Return-Path: X-Original-To: apmail-hadoop-mapreduce-dev-archive@minotaur.apache.org Delivered-To: apmail-hadoop-mapreduce-dev-archive@minotaur.apache.org Received: from mail.apache.org (hermes.apache.org [140.211.11.3]) by minotaur.apache.org (Postfix) with SMTP id E5687DFBD for ; Thu, 5 Jul 2012 10:21:38 +0000 (UTC) Received: (qmail 6886 invoked by uid 500); 5 Jul 2012 10:21:38 -0000 Delivered-To: apmail-hadoop-mapreduce-dev-archive@hadoop.apache.org Received: (qmail 6422 invoked by uid 500); 5 Jul 2012 10:21:37 -0000 Mailing-List: contact mapreduce-dev-help@hadoop.apache.org; run by ezmlm Precedence: bulk List-Help: List-Unsubscribe: List-Post: List-Id: Reply-To: mapreduce-dev@hadoop.apache.org Delivered-To: mailing list mapreduce-dev@hadoop.apache.org Received: (qmail 6309 invoked by uid 99); 5 Jul 2012 10:21:36 -0000 Received: from issues-vm.apache.org (HELO issues-vm) (140.211.11.160) by apache.org (qpsmtpd/0.29) with ESMTP; Thu, 05 Jul 2012 10:21:36 +0000 Received: from isssues-vm.apache.org (localhost [127.0.0.1]) by issues-vm (Postfix) with ESMTP id 9487214285A for ; Thu, 5 Jul 2012 10:21:36 +0000 (UTC) Date: Thu, 5 Jul 2012 10:21:36 +0000 (UTC) From: "Luke Lu (JIRA)" To: mapreduce-dev@hadoop.apache.org Message-ID: <955171117.7770.1341483696612.JavaMail.jiratomcat@issues-vm> Subject: [jira] [Created] (MAPREDUCE-4399) Fix performance regression in shuffle MIME-Version: 1.0 Content-Type: text/plain; charset=utf-8 Content-Transfer-Encoding: 7bit X-JIRA-FingerPrint: 30527f35849b9dde25b450d4833f0394 Luke Lu created MAPREDUCE-4399: ---------------------------------- Summary: Fix performance regression in shuffle Key: MAPREDUCE-4399 URL: https://issues.apache.org/jira/browse/MAPREDUCE-4399 Project: Hadoop Map/Reduce Issue Type: Bug Components: tasktracker Affects Versions: 1.0.3, 0.20.203.0 Reporter: Luke Lu Assignee: Luke Lu There is a significant (up to 3x) performance regression in shuffle (vs 0.20.2) in the Hadoop 1.x series. Most noticeable with high-end switches. -- This message is automatically generated by JIRA. If you think it was sent incorrectly, please contact your JIRA administrators: https://issues.apache.org/jira/secure/ContactAdministrators!default.jspa For more information on JIRA, see: http://www.atlassian.com/software/jira