Return-Path: X-Original-To: apmail-hbase-user-archive@www.apache.org Delivered-To: apmail-hbase-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 E2592FA35 for ; Wed, 3 Apr 2013 13:55:29 +0000 (UTC) Received: (qmail 42428 invoked by uid 500); 3 Apr 2013 13:55:27 -0000 Delivered-To: apmail-hbase-user-archive@hbase.apache.org Received: (qmail 42140 invoked by uid 500); 3 Apr 2013 13:55:27 -0000 Mailing-List: contact user-help@hbase.apache.org; run by ezmlm Precedence: bulk List-Help: List-Unsubscribe: List-Post: List-Id: Reply-To: user@hbase.apache.org Delivered-To: mailing list user@hbase.apache.org Received: (qmail 42122 invoked by uid 99); 3 Apr 2013 13:55:27 -0000 Received: from nike.apache.org (HELO nike.apache.org) (192.87.106.230) by apache.org (qpsmtpd/0.29) with ESMTP; Wed, 03 Apr 2013 13:55:27 +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 yuzhihong@gmail.com designates 209.85.217.173 as permitted sender) Received: from [209.85.217.173] (HELO mail-lb0-f173.google.com) (209.85.217.173) by apache.org (qpsmtpd/0.29) with ESMTP; Wed, 03 Apr 2013 13:55:21 +0000 Received: by mail-lb0-f173.google.com with SMTP id w20so1599248lbh.4 for ; Wed, 03 Apr 2013 06:55:00 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=20120113; h=mime-version:x-received:in-reply-to:references:date:message-id :subject:from:to:content-type; bh=Ax+hbhtd2ysY8C79xZoRKu5qh5xAlWq4QTYDU4gZj/E=; b=wvaWKA6Nm25sS8i3hF3MNucSrzMeN6vs6uLPAS3SHaF8fveB20hey8XT5YePshi3NH ZJNSW9JNYm9xc/MJbLwXxpnxI+7VhIw5i1uXxYHTyBxfRKBUw5hmO4Djd+ae2GQ6xPyN I8bq8PzRlSBhcK1eZCWKXgDUJLmZkgYxPpO5j3Ub3iB1DDICyvw//Fua7JmgKLHiaKxH wyxPwDhyyXSZYVKeGFFj8E5n5nc6bOGWLiuKyGbbeOaKR76meeXIRxgejgC4hscPi+lW 8tcj5+vk7LWev2vA56SdbSFI4DorGyrTq+/pNvWRVIf+pCWrHQZxrKNaJALyqh007lJM rcFQ== MIME-Version: 1.0 X-Received: by 10.112.155.9 with SMTP id vs9mr1188965lbb.6.1364997300580; Wed, 03 Apr 2013 06:55:00 -0700 (PDT) Received: by 10.112.84.133 with HTTP; Wed, 3 Apr 2013 06:55:00 -0700 (PDT) In-Reply-To: <198BB82D-110F-4A60-99A0-FAB937C503FA@gmail.com> References: <198BB82D-110F-4A60-99A0-FAB937C503FA@gmail.com> Date: Wed, 3 Apr 2013 06:55:00 -0700 Message-ID: Subject: Re: should i use compression? From: Ted Yu To: "user@hbase.apache.org" Content-Type: multipart/alternative; boundary=089e0112c00e38781004d97533b3 X-Virus-Checked: Checked by ClamAV on apache.org --089e0112c00e38781004d97533b3 Content-Type: text/plain; charset=ISO-8859-1 You should use data block encoding (in 0.94.x releases only). It is helpful for reads. You can also enable compression. Cheers On Wed, Apr 3, 2013 at 6:42 AM, Prakash Kadel wrote: > Hello, > I have a question. > I have a table where i store data in the column qualifiers(the values > itself are null). > I just have 1 column family. > The number of columns per row is variable (1~ few thousands) > > Currently i don't use compression or the data_block_encoding. > > Should i? > I want to have faster reads. > > Please suggest. > > > Sincerely, > Prakash Kadel --089e0112c00e38781004d97533b3--