Return-Path: X-Original-To: apmail-hadoop-hdfs-issues-archive@minotaur.apache.org Delivered-To: apmail-hadoop-hdfs-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 4A768186C4 for ; Mon, 23 Nov 2015 01:11:12 +0000 (UTC) Received: (qmail 46254 invoked by uid 500); 23 Nov 2015 01:11:11 -0000 Delivered-To: apmail-hadoop-hdfs-issues-archive@hadoop.apache.org Received: (qmail 46128 invoked by uid 500); 23 Nov 2015 01:11:11 -0000 Mailing-List: contact hdfs-issues-help@hadoop.apache.org; run by ezmlm Precedence: bulk List-Help: List-Unsubscribe: List-Post: List-Id: Reply-To: hdfs-issues@hadoop.apache.org Delivered-To: mailing list hdfs-issues@hadoop.apache.org Received: (qmail 45731 invoked by uid 99); 23 Nov 2015 01:11:11 -0000 Received: from arcas.apache.org (HELO arcas) (140.211.11.28) by apache.org (qpsmtpd/0.29) with ESMTP; Mon, 23 Nov 2015 01:11:11 +0000 Received: from arcas.apache.org (localhost [127.0.0.1]) by arcas (Postfix) with ESMTP id 439042C1F57 for ; Mon, 23 Nov 2015 01:11:11 +0000 (UTC) Date: Mon, 23 Nov 2015 01:11:11 +0000 (UTC) From: "Hudson (JIRA)" To: hdfs-issues@hadoop.apache.org Message-ID: In-Reply-To: References: Subject: [jira] [Commented] (HDFS-8914) Document HA support in the HDFS HdfsDesign.md 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/HDFS-8914?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15021311#comment-15021311 ] Hudson commented on HDFS-8914: ------------------------------ FAILURE: Integrated in Hadoop-Mapreduce-trunk #2637 (See [https://builds.apache.org/job/Hadoop-Mapreduce-trunk/2637/]) HDFS-8914. Document HA support in the HDFS HdfsDesign.md. Contributed by (wheat9: rev 0c7340f377f6663052be097ef58d60eee25f7334) * hadoop-hdfs-project/hadoop-hdfs/CHANGES.txt * hadoop-hdfs-project/hadoop-hdfs/src/site/markdown/HdfsDesign.md > Document HA support in the HDFS HdfsDesign.md > --------------------------------------------- > > Key: HDFS-8914 > URL: https://issues.apache.org/jira/browse/HDFS-8914 > Project: Hadoop HDFS > Issue Type: Bug > Components: documentation > Affects Versions: 2.7.1 > Environment: Documentation page in live > Reporter: Ravindra Babu > Assignee: Lars Francke > Priority: Trivial > Fix For: 2.8.0 > > Attachments: HDFS-8914.1.patch, HDFS-8914.2.patch > > > Please refer to these two links and correct one of them. > http://hadoop.apache.org/docs/r2.7.1/hadoop-project-dist/hadoop-hdfs/HdfsDesign.html > The NameNode machine is a single point of failure for an HDFS cluster. If the NameNode machine fails, manual intervention is necessary. Currently, automatic restart and failover of the NameNode software to another machine is not supported. > http://hadoop.apache.org/docs/r2.7.1/hadoop-project-dist/hadoop-hdfs/HDFSHighAvailabilityWithQJM.html > The HDFS High Availability feature addresses the above problems by providing the option of running two redundant NameNodes in the same cluster in an Active/Passive configuration with a hot standby. This allows a fast failover to a new NameNode in the case that a machine crashes, or a graceful administrator-initiated failover for the purpose of planned maintenance. > Please update hdfsDesign article with same facts to avoid confusion in Reader's mind.. -- This message was sent by Atlassian JIRA (v6.3.4#6332)