Return-Path: X-Original-To: apmail-hadoop-common-dev-archive@www.apache.org Delivered-To: apmail-hadoop-common-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 D0FBB104DF for ; Tue, 29 Oct 2013 05:24:57 +0000 (UTC) Received: (qmail 78404 invoked by uid 500); 29 Oct 2013 05:24:46 -0000 Delivered-To: apmail-hadoop-common-dev-archive@hadoop.apache.org Received: (qmail 78293 invoked by uid 500); 29 Oct 2013 05:24:42 -0000 Mailing-List: contact common-dev-help@hadoop.apache.org; run by ezmlm Precedence: bulk List-Help: List-Unsubscribe: List-Post: List-Id: Reply-To: common-dev@hadoop.apache.org Delivered-To: mailing list common-dev@hadoop.apache.org Received: (qmail 78281 invoked by uid 99); 29 Oct 2013 05:24:39 -0000 Received: from nike.apache.org (HELO nike.apache.org) (192.87.106.230) by apache.org (qpsmtpd/0.29) with ESMTP; Tue, 29 Oct 2013 05:24:39 +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 (nike.apache.org: domain of unmeshabiju@gmail.com designates 209.85.212.41 as permitted sender) Received: from [209.85.212.41] (HELO mail-vb0-f41.google.com) (209.85.212.41) by apache.org (qpsmtpd/0.29) with ESMTP; Tue, 29 Oct 2013 05:24:34 +0000 Received: by mail-vb0-f41.google.com with SMTP id w8so5243383vbj.14 for ; Mon, 28 Oct 2013 22:24:13 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=20120113; h=mime-version:date:message-id:subject:from:to:content-type; bh=8lSgRNq1KIqzhW+IPNCWZdRpZzFEJbZqC81MPWEoqpc=; b=ThUaw/WQSy1MB+C6/Bejh8dLEcpBdoD6aFOhvHTXKRamGml3/NkPXeqsuEcszRGQoh 8Ixh7TRKHgJFvWgcLL067aSi4fxgHPq6zwVZiwcFnsWEPyfBh+Kqxxxx0R337Onjj245 mfu+g9VSYS8caJAEN7TlXDiB3Lhy9PBq2R/kNO3czPa2IwSnua7voZ0JctDO2BZgxojV 3byucRwPc6IrGC1Z4N+xdXy9SuLyu20KvDS49wRMmKaz5x1zJrDCG/T0vYDfjwSTCJCf pcyWeKXVbFOYWNqAqFl9uads3V7iOtZu8kvZ+4DcB1ijfJ2uQC05KvaNNMNk8pFaxIn2 78RQ== MIME-Version: 1.0 X-Received: by 10.221.54.129 with SMTP id vu1mr4188302vcb.20.1383024252573; Mon, 28 Oct 2013 22:24:12 -0700 (PDT) Received: by 10.59.8.2 with HTTP; Mon, 28 Oct 2013 22:24:12 -0700 (PDT) Date: Tue, 29 Oct 2013 10:54:12 +0530 Message-ID: Subject: Issues in emitting 2D double array from mapper. From: unmesha sreeveni To: common-dev@hadoop.apache.org, general@hadoop.apache.org Content-Type: multipart/alternative; boundary=001a113387424a78f704e9da6d24 X-Virus-Checked: Checked by ClamAV on apache.org --001a113387424a78f704e9da6d24 Content-Type: text/plain; charset=ISO-8859-1 http://stackoverflow.com/questions/19602692/java-lang-classcastexception-in-hadoop-mapreduce I tried out, but it is not working. Can anyone suggest me a gud way for emitting two 2D double arrays as key and value from mapper and read those two arrays as key and value from reducer . http://mapreduce-tutorial.blogspot.in/2011/04/custom-data-types.html I have gone through this link.These r all new to me. how to override those methods in writable. -- *Thanks & Regards* * * Unmesha Sreeveni U.B* * *Junior Developer * *Amrita Center For Cyber Security * * Amritapuri. www.amrita.edu/cyber/ * --001a113387424a78f704e9da6d24--