Return-Path: X-Original-To: apmail-mahout-dev-archive@www.apache.org Delivered-To: apmail-mahout-dev-archive@www.apache.org Received: from mail.apache.org (hermes.apache.org [140.211.11.3]) by minotaur.apache.org (Postfix) with SMTP id 7192317379 for ; Thu, 16 Oct 2014 00:49:49 +0000 (UTC) Received: (qmail 10838 invoked by uid 500); 16 Oct 2014 00:49:48 -0000 Delivered-To: apmail-mahout-dev-archive@mahout.apache.org Received: (qmail 10753 invoked by uid 500); 16 Oct 2014 00:49:48 -0000 Mailing-List: contact dev-help@mahout.apache.org; run by ezmlm Precedence: bulk List-Help: List-Unsubscribe: List-Post: List-Id: Reply-To: dev@mahout.apache.org Delivered-To: mailing list dev@mahout.apache.org Received: (qmail 10741 invoked by uid 99); 16 Oct 2014 00:49:48 -0000 Received: from nike.apache.org (HELO nike.apache.org) (192.87.106.230) by apache.org (qpsmtpd/0.29) with ESMTP; Thu, 16 Oct 2014 00:49:48 +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 (nike.apache.org: domain of dlieu.7@gmail.com designates 209.85.214.171 as permitted sender) Received: from [209.85.214.171] (HELO mail-ob0-f171.google.com) (209.85.214.171) by apache.org (qpsmtpd/0.29) with ESMTP; Thu, 16 Oct 2014 00:49:21 +0000 Received: by mail-ob0-f171.google.com with SMTP id va2so2047316obc.2 for ; Wed, 15 Oct 2014 17:49:20 -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=md8XD/85ghO2rD+lVWf6lp6smRFZmEMzVjYeHUVWMWI=; b=jFM3j1mXCaYjDQZzSMl6nrGw8mvmTLWmdlQP0M+2nryEUJlK+ECHijyVkc/9sKd4lZ vS1RbxX35E/7lm5t6VELfOjORas+1+gZ1WdJnwjE9uxeKwq6HbcM4r97+TAI6zY6XTSv +HjqGPYfbg8xuXr0fMBWg7XXbomXRGjpOBh1sEYrED3X+9QGa4Vd6gXHQhIOJYc5gBRs eOv4Zldbsa4LLiLc4VK47Wn4sxrbGQQPByLqHMG8QA4tKPrWZvJj5ANMrwaNxVOwP/K1 OIxaRTPrs3+3cRW+/qBlqvOzje+R+GMrOCuTV2A6BRTnAZomQSuZJlp9WN54q6xfm+f6 yx+A== MIME-Version: 1.0 X-Received: by 10.182.149.226 with SMTP id ud2mr13718088obb.31.1413420560551; Wed, 15 Oct 2014 17:49:20 -0700 (PDT) Received: by 10.76.122.112 with HTTP; Wed, 15 Oct 2014 17:49:20 -0700 (PDT) In-Reply-To: References: Date: Wed, 15 Oct 2014 17:49:20 -0700 Message-ID: Subject: Re: Why is mahout moving to spark? From: Dmitriy Lyubimov To: "dev@mahout.apache.org" Content-Type: multipart/alternative; boundary=001a11335ad66e178705057f9e92 X-Virus-Checked: Checked by ClamAV on apache.org --001a11335ad66e178705057f9e92 Content-Type: text/plain; charset=UTF-8 main reason is that MR is non-starter with most of moderately to highly iterative machine learning methods. Same can be said of Java. It is (strictly) my opinion that java is poorly fit to encode math, especially tensor math. On Wed, Oct 15, 2014 at 12:44 PM, thejas prasad wrote: > Hey all, > > I am curious why mahout is moving away from spark? I mean it is here "The > Mahout community decided to move its codebase onto modern data processing > systems that offer a richer programming model and more efficient execution > than Hadoop MapReduce." But why did this happen? > > And also is there a place I see all the previous emails, in the user/dev > list ? > > Thanks, > Thejas > --001a11335ad66e178705057f9e92--