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 76227CD8A for ; Thu, 17 May 2012 16:38:22 +0000 (UTC) Received: (qmail 4684 invoked by uid 500); 17 May 2012 16:38:20 -0000 Delivered-To: apmail-cassandra-user-archive@cassandra.apache.org Received: (qmail 4653 invoked by uid 500); 17 May 2012 16:38:20 -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 4644 invoked by uid 99); 17 May 2012 16:38:20 -0000 Received: from nike.apache.org (HELO nike.apache.org) (192.87.106.230) by apache.org (qpsmtpd/0.29) with ESMTP; Thu, 17 May 2012 16:38:20 +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 (nike.apache.org: domain of bfernandezsa@gmail.com designates 209.85.214.44 as permitted sender) Received: from [209.85.214.44] (HELO mail-bk0-f44.google.com) (209.85.214.44) by apache.org (qpsmtpd/0.29) with ESMTP; Thu, 17 May 2012 16:38:12 +0000 Received: by bkty8 with SMTP id y8so1995896bkt.31 for ; Thu, 17 May 2012 09:37:52 -0700 (PDT) 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=C1FsnJcY8FkM8y6juMI2TGIyxnt48fHsfVkIbETMIZg=; b=ENVAQfvYhg/64P+1Bkb9zdR++f2oqU0HBiZzMZzW5uKqwmB8L+1Ngap2fG8hMX70Wq SaG9lY+CK5TmfDOQKPk/MgLVte/ovDR7DILNB8M051R/nb6SDecNatIyb0eAzLl1X3I+ 1CwHpo+2dTKMtes4gAA4Nqp4iJ6krRfvAdyxn29Eahm66YIuzHQOD+JTtgOsKCkN6Hxm LKhjLb+QovHdC9AnTh1iJsaXvX5VRroPaj0We4dYQlVynfNjPz++UeMxCyp9I3fVKKe7 l98nS7caXjKR9Imce9cVYDSQWBd5Xd4q1dZjQWiOzm23RZilrhg18Q0pG3nK8wfI+CTC 8ChA== MIME-Version: 1.0 Received: by 10.205.133.197 with SMTP id hz5mr2867655bkc.126.1337272672154; Thu, 17 May 2012 09:37:52 -0700 (PDT) Received: by 10.205.83.68 with HTTP; Thu, 17 May 2012 09:37:52 -0700 (PDT) Date: Thu, 17 May 2012 11:37:52 -0500 Message-ID: Subject: Migrating a column family from one cluster to another From: Bryan Fernandez To: user@cassandra.apache.org Content-Type: multipart/alternative; boundary=000e0cdfd3ea9774e004c03e0eb6 --000e0cdfd3ea9774e004c03e0eb6 Content-Type: text/plain; charset=ISO-8859-1 Greetings, We presently have a single six node cluster, but are looking to distribute our data model across multiple clusters. What would be the recommended approach to migrating a few column families from a six node cluster to a three node cluster? I am under the impression that a snapshot of a column family on a single node would potentially be only 1/6 of the data present in the column family across the cluster. I guess what we are looking for is something like a mysql table dump that would could import into a new cluster with an arbitrary node count. What's the best practice for this type of a data migration? Thanks, Bryan --000e0cdfd3ea9774e004c03e0eb6 Content-Type: text/html; charset=ISO-8859-1 Content-Transfer-Encoding: quoted-printable Greetings,

We presently have a single six node cluster, = but are looking to distribute our data model across multiple clusters. What= would be the recommended approach to migrating a few column families from = a six node cluster to a three node cluster? I am under the impression that = a snapshot of a column family on a single node would potentially be only 1/= 6 of the data present in the column family across the cluster. I guess what= we are looking for is something like a=A0mysql table dump that would could= import into a new cluster with an=A0arbitrary=A0node count. =A0What's = the best practice for this type of a data migration?

Thanks,

Bryan
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