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 1CE2B101AF for ; Fri, 6 Sep 2013 00:51:30 +0000 (UTC) Received: (qmail 12213 invoked by uid 500); 6 Sep 2013 00:51:25 -0000 Delivered-To: apmail-hadoop-mapreduce-user-archive@hadoop.apache.org Received: (qmail 12108 invoked by uid 500); 6 Sep 2013 00:51:25 -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 12101 invoked by uid 99); 6 Sep 2013 00:51:25 -0000 Received: from athena.apache.org (HELO athena.apache.org) (140.211.11.136) by apache.org (qpsmtpd/0.29) with ESMTP; Fri, 06 Sep 2013 00:51:25 +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 cembree@gmail.com designates 209.85.214.172 as permitted sender) Received: from [209.85.214.172] (HELO mail-ob0-f172.google.com) (209.85.214.172) by apache.org (qpsmtpd/0.29) with ESMTP; Fri, 06 Sep 2013 00:51:21 +0000 Received: by mail-ob0-f172.google.com with SMTP id er7so2805214obc.17 for ; Thu, 05 Sep 2013 17:51:00 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=20120113; h=mime-version:reply-to:in-reply-to:references:date:message-id :subject:from:to:content-type; bh=jsmtssxjbFG5nv1SpsrIhVL3mYo3mmoxRu5FcP/kbcU=; b=XZKBt+KLpKPDIthMqV9T8AEtlZ3RtNPm0kLaRxcMmV54NMeSoPaRE7QHZ1SJqQ3/tP vdIIRxZCs88Ms9rcvQK8CvXrMwg0t95dLl1hvAU+DWKqCO5YTFfASOZm9m29rXgXkbdt i62SL+U9QpQ6WxZ4lxQr5bqotzC9qiS544AaXwjgHseQTWLnOHl/EAKvJAGeGUkdYVH4 ZhLxNOtKVZ4dm58QnA6LqWlxFQVJ7O3wR01Wkjg6SsmI8JSK2bGOS9E5bNAiAMGvB51K adsAOvrJJKSuL3L/To8x4YjGgL29Pc7igBXaY2oN+YHIloRhoJfOr28yiy5xpwzUsP8I eUUw== MIME-Version: 1.0 X-Received: by 10.182.106.4 with SMTP id gq4mr8669943obb.4.1378428660202; Thu, 05 Sep 2013 17:51:00 -0700 (PDT) Received: by 10.76.96.105 with HTTP; Thu, 5 Sep 2013 17:51:00 -0700 (PDT) Reply-To: chris@embree.us In-Reply-To: <522924C9.70104@cse.ohio-state.edu> References: <522924C9.70104@cse.ohio-state.edu> Date: Thu, 5 Sep 2013 20:51:00 -0400 Message-ID: Subject: Re: How to speed up Hadoop? From: Chris Embree To: user@hadoop.apache.org Content-Type: multipart/alternative; boundary=e89a8fb1fa62a3c3ae04e5ac6eba X-Virus-Checked: Checked by ClamAV on apache.org --e89a8fb1fa62a3c3ae04e5ac6eba Content-Type: text/plain; charset=ISO-8859-1 I think you just went backwards. more replicas (generally speaking) are better. I'd take 60 cheap, 1 U servers over 20 "highly fault tolerant" ones for almost every problem. I'd get them for the same or less $ too. On Thu, Sep 5, 2013 at 8:41 PM, Sundeep Kambhampati < kambhamp@cse.ohio-state.edu> wrote: > Hi all, > > I am looking for ways to configure Hadoop inorder to speed up data > processing. Assuming all my nodes are highly fault tolerant, will making > data replication factor 1 speed up the processing? Are there some way to > disable failure monitoring done by Hadoop? > > Thank you for your time. > > -Sundeep > --e89a8fb1fa62a3c3ae04e5ac6eba Content-Type: text/html; charset=ISO-8859-1 Content-Transfer-Encoding: quoted-printable
I think you just went backwards. =A0 more replicas (genera= lly speaking) are better.

I'd take 60 cheap, 1= U servers over 20 "highly fault tolerant" ones for almost every = problem. =A0I'd get them for the same or less $ too.


=

On Thu, Sep 5, 2013 at 8:41 PM, Sundeep = Kambhampati <kambhamp@cse.ohio-state.edu> wrote:
Hi all,

=A0 =A0 I am looking for ways to configure Hadoop inorder to speed up data = processing. Assuming all my nodes are highly fault tolerant, will making da= ta replication factor 1 speed up the processing? Are there some way to disa= ble failure monitoring done by Hadoop?

Thank you for your time.

-Sundeep

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