From dev-return-40687-archive-asf-public=cust-asf.ponee.io@ignite.apache.org Thu Oct 18 15:59:05 2018 Return-Path: X-Original-To: archive-asf-public@cust-asf.ponee.io Delivered-To: archive-asf-public@cust-asf.ponee.io Received: from mail.apache.org (hermes.apache.org [140.211.11.3]) by mx-eu-01.ponee.io (Postfix) with SMTP id 74526180674 for ; Thu, 18 Oct 2018 15:59:05 +0200 (CEST) Received: (qmail 52168 invoked by uid 500); 18 Oct 2018 13:59:04 -0000 Mailing-List: contact dev-help@ignite.apache.org; run by ezmlm Precedence: bulk List-Help: List-Unsubscribe: List-Post: List-Id: Reply-To: dev@ignite.apache.org Delivered-To: mailing list dev@ignite.apache.org Received: (qmail 52155 invoked by uid 99); 18 Oct 2018 13:59:04 -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; Thu, 18 Oct 2018 13:59:04 +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 04242C07F0 for ; Thu, 18 Oct 2018 13:59:04 +0000 (UTC) X-Virus-Scanned: Debian amavisd-new at spamd4-us-west.apache.org X-Spam-Flag: NO X-Spam-Score: -110.301 X-Spam-Level: X-Spam-Status: No, score=-110.301 tagged_above=-999 required=6.31 tests=[ENV_AND_HDR_SPF_MATCH=-0.5, RCVD_IN_DNSWL_MED=-2.3, SPF_PASS=-0.001, USER_IN_DEF_SPF_WL=-7.5, 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 cc-CGcCPylmS for ; Thu, 18 Oct 2018 13:59:03 +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 68A895F4DA for ; Thu, 18 Oct 2018 13:59:02 +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 3369DE0360 for ; Thu, 18 Oct 2018 13:59:01 +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 81D7824EA4 for ; Thu, 18 Oct 2018 13:59:00 +0000 (UTC) Date: Thu, 18 Oct 2018 13:59:00 +0000 (UTC) From: "Taras Ledkov (JIRA)" To: dev@ignite.apache.org Message-ID: In-Reply-To: References: Subject: [jira] [Created] (IGNITE-9933) SQL: lazy mode isn't used on reduce step MIME-Version: 1.0 Content-Type: text/plain; charset=utf-8 Content-Transfer-Encoding: 7bit X-JIRA-FingerPrint: 30527f35849b9dde25b450d4833f0394 Taras Ledkov created IGNITE-9933: ------------------------------------ Summary: SQL: lazy mode isn't used on reduce step Key: IGNITE-9933 URL: https://issues.apache.org/jira/browse/IGNITE-9933 Project: Ignite Issue Type: Improvement Components: sql Affects Versions: 2.6 Reporter: Taras Ledkov Assignee: Taras Ledkov Lazy execution is introduced as default by IGNITE-9171. But queries are executed lazy only in map phase now. So, we have introduce lazy query execution on reduce step when merge table is user to prevent waits for fetch all results on reduce step and excessive allocate memory. It will be applicable for queries sorted by index. Attention: when reduce query is executed in lazy mode the release remote resource and query cancellation must be changed. See: - {{GridReduceQueryExecutor#query}} - {{GridReduceQueryExecutor#releaseRemoteResources}} -- This message was sent by Atlassian JIRA (v7.6.3#76005)