From common-issues-return-23504-apmail-hadoop-common-issues-archive=hadoop.apache.org@hadoop.apache.org Thu Dec 1 06:20:05 2011 Return-Path: X-Original-To: apmail-hadoop-common-issues-archive@minotaur.apache.org Delivered-To: apmail-hadoop-common-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 1C93575EC for ; Thu, 1 Dec 2011 06:20:05 +0000 (UTC) Received: (qmail 37242 invoked by uid 500); 1 Dec 2011 06:20:04 -0000 Delivered-To: apmail-hadoop-common-issues-archive@hadoop.apache.org Received: (qmail 37200 invoked by uid 500); 1 Dec 2011 06:20:03 -0000 Mailing-List: contact common-issues-help@hadoop.apache.org; run by ezmlm Precedence: bulk List-Help: List-Unsubscribe: List-Post: List-Id: Reply-To: common-issues@hadoop.apache.org Delivered-To: mailing list common-issues@hadoop.apache.org Received: (qmail 37177 invoked by uid 99); 1 Dec 2011 06:20:02 -0000 Received: from athena.apache.org (HELO athena.apache.org) (140.211.11.136) by apache.org (qpsmtpd/0.29) with ESMTP; Thu, 01 Dec 2011 06:20:02 +0000 X-ASF-Spam-Status: No, hits=-2001.2 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; Thu, 01 Dec 2011 06:20:00 +0000 Received: from hel.zones.apache.org (hel.zones.apache.org [140.211.11.116]) by hel.zones.apache.org (Postfix) with ESMTP id 8C1C7AADFD for ; Thu, 1 Dec 2011 06:19:40 +0000 (UTC) Date: Thu, 1 Dec 2011 06:19:40 +0000 (UTC) From: "Matt Foley (Updated) (JIRA)" To: common-issues@hadoop.apache.org Message-ID: <1693287782.29787.1322720380575.JavaMail.tomcat@hel.zones.apache.org> In-Reply-To: <1341593961.6639.1322072023360.JavaMail.tomcat@hel.zones.apache.org> Subject: [jira] [Updated] (HADOOP-7854) UGI getCurrentUser is not synchronized 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-7854?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ] Matt Foley updated HADOOP-7854: ------------------------------- Target Version/s: 0.23.1, 1.0.0 (was: 1.0.0, 0.24.0) Fix Version/s: 0.23.1 Corrected Fix Versions and Target Versions to correspond to actual commits. > UGI getCurrentUser is not synchronized > -------------------------------------- > > Key: HADOOP-7854 > URL: https://issues.apache.org/jira/browse/HADOOP-7854 > Project: Hadoop Common > Issue Type: Bug > Components: security > Affects Versions: 1.0.0 > Reporter: Daryn Sharp > Assignee: Daryn Sharp > Priority: Critical > Fix For: 0.23.1, 1.0.0 > > Attachments: HADOOP-7854-trunk.patch, HADOOP-7854.patch > > > Sporadic {{ConcurrentModificationExceptions}} are originating from {{UGI.getCurrentUser}} when it needs to create a new instance. The problem was specifically observed in a JT under heavy load when a post-job cleanup is accessing the UGI while a new job is being processed. -- 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