Return-Path: Delivered-To: apmail-incubator-cassandra-user-archive@minotaur.apache.org Received: (qmail 47297 invoked from network); 28 Dec 2009 16:54:30 -0000 Received: from hermes.apache.org (HELO mail.apache.org) (140.211.11.3) by minotaur.apache.org with SMTP; 28 Dec 2009 16:54:30 -0000 Received: (qmail 41257 invoked by uid 500); 28 Dec 2009 16:54:30 -0000 Delivered-To: apmail-incubator-cassandra-user-archive@incubator.apache.org Received: (qmail 41209 invoked by uid 500); 28 Dec 2009 16:54:30 -0000 Mailing-List: contact cassandra-user-help@incubator.apache.org; run by ezmlm Precedence: bulk List-Help: List-Unsubscribe: List-Post: List-Id: Reply-To: cassandra-user@incubator.apache.org Delivered-To: mailing list cassandra-user@incubator.apache.org Received: (qmail 41200 invoked by uid 99); 28 Dec 2009 16:54:30 -0000 Received: from athena.apache.org (HELO athena.apache.org) (140.211.11.136) by apache.org (qpsmtpd/0.29) with ESMTP; Mon, 28 Dec 2009 16:54:30 +0000 X-ASF-Spam-Status: No, hits=-2.5 required=5.0 tests=AWL,BAYES_00,SUBJECT_FUZZY_TION X-Spam-Check-By: apache.org Received-SPF: pass (athena.apache.org: local policy) Received: from [209.85.217.227] (HELO mail-gx0-f227.google.com) (209.85.217.227) by apache.org (qpsmtpd/0.29) with ESMTP; Mon, 28 Dec 2009 16:54:22 +0000 Received: by gxk27 with SMTP id 27so10117795gxk.7 for ; Mon, 28 Dec 2009 08:54:01 -0800 (PST) Received: by 10.90.2.28 with SMTP id 28mr4079839agb.56.1262019240813; Mon, 28 Dec 2009 08:54:00 -0800 (PST) Received: from ?10.0.1.14? (c-67-176-95-143.hsd1.co.comcast.net [67.176.95.143]) by mx.google.com with ESMTPS id 23sm11066464iwn.11.2009.12.28.08.53.58 (version=TLSv1/SSLv3 cipher=RC4-MD5); Mon, 28 Dec 2009 08:53:59 -0800 (PST) Content-Type: text/plain; charset=us-ascii Mime-Version: 1.0 (Apple Message framework v1077) Subject: Re: Partition data - advantage and disadvantage From: Joe Stump In-Reply-To: <873a2vm48r.fsf@lifelogs.com> Date: Mon, 28 Dec 2009 09:53:56 -0700 Content-Transfer-Encoding: quoted-printable Message-Id: <4CCD40F9-8A32-46C6-8F6C-9005738A4AAA@joestump.net> References: <873a2vm48r.fsf@lifelogs.com> To: cassandra-user@incubator.apache.org X-Mailer: Apple Mail (2.1077) On Dec 28, 2009, at 9:51 AM, Ted Zlatanov wrote: > If each node does a key enumeration, can the results be aggregated > somehow? It seems useful to get a list of all the keys across the > cluster even if it's not 100% accurate. I didn't see discussions of > such a feature in JIRA or in the archives of this list. The results are aggregated AFAIK. If you do a key range and keys are on = 3 nodes it'll return a cohesive list. It's much more tricky to get a = list of ALL of the keys across the cluster. We've found that you need to = do many key ranges to enumerate over all of the keys in the cluster.=20 It's possible, just not wrapped in a simple function. --Joe