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 0807911464 for ; Fri, 4 Jul 2014 09:03:35 +0000 (UTC) Received: (qmail 90602 invoked by uid 500); 4 Jul 2014 09:03:34 -0000 Delivered-To: apmail-hadoop-yarn-issues-archive@hadoop.apache.org Received: (qmail 90559 invoked by uid 500); 4 Jul 2014 09:03:34 -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 90542 invoked by uid 99); 4 Jul 2014 09:03:34 -0000 Received: from arcas.apache.org (HELO arcas.apache.org) (140.211.11.28) by apache.org (qpsmtpd/0.29) with ESMTP; Fri, 04 Jul 2014 09:03:34 +0000 Date: Fri, 4 Jul 2014 09:03:34 +0000 (UTC) From: "Junping Du (JIRA)" To: yarn-issues@hadoop.apache.org Message-ID: In-Reply-To: References: Subject: [jira] [Commented] (YARN-2251) Avoid negative elapsed time in JHS/MRAM web UI and services 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-2251?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=14052278#comment-14052278 ] Junping Du commented on YARN-2251: ---------------------------------- Kick off Jenkins test again. > Avoid negative elapsed time in JHS/MRAM web UI and services > ----------------------------------------------------------- > > Key: YARN-2251 > URL: https://issues.apache.org/jira/browse/YARN-2251 > Project: Hadoop YARN > Issue Type: Bug > Reporter: Zhijie Shen > Assignee: Zhijie Shen > Attachments: MAPREDUCE-5940.1.patch, MAPREDUCE-5940.2.patch > > > Recently we observed a rare bug that an elapsed time of a reducer is going to be negative on JHS web UI and via REST APIs. While the real reason for this bug seems to be clock asynchronization on different hosts, the web frontend should have masked the negative values. However, in the current code, *org.apache.hadoop.mapreduce.v2.app.webapp.dao.** only check whether the elapsed time is -1 or not. -- This message was sent by Atlassian JIRA (v6.2#6252)