Return-Path: X-Original-To: apmail-hadoop-user-archive@minotaur.apache.org Delivered-To: apmail-hadoop-user-archive@minotaur.apache.org Received: from mail.apache.org (hermes.apache.org [140.211.11.3]) by minotaur.apache.org (Postfix) with SMTP id A625C6BE for ; Fri, 24 Aug 2012 21:49:14 +0000 (UTC) Received: (qmail 44089 invoked by uid 500); 24 Aug 2012 21:49:09 -0000 Delivered-To: apmail-hadoop-user-archive@hadoop.apache.org Received: (qmail 44011 invoked by uid 500); 24 Aug 2012 21:49:09 -0000 Mailing-List: contact user-help@hadoop.apache.org; run by ezmlm Precedence: bulk List-Help: List-Unsubscribe: List-Post: List-Id: Reply-To: user@hadoop.apache.org Delivered-To: mailing list user@hadoop.apache.org Received: (qmail 44003 invoked by uid 99); 24 Aug 2012 21:49:09 -0000 Received: from athena.apache.org (HELO athena.apache.org) (140.211.11.136) by apache.org (qpsmtpd/0.29) with ESMTP; Fri, 24 Aug 2012 21:49:09 +0000 X-ASF-Spam-Status: No, hits=1.1 required=5.0 tests=NO_RDNS_DOTCOM_HELO,RCVD_IN_DNSWL_NONE,SPF_NEUTRAL X-Spam-Check-By: apache.org Received-SPF: neutral (athena.apache.org: 98.139.253.104 is neither permitted nor denied by domain of daryn@yahoo-inc.com) Received: from [98.139.253.104] (HELO mrout1-b.corp.bf1.yahoo.com) (98.139.253.104) by apache.org (qpsmtpd/0.29) with ESMTP; Fri, 24 Aug 2012 21:49:02 +0000 Received: from sp1-ex07cas01.ds.corp.yahoo.com (sp1-ex07cas01.ds.corp.yahoo.com [216.252.116.137]) by mrout1-b.corp.bf1.yahoo.com (8.14.4/8.14.4/y.out) with ESMTP id q7OLmIEV085085 for ; Fri, 24 Aug 2012 14:48:19 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=yahoo-inc.com; s=cobra; t=1345844899; bh=qZ4KQ6S8NgukWaI3eaqvmOBpBLMzo7aiYAi8ClRMSwE=; h=From:To:Date:Subject:Message-ID:References:In-Reply-To: Content-Type:Content-Transfer-Encoding:MIME-Version; b=b32gKBHb+YzH6RUJqL/Seu/7avCAdTbMhvpRGooTM0Zc6j80sE9M+24UCtLMIp52Y 7NS5HNzE0I/ITv0GHBwJxoVEr4phIV5y3x4uuvonQb4P6cu5DKb9s31Z2mZlNBADdD PRyCMrPGrKqBDj962BB1fglrWEdohAimGQjC1pHs= Received: from SP1-EX07VS02.ds.corp.yahoo.com ([216.252.116.135]) by sp1-ex07cas01.ds.corp.yahoo.com ([216.252.116.137]) with mapi; Fri, 24 Aug 2012 14:48:17 -0700 From: Daryn Sharp To: "user@hadoop.apache.org" Date: Fri, 24 Aug 2012 14:48:16 -0700 Subject: Re: easy mv or heavy mv Thread-Topic: easy mv or heavy mv Thread-Index: Ac2CQitsLCI7nuxESY2ICuWV/FnOPg== Message-ID: References: <5037D53E.4040206@gmail.com> In-Reply-To: <5037D53E.4040206@gmail.com> Accept-Language: en-US Content-Language: en-US X-MS-Has-Attach: X-MS-TNEF-Correlator: acceptlanguage: en-US Content-Type: text/plain; charset="iso-8859-1" Content-Transfer-Encoding: quoted-printable MIME-Version: 1.0 X-Milter-Version: master.31+4-gbc07cd5+ X-CLX-ID: 844898003 X-Virus-Checked: Checked by ClamAV on apache.org Yes, it just does a trivial update of the inodes (metainfo). Daryn On Aug 24, 2012, at 2:25 PM, Yue Guan wrote: > Hi, there >=20 > I'm just want to know that for hadoop dfs -mv. Does 'mv' just change the= =20 > meta info, or really copy data around on the hdfs? Thank you very much! >=20 > Thanks