Return-Path: X-Original-To: apmail-hadoop-mapreduce-issues-archive@minotaur.apache.org Delivered-To: apmail-hadoop-mapreduce-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 4386C17AE7 for ; Fri, 1 May 2015 17:58:07 +0000 (UTC) Received: (qmail 54632 invoked by uid 500); 1 May 2015 17:58:07 -0000 Delivered-To: apmail-hadoop-mapreduce-issues-archive@hadoop.apache.org Received: (qmail 54569 invoked by uid 500); 1 May 2015 17:58:07 -0000 Mailing-List: contact mapreduce-issues-help@hadoop.apache.org; run by ezmlm Precedence: bulk List-Help: List-Unsubscribe: List-Post: List-Id: Reply-To: mapreduce-issues@hadoop.apache.org Delivered-To: mailing list mapreduce-issues@hadoop.apache.org Received: (qmail 54558 invoked by uid 99); 1 May 2015 17:58:06 -0000 Received: from arcas.apache.org (HELO arcas.apache.org) (140.211.11.28) by apache.org (qpsmtpd/0.29) with ESMTP; Fri, 01 May 2015 17:58:06 +0000 Date: Fri, 1 May 2015 17:58:06 +0000 (UTC) From: "Ray Chiang (JIRA)" To: mapreduce-issues@hadoop.apache.org Message-ID: In-Reply-To: References: Subject: [jira] [Commented] (MAPREDUCE-6222) HistoryServer Hangs Processing Large Jobs 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/MAPREDUCE-6222?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=14523534#comment-14523534 ] Ray Chiang commented on MAPREDUCE-6222: --------------------------------------- RE: checkstyle Static variable declarations match existing member variables. > HistoryServer Hangs Processing Large Jobs > ----------------------------------------- > > Key: MAPREDUCE-6222 > URL: https://issues.apache.org/jira/browse/MAPREDUCE-6222 > Project: Hadoop Map/Reduce > Issue Type: Bug > Reporter: Andrew Johnson > Assignee: Ray Chiang > Attachments: JHS New Display Top.png, JHS Original Display Top.png, MAPREDUCE-6222.001.patch, MAPREDUCE-6222.002.patch, MAPREDUCE-6222.003.patch, MAPREDUCE-6222.005.patch, MAPREDUCE-6222.006.patch, head.jhist, historyserver_jstack.txt > > > I'm encountering an issue with the Mapreduce HistoryServer processing the history files for large jobs. This has come up several times with for jobs with around 60000 total tasks. When the HistoryServer loads the .jhist file from HDFS for a job of that size (which is usually around 500 Mb), the HistoryServer's CPU usage spiked and the UI became unresponsive. After about 10 minutes I restarted the HistoryServer and it was behaving normally again. > The cluster is running CDH 5.3 (2.5.0-cdh5.3.0). I've attached the output of jstack from a time this was occurring. -- This message was sent by Atlassian JIRA (v6.3.4#6332)