Return-Path: Delivered-To: apmail-hadoop-mapreduce-issues-archive@minotaur.apache.org Received: (qmail 59933 invoked from network); 26 Mar 2010 10:54:52 -0000 Received: from unknown (HELO mail.apache.org) (140.211.11.3) by 140.211.11.9 with SMTP; 26 Mar 2010 10:54:52 -0000 Received: (qmail 57745 invoked by uid 500); 26 Mar 2010 10:54:52 -0000 Delivered-To: apmail-hadoop-mapreduce-issues-archive@hadoop.apache.org Received: (qmail 57650 invoked by uid 500); 26 Mar 2010 10:54:49 -0000 Mailing-List: contact mapreduce-issues-help@hadoop.apache.org; run by ezmlm Precedence: bulk List-Help: List-Unsubscribe: List-Post: List-Id: Reply-To: mapreduce-issues@hadoop.apache.org Delivered-To: mailing list mapreduce-issues@hadoop.apache.org Received: (qmail 57634 invoked by uid 99); 26 Mar 2010 10:54:48 -0000 Received: from athena.apache.org (HELO athena.apache.org) (140.211.11.136) by apache.org (qpsmtpd/0.29) with ESMTP; Fri, 26 Mar 2010 10:54:48 +0000 X-ASF-Spam-Status: No, hits=-1142.1 required=10.0 tests=ALL_TRUSTED,AWL X-Spam-Check-By: apache.org Received: from [140.211.11.140] (HELO brutus.apache.org) (140.211.11.140) by apache.org (qpsmtpd/0.29) with ESMTP; Fri, 26 Mar 2010 10:54:47 +0000 Received: from brutus.apache.org (localhost [127.0.0.1]) by brutus.apache.org (Postfix) with ESMTP id 827CB234C4F4 for ; Fri, 26 Mar 2010 10:54:27 +0000 (UTC) Message-ID: <886333076.506971269600867533.JavaMail.jira@brutus.apache.org> Date: Fri, 26 Mar 2010 10:54:27 +0000 (UTC) From: "Amareshwari Sriramadasu (JIRA)" To: mapreduce-issues@hadoop.apache.org Subject: [jira] Commented: (MAPREDUCE-1354) Incremental enhancements to the JobTracker for better scalability In-Reply-To: <1329386169.33841262656374422.JavaMail.jira@brutus.apache.org> 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/MAPREDUCE-1354?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=12850078#action_12850078 ] Amareshwari Sriramadasu commented on MAPREDUCE-1354: ---------------------------------------------------- Shall we do the optimizations suggested at [comment|https://issues.apache.org/jira/browse/MAPREDUCE-1354?focusedCommentId=12834139&page=com.atlassian.jira.plugin.system.issuetabpanels%3Acomment-tabpanel#action_12834139] as part of the trunk patch? Or raise a jira to do the same? > Incremental enhancements to the JobTracker for better scalability > ----------------------------------------------------------------- > > Key: MAPREDUCE-1354 > URL: https://issues.apache.org/jira/browse/MAPREDUCE-1354 > Project: Hadoop Map/Reduce > Issue Type: Bug > Components: jobtracker > Reporter: Devaraj Das > Assignee: Arun C Murthy > Priority: Critical > Attachments: mapreduce-1354--2010-03-10.patch, MAPREDUCE-1354_yhadoop20.patch, MAPREDUCE-1354_yhadoop20.patch, MAPREDUCE-1354_yhadoop20.patch, MAPREDUCE-1354_yhadoop20.patch, MAPREDUCE-1354_yhadoop20.patch, MAPREDUCE-1354_yhadoop20.patch, MAPREDUCE-1354_yhadoop20.patch, mr-1354-y20.patch > > > It'd be nice to have the JobTracker object not be locked while accessing the HDFS for reading the jobconf file and while writing the jobinfo file in the submitJob method. We should see if we can avoid taking the lock altogether. -- This message is automatically generated by JIRA. - You can reply to this email to add a comment to the issue online.