Return-Path: Delivered-To: apmail-hadoop-hive-dev-archive@minotaur.apache.org Received: (qmail 28537 invoked from network); 6 Oct 2010 17:30:52 -0000 Received: from unknown (HELO mail.apache.org) (140.211.11.3) by 140.211.11.9 with SMTP; 6 Oct 2010 17:30:52 -0000 Received: (qmail 44558 invoked by uid 500); 6 Oct 2010 17:30:52 -0000 Delivered-To: apmail-hadoop-hive-dev-archive@hadoop.apache.org Received: (qmail 44512 invoked by uid 500); 6 Oct 2010 17:30:52 -0000 Mailing-List: contact hive-dev-help@hadoop.apache.org; run by ezmlm Precedence: bulk List-Help: List-Unsubscribe: List-Post: List-Id: Reply-To: hive-dev@hadoop.apache.org Delivered-To: mailing list hive-dev@hadoop.apache.org Received: (qmail 44504 invoked by uid 99); 6 Oct 2010 17:30:52 -0000 Received: from athena.apache.org (HELO athena.apache.org) (140.211.11.136) by apache.org (qpsmtpd/0.29) with ESMTP; Wed, 06 Oct 2010 17:30:52 +0000 X-ASF-Spam-Status: No, hits=-2000.0 required=10.0 tests=ALL_TRUSTED X-Spam-Check-By: apache.org Received: from [140.211.11.22] (HELO thor.apache.org) (140.211.11.22) by apache.org (qpsmtpd/0.29) with ESMTP; Wed, 06 Oct 2010 17:30:51 +0000 Received: from thor (localhost [127.0.0.1]) by thor.apache.org (8.13.8+Sun/8.13.8) with ESMTP id o96HUVHE010480 for ; Wed, 6 Oct 2010 17:30:31 GMT Message-ID: <7789764.10691286386231181.JavaMail.jira@thor> Date: Wed, 6 Oct 2010 13:30:31 -0400 (EDT) From: "Namit Jain (JIRA)" To: hive-dev@hadoop.apache.org Subject: [jira] Commented: (HIVE-1695) MapJoin followed by ReduceSink should be done as single MapReduce Job In-Reply-To: <27658492.5001286365471239.JavaMail.jira@thor> MIME-Version: 1.0 Content-Type: text/plain; charset=utf-8 Content-Transfer-Encoding: 7bit X-JIRA-FingerPrint: 30527f35849b9dde25b450d4833f0394 [ https://issues.apache.org/jira/browse/HIVE-1695?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=12918603#action_12918603 ] Namit Jain commented on HIVE-1695: ---------------------------------- This would be a very useful optimization > MapJoin followed by ReduceSink should be done as single MapReduce Job > --------------------------------------------------------------------- > > Key: HIVE-1695 > URL: https://issues.apache.org/jira/browse/HIVE-1695 > Project: Hadoop Hive > Issue Type: Improvement > Components: Query Processor > Reporter: Amareshwari Sriramadasu > > Currently MapJoin followed by ReduceSink runs as two MapReduce jobs : One map only job followed by a Map-Reduce job. It can be combined into single MapReduce Job. -- This message is automatically generated by JIRA. - You can reply to this email to add a comment to the issue online.