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 8A640FF15 for ; Sat, 5 Oct 2013 08:06:13 +0000 (UTC) Received: (qmail 83975 invoked by uid 500); 5 Oct 2013 08:06:09 -0000 Delivered-To: apmail-tajo-dev-archive@tajo.apache.org Received: (qmail 83911 invoked by uid 500); 5 Oct 2013 08:06:08 -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 83901 invoked by uid 99); 5 Oct 2013 08:06:07 -0000 Received: from nike.apache.org (HELO nike.apache.org) (192.87.106.230) by apache.org (qpsmtpd/0.29) with ESMTP; Sat, 05 Oct 2013 08:06:07 +0000 X-ASF-Spam-Status: No, hits=-2000.7 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; Sat, 05 Oct 2013 08:06:04 +0000 Received: (qmail 83822 invoked by uid 99); 5 Oct 2013 08:05:42 -0000 Received: from arcas.apache.org (HELO arcas.apache.org) (140.211.11.28) by apache.org (qpsmtpd/0.29) with ESMTP; Sat, 05 Oct 2013 08:05:42 +0000 Date: Sat, 5 Oct 2013 08:05:41 +0000 (UTC) From: "Hyunsik Choi (JIRA)" To: dev@tajo.incubator.apache.org Message-ID: In-Reply-To: References: Subject: [jira] [Updated] (TAJO-35) Hybrid Hash Join Operator 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-35?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ] Hyunsik Choi updated TAJO-35: ----------------------------- Attachment: TAJO-35_2.patch I've rebased and merged the first patch. For a while, I'll continue to improve your work. Thank you for your contribution! > Hybrid Hash Join Operator > ------------------------- > > Key: TAJO-35 > URL: https://issues.apache.org/jira/browse/TAJO-35 > Project: Tajo > Issue Type: New Feature > Components: physical operator > Reporter: Hyunsik Choi > Assignee: Sergio Esteves > Labels: gsoc, gsoc2013, mentor > Attachments: TAJO-35_2.patch, TAJO-35.patch > > > The hybrid hash join algorithm is well known as the best join algorithm which takes advantage of more available memory. The goal of this proposal is to implement HybridHashJoinExec class subclassed from PhysicalExec. Its original literature is "Join processing in database systems with large main memories" (http://www.cs.ucr.edu/~tsotras/cs236/W13/join.pdf). In addition, you could find many other materials available in the web. -- This message was sent by Atlassian JIRA (v6.1#6144)