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 8C820D0EC for ; Tue, 16 Oct 2012 17:15:45 +0000 (UTC) Received: (qmail 37292 invoked by uid 500); 16 Oct 2012 17:15:43 -0000 Delivered-To: apmail-cassandra-user-archive@cassandra.apache.org Received: (qmail 37267 invoked by uid 500); 16 Oct 2012 17:15:43 -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 37257 invoked by uid 99); 16 Oct 2012 17:15:43 -0000 Received: from nike.apache.org (HELO nike.apache.org) (192.87.106.230) by apache.org (qpsmtpd/0.29) with ESMTP; Tue, 16 Oct 2012 17:15:43 +0000 X-ASF-Spam-Status: No, hits=-2.3 required=5.0 tests=RCVD_IN_DNSWL_MED,SPF_PASS X-Spam-Check-By: apache.org Received-SPF: pass (nike.apache.org: domain of btv1==636b2221f31==mkjellman@barracuda.com designates 64.235.145.84 as permitted sender) Received: from [64.235.145.84] (HELO bsf04.barracuda.com) (64.235.145.84) by apache.org (qpsmtpd/0.29) with ESMTP; Tue, 16 Oct 2012 17:15:37 +0000 X-ASG-Debug-ID: 1350407705-03dc64413727340002-f7dORa Received: from bn-scl-fe06.Cudanet.local (bn-scl-fe06.cudanet.local [10.8.1.48]) by bsf04.barracuda.com with ESMTP id OKb3opmZfmszpGlk (version=TLSv1 cipher=AES128-SHA bits=128 verify=NO) for ; Tue, 16 Oct 2012 10:15:08 -0700 (PDT) X-Barracuda-Envelope-From: mkjellman@barracuda.com Received: from bn-scl-be03.Cudanet.local (10.8.1.54) by bn-scl-fe06.Cudanet.local (10.8.1.48) with Microsoft SMTP Server (TLS) id 8.3.279.1; Tue, 16 Oct 2012 10:15:06 -0700 Received: from bn-scl-be03.Cudanet.local ([::1]) by bn-scl-be03.Cudanet.local ([::1]) with mapi; Tue, 16 Oct 2012 10:15:06 -0700 From: Michael Kjellman X-Barracuda-Apparent-Source-IP: ::1 To: "user@cassandra.apache.org" Date: Tue, 16 Oct 2012 10:15:04 -0700 Subject: Re: what happens while node is bootstrapping? Thread-Topic: what happens while node is bootstrapping? X-ASG-Orig-Subj: Re: what happens while node is bootstrapping? Thread-Index: Ac2rwckOSl0xzNuUSYCTAp+dU3lItQ== 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/14.2.3.120616 acceptlanguage: en-US Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: quoted-printable MIME-Version: 1.0 X-Barracuda-Connect: bn-scl-fe06.cudanet.local[10.8.1.48] X-Barracuda-Start-Time: 1350407705 X-Barracuda-Encrypted: AES128-SHA X-Barracuda-URL: http://bsf04.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: 0.14 X-Barracuda-Spam-Status: No, SCORE=0.14 using per-user scores of TAG_LEVEL=1000.0 QUARANTINE_LEVEL=1000.0 KILL_LEVEL=9.0 tests=BSF_SPF_SOFTFAIL, CN_BODY_332, THREAD_INDEX, THREAD_TOPIC X-Barracuda-Spam-Report: Code version 3.2, rules version 3.2.2.111517 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 BSF_SPF_SOFTFAIL Custom Rule SPF Softfail X-Virus-Checked: Checked by ClamAV on apache.org Correct. Also, there is a new feature in 1.1+ that lets you play with live traffic on new nodes before they actually join the ring http://www.datastax.com/dev/blog/whats-new-in-cassandra-1-1-live-traffic-sa mpling On 10/16/12 9:42 AM, "Andrey Ilinykh" wrote: >> >> >> No. The bootstrapping node will writes for its new range while >> bootstrapping as consistency optimization (more or less), but does not >> contribute to the replication factor or consistency level; all of the >> original replicas for that range still receive writes, serve reads, and >>are >> the nodes that count for consistency level. Basically, the >>bootstrapping >> node has no effect on the existing replicas in terms of RF or CL until >>the >> bootstrap completes. >> >I see. So, if I add new nodes to increase number of writes my cluster >can handle I will not see any improvement until bootstrap process >finished, which may take hours. Is it correct? > >Thank you, > Andrey 'Like' us on Facebook for exclusive content and other resources on all Barr= acuda Networks solutions.=0D Visit http://barracudanetworks.com/facebook=0D =0D