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 83B0AEBB0 for ; Sun, 3 Feb 2013 17:48:13 +0000 (UTC) Received: (qmail 78661 invoked by uid 500); 3 Feb 2013 17:48:13 -0000 Delivered-To: apmail-hive-dev-archive@hive.apache.org Received: (qmail 78621 invoked by uid 500); 3 Feb 2013 17:48:12 -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 78612 invoked by uid 500); 3 Feb 2013 17:48:12 -0000 Delivered-To: apmail-hadoop-hive-dev@hadoop.apache.org Received: (qmail 78609 invoked by uid 99); 3 Feb 2013 17:48:12 -0000 Received: from arcas.apache.org (HELO arcas.apache.org) (140.211.11.28) by apache.org (qpsmtpd/0.29) with ESMTP; Sun, 03 Feb 2013 17:48:12 +0000 Date: Sun, 3 Feb 2013 17:48:12 +0000 (UTC) From: "Namit Jain (JIRA)" To: hive-dev@hadoop.apache.org Message-ID: In-Reply-To: References: Subject: [jira] [Updated] (HIVE-3917) Support noscan operation for analyze command 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-3917?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ] Namit Jain updated HIVE-3917: ----------------------------- Resolution: Fixed Fix Version/s: 0.11.0 Hadoop Flags: Reviewed Status: Resolved (was: Patch Available) Committed. Thanks Tim > Support noscan operation for analyze command > -------------------------------------------- > > Key: HIVE-3917 > URL: https://issues.apache.org/jira/browse/HIVE-3917 > Project: Hive > Issue Type: Improvement > Components: Statistics > Affects Versions: 0.11.0 > Reporter: Gang Tim Liu > Assignee: Gang Tim Liu > Fix For: 0.11.0 > > Attachments: HIVE-3917.patch.1, HIVE-3917.patch.2, HIVE-3917.patch.3, HIVE-3917.patch.4 > > > hive supports analyze command to gather statistics from existing tables/partition https://cwiki.apache.org/confluence/display/Hive/StatsDev#StatsDev-ExistingTables > It collects: > 1. Number of Rows > 2. Number of files > 3. Size in Bytes > If table/partition is big, the operation would take time since it will open all files and scan all data. > It would be nice to support fast operation to gather statistics which doesn't require to open all files: > 1. Number of files > 2. Size in Bytes > Potential syntax is > ANALYZE TABLE tablename [PARTITION(partcol1[=val1], partcol2[=val2], ...)] COMPUTE STATISTICS [noscan]; > In the future, all statistics without scan can be retrieved via this optional parameter. -- 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