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 DA6A0200BAF for ; Mon, 31 Oct 2016 17:32:59 +0100 (CET) Received: by cust-asf.ponee.io (Postfix) id D9107160B06; Mon, 31 Oct 2016 16:32:59 +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 534AB160AED for ; Mon, 31 Oct 2016 17:32:59 +0100 (CET) Received: (qmail 5198 invoked by uid 500); 31 Oct 2016 16:32:58 -0000 Mailing-List: contact issues-help@drill.apache.org; run by ezmlm Precedence: bulk List-Help: List-Unsubscribe: List-Post: List-Id: Reply-To: dev@drill.apache.org Delivered-To: mailing list issues@drill.apache.org Received: (qmail 5179 invoked by uid 99); 31 Oct 2016 16:32:58 -0000 Received: from arcas.apache.org (HELO arcas) (140.211.11.28) by apache.org (qpsmtpd/0.29) with ESMTP; Mon, 31 Oct 2016 16:32:58 +0000 Received: from arcas.apache.org (localhost [127.0.0.1]) by arcas (Postfix) with ESMTP id 6B4042C14F9 for ; Mon, 31 Oct 2016 16:32:58 +0000 (UTC) Date: Mon, 31 Oct 2016 16:32:58 +0000 (UTC) From: "Zelaine Fong (JIRA)" To: issues@drill.apache.org Message-ID: In-Reply-To: References: Subject: [jira] [Assigned] (DRILL-4706) Fragment planning causes Drillbits to read remote chunks when local copies are available MIME-Version: 1.0 Content-Type: text/plain; charset=utf-8 Content-Transfer-Encoding: 7bit X-JIRA-FingerPrint: 30527f35849b9dde25b450d4833f0394 archived-at: Mon, 31 Oct 2016 16:33:00 -0000 [ https://issues.apache.org/jira/browse/DRILL-4706?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ] Zelaine Fong reassigned DRILL-4706: ----------------------------------- Assignee: Sorabh Hamirwasia (was: Padma Penumarthy) Assigning to [~shamirwasia] for review. > Fragment planning causes Drillbits to read remote chunks when local copies are available > ---------------------------------------------------------------------------------------- > > Key: DRILL-4706 > URL: https://issues.apache.org/jira/browse/DRILL-4706 > Project: Apache Drill > Issue Type: Bug > Components: Query Planning & Optimization > Affects Versions: 1.6.0 > Environment: CentOS, RHEL > Reporter: Kunal Khatua > Assignee: Sorabh Hamirwasia > Labels: performance, planning > > When a table (datasize=70GB) of 160 parquet files (each having a single rowgroup and fitting within one chunk) is available on a 10-node setup with replication=3 ; a pure data scan query causes about 2% of the data to be read remotely. > Even with the creation of metadata cache, the planner is selecting a sub-optimal plan of executing the SCAN fragments such that some of the data is served from a remote server. -- This message was sent by Atlassian JIRA (v6.3.4#6332)