Return-Path: X-Original-To: apmail-mahout-user-archive@www.apache.org Delivered-To: apmail-mahout-user-archive@www.apache.org Received: from mail.apache.org (hermes.apache.org [140.211.11.3]) by minotaur.apache.org (Postfix) with SMTP id 107A04E77 for ; Fri, 1 Jul 2011 14:22:27 +0000 (UTC) Received: (qmail 2446 invoked by uid 500); 1 Jul 2011 14:22:25 -0000 Delivered-To: apmail-mahout-user-archive@mahout.apache.org Received: (qmail 2115 invoked by uid 500); 1 Jul 2011 14:22:24 -0000 Mailing-List: contact user-help@mahout.apache.org; run by ezmlm Precedence: bulk List-Help: List-Unsubscribe: List-Post: List-Id: Reply-To: user@mahout.apache.org Delivered-To: mailing list user@mahout.apache.org Received: (qmail 2099 invoked by uid 99); 1 Jul 2011 14:22:24 -0000 Received: from athena.apache.org (HELO athena.apache.org) (140.211.11.136) by apache.org (qpsmtpd/0.29) with ESMTP; Fri, 01 Jul 2011 14:22:24 +0000 X-ASF-Spam-Status: No, hits=-0.6 required=5.0 tests=FREEMAIL_ENVFROM_END_DIGIT,FREEMAIL_FROM,RCVD_IN_DNSWL_LOW,SPF_PASS,T_TO_NO_BRKTS_FREEMAIL X-Spam-Check-By: apache.org Received-SPF: pass (athena.apache.org: domain of guxiaobo1982@gmail.com designates 209.85.161.170 as permitted sender) Received: from [209.85.161.170] (HELO mail-gx0-f170.google.com) (209.85.161.170) by apache.org (qpsmtpd/0.29) with ESMTP; Fri, 01 Jul 2011 14:22:18 +0000 Received: by gxk27 with SMTP id 27so2454672gxk.1 for ; Fri, 01 Jul 2011 07:21:57 -0700 (PDT) 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 :cc:content-type; bh=Ez6krdZJ+K659fg/Mfhl0oD/EyaH/y44UOs72kw0gfc=; b=k7my2DFcTAYMDcnvLm8BMclfvKBTITqMqLuVWS43TjL8lNZnU752xtlsbj97OC5mY6 PfBJELOFrf9pmfLRXyHtxvradJmqOOqahLiG0MBkxN2/ts0rxxS5RIpCYJC6VE28Iv9X 7c0DMrmFewAs6qYUUn50qCqjZP6Cl5pKCyct0= MIME-Version: 1.0 Received: by 10.236.9.40 with SMTP id 28mr4402144yhs.136.1309530116896; Fri, 01 Jul 2011 07:21:56 -0700 (PDT) Received: by 10.236.199.105 with HTTP; Fri, 1 Jul 2011 07:21:56 -0700 (PDT) In-Reply-To: References: Date: Fri, 1 Jul 2011 22:21:56 +0800 Message-ID: Subject: Re: Hadoop version compatibility. From: Xiaobo Gu To: user@mahout.apache.org Cc: dev@mahout.apache.org Content-Type: text/plain; charset=ISO-8859-1 I mean mahout using the higher version of Hadoop libraries connecting to a lower version of Hadoop cluster. On Fri, Jul 1, 2011 at 8:42 PM, Sean Owen wrote: > Yes, it's still compatible. > > On Fri, Jul 1, 2011 at 1:35 PM, Xiaobo Gu wrote: >> Hi, >> >> Since the trunk of Mahout has moved to Hadoop 0.20.203, can we still >> let Mahout connect to a lower version of Hadoop backend, such as >> 0.20.2? >> >> Regards, >> >> Xiaobo Gu >> >