From user-return-30549-apmail-cassandra-user-archive=cassandra.apache.org@cassandra.apache.org Tue Dec 11 16:29:19 2012 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 E6536DD7E for ; Tue, 11 Dec 2012 16:29:19 +0000 (UTC) Received: (qmail 85901 invoked by uid 500); 11 Dec 2012 16:29:17 -0000 Delivered-To: apmail-cassandra-user-archive@cassandra.apache.org Received: (qmail 85692 invoked by uid 500); 11 Dec 2012 16:29:17 -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 85671 invoked by uid 99); 11 Dec 2012 16:29:16 -0000 Received: from athena.apache.org (HELO athena.apache.org) (140.211.11.136) by apache.org (qpsmtpd/0.29) with ESMTP; Tue, 11 Dec 2012 16:29:16 +0000 X-ASF-Spam-Status: No, hits=-0.1 required=5.0 tests=HTML_MESSAGE,RCVD_IN_DNSWL_MED,SPF_PASS X-Spam-Check-By: apache.org Received-SPF: pass (athena.apache.org: domain of btv1==692cfc29024==mkjellman@barracuda.com designates 64.235.145.81 as permitted sender) Received: from [64.235.145.81] (HELO bsf01.barracuda.com) (64.235.145.81) by apache.org (qpsmtpd/0.29) with ESMTP; Tue, 11 Dec 2012 16:29:12 +0000 X-ASG-Debug-ID: 1355243323-03dc6627610c180001-f7dORa Received: from bn-scl-fe05.Cudanet.local (bn-scl-fe05.cudanet.local [10.8.1.46]) by bsf01.barracuda.com with ESMTP id LmpXbVjfF5cYpZX4 (version=TLSv1 cipher=AES128-SHA bits=128 verify=NO) for ; Tue, 11 Dec 2012 08:28:43 -0800 (PST) X-Barracuda-Envelope-From: mkjellman@barracuda.com Received: from bn-scl-be03.Cudanet.local (10.8.1.54) by bn-scl-fe05.Cudanet.local (10.8.1.46) with Microsoft SMTP Server (TLS) id 8.3.279.1; Tue, 11 Dec 2012 08:28:43 -0800 Received: from bn-scl-be03.Cudanet.local ([::1]) by bn-scl-be03.Cudanet.local ([::1]) with mapi; Tue, 11 Dec 2012 08:28:43 -0800 From: Michael Kjellman X-Barracuda-Apparent-Source-IP: ::1 To: "user@cassandra.apache.org" Date: Tue, 11 Dec 2012 08:28:43 -0800 Subject: Re: Vnode migration path Thread-Topic: Vnode migration path X-ASG-Orig-Subj: Re: Vnode migration path Thread-Index: Ac3XvJW2P5GO9936Rl6TQMHQOvIE1w== Message-ID: In-Reply-To: Accept-Language: en-US Content-Language: en-US X-MS-Has-Attach: X-MS-TNEF-Correlator: user-agent: Microsoft-MacOutlook/14.2.5.121010 acceptlanguage: en-US Content-Type: multipart/alternative; boundary="_000_CCEC9F0985B2mkjellmanbarracudacom_" MIME-Version: 1.0 X-Barracuda-Connect: bn-scl-fe05.cudanet.local[10.8.1.46] X-Barracuda-Start-Time: 1355243323 X-Barracuda-Encrypted: AES128-SHA X-Barracuda-URL: http://bsf01.barracuda.com:8000/cgi-mod/mark.cgi Received-SPF: softfail (barracuda.com: domain of transitioning mkjellman@barracuda.com does not designate ::1 as permitted sender) X-Barracuda-BRTS-Status: 1 X-Virus-Scanned: by bsmtpd at barracuda.com X-Barracuda-Spam-Score: 0.15 X-Barracuda-Spam-Status: No, SCORE=0.15 using per-user scores of TAG_LEVEL=1000.0 QUARANTINE_LEVEL=1000.0 KILL_LEVEL=9.0 tests=BSF_SPF_SOFTFAIL, CN_BODY_332, HTML_MESSAGE, THREAD_INDEX, THREAD_TOPIC X-Barracuda-Spam-Report: Code version 3.2, rules version 3.2.2.116720 Rule breakdown below pts rule name description ---- ---------------------- -------------------------------------------------- 0.01 THREAD_INDEX thread-index: AcO7Y8iR61tzADqsRmmc5wNiFHEOig== 0.01 THREAD_TOPIC Thread-Topic: ...(Japanese Subject)... 0.12 CN_BODY_332 BODY: CN_BODY_332 0.00 HTML_MESSAGE BODY: HTML included in message 0.00 BSF_SPF_SOFTFAIL Custom Rule SPF Softfail X-Virus-Checked: Checked by ClamAV on apache.org --_000_CCEC9F0985B2mkjellmanbarracudacom_ Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: quoted-printable Awesome (and very welcomed news), what kind of failure conditions can we ex= pect if a node goes down during the migration? From: Richard Low > Reply-To: "user@cassandra.apache.org" > Date: Tuesday, December 11, 2012 3:33 AM To: "user@cassandra.apache.org" > Subject: Re: Vnode migration path Hi Mike, There's also the shuffle utility (in the bin directory) that can incrementa= lly move ranges around to migrate to vnodes. Richard. On 11 December 2012 08:47, Michael Kjellman > wrote: So I'm wondering if anyone has given thought to their migration path to Vno= des. Other than having a separate cluster and migrating the data from the o= ld cluster to the vnode cluster what else can we do. One suggestion I've heard is start up a second Cassandra instance on each n= ode on different ports and migrate between nodes that way. Best, mike 'Like' us on Facebook for exclusive content and other resources on all Barr= acuda Networks solutions. Visit http://barracudanetworks.com/facebook -- Richard Low Acunu | http://www.acunu.com | @acunu 'Like' us on Facebook for exclusive content and other resources on all Barr= acuda Networks solutions.=0D Visit http://barracudanetworks.com/facebook=0D =0D --_000_CCEC9F0985B2mkjellmanbarracudacom_ Content-Type: text/html; charset="us-ascii" Content-Transfer-Encoding: quoted-printable
Awesome (and very welcom= ed news), what kind of failure conditions can we expect if a node goes down= during the migration?

From: Richard Low <rlow@= acunu.com>
Reply-To: "user@cassandra.apache.org" &= lt;user@cassandra.apache.org>
Date: Tuesday, December = 11, 2012 3:33 AM
To: "user@cassandra.apache.org" <user@cassandra.apache.org>= ;
Subject: Re: Vnode migration = path

Hi Mike,

There's also the shuffle utility (in the bin directory)= that can incrementally move ranges around to migrate to vnodes.
=
Richard.


On 11 December 2012 08:47, Michael Kjellman <mkjellman@= barracuda.com> wrote:
So I'm wondering if anyone has given thought to their migration path to Vno= des. Other than having a separate cluster and migrating the data from the o= ld cluster to the vnode cluster what else can we do.

One suggestion I've heard is start up a second Cassandra instance on each n= ode on different ports and migrate between nodes that way.

Best,
mike

'Like' us on Facebook for exclusive content and other resources on all Barr= acuda Networks solutions.

Visit h= ttp://barracudanetworks.com/facebook







--
Richard Low
Acunu | http://www.acunu= .com | @acunu

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