Return-Path: X-Original-To: apmail-hadoop-user-archive@minotaur.apache.org Delivered-To: apmail-hadoop-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 24436D37A for ; Wed, 26 Sep 2012 13:19:59 +0000 (UTC) Received: (qmail 92906 invoked by uid 500); 26 Sep 2012 13:19:54 -0000 Delivered-To: apmail-hadoop-user-archive@hadoop.apache.org Received: (qmail 92144 invoked by uid 500); 26 Sep 2012 13:19:46 -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 92115 invoked by uid 99); 26 Sep 2012 13:19:45 -0000 Received: from athena.apache.org (HELO athena.apache.org) (140.211.11.136) by apache.org (qpsmtpd/0.29) with ESMTP; Wed, 26 Sep 2012 13:19:45 +0000 X-ASF-Spam-Status: No, hits=-0.0 required=5.0 tests=SPF_PASS X-Spam-Check-By: apache.org Received-SPF: pass (athena.apache.org: local policy) Received: from [213.133.104.83] (HELO www83.your-server.de) (213.133.104.83) by apache.org (qpsmtpd/0.29) with ESMTP; Wed, 26 Sep 2012 13:19:37 +0000 Received: from [62.217.45.26] (helo=[192.168.178.54]) by www83.your-server.de with esmtpa (Exim 4.74) (envelope-from ) id 1TGrWG-00076q-5N; Wed, 26 Sep 2012 15:19:16 +0200 Message-ID: <506300DE.1030606@swe-blog.net> Date: Wed, 26 Sep 2012 15:19:26 +0200 From: "Oliver B. Fischer" User-Agent: Mozilla/5.0 (X11; Linux x86_64; rv:15.0) Gecko/20120827 Thunderbird/15.0 MIME-Version: 1.0 To: user@hadoop.apache.org Subject: Programming Question / Joining Dataset Content-Type: text/plain; charset=ISO-8859-1; format=flowed Content-Transfer-Encoding: 7bit X-Authenticated-Sender: mailsink@swe-blog.net X-Virus-Scanned: Clear (ClamAV 0.97.3/15405/Wed Sep 26 07:20:50 2012) X-Virus-Checked: Checked by ClamAV on apache.org Hi all, I have to join to large datasets A and B. I preprocess both datasets by parsing the source text files and creating custom datatypes ADT and BDT out ouf it. Now I have to join theses data. Both databsets A' and B' already have the same datatype as key. But how can I pass both custom datatypes ADT and BDT to the same reducer instance for joining? Bye, Oliver