Return-Path: X-Original-To: apmail-hadoop-mapreduce-user-archive@minotaur.apache.org Delivered-To: apmail-hadoop-mapreduce-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 E78FC93AA for ; Fri, 13 Jan 2012 16:56:14 +0000 (UTC) Received: (qmail 87536 invoked by uid 500); 13 Jan 2012 16:56:13 -0000 Delivered-To: apmail-hadoop-mapreduce-user-archive@hadoop.apache.org Received: (qmail 87430 invoked by uid 500); 13 Jan 2012 16:56:12 -0000 Mailing-List: contact mapreduce-user-help@hadoop.apache.org; run by ezmlm Precedence: bulk List-Help: List-Unsubscribe: List-Post: List-Id: Reply-To: mapreduce-user@hadoop.apache.org Delivered-To: mailing list mapreduce-user@hadoop.apache.org Received: (qmail 87417 invoked by uid 99); 13 Jan 2012 16:56:12 -0000 Received: from athena.apache.org (HELO athena.apache.org) (140.211.11.136) by apache.org (qpsmtpd/0.29) with ESMTP; Fri, 13 Jan 2012 16:56:12 +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 (athena.apache.org: domain of bejoy.hadoop@gmail.com designates 209.85.216.48 as permitted sender) Received: from [209.85.216.48] (HELO mail-qw0-f48.google.com) (209.85.216.48) by apache.org (qpsmtpd/0.29) with ESMTP; Fri, 13 Jan 2012 16:56:06 +0000 Received: by qadz30 with SMTP id z30so1232555qad.14 for ; Fri, 13 Jan 2012 08:55:45 -0800 (PST) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=gamma; h=mime-version:in-reply-to:references:date:message-id:subject:from:to :content-type; bh=HYyxzUDCO6QB3WfxjD9A63InRnj51EHiJR24CVKJH2A=; b=DnKWvUXLhfeIFh/XflrteZFpiCpWD5onrUL5PSJOGZ5xCcZEVnemTKs2a/DuAKhs1x sz3qc5Sk3T9Sly/B15swmpanzsD8urKTN940bhLU3d6jsj0LItlUUNEZbPSzGZ+e4BGF 5ScsVlSL1Rsoc2WNZ1cxI/Dn6oO90/Mu1kY2g= MIME-Version: 1.0 Received: by 10.224.182.2 with SMTP id ca2mr2836931qab.57.1326473745116; Fri, 13 Jan 2012 08:55:45 -0800 (PST) Received: by 10.229.191.139 with HTTP; Fri, 13 Jan 2012 08:55:44 -0800 (PST) In-Reply-To: <8CEA01FA436929D-8B0-407A2@webmail-d003.sysops.aol.com> References: <8CEA01FA436929D-8B0-407A2@webmail-d003.sysops.aol.com> Date: Fri, 13 Jan 2012 22:25:44 +0530 Message-ID: Subject: Re: Newbie Question On Next Generation Map Reduce From: Bejoy Ks To: mapreduce-user@hadoop.apache.org Content-Type: multipart/alternative; boundary=20cf30363efd61afa704b66bbcce --20cf30363efd61afa704b66bbcce Content-Type: text/plain; charset=ISO-8859-1 HI AFAIK on a map reduce application developer perspective there won't be much changes. The APIs that you use are gonna be the same. This ensure that your existing map reduce applications can be deployed on Yarn based cluster without any code change. Regards Bejoy On Fri, Jan 13, 2012 at 9:02 PM, wrote: > I am learning Hadoop and had a question about writing Map Reduce jobs in > newer versions of Hadoop. > > Is Next Generation Map Reduce a change just for our system administrator > or do I (developer) already writing Map Reduce code have to start doing > things differently too (and is there a guide that explains the changes I > need to make)? > --20cf30363efd61afa704b66bbcce Content-Type: text/html; charset=ISO-8859-1 Content-Transfer-Encoding: quoted-printable HI
=A0 =A0 =A0AFAIK on a map reduce application developer=A0perspective= =A0there won't be much changes. The APIs that you use are gonna be the = same. =A0This ensure that your existing map reduce applications can be depl= oyed on Yarn based cluster without any code change.

Regards
Bejoy

On Fri, Jan 13, 2012 at 9:02 PM, <dbadave85@aol.com> wrote:
I am learning Hadoop and had a question about writing Map Reduc= e jobs in newer versions of Hadoop.=A0

Is Next Generation Map Reduce a change just for our system administrator or= do I (developer) already writing Map Reduce code have to start doing thing= s differently too (and is there a guide that explains the changes I need to= make)?

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