Return-Path: X-Original-To: apmail-hive-issues-archive@minotaur.apache.org Delivered-To: apmail-hive-issues-archive@minotaur.apache.org Received: from mail.apache.org (hermes.apache.org [140.211.11.3]) by minotaur.apache.org (Postfix) with SMTP id 1E02B17E27 for ; Wed, 8 Apr 2015 00:07:19 +0000 (UTC) Received: (qmail 54797 invoked by uid 500); 8 Apr 2015 00:07:12 -0000 Delivered-To: apmail-hive-issues-archive@hive.apache.org Received: (qmail 54778 invoked by uid 500); 8 Apr 2015 00:07:12 -0000 Mailing-List: contact issues-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 issues@hive.apache.org Received: (qmail 54768 invoked by uid 99); 8 Apr 2015 00:07:12 -0000 Received: from arcas.apache.org (HELO arcas.apache.org) (140.211.11.28) by apache.org (qpsmtpd/0.29) with ESMTP; Wed, 08 Apr 2015 00:07:12 +0000 Date: Wed, 8 Apr 2015 00:07:12 +0000 (UTC) From: "Ashutosh Chauhan (JIRA)" To: issues@hive.apache.org Message-ID: In-Reply-To: References: Subject: [jira] [Updated] (HIVE-9780) Add another level of explain for RDBMS audience 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-9780?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ] Ashutosh Chauhan updated HIVE-9780: ----------------------------------- Component/s: Diagnosability > Add another level of explain for RDBMS audience > ----------------------------------------------- > > Key: HIVE-9780 > URL: https://issues.apache.org/jira/browse/HIVE-9780 > Project: Hive > Issue Type: Improvement > Components: Diagnosability > Reporter: Pengcheng Xiong > Assignee: Pengcheng Xiong > Priority: Minor > Fix For: 1.2.0 > > Attachments: HIVE-9780.01.patch, HIVE-9780.02.patch, HIVE-9780.03.patch, HIVE-9780.04.patch, HIVE-9780.05.patch, HIVE-9780.06.patch, HIVE-9780.07.patch, HIVE-9780.08.patch, HIVE-9780.09.patch, HIVE-9780.10.patch > > > Current Hive Explain (default) is targeted at MR Audience. We need a new level of explain plan to be targeted at RDBMS audience. The explain requires these: > 1) The focus needs to be on what part of the query is being executed rather than internals of the engines > 2) There needs to be a clearly readable tree of operations > 3) Examples - Table scan should mention the table being scanned, the Sarg, the size of table and expected cardinality after the Sarg'ed read. The join should mention the table being joined with and the join condition. The aggregate should mention the columns in the group-by. -- This message was sent by Atlassian JIRA (v6.3.4#6332)