Return-Path: X-Original-To: apmail-hadoop-yarn-issues-archive@minotaur.apache.org Delivered-To: apmail-hadoop-yarn-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 9C09E10E84 for ; Thu, 13 Feb 2014 11:15:51 +0000 (UTC) Received: (qmail 97576 invoked by uid 500); 13 Feb 2014 11:15:45 -0000 Delivered-To: apmail-hadoop-yarn-issues-archive@hadoop.apache.org Received: (qmail 97465 invoked by uid 500); 13 Feb 2014 11:15:42 -0000 Mailing-List: contact yarn-issues-help@hadoop.apache.org; run by ezmlm Precedence: bulk List-Help: List-Unsubscribe: List-Post: List-Id: Reply-To: yarn-issues@hadoop.apache.org Delivered-To: mailing list yarn-issues@hadoop.apache.org Received: (qmail 96300 invoked by uid 99); 13 Feb 2014 11:15:35 -0000 Received: from arcas.apache.org (HELO arcas.apache.org) (140.211.11.28) by apache.org (qpsmtpd/0.29) with ESMTP; Thu, 13 Feb 2014 11:15:35 +0000 Date: Thu, 13 Feb 2014 11:15:34 +0000 (UTC) From: "Hudson (JIRA)" To: yarn-issues@hadoop.apache.org Message-ID: In-Reply-To: References: Subject: [jira] [Commented] (YARN-1692) ConcurrentModificationException in fair scheduler AppSchedulable 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/YARN-1692?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13900230#comment-13900230 ] Hudson commented on YARN-1692: ------------------------------ SUCCESS: Integrated in Hadoop-Yarn-trunk #480 (See [https://builds.apache.org/job/Hadoop-Yarn-trunk/480/]) Move YARN-1692 in CHANGES.txt (sandy: http://svn.apache.org/viewcvs.cgi/?root=Apache-SVN&view=rev&rev=1567793) * /hadoop/common/trunk/hadoop-yarn-project/CHANGES.txt YARN-1692. ConcurrentModificationException in fair scheduler AppSchedulable (Sangjin Lee via Sandy Ryza) (sandy: http://svn.apache.org/viewcvs.cgi/?root=Apache-SVN&view=rev&rev=1567788) * /hadoop/common/trunk/hadoop-yarn-project/CHANGES.txt * /hadoop/common/trunk/hadoop-yarn-project/hadoop-yarn/hadoop-yarn-server/hadoop-yarn-server-resourcemanager/src/main/java/org/apache/hadoop/yarn/server/resourcemanager/scheduler/SchedulerApplicationAttempt.java * /hadoop/common/trunk/hadoop-yarn-project/hadoop-yarn/hadoop-yarn-server/hadoop-yarn-server-resourcemanager/src/main/java/org/apache/hadoop/yarn/server/resourcemanager/scheduler/common/fica/FiCaSchedulerApp.java * /hadoop/common/trunk/hadoop-yarn-project/hadoop-yarn/hadoop-yarn-server/hadoop-yarn-server-resourcemanager/src/main/java/org/apache/hadoop/yarn/server/resourcemanager/scheduler/fair/AppSchedulable.java > ConcurrentModificationException in fair scheduler AppSchedulable > ---------------------------------------------------------------- > > Key: YARN-1692 > URL: https://issues.apache.org/jira/browse/YARN-1692 > Project: Hadoop YARN > Issue Type: Bug > Components: scheduler > Affects Versions: 2.0.5-alpha > Reporter: Sangjin Lee > Assignee: Sangjin Lee > Fix For: 2.4.0 > > Attachments: yarn-1692-branch-2.3.patch, yarn-1692.patch > > > We saw a ConcurrentModificationException thrown in the fair scheduler: > {noformat} > 2014-02-07 01:40:01,978 ERROR org.apache.hadoop.yarn.server.resourcemanager.scheduler.fair.FairScheduler: Exception in fair scheduler UpdateThread > java.util.ConcurrentModificationException > at java.util.HashMap$HashIterator.nextEntry(HashMap.java:926) > at java.util.HashMap$ValueIterator.next(HashMap.java:954) > at org.apache.hadoop.yarn.server.resourcemanager.scheduler.fair.AppSchedulable.updateDemand(AppSchedulable.java:85) > at org.apache.hadoop.yarn.server.resourcemanager.scheduler.fair.FSLeafQueue.updateDemand(FSLeafQueue.java:125) > at org.apache.hadoop.yarn.server.resourcemanager.scheduler.fair.FSParentQueue.updateDemand(FSParentQueue.java:82) > at org.apache.hadoop.yarn.server.resourcemanager.scheduler.fair.FairScheduler.update(FairScheduler.java:217) > at org.apache.hadoop.yarn.server.resourcemanager.scheduler.fair.FairScheduler$UpdateThread.run(FairScheduler.java:195) > at java.lang.Thread.run(Thread.java:724) > {noformat} > The map that gets returned by FSSchedulerApp.getResourceRequests() are iterated on without proper synchronization. -- This message was sent by Atlassian JIRA (v6.1.5#6160)