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 37E6A11666 for ; Tue, 5 Aug 2014 21:31:14 +0000 (UTC) Received: (qmail 60478 invoked by uid 500); 5 Aug 2014 21:31:13 -0000 Delivered-To: apmail-hive-dev-archive@hive.apache.org Received: (qmail 60397 invoked by uid 500); 5 Aug 2014 21:31:13 -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 60384 invoked by uid 500); 5 Aug 2014 21:31:13 -0000 Delivered-To: apmail-hadoop-hive-dev@hadoop.apache.org Received: (qmail 60381 invoked by uid 99); 5 Aug 2014 21:31:13 -0000 Received: from arcas.apache.org (HELO arcas.apache.org) (140.211.11.28) by apache.org (qpsmtpd/0.29) with ESMTP; Tue, 05 Aug 2014 21:31:13 +0000 Date: Tue, 5 Aug 2014 21:31:13 +0000 (UTC) From: "Sergey Shelukhin (JIRA)" To: hive-dev@hadoop.apache.org Message-ID: In-Reply-To: References: Subject: [jira] [Commented] (HIVE-7616) pre-size mapjoin hashtable based on statistics 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-7616?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=14086802#comment-14086802 ] Sergey Shelukhin commented on HIVE-7616: ---------------------------------------- it would be nice to have key count estimate in stats too, but I guess key could be different for each query as far as Hive is concerned. Maybe we can add some notion of keys for typical dimension tables and have stats for that. > pre-size mapjoin hashtable based on statistics > ---------------------------------------------- > > Key: HIVE-7616 > URL: https://issues.apache.org/jira/browse/HIVE-7616 > Project: Hive > Issue Type: Improvement > Reporter: Sergey Shelukhin > Assignee: Sergey Shelukhin > Attachments: HIVE-7616.patch > > -- This message was sent by Atlassian JIRA (v6.2#6252)