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 2C4E110498 for ; Thu, 22 Aug 2013 18:00:51 +0000 (UTC) Received: (qmail 11084 invoked by uid 500); 22 Aug 2013 18:00:48 -0000 Delivered-To: apmail-hbase-user-archive@hbase.apache.org Received: (qmail 10829 invoked by uid 500); 22 Aug 2013 18:00:48 -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 10820 invoked by uid 99); 22 Aug 2013 18:00:47 -0000 Received: from nike.apache.org (HELO nike.apache.org) (192.87.106.230) by apache.org (qpsmtpd/0.29) with ESMTP; Thu, 22 Aug 2013 18:00:47 +0000 X-ASF-Spam-Status: No, hits=-0.0 required=5.0 tests=SPF_PASS X-Spam-Check-By: apache.org Received-SPF: pass (nike.apache.org: domain of vrodionov@carrieriq.com designates 204.235.122.22 as permitted sender) Received: from [204.235.122.22] (HELO obmail.carrieriq.com) (204.235.122.22) by apache.org (qpsmtpd/0.29) with ESMTP; Thu, 22 Aug 2013 18:00:42 +0000 From: Vladimir Rodionov To: "user@hbase.apache.org" Date: Thu, 22 Aug 2013 10:58:15 -0700 Subject: RE: one column family but lots of tables Thread-Topic: one column family but lots of tables Thread-Index: Ac6fSVGjRRvwqnxmTvqOREFFNwz3nQAF9tnn Message-ID: References: In-Reply-To: Accept-Language: en-US Content-Language: en-US X-MS-Has-Attach: X-MS-TNEF-Correlator: acceptlanguage: en-US Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: quoted-printable MIME-Version: 1.0 X-Virus-Checked: Checked by ClamAV on apache.org Nope. Column family is per table (its sub-directory inside your table direc= tory in HDFS). If you have N tables you will always have , at least, N distinct CFs (even = if they have the same name). Best regards, Vladimir Rodionov Principal Platform Engineer Carrier IQ, www.carrieriq.com e-mail: vrodionov@carrieriq.com ________________________________________ From: Koert Kuipers [koert@tresata.com] Sent: Thursday, August 22, 2013 8:06 AM To: user@hbase.apache.org Subject: one column family but lots of tables i read in multiple places that i should try to limit the number of column families in hbase. do i understand it correctly that when i create lots of tables, but they all use the same column family (by name), that i am just using one column family and i am OK with respect to limiting number of column families ? thanks! koert Confidentiality Notice: The information contained in this message, includi= ng any attachments hereto, may be confidential and is intended to be read o= nly by the individual or entity to whom this message is addressed. If the r= eader of this message is not the intended recipient or an agent or designee= of the intended recipient, please note that any review, use, disclosure or= distribution of this message or its attachments, in any form, is strictly = prohibited. If you have received this message in error, please immediately= notify the sender and/or Notifications@carrieriq.com and delete or destroy= any copy of this message and its attachments.