7uxi2bRJct5HDgPn9YVOxiEQFHxjo/+O1rlFWH
         UeQ+E1rMFw8yXg8LsGl6z45tgHyVOXVBSSD0cIaziEbqFJiJK+yMizpI14UyvRhyuuo+
         ZP0vzCe0HJeThxiIK//rccg4a180RyHBcX1E0=
MIME-Version: 1.0
Received: by 10.223.96.195 with SMTP id i3mr177657fan.77.1298507005829; Wed,
 23 Feb 2011 16:23:25 -0800 (PST)
Received: by 10.223.71.134 with HTTP; Wed, 23 Feb 2011 16:23:25 -0800 (PST)
Date: Wed, 23 Feb 2011 16:23:25 -0800
Message-ID: <AANLkTikxhtWG+50EQkqPr427g=cVKruoTaz-POC88p_n@mail.gmail.com>
Subject: Changing comparators
From: Narendra Sharma <narendra.sharma@gmail.com>
To: user@cassandra.apache.org
Content-Type: multipart/alternative; boundary=20cf3054a4d7d224dc049cfc380b
X-Virus-Checked: Checked by ClamAV on apache.org

--20cf3054a4d7d224dc049cfc380b
Content-Type: text/plain; charset=ISO-8859-1

Today it is not possible to change the comparators (compare_with and
compare_subcolumns_with). I went through the discussion on thread
http://comments.gmane.org/gmane.comp.db.cassandra.user/12466.

Does it make sense to atleast allow one way change i.e. from specific types
to generic type? For eg change from TimeUUIDType or UTF8 to BytesType. This
could be a manual process where users will do the schema change and then run
major compaction on all the nodes to fix the ordering.

Thanks,
Naren

--20cf3054a4d7d224dc049cfc380b
Content-Type: text/html; charset=ISO-8859-1
Content-Transfer-Encoding: quoted-printable

Today it is not possible to change the comparators (compare_with and compar=
e_subcolumns_with). I went through the discussion on thread <a href=3D"http=
://comments.gmane.org/gmane.comp.db.cassandra.user/12466">http://comments.g=
mane.org/gmane.comp.db.cassandra.user/12466</a>. <br>
<br>Does it make sense to atleast allow one way change i.e. from specific t=
ypes to generic type? For eg change from TimeUUIDType or UTF8 to BytesType.=
 This could be a manual process where users will do the schema change and t=
hen run major compaction on all the nodes to fix the ordering.<br>
<br>Thanks,<br>Naren<br><br>

--20cf3054a4d7d224dc049cfc380b--