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 556B210ED4 for ; Thu, 5 Dec 2013 19:32:28 +0000 (UTC) Received: (qmail 51767 invoked by uid 500); 5 Dec 2013 19:32:25 -0000 Delivered-To: apmail-cassandra-user-archive@cassandra.apache.org Received: (qmail 51713 invoked by uid 500); 5 Dec 2013 19:32:25 -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 51705 invoked by uid 99); 5 Dec 2013 19:32:25 -0000 Received: from athena.apache.org (HELO athena.apache.org) (140.211.11.136) by apache.org (qpsmtpd/0.29) with ESMTP; Thu, 05 Dec 2013 19:32:25 +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 (athena.apache.org: domain of ailinykh@gmail.com designates 209.85.217.172 as permitted sender) Received: from [209.85.217.172] (HELO mail-lb0-f172.google.com) (209.85.217.172) by apache.org (qpsmtpd/0.29) with ESMTP; Thu, 05 Dec 2013 19:32:20 +0000 Received: by mail-lb0-f172.google.com with SMTP id z5so10305045lbh.3 for ; Thu, 05 Dec 2013 11:31:59 -0800 (PST) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=20120113; h=mime-version:date:message-id:subject:from:to:content-type; bh=PqgATaVsxUSwK3SOR/ryhEqsGe9Hekz9b5oZv1SChpU=; b=al3+p1vi7RqLEHTe375m3/MgxOssWbV+eujZgjlu+yAeOxyY2t1w5jzKEVCnE9JmZg PpvGiyqkAsAf1qCQr+BCrscq1hwfJmx5UzwL5pQzbM0k2pMS/esJ0/aj4Q6Zv9JO/evE hvLxsC3Z4AB9sXxaG5rAfpqurjHf3RTBHUFgHSYyW9CgoAFeUoWoJQ5DPVSfh3a+0doY JSFsIki8dxhI1edWlsz4kXxUXhhdD1wIs5rh+07fs39pjf4XSOQ2G+jiaEbVzMVYZ1QE 3qpts4WgGZDqFIcR/QHJE1D8rt7N9ddvvVCxWCiZ5Zg/X3PPnJCyUh3KB534JInxqx/J C2pA== MIME-Version: 1.0 X-Received: by 10.112.16.97 with SMTP id f1mr4572975lbd.10.1386271919112; Thu, 05 Dec 2013 11:31:59 -0800 (PST) Received: by 10.114.82.130 with HTTP; Thu, 5 Dec 2013 11:31:59 -0800 (PST) Date: Thu, 5 Dec 2013 11:31:59 -0800 Message-ID: Subject: vnodes on aws From: Andrey Ilinykh To: user@cassandra.apache.org Content-Type: multipart/alternative; boundary=001a11c3fdf64d074304ecce9505 X-Virus-Checked: Checked by ClamAV on apache.org --001a11c3fdf64d074304ecce9505 Content-Type: text/plain; charset=ISO-8859-1 Hello everybody! We run cassandra 1.1 on ec2 instances. We use three availability zones, the replication factor is 3 also. NetworkTopologyStrategy guarantees each row is replicated in all availability zones. So, if we lost one zone quorum operations still work. We think about to upgrade to 1.2. Virtual nodes are the main reason. My understanding is - vnodes are distributed randomly, so their is no way to put every row into all availability zones. Am I right? What would be the best way to deploy vnodes across several data centers (availability zones)? Thank you, Andrey --001a11c3fdf64d074304ecce9505 Content-Type: text/html; charset=ISO-8859-1 Content-Transfer-Encoding: quoted-printable
Hello everybody!
We run cassandra 1.1 on ec2 instances= . We use three availability zones, the replication factor is 3 also. Networ= kTopologyStrategy guarantees each row is replicated in all availability zon= es. So, if we lost one zone quorum operations still work. We think about to= upgrade to 1.2. Virtual nodes are the main reason. My understanding is - v= nodes are distributed randomly, so their is no way to put every row into al= l availability zones. =A0Am I right? What would be the best way to deploy v= nodes across several data centers (availability zones)?


Thank you,
=A0 Andrey=A0
=
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