Return-Path: X-Original-To: apmail-hbase-dev-archive@www.apache.org Delivered-To: apmail-hbase-dev-archive@www.apache.org Received: from mail.apache.org (hermes.apache.org [140.211.11.3]) by minotaur.apache.org (Postfix) with SMTP id 9CCBD10420 for ; Tue, 13 Jan 2015 22:18:19 +0000 (UTC) Received: (qmail 6955 invoked by uid 500); 13 Jan 2015 22:18:20 -0000 Delivered-To: apmail-hbase-dev-archive@hbase.apache.org Received: (qmail 6868 invoked by uid 500); 13 Jan 2015 22:18:20 -0000 Mailing-List: contact dev-help@hbase.apache.org; run by ezmlm Precedence: bulk List-Help: List-Unsubscribe: List-Post: List-Id: Reply-To: dev@hbase.apache.org Delivered-To: mailing list dev@hbase.apache.org Received: (qmail 6856 invoked by uid 99); 13 Jan 2015 22:18:20 -0000 Received: from athena.apache.org (HELO athena.apache.org) (140.211.11.136) by apache.org (qpsmtpd/0.29) with ESMTP; Tue, 13 Jan 2015 22:18:20 +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 (athena.apache.org: domain of yuzhihong@gmail.com designates 209.85.213.45 as permitted sender) Received: from [209.85.213.45] (HELO mail-yh0-f45.google.com) (209.85.213.45) by apache.org (qpsmtpd/0.29) with ESMTP; Tue, 13 Jan 2015 22:18:14 +0000 Received: by mail-yh0-f45.google.com with SMTP id f10so2827701yha.4 for ; Tue, 13 Jan 2015 14:16:23 -0800 (PST) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=20120113; h=mime-version:in-reply-to:references:date:message-id:subject:from:to :content-type; bh=1eyemX9orXh+2qgP4hcSOtqyXohCDG+D+s/PQGCgmJk=; b=pxWhqWrl4bkZfc3NZU8rwe1EPq7t50nvmkUcGpQ7oTeB/OTVJL03qBqekb1oGNIkym N66Ob4DdDWACzTW+c1lNrvW3jtjzZeEWXkMjmGyoZvKUA5TS4Y29ngikIyHNe9SR3eD5 GMAxf5Q3nvlINTDO4csky5kpQZVlPNOmrlW9gTrRx0XHybLYFjggTVHrmgWh5B05N4aC 0ebFvolyz7GJPkfr0wkdbHL7qpR3Boj3iyCEUX1gvNpR22VgY44QS9vepKyDG+TE6/KT F6QcHUgvRrzTS3vYZ+J/b+iir3O6YZ7O0uibySjUPuiNrsQde0CII5sUSDryiDUN5765 a8fA== MIME-Version: 1.0 X-Received: by 10.236.220.168 with SMTP id o38mr208734yhp.32.1421187383581; Tue, 13 Jan 2015 14:16:23 -0800 (PST) Received: by 10.170.139.4 with HTTP; Tue, 13 Jan 2015 14:16:23 -0800 (PST) In-Reply-To: References: Date: Tue, 13 Jan 2015 14:16:23 -0800 Message-ID: Subject: Re: regions per server From: Ted Yu To: "dev@hbase.apache.org" Content-Type: multipart/alternative; boundary=001a11c2be0c2862a3050c8ff91f X-Virus-Checked: Checked by ClamAV on apache.org --001a11c2be0c2862a3050c8ff91f Content-Type: text/plain; charset=UTF-8 Have you read http://hbase.apache.org/book.html#ops.capacity.regions.count ? Cheers On Tue, Jan 13, 2015 at 2:13 PM, Krishna wrote: > Hi, > > Current HBase cluster has close to 800 regions per RS with data uniformly > distributed across the nodes. could someone share their thoughts on > following options for efficiently decreasing # of regions/server? > > * Increase region file size from 10GB to 50 GB: What is the impact on > queries by increasing region size from 10GB to 50GB? Would query latency > increase 5 times? > * Add additional servers to the cluster: Why is [20-200] an ideal range for > number of regions per RS? Can a RS handle over 1000 regions? > > Best... > --001a11c2be0c2862a3050c8ff91f--