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 E3F94DD31 for ; Thu, 23 Aug 2012 13:37:43 +0000 (UTC) Received: (qmail 10544 invoked by uid 500); 23 Aug 2012 13:37:42 -0000 Delivered-To: apmail-hadoop-mapreduce-user-archive@hadoop.apache.org Received: (qmail 10437 invoked by uid 500); 23 Aug 2012 13:37:42 -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 10425 invoked by uid 99); 23 Aug 2012 13:37:42 -0000 Received: from athena.apache.org (HELO athena.apache.org) (140.211.11.136) by apache.org (qpsmtpd/0.29) with ESMTP; Thu, 23 Aug 2012 13:37:42 +0000 X-ASF-Spam-Status: No, hits=1.7 required=5.0 tests=FREEMAIL_ENVFROM_END_DIGIT,HTML_MESSAGE,RCVD_IN_DNSWL_LOW,SPF_PASS X-Spam-Check-By: apache.org Received-SPF: pass (athena.apache.org: domain of sonalgoyal4@gmail.com designates 74.125.82.48 as permitted sender) Received: from [74.125.82.48] (HELO mail-wg0-f48.google.com) (74.125.82.48) by apache.org (qpsmtpd/0.29) with ESMTP; Thu, 23 Aug 2012 13:37:38 +0000 Received: by wgbdq11 with SMTP id dq11so513258wgb.29 for ; Thu, 23 Aug 2012 06:37:17 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=20120113; h=mime-version:in-reply-to:references:date:message-id:subject:from:to :content-type; bh=zppGvUKEzq0UTbvJEPbm8oz/Jekcp9yvSW6utJIKfxY=; b=Gex5x14TxQsoMQ7ed7y3ecCHRn4TJXdyQi0z3jOozWBn4E1TNdX86vUE23ApJsKJt7 G18/ePXb9OKA9vHidwEtezGxnXydd7yOP/9XZr2HdOlqcly70/xFfcY9Aio/3/tyNlhf PtpJ5SiHDghn3TyL4Auq8X/yQyT4Jczf8b3LrhZkALXNrcRwMC8w2TGX8a4zo30joahC aKXp4ybf2iccdpWng4QQreR1sQC0q6v4CvpAixUhIyQp5BpNC/N6wAbgK1nQl02iFSAD vVWF/HjDuxIomEIWCkKbywhUWfmwFzITB4EtcqgxtzSQjKu4MFThUWhp6sNG+A4a4tII qt8g== MIME-Version: 1.0 Received: by 10.180.106.97 with SMTP id gt1mr15104847wib.5.1345729036989; Thu, 23 Aug 2012 06:37:16 -0700 (PDT) Received: by 10.223.85.149 with HTTP; Thu, 23 Aug 2012 06:37:16 -0700 (PDT) In-Reply-To: References: Date: Thu, 23 Aug 2012 19:07:16 +0530 Message-ID: Subject: Re: Sending data to all reducers From: Sonal Goyal To: mapreduce-user@hadoop.apache.org Content-Type: multipart/alternative; boundary=f46d0442806636b63704c7eef553 X-Virus-Checked: Checked by ClamAV on apache.org --f46d0442806636b63704c7eef553 Content-Type: text/plain; charset=ISO-8859-1 Hamid, I would recommend taking a relook at your current algorithm and making sure you are utilizing the MR framework to its strengths. You can evaluate having multiple passes for your map reduce program, or doing a map side join. You mention runtime is important for your system, so make sure you preserve data locality in the generated tasks. HTH. Best Regards, Sonal Crux: Reporting for HBase Nube Technologies On Thu, Aug 23, 2012 at 6:50 PM, Hamid Oliaei wrote: > Hi, > > I take a look to that, hope it can be useful for my purpose. > > Thank you so much. > > Hamid > > > --f46d0442806636b63704c7eef553 Content-Type: text/html; charset=ISO-8859-1 Content-Transfer-Encoding: quoted-printable Hamid,

I would recommend taking a relook at your current= algorithm and making sure you are utilizing the MR framework to its streng= ths. You can evaluate having multiple passes for your map reduce program, o= r doing a map side join. You mention runtime is important for your system, = so make sure you preserve data locality in the generated tasks.=A0

HTH.

Best Regards,
Sonal=
Crux: Reporting f= or HBase
Nube Technologies






On Thu, Aug 23, 2012 at 6:50 PM, Hamid O= liaei <oliaei@gmail.com> wrote:
Hi,

I take a look to that, hope it can be useful f= or my purpose.

Thank you so much.

Hamid



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