From common-issues-return-153999-archive-asf-public=cust-asf.ponee.io@hadoop.apache.org Thu Jun 21 19:57:06 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 A737A18062B for ; Thu, 21 Jun 2018 19:57:05 +0200 (CEST) Received: (qmail 90168 invoked by uid 500); 21 Jun 2018 17:57:04 -0000 Mailing-List: contact common-issues-help@hadoop.apache.org; run by ezmlm Precedence: bulk List-Help: List-Unsubscribe: List-Post: List-Id: Delivered-To: mailing list common-issues@hadoop.apache.org Received: (qmail 90157 invoked by uid 99); 21 Jun 2018 17:57:04 -0000 Received: from pnap-us-west-generic-nat.apache.org (HELO spamd2-us-west.apache.org) (209.188.14.142) by apache.org (qpsmtpd/0.29) with ESMTP; Thu, 21 Jun 2018 17:57:04 +0000 Received: from localhost (localhost [127.0.0.1]) by spamd2-us-west.apache.org (ASF Mail Server at spamd2-us-west.apache.org) with ESMTP id 416991A254C for ; Thu, 21 Jun 2018 17:57:04 +0000 (UTC) X-Virus-Scanned: Debian amavisd-new at spamd2-us-west.apache.org X-Spam-Flag: NO X-Spam-Score: -109.501 X-Spam-Level: X-Spam-Status: No, score=-109.501 tagged_above=-999 required=6.31 tests=[ENV_AND_HDR_SPF_MATCH=-0.5, KAM_ASCII_DIVIDERS=0.8, 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 (spamd2-us-west.apache.org [10.40.0.9]) (amavisd-new, port 10024) with ESMTP id lQvnm4oCLb2D for ; Thu, 21 Jun 2018 17:57:03 +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 B48A95F4E5 for ; Thu, 21 Jun 2018 17:57:01 +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 EDD86E0F73 for ; Thu, 21 Jun 2018 17:57:00 +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 4D87A23F9B for ; Thu, 21 Jun 2018 17:57:00 +0000 (UTC) Date: Thu, 21 Jun 2018 17:57:00 +0000 (UTC) From: "Hudson (JIRA)" To: common-issues@hadoop.apache.org Message-ID: In-Reply-To: References: Subject: [jira] [Commented] (HADOOP-15549) Upgrade to commons-configuration 2.1 regresses task CPU consumption 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/HADOOP-15549?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16519642#comment-16519642 ] Hudson commented on HADOOP-15549: --------------------------------- SUCCESS: Integrated in Jenkins build Hadoop-trunk-Commit #14460 (See [https://builds.apache.org/job/Hadoop-trunk-Commit/14460/]) HADOOP-15549. Upgrade to commons-configuration 2.1 regresses task CPU (todd: rev 59de9679540f6d0edfb34cf9f88e52b51d94b4f4) * (edit) hadoop-common-project/hadoop-common/src/main/java/org/apache/hadoop/metrics2/impl/MetricsConfig.java > Upgrade to commons-configuration 2.1 regresses task CPU consumption > ------------------------------------------------------------------- > > Key: HADOOP-15549 > URL: https://issues.apache.org/jira/browse/HADOOP-15549 > Project: Hadoop Common > Issue Type: Bug > Components: metrics > Affects Versions: 3.0.2 > Reporter: Todd Lipcon > Assignee: Todd Lipcon > Priority: Major > Fix For: 3.2.0 > > Attachments: hadoop-15549.txt > > > HADOOP-13660 upgraded from commons-configuration 1.x to 2.x. commons-configuration is used when parsing the metrics configuration properties file. The new builder API used in the new version apparently makes use of a bunch of very bloated reflection and classloading nonsense to achieve the same goal, and this results in a regression of >100ms of CPU time as measured by a program which simply initializes DefaultMetricsSystem. > This isn't a big deal for long-running daemons, but for MR tasks which might only run a few seconds on poorly-tuned jobs, this can be noticeable. -- This message was sent by Atlassian JIRA (v7.6.3#76005) --------------------------------------------------------------------- To unsubscribe, e-mail: common-issues-unsubscribe@hadoop.apache.org For additional commands, e-mail: common-issues-help@hadoop.apache.org