From hdfs-issues-return-52667-apmail-hadoop-hdfs-issues-archive=hadoop.apache.org@hadoop.apache.org Fri Nov 9 10:48:24 2012 Return-Path: X-Original-To: apmail-hadoop-hdfs-issues-archive@minotaur.apache.org Delivered-To: apmail-hadoop-hdfs-issues-archive@minotaur.apache.org Received: from mail.apache.org (hermes.apache.org [140.211.11.3]) by minotaur.apache.org (Postfix) with SMTP id 083B8D918 for ; Fri, 9 Nov 2012 10:48:24 +0000 (UTC) Received: (qmail 14547 invoked by uid 500); 9 Nov 2012 10:48:23 -0000 Delivered-To: apmail-hadoop-hdfs-issues-archive@hadoop.apache.org Received: (qmail 14467 invoked by uid 500); 9 Nov 2012 10:48:23 -0000 Mailing-List: contact hdfs-issues-help@hadoop.apache.org; run by ezmlm Precedence: bulk List-Help: List-Unsubscribe: List-Post: List-Id: Reply-To: hdfs-issues@hadoop.apache.org Delivered-To: mailing list hdfs-issues@hadoop.apache.org Received: (qmail 14457 invoked by uid 99); 9 Nov 2012 10:48:23 -0000 Received: from arcas.apache.org (HELO arcas.apache.org) (140.211.11.28) by apache.org (qpsmtpd/0.29) with ESMTP; Fri, 09 Nov 2012 10:48:23 +0000 Date: Fri, 9 Nov 2012 10:48:23 +0000 (UTC) From: "Hudson (JIRA)" To: hdfs-issues@hadoop.apache.org Message-ID: <1724532117.91276.1352458103410.JavaMail.jiratomcat@arcas> In-Reply-To: <1303623794.139118.1348839667808.JavaMail.jiratomcat@arcas> Subject: [jira] [Commented] (HDFS-3990) NN's health report has severe performance problems 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/HDFS-3990?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13493904#comment-13493904 ] Hudson commented on HDFS-3990: ------------------------------ Integrated in Hadoop-Yarn-trunk #31 (See [https://builds.apache.org/job/Hadoop-Yarn-trunk/31/]) HDFS-3990. NN's health report has severe performance problems (daryn) (Revision 1407333) Result = SUCCESS daryn : http://svn.apache.org/viewcvs.cgi/?root=Apache-SVN&view=rev&rev=1407333 Files : * /hadoop/common/trunk/hadoop-hdfs-project/hadoop-hdfs/CHANGES.txt * /hadoop/common/trunk/hadoop-hdfs-project/hadoop-hdfs/src/main/java/org/apache/hadoop/hdfs/protocol/DatanodeID.java * /hadoop/common/trunk/hadoop-hdfs-project/hadoop-hdfs/src/main/java/org/apache/hadoop/hdfs/server/blockmanagement/DatanodeManager.java * /hadoop/common/trunk/hadoop-hdfs-project/hadoop-hdfs/src/test/java/org/apache/hadoop/hdfs/TestDatanodeRegistration.java > NN's health report has severe performance problems > -------------------------------------------------- > > Key: HDFS-3990 > URL: https://issues.apache.org/jira/browse/HDFS-3990 > Project: Hadoop HDFS > Issue Type: Bug > Components: name-node > Affects Versions: 0.23.0, 2.0.0-alpha, 3.0.0 > Reporter: Daryn Sharp > Assignee: Daryn Sharp > Priority: Critical > Fix For: 3.0.0, 2.0.3-alpha, 0.23.5 > > Attachments: HDFS-3990.branch-0.23.patch, HDFS-3990.branch-0.23.patch, HDFS-3990.patch, HDFS-3990.patch, HDFS-3990.patch, HDFS-3990.patch, HDFS-3990.patch, HDFS-3990.patch, HDFS-3990.patch, HDFS-3990.patch, hdfs-3990.txt, hdfs-3990.txt > > > The dfshealth page will place a read lock on the namespace while it does a dns lookup for every DN. On a multi-thousand node cluster, this often results in 10s+ load time for the health page. 10 concurrent requests were found to cause 7m+ load times during which time write operations blocked. -- This message is automatically generated by JIRA. If you think it was sent incorrectly, please contact your JIRA administrators For more information on JIRA, see: http://www.atlassian.com/software/jira