Return-Path: X-Original-To: apmail-cassandra-dev-archive@www.apache.org Delivered-To: apmail-cassandra-dev-archive@www.apache.org Received: from mail.apache.org (hermes.apache.org [140.211.11.3]) by minotaur.apache.org (Postfix) with SMTP id 5D3249BF7 for ; Sat, 17 Mar 2012 11:16:05 +0000 (UTC) Received: (qmail 67731 invoked by uid 500); 17 Mar 2012 11:16:04 -0000 Delivered-To: apmail-cassandra-dev-archive@cassandra.apache.org Received: (qmail 67649 invoked by uid 500); 17 Mar 2012 11:16:03 -0000 Mailing-List: contact dev-help@cassandra.apache.org; run by ezmlm Precedence: bulk List-Help: List-Unsubscribe: List-Post: List-Id: Reply-To: dev@cassandra.apache.org Delivered-To: mailing list dev@cassandra.apache.org Received: (qmail 67639 invoked by uid 99); 17 Mar 2012 11:16:03 -0000 Received: from athena.apache.org (HELO athena.apache.org) (140.211.11.136) by apache.org (qpsmtpd/0.29) with ESMTP; Sat, 17 Mar 2012 11:16:03 +0000 X-ASF-Spam-Status: No, hits=-0.0 required=5.0 tests=SPF_PASS X-Spam-Check-By: apache.org Received-SPF: pass (athena.apache.org: domain of hsn@filez.com designates 64.6.108.239 as permitted sender) Received: from [64.6.108.239] (HELO ponto.amerinoc.com) (64.6.108.239) by apache.org (qpsmtpd/0.29) with ESMTP; Sat, 17 Mar 2012 11:15:55 +0000 Received: from fbsd8.localdomain (205.83.broadband7.iol.cz [88.102.83.205]) (authenticated bits=128) by ponto.amerinoc.com (8.14.5/8.14.5) with ESMTP id q2HBFVR5089601 (version=TLSv1/SSLv3 cipher=DHE-RSA-AES256-SHA bits=256 verify=NO) for ; Sat, 17 Mar 2012 12:15:34 +0100 (CET) (envelope-from hsn@filez.com) Received: from [127.0.0.1] ([10.0.0.1]) by fbsd8.localdomain (8.14.4/8.14.4) with ESMTP id q2HBFPQK044118 for ; Sat, 17 Mar 2012 12:15:26 +0100 (CET) (envelope-from hsn@filez.com) Message-ID: <4F647248.7030404@filez.com> Date: Sat, 17 Mar 2012 12:15:20 +0100 From: Radim Kolar User-Agent: Mozilla/5.0 (Windows NT 5.1; rv:11.0) Gecko/20120312 Thunderbird/11.0 MIME-Version: 1.0 To: dev@cassandra.apache.org Subject: Re: RFC: Cassandra Virtual Nodes References: In-Reply-To: Content-Type: text/plain; charset=ISO-8859-1; format=flowed Content-Transfer-Encoding: 7bit X-Antivirus: avast! (VPS 120317-0, 17.03.2012), Outbound message X-Antivirus-Status: Clean X-Virus-Checked: Checked by ClamAV on apache.org I don't like that every node will have same portion of data. 1. We are using nodes with different HW sizes (number of disks) 2. especially with ordered partitioner there tends to be hotspots and you must assign smaller portion of data to nodes holding hotspots