Return-Path: Delivered-To: apmail-cassandra-user-archive@www.apache.org Received: (qmail 61289 invoked from network); 19 Apr 2010 06:45:25 -0000 Received: from unknown (HELO mail.apache.org) (140.211.11.3) by 140.211.11.9 with SMTP; 19 Apr 2010 06:45:25 -0000 Received: (qmail 18809 invoked by uid 500); 19 Apr 2010 06:45:24 -0000 Delivered-To: apmail-cassandra-user-archive@cassandra.apache.org Received: (qmail 18677 invoked by uid 500); 19 Apr 2010 06:45:21 -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 18669 invoked by uid 99); 19 Apr 2010 06:45:21 -0000 Received: from nike.apache.org (HELO nike.apache.org) (192.87.106.230) by apache.org (qpsmtpd/0.29) with ESMTP; Mon, 19 Apr 2010 06:45:21 +0000 X-ASF-Spam-Status: No, hits=0.0 required=10.0 tests=FREEMAIL_FROM,RCVD_IN_DNSWL_NONE,SPF_PASS,T_TO_NO_BRKTS_FREEMAIL X-Spam-Check-By: apache.org Received-SPF: pass (nike.apache.org: domain of prescod@gmail.com designates 209.85.217.221 as permitted sender) Received: from [209.85.217.221] (HELO mail-gx0-f221.google.com) (209.85.217.221) by apache.org (qpsmtpd/0.29) with ESMTP; Mon, 19 Apr 2010 06:45:13 +0000 Received: by gxk21 with SMTP id 21so598462gxk.5 for ; Sun, 18 Apr 2010 23:44:52 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=gamma; h=domainkey-signature:mime-version:received:reply-to:in-reply-to :references:from:date:received:message-id:subject:to:cc:content-type; bh=u4y0ZFAC8HdSoXNx0JENumgyzRLSt6XzR8gGmCWxhOc=; b=M6Lq69AvJvXHOX6lsS3BkORJ+Q7jilqSI1RgHmJllsLGiN6Cpr8WyAiskHZBqLoJvZ XL8+YJ+AEhsoL7pyD5duzoCqGc+Q2z4mvNglirXpbL1eEap6CPp+hovg/oV7exom/EtB 2q6FVoHiTulMcnMANYPZJwoweLgstPhqGF/S8= DomainKey-Signature: a=rsa-sha1; c=nofws; d=gmail.com; s=gamma; h=mime-version:reply-to:in-reply-to:references:from:date:message-id :subject:to:cc:content-type; b=UKRzGWAfKOHtE3jOvy9pSX6pX8eGzUVKZKwi1s9CXTwgPImvMhzjggaaqndj2faJOu zC3ktl9OhmHrKgD5usJYH9oMpodDS+J26fXAZ/g1U7LPanyvUasxRAxzYZvIP7VMl3du JEDD2Q+G78A8r7jPHeizVFMn2wygYT28xmxo4= MIME-Version: 1.0 Received: by 10.100.231.17 with HTTP; Sun, 18 Apr 2010 23:44:29 -0700 (PDT) Reply-To: paul@prescod.net In-Reply-To: References: <4BC88D97.7050104@gmail.com> From: Paul Prescod Date: Sun, 18 Apr 2010 23:44:29 -0700 Received: by 10.101.209.21 with SMTP id l21mr13152195anq.114.1271659490927; Sun, 18 Apr 2010 23:44:50 -0700 (PDT) Message-ID: Subject: Re: Regarding Cassandra Scalability To: user@cassandra.apache.org Cc: gdusbabek@gmail.com Content-Type: text/plain; charset=UTF-8 X-Virus-Checked: Checked by ClamAV on apache.org On Sun, Apr 18, 2010 at 9:14 AM, dir dir wrote: > Hi Gary, > >>The main reason is that the compaction operation (removing deleted >>values) currently requires that an entire row be read into memory. > > Thank you for your explanation. But I still do not understand what do you > mean. Do you have a pressing need to use Cassandra right now, before version 1.0 is even available? That limitation will go away before 1.0, so you could simply wait and not worry about it. Documentation will also be much more complete in the future. Paul Prescod