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 A08EFFAFC for ; Wed, 17 Apr 2013 04:54:18 +0000 (UTC) Received: (qmail 65776 invoked by uid 500); 17 Apr 2013 04:54:13 -0000 Delivered-To: apmail-hadoop-user-archive@hadoop.apache.org Received: (qmail 65678 invoked by uid 500); 17 Apr 2013 04:54:12 -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 65649 invoked by uid 99); 17 Apr 2013 04:54:10 -0000 Received: from nike.apache.org (HELO nike.apache.org) (192.87.106.230) by apache.org (qpsmtpd/0.29) with ESMTP; Wed, 17 Apr 2013 04:54:10 +0000 X-ASF-Spam-Status: No, hits=2.2 required=5.0 tests=HTML_MESSAGE,RCVD_IN_DNSWL_NONE,SPF_PASS X-Spam-Check-By: apache.org Received-SPF: pass (nike.apache.org: domain of liujin666jin@sina.com designates 60.28.2.156 as permitted sender) Received: from [60.28.2.156] (HELO smtp2911-211.mail.sina.com.cn) (60.28.2.156) by apache.org (qpsmtpd/0.29) with SMTP; Wed, 17 Apr 2013 04:54:03 +0000 Received: from unknown( HELO jin-PC)([61.135.255.86]) by sina.com with ESMTP 17 Apr 2013 12:53:40 +0800 (CST) X-Sender: liujin666jin@sina.com X-Auth-ID: liujin666jin@sina.com X-SMAIL-MID: 1728428668109 Date: Wed, 17 Apr 2013 12:53:37 +0800 From: rauljin To: "user@hadoop.apache.org" Reply-To: liujin666jin Subject: How to balance reduce job X-Priority: 3 X-Has-Attach: no X-Mailer: Foxmail 7.0.1.91[cn] Mime-Version: 1.0 Message-ID: <201304171253372469561@sina.com> Content-Type: multipart/alternative; boundary="----=_001_NextPart021067360726_=----" X-Virus-Checked: Checked by ClamAV on apache.org This is a multi-part message in MIME format. ------=_001_NextPart021067360726_=---- Content-Type: text/plain; charset="gb2312" Content-Transfer-Encoding: base64 OCBkYXRhbm9kZSBpbiBteSBoYWRvb3AgY2x1c2V0ZXIgLHdoZW4gcnVubmluZyByZWR1Y2Ugam9i LHRoZXJlIGlzIG9ubHkgMiBkYXRhbm9kZSBydW5uaW5nIHRoZSBqb2IgLg0KDQpJIHdhbnQgdG8g dXNlIHRoZSA4IGRhdGFub2RlIHRvIHJ1biB0aGUgcmVkdWNlIGpvYixzbyBJIGNhbiBiYWxhbmNl IHRoZSBJL08gcHJlc3MuDQoNCkFueSBpZGVhcz8NCg0KVGhhbmtzLg0KDQoNCg0KDQpyYXVsamlu ------=_001_NextPart021067360726_=---- Content-Type: text/html; charset="gb2312" Content-Transfer-Encoding: quoted-printable
8 datanode in my hadoop cluseter ,when running reduce job,there is on= ly 2=20 datanode running the job .
 
I want to use the 8 datanode to run the reduce job,so I can balance t= he I/O=20 press.
 
Any ideas?
 
Thanks.
 
rauljin
------=_001_NextPart021067360726_=------