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 DF6917850 for ; Wed, 17 Aug 2011 16:06:50 +0000 (UTC) Received: (qmail 28880 invoked by uid 500); 17 Aug 2011 16:06:50 -0000 Delivered-To: apmail-hadoop-hdfs-issues-archive@hadoop.apache.org Received: (qmail 28787 invoked by uid 500); 17 Aug 2011 16:06:50 -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 28741 invoked by uid 99); 17 Aug 2011 16:06:49 -0000 Received: from athena.apache.org (HELO athena.apache.org) (140.211.11.136) by apache.org (qpsmtpd/0.29) with ESMTP; Wed, 17 Aug 2011 16:06:49 +0000 X-ASF-Spam-Status: No, hits=-2001.1 required=5.0 tests=ALL_TRUSTED,RP_MATCHES_RCVD X-Spam-Check-By: apache.org Received: from [140.211.11.116] (HELO hel.zones.apache.org) (140.211.11.116) by apache.org (qpsmtpd/0.29) with ESMTP; Wed, 17 Aug 2011 16:06:48 +0000 Received: from hel.zones.apache.org (hel.zones.apache.org [140.211.11.116]) by hel.zones.apache.org (Postfix) with ESMTP id 6A90FC040D for ; Wed, 17 Aug 2011 16:06:28 +0000 (UTC) Date: Wed, 17 Aug 2011 16:06:28 +0000 (UTC) From: "Tsz Wo (Nicholas), SZE (JIRA)" To: hdfs-issues@hadoop.apache.org Message-ID: <881647670.45686.1313597188432.JavaMail.tomcat@hel.zones.apache.org> Subject: [jira] [Commented] (HDFS-1257) Race condition on FSNamesystem#recentInvalidateSets introduced by HADOOP-5124 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-1257?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13086423#comment-13086423 ] Tsz Wo (Nicholas), SZE commented on HDFS-1257: ---------------------------------------------- > ... 1) you are seeing this error ... The error is in the Jenkins machine. Here is the link https://builds.apache.org/job/PreCommit-HDFS-Build/1107/testReport/org.apache.hadoop.hdfs/TestProtectedBlockManager/testProtectedBlockManager/ > Race condition on FSNamesystem#recentInvalidateSets introduced by HADOOP-5124 > ----------------------------------------------------------------------------- > > Key: HDFS-1257 > URL: https://issues.apache.org/jira/browse/HDFS-1257 > Project: Hadoop HDFS > Issue Type: Bug > Components: name-node > Affects Versions: 0.23.0 > Reporter: Ramkumar Vadali > Assignee: Eric Payne > Fix For: 0.23.0 > > Attachments: HDFS-1257.1.20110810.patch, HDFS-1257.2.20110812.patch, HDFS-1257.3.20110815.patch, HDFS-1257.4.20110816.patch, HDFS-1257.patch > > > HADOOP-5124 provided some improvements to FSNamesystem#recentInvalidateSets. But it introduced unprotected access to the data structure recentInvalidateSets. Specifically, FSNamesystem.computeInvalidateWork accesses recentInvalidateSets without read-lock protection. If there is concurrent activity (like reducing replication on a file) that adds to recentInvalidateSets, the name-node crashes with a ConcurrentModificationException. -- This message is automatically generated by JIRA. For more information on JIRA, see: http://www.atlassian.com/software/jira