Return-Path: Delivered-To: apmail-cassandra-user-archive@www.apache.org Received: (qmail 79051 invoked from network); 23 Feb 2011 00:57:00 -0000 Received: from hermes.apache.org (HELO mail.apache.org) (140.211.11.3) by minotaur.apache.org with SMTP; 23 Feb 2011 00:57:00 -0000 Received: (qmail 50331 invoked by uid 500); 23 Feb 2011 00:56:59 -0000 Delivered-To: apmail-cassandra-user-archive@cassandra.apache.org Received: (qmail 50271 invoked by uid 500); 23 Feb 2011 00:56:58 -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 50263 invoked by uid 500); 23 Feb 2011 00:56:58 -0000 Delivered-To: apmail-incubator-cassandra-user@incubator.apache.org Received: (qmail 50259 invoked by uid 99); 23 Feb 2011 00:56:58 -0000 Received: from athena.apache.org (HELO athena.apache.org) (140.211.11.136) by apache.org (qpsmtpd/0.29) with ESMTP; Wed, 23 Feb 2011 00:56:58 +0000 X-ASF-Spam-Status: No, hits=2.0 required=5.0 tests=FREEMAIL_FROM,SPF_NEUTRAL,T_TO_NO_BRKTS_FREEMAIL,URI_HEX X-Spam-Check-By: apache.org Received-SPF: neutral (athena.apache.org: 216.139.236.26 is neither permitted nor denied by domain of mohitanchlia@gmail.com) Received: from [216.139.236.26] (HELO sam.nabble.com) (216.139.236.26) by apache.org (qpsmtpd/0.29) with ESMTP; Wed, 23 Feb 2011 00:56:53 +0000 Received: from jim.nabble.com ([192.168.236.80]) by sam.nabble.com with esmtp (Exim 4.69) (envelope-from ) id 1Ps31s-0007W4-HQ for cassandra-user@incubator.apache.org; Tue, 22 Feb 2011 16:56:32 -0800 Date: Tue, 22 Feb 2011 16:56:32 -0800 (PST) From: mcasandra To: cassandra-user@incubator.apache.org Message-ID: <1298422592527-6054767.post@n2.nabble.com> Subject: Performance tunning MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Transfer-Encoding: 7bit I have completed intial evaluation of cassandra. There are few things that I am still not comfortable with since I don't clearly understand them. Have couple of questions: 1) When developing large applications and designing the data model, keys etc what specifically are the things that one should consider when using Cassandra? 2) What things to monitor when doing stress test and what commands in particular to run? 3) Is there a nodetool command that gives the summary of cluster? nodetool command seem to return info for only one "host". I can write a script if there is no other way. 4) What's expected during hinted hand off and how to test this scenario? 5) How are keys hashed? this will help me find out which node it sits in. That's it for now :) -- View this message in context: http://cassandra-user-incubator-apache-org.3065146.n2.nabble.com/Performance-tunning-tp6054767p6054767.html Sent from the cassandra-user@incubator.apache.org mailing list archive at Nabble.com.