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 A9D6619747 for ; Thu, 21 Apr 2016 06:38:26 +0000 (UTC) Received: (qmail 68964 invoked by uid 500); 21 Apr 2016 06:38:26 -0000 Delivered-To: apmail-hadoop-yarn-issues-archive@hadoop.apache.org Received: (qmail 68919 invoked by uid 500); 21 Apr 2016 06:38:26 -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 68902 invoked by uid 99); 21 Apr 2016 06:38:26 -0000 Received: from arcas.apache.org (HELO arcas) (140.211.11.28) by apache.org (qpsmtpd/0.29) with ESMTP; Thu, 21 Apr 2016 06:38:26 +0000 Received: from arcas.apache.org (localhost [127.0.0.1]) by arcas (Postfix) with ESMTP id A7E5F2C1F73 for ; Thu, 21 Apr 2016 06:38:25 +0000 (UTC) Date: Thu, 21 Apr 2016 06:38:25 +0000 (UTC) From: "David Watzke (JIRA)" To: yarn-issues@hadoop.apache.org Message-ID: In-Reply-To: References: Subject: [jira] [Commented] (YARN-1458) FairScheduler: Zero weight can lead to livelock MIME-Version: 1.0 Content-Type: text/plain; charset=utf-8 Content-Transfer-Encoding: quoted-printable X-JIRA-FingerPrint: 30527f35849b9dde25b450d4833f0394 [ https://issues.apache.org/jira/browse/YARN-1458?page=3Dcom.atlassian.= jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=3D15251= 386#comment-15251386 ]=20 David Watzke commented on YARN-1458: ------------------------------------ [~zxu] Thanks very much for looking into this, however I won't be able to t= est this anytime soon - it only happened once on our production cluster und= er a heavy load and we can't afford any planned outage there right now. > FairScheduler: Zero weight can lead to livelock > ----------------------------------------------- > > Key: YARN-1458 > URL: https://issues.apache.org/jira/browse/YARN-1458 > Project: Hadoop YARN > Issue Type: Bug > Components: scheduler > Affects Versions: 2.2.0 > Environment: Centos 2.6.18-238.19.1.el5 X86_64 > hadoop2.2.0 > Reporter: qingwu.fu > Assignee: zhihai xu > Fix For: 2.6.0 > > Attachments: YARN-1458.001.patch, YARN-1458.002.patch, YARN-1458.= 003.patch, YARN-1458.004.patch, YARN-1458.006.patch, YARN-1458.addendum.pat= ch, YARN-1458.alternative0.patch, YARN-1458.alternative1.patch, YARN-1458.a= lternative2.patch, YARN-1458.patch, yarn-1458-5.patch, yarn-1458-7.patch, y= arn-1458-8.patch > > Original Estimate: 408h > Remaining Estimate: 408h > > The ResourceManager$SchedulerEventDispatcher$EventProcessor blocked when = clients submit lots jobs, it is not easy to reapear. We run the test cluste= r for days to reapear it. The output of jstack command on resourcemanager = pid: > {code} > "ResourceManager Event Processor" prio=3D10 tid=3D0x00002aaab0c5f000 nid= =3D0x5dd3 waiting for monitor entry [0x0000000043aa9000] > java.lang.Thread.State: BLOCKED (on object monitor) > at org.apache.hadoop.yarn.server.resourcemanager.scheduler.fair.F= airScheduler.removeApplication(FairScheduler.java:671) > - waiting to lock <0x000000070026b6e0> (a org.apache.hadoop.yarn.= server.resourcemanager.scheduler.fair.FairScheduler) > at org.apache.hadoop.yarn.server.resourcemanager.scheduler.fair.F= airScheduler.handle(FairScheduler.java:1023) > at org.apache.hadoop.yarn.server.resourcemanager.scheduler.fair.F= airScheduler.handle(FairScheduler.java:112) > at org.apache.hadoop.yarn.server.resourcemanager.ResourceManager$= SchedulerEventDispatcher$EventProcessor.run(ResourceManager.java:440) > at java.lang.Thread.run(Thread.java:744) > =E2=80=A6=E2=80=A6 > "FairSchedulerUpdateThread" daemon prio=3D10 tid=3D0x00002aaab0a2c800 nid= =3D0x5dc8 runnable [0x00000000433a2000] > java.lang.Thread.State: RUNNABLE > at org.apache.hadoop.yarn.server.resourcemanager.scheduler.fair.F= airScheduler.getAppWeight(FairScheduler.java:545) > - locked <0x000000070026b6e0> (a org.apache.hadoop.yarn.server.re= sourcemanager.scheduler.fair.FairScheduler) > at org.apache.hadoop.yarn.server.resourcemanager.scheduler.fair.A= ppSchedulable.getWeights(AppSchedulable.java:129) > at org.apache.hadoop.yarn.server.resourcemanager.scheduler.fair.p= olicies.ComputeFairShares.computeShare(ComputeFairShares.java:143) > at org.apache.hadoop.yarn.server.resourcemanager.scheduler.fair.p= olicies.ComputeFairShares.resourceUsedWithWeightToResourceRatio(ComputeFair= Shares.java:131) > at org.apache.hadoop.yarn.server.resourcemanager.scheduler.fair.p= olicies.ComputeFairShares.computeShares(ComputeFairShares.java:102) > at org.apache.hadoop.yarn.server.resourcemanager.scheduler.fair.p= olicies.FairSharePolicy.computeShares(FairSharePolicy.java:119) > at org.apache.hadoop.yarn.server.resourcemanager.scheduler.fair.F= SLeafQueue.recomputeShares(FSLeafQueue.java:100) > at org.apache.hadoop.yarn.server.resourcemanager.scheduler.fair.F= SParentQueue.recomputeShares(FSParentQueue.java:62) > at org.apache.hadoop.yarn.server.resourcemanager.scheduler.fair.F= airScheduler.update(FairScheduler.java:282) > - locked <0x000000070026b6e0> (a org.apache.hadoop.yarn.server.re= sourcemanager.scheduler.fair.FairScheduler) > at org.apache.hadoop.yarn.server.resourcemanager.scheduler.fair.F= airScheduler$UpdateThread.run(FairScheduler.java:255) > at java.lang.Thread.run(Thread.java:744) > {code} -- This message was sent by Atlassian JIRA (v6.3.4#6332)