Return-Path: X-Original-To: archive-asf-public-internal@cust-asf2.ponee.io Delivered-To: archive-asf-public-internal@cust-asf2.ponee.io Received: from cust-asf.ponee.io (cust-asf.ponee.io [163.172.22.183]) by cust-asf2.ponee.io (Postfix) with ESMTP id E02F5200C6E for ; Mon, 8 May 2017 12:13:08 +0200 (CEST) Received: by cust-asf.ponee.io (Postfix) id DED40160BBF; Mon, 8 May 2017 10:13:08 +0000 (UTC) Delivered-To: archive-asf-public@cust-asf.ponee.io Received: from mail.apache.org (hermes.apache.org [140.211.11.3]) by cust-asf.ponee.io (Postfix) with SMTP id 33B48160BA5 for ; Mon, 8 May 2017 12:13:08 +0200 (CEST) Received: (qmail 93006 invoked by uid 500); 8 May 2017 10:13:07 -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 92997 invoked by uid 99); 8 May 2017 10:13:07 -0000 Received: from pnap-us-west-generic-nat.apache.org (HELO spamd4-us-west.apache.org) (209.188.14.142) by apache.org (qpsmtpd/0.29) with ESMTP; Mon, 08 May 2017 10:13:07 +0000 Received: from localhost (localhost [127.0.0.1]) by spamd4-us-west.apache.org (ASF Mail Server at spamd4-us-west.apache.org) with ESMTP id 10D9CC03A3 for ; Mon, 8 May 2017 10:13:07 +0000 (UTC) X-Virus-Scanned: Debian amavisd-new at spamd4-us-west.apache.org X-Spam-Flag: NO X-Spam-Score: -100.002 X-Spam-Level: X-Spam-Status: No, score=-100.002 tagged_above=-999 required=6.31 tests=[RP_MATCHES_RCVD=-0.001, SPF_PASS=-0.001, USER_IN_WHITELIST=-100] autolearn=disabled Received: from mx1-lw-eu.apache.org ([10.40.0.8]) by localhost (spamd4-us-west.apache.org [10.40.0.11]) (amavisd-new, port 10024) with ESMTP id D0I574FPppS3 for ; Mon, 8 May 2017 10:13:06 +0000 (UTC) Received: from mailrelay1-us-west.apache.org (mailrelay1-us-west.apache.org [209.188.14.139]) by mx1-lw-eu.apache.org (ASF Mail Server at mx1-lw-eu.apache.org) with ESMTP id B580D5F367 for ; Mon, 8 May 2017 10:13:05 +0000 (UTC) Received: from jira-lw-us.apache.org (unknown [207.244.88.139]) by mailrelay1-us-west.apache.org (ASF Mail Server at mailrelay1-us-west.apache.org) with ESMTP id EE9CBE0D85 for ; Mon, 8 May 2017 10:13:04 +0000 (UTC) Received: from jira-lw-us.apache.org (localhost [127.0.0.1]) by jira-lw-us.apache.org (ASF Mail Server at jira-lw-us.apache.org) with ESMTP id 60C6721DFE for ; Mon, 8 May 2017 10:13:04 +0000 (UTC) Date: Mon, 8 May 2017 10:13:04 +0000 (UTC) From: "Jesus Camacho Rodriguez (JIRA)" To: issues@hive.apache.org Message-ID: In-Reply-To: References: Subject: [jira] [Updated] (HIVE-16602) Implement shared scans with Tez MIME-Version: 1.0 Content-Type: text/plain; charset=utf-8 Content-Transfer-Encoding: 7bit X-JIRA-FingerPrint: 30527f35849b9dde25b450d4833f0394 archived-at: Mon, 08 May 2017 10:13:09 -0000 [ https://issues.apache.org/jira/browse/HIVE-16602?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ] Jesus Camacho Rodriguez updated HIVE-16602: ------------------------------------------- Attachment: HIVE-16602.patch > Implement shared scans with Tez > ------------------------------- > > Key: HIVE-16602 > URL: https://issues.apache.org/jira/browse/HIVE-16602 > Project: Hive > Issue Type: New Feature > Components: Physical Optimizer > Affects Versions: 3.0.0 > Reporter: Jesus Camacho Rodriguez > Assignee: Jesus Camacho Rodriguez > Attachments: HIVE-16602.patch > > > Given a query plan, the goal is to identify scans on input tables that can be merged so the data is read only once. Optimization will be carried out at the physical level. > In the longer term, identification of equivalent expressions and reutilization of intermediary results should be done at the logical layer via Spool operator. -- This message was sent by Atlassian JIRA (v6.3.15#6346)