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 94C91109AE for ; Wed, 4 Jun 2014 20:50:22 +0000 (UTC) Received: (qmail 77216 invoked by uid 500); 4 Jun 2014 20:50:19 -0000 Delivered-To: apmail-cassandra-user-archive@cassandra.apache.org Received: (qmail 77180 invoked by uid 500); 4 Jun 2014 20:50:19 -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 77172 invoked by uid 99); 4 Jun 2014 20:50:19 -0000 Received: from nike.apache.org (HELO nike.apache.org) (192.87.106.230) by apache.org (qpsmtpd/0.29) with ESMTP; Wed, 04 Jun 2014 20:50:19 +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 rcoli@eventbrite.com designates 209.85.220.171 as permitted sender) Received: from [209.85.220.171] (HELO mail-vc0-f171.google.com) (209.85.220.171) by apache.org (qpsmtpd/0.29) with ESMTP; Wed, 04 Jun 2014 20:50:16 +0000 Received: by mail-vc0-f171.google.com with SMTP id ij19so69051vcb.16 for ; Wed, 04 Jun 2014 13:49:52 -0700 (PDT) X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20130820; h=x-gm-message-state:mime-version:in-reply-to:references:date :message-id:subject:from:to:content-type; bh=Z6hSbKKcTbjQevFNJiwsvy+80c7HhHTyirvKrHK1TSI=; b=EWSnQH40CK39GPJTSW3Zmdl5Ov04Granyja2piZnED/6jFFK2Fr8LcGOLYTxx+jKU+ fj2e2FKXe/sDfPSTrWN8cToeP99QrCWSy/QwDR/kPBsn7eiiwuzab4MFZPjExjFd3Qmd HcZi3723UYSKkowqp2IwNLkCgS2q5F5vZcsihG5pOvjUq5dORZF0sMrlYM572+Pwyiy8 hmH2zTONK/wwqJVQ/xJtUzSo8dNbPc+zy9g+QaQNlyrn1GNGoRMLl/T+g9gt78vaFHEq 0FXwfhEkzJ85IVwd6FLpecx8NkU2rkfsBqwx7F+84uK+Ebpjyep4iQ3uhKpn8G7nMjvY xRXg== X-Gm-Message-State: ALoCoQlxVgs8wOaOyW94POP+P8O3xYvftsfVXFym46jKVvTFjrZBUGRq9BsWufM6IC47FrYYavM6 MIME-Version: 1.0 X-Received: by 10.220.182.5 with SMTP id ca5mr5524499vcb.50.1401914991945; Wed, 04 Jun 2014 13:49:51 -0700 (PDT) Received: by 10.220.155.11 with HTTP; Wed, 4 Jun 2014 13:49:51 -0700 (PDT) In-Reply-To: References: Date: Wed, 4 Jun 2014 13:49:51 -0700 Message-ID: Subject: Re: Snapshot the data with 3 node and replicationfactor=3 From: Robert Coli To: "user@cassandra.apache.org" Content-Type: multipart/alternative; boundary=001a1133d7ea19d35004fb08c5db X-Virus-Checked: Checked by ClamAV on apache.org --001a1133d7ea19d35004fb08c5db Content-Type: text/plain; charset=UTF-8 On Wed, Jun 4, 2014 at 1:26 PM, ng wrote: > Is there any reason you would like to take snapshot of column family on > each node when cluster consists of 3 nodes with keyspace on replication > factor =3? > Unless all read/write occurs with CL.ALL (which is an availability problem), there is a nonzero chance of any given write not being on any given node at any given time. =Rob --001a1133d7ea19d35004fb08c5db Content-Type: text/html; charset=UTF-8 Content-Transfer-Encoding: quoted-printable
On W= ed, Jun 4, 2014 at 1:26 PM, ng <pipelines@gmail.com> wrote= :
Is there any reason you would like to take snapshot o= f column family on each node when cluster consists of 3 nodes with keyspace= on replication factor =3D3?

Unless all read/write occurs with CL.ALL (which is an availability problem)= , there is a nonzero chance of any given write not being on any given node = at any given time.

=3DRob

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