Return-Path: Delivered-To: apmail-lucene-hadoop-user-archive@locus.apache.org Received: (qmail 13596 invoked from network); 6 Apr 2006 18:58:34 -0000 Received: from hermes.apache.org (HELO mail.apache.org) (209.237.227.199) by minotaur.apache.org with SMTP; 6 Apr 2006 18:58:34 -0000 Received: (qmail 64008 invoked by uid 500); 6 Apr 2006 18:58:32 -0000 Delivered-To: apmail-lucene-hadoop-user-archive@lucene.apache.org Received: (qmail 63986 invoked by uid 500); 6 Apr 2006 18:58:31 -0000 Mailing-List: contact hadoop-user-help@lucene.apache.org; run by ezmlm Precedence: bulk List-Help: List-Unsubscribe: List-Post: List-Id: Reply-To: hadoop-user@lucene.apache.org Delivered-To: mailing list hadoop-user@lucene.apache.org Received: (qmail 63977 invoked by uid 99); 6 Apr 2006 18:58:31 -0000 Received: from asf.osuosl.org (HELO asf.osuosl.org) (140.211.166.49) by apache.org (qpsmtpd/0.29) with ESMTP; Thu, 06 Apr 2006 11:58:31 -0700 X-ASF-Spam-Status: No, hits=0.0 required=10.0 tests= X-Spam-Check-By: apache.org Received-SPF: neutral (asf.osuosl.org: local policy) Received: from [207.115.57.60] (HELO ylpvm29.prodigy.net) (207.115.57.60) by apache.org (qpsmtpd/0.29) with ESMTP; Thu, 06 Apr 2006 11:58:31 -0700 Received: from pimout4-ext.prodigy.net (pimout4-int.prodigy.net [207.115.4.203]) by ylpvm29.prodigy.net (8.12.10 outbound/8.12.10) with ESMTP id k36IvTbk001956 for ; Thu, 6 Apr 2006 14:57:31 -0400 X-ORBL: [69.228.204.183] Received: from [127.0.0.1] (adsl-69-228-204-183.dsl.pltn13.pacbell.net [69.228.204.183]) by pimout4-ext.prodigy.net (8.13.4 outbound domainkey aix/8.13.4) with ESMTP id k36Ivwe9235714; Thu, 6 Apr 2006 14:58:02 -0400 Message-ID: <443564B3.8010803@apache.org> Date: Thu, 06 Apr 2006 11:57:55 -0700 From: Doug Cutting User-Agent: Thunderbird 1.5 (Windows/20051201) MIME-Version: 1.0 To: hadoop-user@lucene.apache.org Subject: Re: Purpose of Job.jar References: <000301c65995$b9af9950$fc01a8c0@bigfly> In-Reply-To: <000301c65995$b9af9950$fc01a8c0@bigfly> Content-Type: text/plain; charset=ISO-8859-1; format=flowed Content-Transfer-Encoding: 7bit X-Virus-Checked: Checked by ClamAV on apache.org X-Spam-Rating: minotaur.apache.org 1.6.2 0/1000/N ennis Kubes wrote: > I keep seeing references to job.jar files. Can someone explain what the > job.jar files are and are they only used in distributed mode? They are only required for distributed operation. They permit a job to provide code that is not installed on all nodes. In general, user map and reduce code is packaged in a job.jar. Doug