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 F056218147 for ; Thu, 16 Jul 2015 20:15:04 +0000 (UTC) Received: (qmail 79496 invoked by uid 500); 16 Jul 2015 20:15:04 -0000 Delivered-To: apmail-hive-issues-archive@hive.apache.org Received: (qmail 79473 invoked by uid 500); 16 Jul 2015 20:15:04 -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 79463 invoked by uid 99); 16 Jul 2015 20:15:04 -0000 Received: from arcas.apache.org (HELO arcas.apache.org) (140.211.11.28) by apache.org (qpsmtpd/0.29) with ESMTP; Thu, 16 Jul 2015 20:15:04 +0000 Date: Thu, 16 Jul 2015 20:15:04 +0000 (UTC) From: "Prasanth Jayachandran (JIRA)" To: issues@hive.apache.org Message-ID: In-Reply-To: References: Subject: [jira] [Commented] (HIVE-11281) Memoize toStringTree() for ASTNode 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-11281?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=14630255#comment-14630255 ] Prasanth Jayachandran commented on HIVE-11281: ---------------------------------------------- the white space is not an issue. my bad. never mind. > Memoize toStringTree() for ASTNode > ---------------------------------- > > Key: HIVE-11281 > URL: https://issues.apache.org/jira/browse/HIVE-11281 > Project: Hive > Issue Type: Bug > Components: Query Planning > Affects Versions: 1.0.0, 1.2.0, 1.1.0 > Reporter: Ashutosh Chauhan > Assignee: Ashutosh Chauhan > Attachments: HIVE-11281.patch > > > Currently it defaults to BaseTree::toStringTree() which always computes it recursively. For very large trees it becomes expensive. On one particular test query compilation time went down from 55 seconds to 2 seconds. -- This message was sent by Atlassian JIRA (v6.3.4#6332)