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 79DB71079D for ; Sat, 8 Mar 2014 20:57:49 +0000 (UTC) Received: (qmail 37571 invoked by uid 500); 8 Mar 2014 20:57:46 -0000 Delivered-To: apmail-hive-dev-archive@hive.apache.org Received: (qmail 37237 invoked by uid 500); 8 Mar 2014 20:57:45 -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 37219 invoked by uid 500); 8 Mar 2014 20:57:45 -0000 Delivered-To: apmail-hadoop-hive-dev@hadoop.apache.org Received: (qmail 37205 invoked by uid 99); 8 Mar 2014 20:57:45 -0000 Received: from arcas.apache.org (HELO arcas.apache.org) (140.211.11.28) by apache.org (qpsmtpd/0.29) with ESMTP; Sat, 08 Mar 2014 20:57:45 +0000 Date: Sat, 8 Mar 2014 20:57:45 +0000 (UTC) From: "Remus Rusanu (JIRA)" To: hive-dev@hadoop.apache.org Message-ID: In-Reply-To: References: Subject: [jira] [Commented] (HIVE-6222) Make Vector Group By operator abandon grouping if too many distinct keys 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-6222?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13925004#comment-13925004 ] Remus Rusanu commented on HIVE-6222: ------------------------------------ https://reviews.apache.org/r/18943/ > Make Vector Group By operator abandon grouping if too many distinct keys > ------------------------------------------------------------------------ > > Key: HIVE-6222 > URL: https://issues.apache.org/jira/browse/HIVE-6222 > Project: Hive > Issue Type: Sub-task > Reporter: Remus Rusanu > Assignee: Remus Rusanu > Priority: Minor > Attachments: HIVE-6222.1.patch > > > Row mode GBY is becoming a pass-through if not enough aggregation occurs on the map side, relying on the shuffle+reduce side to do the work. Have VGBY do the same. -- This message was sent by Atlassian JIRA (v6.2#6252)