Return-Path: 
 <user-return-14007-apmail-cassandra-user-archive=cassandra.apache.org@cassandra.apache.org>
Delivered-To: apmail-cassandra-user-archive@www.apache.org
Received: (qmail 96032 invoked from network); 24 Feb 2011 20:44:06 -0000
Received: from hermes.apache.org (HELO mail.apache.org) (140.211.11.3)
  by minotaur.apache.org with SMTP; 24 Feb 2011 20:44:06 -0000
Received: (qmail 60439 invoked by uid 500); 24 Feb 2011 20:44:04 -0000
Delivered-To: apmail-cassandra-user-archive@cassandra.apache.org
Received: (qmail 60390 invoked by uid 500); 24 Feb 2011 20:44:03 -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 60382 invoked by uid 99); 24 Feb 2011 20:44:03 -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 20:44:03 +0000
X-ASF-Spam-Status: No, hits=1.5 required=5.0
	tests=HTML_MESSAGE,RCVD_IN_DNSWL_LOW,SPF_PASS
X-Spam-Check-By: apache.org
Received-SPF: pass (nike.apache.org: domain of tyler@datastax.com designates
 74.125.82.172 as permitted sender)
Received: from [74.125.82.172] (HELO mail-wy0-f172.google.com) (74.125.82.172)
    by apache.org (qpsmtpd/0.29) with ESMTP; Thu, 24 Feb 2011 20:43:57 +0000
Received: by wyb42 with SMTP id 42so1011578wyb.31
        for <user@cassandra.apache.org>; Thu, 24 Feb 2011 12:43:36 -0800 (PST)
MIME-Version: 1.0
Received: by 10.216.19.207 with SMTP id n57mr1459163wen.30.1298580207567; Thu,
 24 Feb 2011 12:43:27 -0800 (PST)
Received: by 10.216.183.200 with HTTP; Thu, 24 Feb 2011 12:43:27 -0800 (PST)
X-Originating-IP: [64.132.24.248]
In-Reply-To: <AANLkTimnjiMmZ2c3Gf3ZsD813eNxcc1dt6uJKupZYeLD@mail.gmail.com>
References: <AANLkTimnjiMmZ2c3Gf3ZsD813eNxcc1dt6uJKupZYeLD@mail.gmail.com>
Date: Thu, 24 Feb 2011 14:43:27 -0600
Message-ID: <AANLkTinFCNZX+R78X9f4RYKb8i_hF+3TC45nCN1XB6QR@mail.gmail.com>
Subject: Re: Does CL on "ALL" have special semantics like "ANY" does
From: Tyler Hobbs <tyler@datastax.com>
To: user@cassandra.apache.org
Content-Type: multipart/alternative; boundary=0016e6de045ffc02a4049d0d43a6
X-Virus-Checked: Checked by ClamAV on apache.org

--0016e6de045ffc02a4049d0d43a6
Content-Type: text/plain; charset=ISO-8859-1

On Thu, Feb 24, 2011 at 2:36 PM, Anthony John <chirayithaj@gmail.com> wrote:

>
> Does "ALL"  succeed even if there is a single surviving replica for the
> given piece of data ?
> Again, tolerates node failure. Does it really mean - from ALL surviving
> nodes ?
>

All replicas (RF) for that row must respond before an operation at ALL is
considered a success.  That's all there is to it.

-- 
Tyler Hobbs
Software Engineer, DataStax <http://datastax.com/>
Maintainer of the pycassa <http://github.com/pycassa/pycassa> Cassandra
Python client library

--0016e6de045ffc02a4049d0d43a6
Content-Type: text/html; charset=ISO-8859-1
Content-Transfer-Encoding: quoted-printable

<div class=3D"gmail_quote">On Thu, Feb 24, 2011 at 2:36 PM, Anthony John <s=
pan dir=3D"ltr">&lt;<a href=3D"mailto:chirayithaj@gmail.com">chirayithaj@gm=
ail.com</a>&gt;</span> wrote:<br><blockquote class=3D"gmail_quote" style=3D=
"margin: 0pt 0pt 0pt 0.8ex; border-left: 1px solid rgb(204, 204, 204); padd=
ing-left: 1ex;">
<br><div>Does &quot;ALL&quot; =A0succeed even if there is a single survivin=
g replica for the given piece of data ?</div><div>Again, tolerates node fai=
lure. Does it really mean - from ALL surviving nodes ? <br></div></blockquo=
te>
</div><br>All replicas (RF) for that row must respond before an operation a=
t ALL is considered a success.=A0 That&#39;s all there is to it.<br><br>-- =
<br><font color=3D"#888888">Tyler Hobbs<span></span><br>
Software Engineer, <a href=3D"http://datastax.com/" target=3D"_blank">DataS=
tax</a><br>Maintainer of the <a href=3D"http://github.com/pycassa/pycassa" =
target=3D"_blank">pycassa</a> Cassandra Python client library<br></font><br=
>

--0016e6de045ffc02a4049d0d43a6--