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 A2C04725E for ; Wed, 21 Dec 2011 13:45:46 +0000 (UTC) Received: (qmail 7290 invoked by uid 500); 21 Dec 2011 13:45:44 -0000 Delivered-To: apmail-cassandra-user-archive@cassandra.apache.org Received: (qmail 7216 invoked by uid 500); 21 Dec 2011 13:45:44 -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 7208 invoked by uid 99); 21 Dec 2011 13:45:44 -0000 Received: from athena.apache.org (HELO athena.apache.org) (140.211.11.136) by apache.org (qpsmtpd/0.29) with ESMTP; Wed, 21 Dec 2011 13:45:44 +0000 X-ASF-Spam-Status: No, hits=2.5 required=5.0 tests=FREEMAIL_FORGED_REPLYTO,SPF_PASS X-Spam-Check-By: apache.org Received-SPF: pass (athena.apache.org: local policy) Received: from [98.139.52.199] (HELO nm2.bullet.mail.ac4.yahoo.com) (98.139.52.199) by apache.org (qpsmtpd/0.29) with SMTP; Wed, 21 Dec 2011 13:45:34 +0000 Received: from [98.139.52.189] by nm2.bullet.mail.ac4.yahoo.com with NNFMP; 21 Dec 2011 13:45:14 -0000 Received: from [98.139.52.164] by tm2.bullet.mail.ac4.yahoo.com with NNFMP; 21 Dec 2011 13:45:14 -0000 Received: from [127.0.0.1] by omp1047.mail.ac4.yahoo.com with NNFMP; 21 Dec 2011 13:45:14 -0000 X-Yahoo-Newman-Property: ymail-3 X-Yahoo-Newman-Id: 60578.27147.bm@omp1047.mail.ac4.yahoo.com Received: (qmail 63748 invoked by uid 60001); 21 Dec 2011 13:45:13 -0000 DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=yahoo.com; s=s1024; t=1324475113; bh=owB1rrOQSG0nQxnBk3PN5CBahEcAc37aUDQPlIF/H34=; h=X-YMail-OSG:Received:X-Mailer:Message-ID:Date:From:Reply-To:Subject:To:Cc:MIME-Version:Content-Type; b=rxS67JSvB4AHWEBlzaHXsKSzw3opD++Y2w78m2XuxkwHP2D61BF2GE621vAHlGuT10S/+95hdU2O6RPTNyo9FfL3Sy2mQH9JffQbb7D4Oj2W0q5u2Xigcn/t9UUSJscWDmwlus1nzaQ/VcjyZpP5LYeudbN4X8BBu6hZS5XN7gg= DomainKey-Signature: a=rsa-sha1; q=dns; c=nofws; s=s1024; d=yahoo.com; h=X-YMail-OSG:Received:X-Mailer:Message-ID:Date:From:Reply-To:Subject:To:Cc:MIME-Version:Content-Type; b=iUW9pU68D4OM5Ji3EVPWf38UjQaRbCWV1C/RNsjzJANeif8L1gcXGF+s7C2wI0RmAlSptoQ2QOFjUXQVVzEHOuYAIMj7Tu+t+yPUWZROAZJD4nRaZHwHzWtLcFKHkoFWKYF7odHVsAmemNq9PxB32sORg5D0kTgao/ynxcKHFKU=; X-YMail-OSG: RRccqSsVM1k8ByM0nVzb4GM9vZ3eOSciBsjlSAedsy0.QA1 3TeTKbW5BPi4MaQzWI1BTFjJOPOa5mFr1W2ZQb3Z4R9E8pwqj6G0YSRhdPpt NJQW.wOGV6D_ZpHPnQzyizQA4HI3mXmNosQw3Wh.G67AlKIBAmoJi3K3tLEQ .LufnJ4kjfRrp0BnUqU5GSxtUB3OaaUTwa6QGjcsnAcGlBp8AN3.g27c5wMG tw82IPFIgSj_txF.q.efdiAXzMcPcxw9v4SwdVTGWmSSumO0fuA6R0BSrGnQ L2q6ZGRC2AsseGmorxXTzuDqZX64stO3oHXQIIWZQ9fwQ6um82XtehGusdRO LHPYDVgwiBoM.5tArQfAcNRDUrwyZ3JxbQTejMHuiwoaiMssMJfA1QvVZV7W 1PvA6AwwbXNJDrA1Mjo4HZozkmLh2fbOZ4IQ87AoMoF0dOgC2jXEoAb7_hTi QFSyRKlI- Received: from [187.115.194.235] by web130104.mail.mud.yahoo.com via HTTP; Wed, 21 Dec 2011 05:45:13 PST X-Mailer: YahooMailWebService/0.8.115.331698 Message-ID: <1324475113.63313.YahooMailNeo@web130104.mail.mud.yahoo.com> Date: Wed, 21 Dec 2011 05:45:13 -0800 (PST) From: Rafael Almeida Reply-To: Rafael Almeida Subject: Creating column families per client To: "user@cassandra.apache.org" Cc: "marcotmarcot@gmail.com" MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Hello, I am evaluating the usage of cassandra for my system. I will have several clients who won't share data with each other. My idea is to create one column family per client. When a new client comes in and adds data to the system, I'd like to create a column family dynamically. Is that reliable? Can I create a column family on a node and imediately add new data on that column family and be confident that the data added will eventually become visible to a read? []'s Rafael