From issues-return-19231-archive-asf-public=cust-asf.ponee.io@kylin.apache.org Thu Aug 23 03:19:04 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 215E0180662 for ; Thu, 23 Aug 2018 03:19:03 +0200 (CEST) Received: (qmail 37463 invoked by uid 500); 23 Aug 2018 01:19:03 -0000 Mailing-List: contact issues-help@kylin.apache.org; run by ezmlm Precedence: bulk List-Help: List-Unsubscribe: List-Post: List-Id: Reply-To: dev@kylin.apache.org Delivered-To: mailing list issues@kylin.apache.org Received: (qmail 37454 invoked by uid 99); 23 Aug 2018 01:19:03 -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, 23 Aug 2018 01:19:03 +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 CF6D4C00D6 for ; Thu, 23 Aug 2018 01:19:02 +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-us.apache.org ([10.40.0.8]) by localhost (spamd4-us-west.apache.org [10.40.0.11]) (amavisd-new, port 10024) with ESMTP id H8DyNzuNlw_q for ; Thu, 23 Aug 2018 01:19:02 +0000 (UTC) Received: from mailrelay1-us-west.apache.org (mailrelay1-us-west.apache.org [209.188.14.139]) by mx1-lw-us.apache.org (ASF Mail Server at mx1-lw-us.apache.org) with ESMTP id 06C825F3D0 for ; Thu, 23 Aug 2018 01:19:02 +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 48D89E12FE for ; Thu, 23 Aug 2018 01:19:01 +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 5B1E9246B3 for ; Thu, 23 Aug 2018 01:19:00 +0000 (UTC) Date: Thu, 23 Aug 2018 01:19:00 +0000 (UTC) From: "Shaofeng SHI (JIRA)" To: issues@kylin.apache.org Message-ID: In-Reply-To: References: Subject: [jira] [Assigned] (KYLIN-3472) TopN merge in Spark engine is slow MIME-Version: 1.0 Content-Type: text/plain; charset=utf-8 Content-Transfer-Encoding: 7bit X-JIRA-FingerPrint: 30527f35849b9dde25b450d4833f0394 [ https://issues.apache.org/jira/browse/KYLIN-3472?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ] Shaofeng SHI reassigned KYLIN-3472: ----------------------------------- Assignee: Shaofeng SHI Fix Version/s: v2.5.0 > TopN merge in Spark engine is slow > ---------------------------------- > > Key: KYLIN-3472 > URL: https://issues.apache.org/jira/browse/KYLIN-3472 > Project: Kylin > Issue Type: Bug > Components: Spark Engine > Reporter: Shaofeng SHI > Assignee: Shaofeng SHI > Priority: Major > Fix For: v2.5.0 > > Attachments: image-2018-07-27-18-16-12-112.png, image-2018-07-27-18-16-12-192.png > > > Spark executor thread dump shows most CPU are spent on TopNCounter#merge . !image-2018-07-27-18-16-12-192.png! -- This message was sent by Atlassian JIRA (v7.6.3#76005)