Return-Path: X-Original-To: apmail-tajo-dev-archive@minotaur.apache.org Delivered-To: apmail-tajo-dev-archive@minotaur.apache.org Received: from mail.apache.org (hermes.apache.org [140.211.11.3]) by minotaur.apache.org (Postfix) with SMTP id 7C01410AD5 for ; Fri, 11 Oct 2013 10:23:08 +0000 (UTC) Received: (qmail 28086 invoked by uid 500); 11 Oct 2013 10:23:08 -0000 Delivered-To: apmail-tajo-dev-archive@tajo.apache.org Received: (qmail 28021 invoked by uid 500); 11 Oct 2013 10:23:07 -0000 Mailing-List: contact dev-help@tajo.incubator.apache.org; run by ezmlm Precedence: bulk List-Help: List-Unsubscribe: List-Post: List-Id: Reply-To: dev@tajo.incubator.apache.org Delivered-To: mailing list dev@tajo.incubator.apache.org Received: (qmail 28012 invoked by uid 99); 11 Oct 2013 10:23:06 -0000 Received: from nike.apache.org (HELO nike.apache.org) (192.87.106.230) by apache.org (qpsmtpd/0.29) with ESMTP; Fri, 11 Oct 2013 10:23:06 +0000 X-ASF-Spam-Status: No, hits=-2000.0 required=5.0 tests=ALL_TRUSTED,RP_MATCHES_RCVD X-Spam-Check-By: apache.org Received: from [140.211.11.3] (HELO mail.apache.org) (140.211.11.3) by apache.org (qpsmtpd/0.29) with SMTP; Fri, 11 Oct 2013 10:23:04 +0000 Received: (qmail 27962 invoked by uid 99); 11 Oct 2013 10:22:42 -0000 Received: from arcas.apache.org (HELO arcas.apache.org) (140.211.11.28) by apache.org (qpsmtpd/0.29) with ESMTP; Fri, 11 Oct 2013 10:22:42 +0000 Date: Fri, 11 Oct 2013 10:22:41 +0000 (UTC) From: "Jinho Kim (JIRA)" To: dev@tajo.incubator.apache.org Message-ID: In-Reply-To: References: Subject: [jira] [Commented] (TAJO-99) Design the interface of join enumeration algorithm MIME-Version: 1.0 Content-Type: text/plain; charset=utf-8 Content-Transfer-Encoding: 7bit X-JIRA-FingerPrint: 30527f35849b9dde25b450d4833f0394 X-Virus-Checked: Checked by ClamAV on apache.org [ https://issues.apache.org/jira/browse/TAJO-99?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13792503#comment-13792503 ] Jinho Kim commented on TAJO-99: ------------------------------- ++1 Great work!! I've verified 'mvn clean install'. > Design the interface of join enumeration algorithm > -------------------------------------------------- > > Key: TAJO-99 > URL: https://issues.apache.org/jira/browse/TAJO-99 > Project: Tajo > Issue Type: Sub-task > Components: planner/optimizer > Reporter: Hyunsik Choi > Assignee: Hyunsik Choi > Attachments: TAJO-99.patch > > > The core feature of cost-based optimizer is cost-based join enumeration approach. The main objective of this is to find the best join order from lots of enumerated join trees. In database community, there have been many studies for join enumeration ways. > It would like to great to provide a generic and pluggable interface for join enumeration algorithms. It may encourage contributors to implement various join enumeration ways, and users could choose the best join ordering algorithm for their purpose. -- This message was sent by Atlassian JIRA (v6.1#6144)