Return-Path: X-Original-To: archive-asf-public-internal@cust-asf2.ponee.io Delivered-To: archive-asf-public-internal@cust-asf2.ponee.io Received: from cust-asf.ponee.io (cust-asf.ponee.io [163.172.22.183]) by cust-asf2.ponee.io (Postfix) with ESMTP id 16F75200B71 for ; Wed, 17 Aug 2016 06:06:23 +0200 (CEST) Received: by cust-asf.ponee.io (Postfix) id 156AD160ABA; Wed, 17 Aug 2016 04:06:23 +0000 (UTC) Delivered-To: archive-asf-public@cust-asf.ponee.io Received: from mail.apache.org (hermes.apache.org [140.211.11.3]) by cust-asf.ponee.io (Postfix) with SMTP id 5D71C160AA8 for ; Wed, 17 Aug 2016 06:06:22 +0200 (CEST) Received: (qmail 60608 invoked by uid 500); 17 Aug 2016 04:06:21 -0000 Mailing-List: contact hdfs-issues-help@hadoop.apache.org; run by ezmlm Precedence: bulk List-Help: List-Unsubscribe: List-Post: List-Id: Delivered-To: mailing list hdfs-issues@hadoop.apache.org Received: (qmail 60571 invoked by uid 99); 17 Aug 2016 04:06:21 -0000 Received: from arcas.apache.org (HELO arcas) (140.211.11.28) by apache.org (qpsmtpd/0.29) with ESMTP; Wed, 17 Aug 2016 04:06:21 +0000 Received: from arcas.apache.org (localhost [127.0.0.1]) by arcas (Postfix) with ESMTP id 0B9632C02A1 for ; Wed, 17 Aug 2016 04:06:21 +0000 (UTC) Date: Wed, 17 Aug 2016 04:06:21 +0000 (UTC) From: "Vincent Huang (JIRA)" To: hdfs-issues@hadoop.apache.org Message-ID: In-Reply-To: References: Subject: [jira] [Commented] (HDFS-8161) Both Namenodes are in standby State MIME-Version: 1.0 Content-Type: text/plain; charset=utf-8 Content-Transfer-Encoding: 7bit X-JIRA-FingerPrint: 30527f35849b9dde25b450d4833f0394 archived-at: Wed, 17 Aug 2016 04:06:23 -0000 [ https://issues.apache.org/jira/browse/HDFS-8161?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15423847#comment-15423847 ] Vincent Huang commented on HDFS-8161: ------------------------------------- Sorry, I forgot to mention the precondition. I had moved one NameNode and zookeeper to the other node (original node is dead) and then restart both NameNode. > Both Namenodes are in standby State > ----------------------------------- > > Key: HDFS-8161 > URL: https://issues.apache.org/jira/browse/HDFS-8161 > Project: Hadoop HDFS > Issue Type: Bug > Components: auto-failover > Affects Versions: 2.6.0 > Reporter: Brahma Reddy Battula > Assignee: Brahma Reddy Battula > Attachments: ACTIVEBreadcumb and StandbyElector.txt > > > Suspected Scenario: > ================ > Start cluster with three Nodes. > Reboot Machine where ZKFC is not running..( Here Active Node ZKFC should open session with this ZK ) > Now ZKFC ( Active NN's ) session expire and try re-establish connection with another ZK...Bythe time ZKFC ( StndBy NN's ) will try to fence old active and create the active Breadcrumb and Makes SNN to active state.. > But immediately it fence to standby state.. ( Here is the doubt) > Hence both will be in standby state.. -- This message was sent by Atlassian JIRA (v6.3.4#6332) --------------------------------------------------------------------- To unsubscribe, e-mail: hdfs-issues-unsubscribe@hadoop.apache.org For additional commands, e-mail: hdfs-issues-help@hadoop.apache.org