Return-Path: X-Original-To: apmail-hive-dev-archive@www.apache.org Delivered-To: apmail-hive-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 0490EE65A for ; Tue, 5 Feb 2013 09:24:18 +0000 (UTC) Received: (qmail 79809 invoked by uid 500); 5 Feb 2013 09:24:16 -0000 Delivered-To: apmail-hive-dev-archive@hive.apache.org Received: (qmail 79751 invoked by uid 500); 5 Feb 2013 09:24:16 -0000 Mailing-List: contact dev-help@hive.apache.org; run by ezmlm Precedence: bulk List-Help: List-Unsubscribe: List-Post: List-Id: Reply-To: dev@hive.apache.org Delivered-To: mailing list dev@hive.apache.org Received: (qmail 79743 invoked by uid 500); 5 Feb 2013 09:24:16 -0000 Delivered-To: apmail-hadoop-hive-dev@hadoop.apache.org Received: (qmail 79525 invoked by uid 99); 5 Feb 2013 09:24:16 -0000 Received: from arcas.apache.org (HELO arcas.apache.org) (140.211.11.28) by apache.org (qpsmtpd/0.29) with ESMTP; Tue, 05 Feb 2013 09:24:16 +0000 Date: Tue, 5 Feb 2013 09:24:16 +0000 (UTC) From: "Phabricator (JIRA)" To: hive-dev@hadoop.apache.org Message-ID: In-Reply-To: References: Subject: [jira] [Commented] (HIVE-2340) optimize orderby followed by a groupby 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-2340?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13571177#comment-13571177 ] Phabricator commented on HIVE-2340: ----------------------------------- njain has commented on the revision "HIVE-2340 [jira] optimize orderby followed by a groupby". Do you think it might be a good idea to get HIVE-3972 first ? INLINE COMMENTS ql/src/java/org/apache/hadoop/hive/ql/optimizer/ReduceSinkDeDuplication.java:99 Isn't it true that R1 and R2 will have the same cost for RS -> GBY --> anything --> RS ? If yes, how do you know which rule will be fired ? REVISION DETAIL https://reviews.facebook.net/D1209 To: JIRA, navis Cc: hagleitn, njain > optimize orderby followed by a groupby > -------------------------------------- > > Key: HIVE-2340 > URL: https://issues.apache.org/jira/browse/HIVE-2340 > Project: Hive > Issue Type: Sub-task > Components: Query Processor > Reporter: Navis > Assignee: Navis > Priority: Minor > Labels: perfomance > Attachments: ASF.LICENSE.NOT.GRANTED--HIVE-2340.D1209.1.patch, ASF.LICENSE.NOT.GRANTED--HIVE-2340.D1209.2.patch, ASF.LICENSE.NOT.GRANTED--HIVE-2340.D1209.3.patch, ASF.LICENSE.NOT.GRANTED--HIVE-2340.D1209.4.patch, ASF.LICENSE.NOT.GRANTED--HIVE-2340.D1209.5.patch, HIVE-2340.1.patch.txt, HIVE-2340.D1209.10.patch, HIVE-2340.D1209.6.patch, HIVE-2340.D1209.7.patch, HIVE-2340.D1209.8.patch, HIVE-2340.D1209.9.patch, testclidriver.txt > > > Before implementing optimizer for JOIN-GBY, try to implement RS-GBY optimizer(cluster-by following group-by). -- This message is automatically generated by JIRA. If you think it was sent incorrectly, please contact your JIRA administrators For more information on JIRA, see: http://www.atlassian.com/software/jira