Return-Path: X-Original-To: apmail-cassandra-user-archive@www.apache.org Delivered-To: apmail-cassandra-user-archive@www.apache.org Received: from mail.apache.org (hermes.apache.org [140.211.11.3]) by minotaur.apache.org (Postfix) with SMTP id EFC729F6B for ; Fri, 16 Mar 2012 02:07:51 +0000 (UTC) Received: (qmail 53233 invoked by uid 500); 16 Mar 2012 02:07:49 -0000 Delivered-To: apmail-cassandra-user-archive@cassandra.apache.org Received: (qmail 53205 invoked by uid 500); 16 Mar 2012 02:07:49 -0000 Mailing-List: contact user-help@cassandra.apache.org; run by ezmlm Precedence: bulk List-Help: List-Unsubscribe: List-Post: List-Id: Reply-To: user@cassandra.apache.org Delivered-To: mailing list user@cassandra.apache.org Received: (qmail 53196 invoked by uid 99); 16 Mar 2012 02:07:49 -0000 Received: from nike.apache.org (HELO nike.apache.org) (192.87.106.230) by apache.org (qpsmtpd/0.29) with ESMTP; Fri, 16 Mar 2012 02:07:49 +0000 X-ASF-Spam-Status: No, hits=2.2 required=5.0 tests=HTML_MESSAGE,RCVD_IN_DNSWL_NONE,SPF_PASS X-Spam-Check-By: apache.org Received-SPF: pass (nike.apache.org: local policy) Received: from [208.113.200.5] (HELO homiemail-a92.g.dreamhost.com) (208.113.200.5) by apache.org (qpsmtpd/0.29) with ESMTP; Fri, 16 Mar 2012 02:07:43 +0000 Received: from homiemail-a92.g.dreamhost.com (localhost [127.0.0.1]) by homiemail-a92.g.dreamhost.com (Postfix) with ESMTP id CDFDA3DC05E for ; Thu, 15 Mar 2012 19:07:20 -0700 (PDT) DomainKey-Signature: a=rsa-sha1; c=nofws; d=thelastpickle.com; h=from :mime-version:content-type:subject:date:in-reply-to:to :references:message-id; q=dns; s=thelastpickle.com; b=HmsoAkIKmB p2SR+UWASRMSDWf02otifg/RMBUo+WbEXpaCIl07Fgd8x00y1GpcGikmCz0Ims3K IsCbR5bLD96/oaBv48pzBooOxcaekusJeVQsILeW9U8IdacEz9s1LCLbTwNzUCwc 9XTaejpX5voMxY0wQmRa5j1ADD+mdirg0= DKIM-Signature: v=1; a=rsa-sha1; c=relaxed; d=thelastpickle.com; h=from :mime-version:content-type:subject:date:in-reply-to:to :references:message-id; s=thelastpickle.com; bh=ZerZa+e45O8UWCWD 2Mxrw9I5i3E=; b=cE8iTDZSdOfGb2z0dtVmaC1DagtPhqhF0cs5E7MShVsk/Hcf fW1cNt792xm4YEWe8XRp2azbejsyTGJOR+cZhG30hfMOeZXKQs8+GS6S8OwTZih5 6PuRLX3wg6yWAzL70JtIqfSvy3+ZQiNCQzL6Xa+piR6j9Wx71oZxU+IeBkk= Received: from 202-126-206-232.vectorcommunications.net.nz (unknown [202.126.206.232]) (using TLSv1 with cipher AES128-SHA (128/128 bits)) (No client certificate requested) (Authenticated sender: aaron@thelastpickle.com) by homiemail-a92.g.dreamhost.com (Postfix) with ESMTPSA id 6A6FB3DC05B for ; Thu, 15 Mar 2012 19:07:20 -0700 (PDT) From: aaron morton Mime-Version: 1.0 (Apple Message framework v1257) Content-Type: multipart/alternative; boundary="Apple-Mail=_63D93236-7E70-4AB1-B35B-0918E49D7448" Subject: Re: Bootstrapping a new node to a running cluster Date: Fri, 16 Mar 2012 15:07:16 +1300 In-Reply-To: To: user@cassandra.apache.org References: <4F61AD41.6000800@sitevision.se> <9D70B73F-A79D-46E7-ACA7-6B4991A75739@thelastpickle.com> <4F61CE55.5050109@sitevision.se> Message-Id: <6D032969-6AC9-479C-A439-752545C4F035@thelastpickle.com> X-Mailer: Apple Mail (2.1257) X-Virus-Checked: Checked by ClamAV on apache.org --Apple-Mail=_63D93236-7E70-4AB1-B35B-0918E49D7448 Content-Transfer-Encoding: quoted-printable Content-Type: text/plain; charset=utf-8 The documentation is correct.=20 I was mistakenly remembering discussions in the past about RF > #nodes.=20= Cheers ----------------- Aaron Morton Freelance Developer @aaronmorton http://www.thelastpickle.com On 16/03/2012, at 4:34 AM, Do=C4=9Fan =C3=87e=C3=A7en wrote: >> I'm not sure why this is not allowed. As long as I do not use CL.all = there >> will be enough nodes available to satisfy the read / write (at least = when I >> look at ReadCallback and the WriteResponseHandler). Or am I missing >> something here? >=20 > According to = http://www.datastax.com/docs/1.0/cluster_architecture/replication >=20 > "As a general rule, the replication factor should not exceed the > number of nodes in the cluster. However, it is possible to increase > replication factor, and then add the desired number of nodes > afterwards. When replication factor exceeds the number of nodes, > writes will be rejected, but reads will be served as long as the > desired consistency level can be met." >=20 > --=20 > () ascii ribbon campaign - against html e-mail > /\ www.asciiribbon.org - against proprietary attachments --Apple-Mail=_63D93236-7E70-4AB1-B35B-0918E49D7448 Content-Transfer-Encoding: quoted-printable Content-Type: text/html; charset=utf-8 The = documentation is correct. 
I was mistakenly remembering = discussions in the past about RF > = #nodes. 

Cheers

http://www.thelastpickle.com

On 16/03/2012, at 4:34 AM, Do=C4=9Fan =C3=87e=C3=A7en = wrote:

I'm not sure why this is = not allowed. As long as I do not use CL.all = there
will be enough nodes = available to satisfy the read / write (at least when = I
look at ReadCallback and the = WriteResponseHandler). Or am I missing
something here?

According to http://www.datastax.com/docs/1.0/cluster_architecture/replication
=
"As a general rule, the replication factor should not exceed = the
number of nodes in the cluster. However, it is possible to = increase
replication factor, and then add the desired number of = nodes
afterwards. When replication factor exceeds the number of = nodes,
writes will be rejected, but reads will be served as long as = the
desired consistency level can be met."

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