Return-Path: Delivered-To: apmail-hadoop-general-archive@minotaur.apache.org Received: (qmail 13571 invoked from network); 18 Jan 2011 03:44:45 -0000 Received: from hermes.apache.org (HELO mail.apache.org) (140.211.11.3) by minotaur.apache.org with SMTP; 18 Jan 2011 03:44:45 -0000 Received: (qmail 68834 invoked by uid 500); 18 Jan 2011 03:44:43 -0000 Delivered-To: apmail-hadoop-general-archive@hadoop.apache.org Received: (qmail 68541 invoked by uid 500); 18 Jan 2011 03:44:40 -0000 Mailing-List: contact general-help@hadoop.apache.org; run by ezmlm Precedence: bulk List-Help: List-Unsubscribe: List-Post: List-Id: Reply-To: general@hadoop.apache.org Delivered-To: mailing list general@hadoop.apache.org Received: (qmail 68533 invoked by uid 99); 18 Jan 2011 03:44:39 -0000 Received: from nike.apache.org (HELO nike.apache.org) (192.87.106.230) by apache.org (qpsmtpd/0.29) with ESMTP; Tue, 18 Jan 2011 03:44:39 +0000 X-ASF-Spam-Status: No, hits=-0.7 required=10.0 tests=FREEMAIL_FROM,RCVD_IN_DNSWL_LOW,SPF_PASS,T_TO_NO_BRKTS_FREEMAIL X-Spam-Check-By: apache.org Received-SPF: pass (nike.apache.org: domain of qwertymaniac@gmail.com designates 209.85.161.48 as permitted sender) Received: from [209.85.161.48] (HELO mail-fx0-f48.google.com) (209.85.161.48) by apache.org (qpsmtpd/0.29) with ESMTP; Tue, 18 Jan 2011 03:44:33 +0000 Received: by fxm2 with SMTP id 2so7140075fxm.35 for ; Mon, 17 Jan 2011 19:44:12 -0800 (PST) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=gamma; h=domainkey-signature:mime-version:in-reply-to:references:from:date :message-id:subject:to:content-type:content-transfer-encoding; bh=PZn3Sh60UfP7fy11nhcje06Q06yI+VyLoupH+orP1zE=; b=nQSvY5RK+s2Xrh3OZotc2SjZ95IaRp0uZ4ZXVjqVlIqa7suoL6aDaWLq0IK0dNetdJ ZyfUYIC5lPQI35juGnnyPPCsrh1NHjL2BBIN/WaYlJsUt1unjQ/fVw782jZpwGDEyx8M qLR/x5cntAM2Wm4q6QzXU7SQkXVtyk1CVrXJg= DomainKey-Signature: a=rsa-sha1; c=nofws; d=gmail.com; s=gamma; h=mime-version:in-reply-to:references:from:date:message-id:subject:to :content-type:content-transfer-encoding; b=FL/9tTfgiJcmVh36W9GcthQPC1fXgsGM043xPN1qV/1aH59lzbwj+5bu0ZTukGeUBU oPuuKOMCrkBY3src2187i2wnSMPHHgjaePlsgztbkI02updeyc/4oLso9rogo1hz67UZ FedFWoKpv34cpuBNtWpCC4hACHf63OoDhwOFs= Received: by 10.223.85.203 with SMTP id p11mr5576074fal.108.1295322252702; Mon, 17 Jan 2011 19:44:12 -0800 (PST) MIME-Version: 1.0 Received: by 10.223.124.200 with HTTP; Mon, 17 Jan 2011 19:43:52 -0800 (PST) In-Reply-To: References: From: Harsh J Date: Tue, 18 Jan 2011 09:13:52 +0530 Message-ID: Subject: Re: how to know which partition data the reduce receive To: general@hadoop.apache.org Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: quoted-printable X-Virus-Checked: Checked by ClamAV on apache.org The emitted Partition Number =3D=3D Reducers' ID. 2011/1/18 lei liu : > There is job that has three reduce tasks that is the map output data > are divided > into three partition, how can I know every reduce receive which partitio= n=EF=BC=9F > --=20 Harsh J www.harshj.com