Return-Path: X-Original-To: apmail-accumulo-notifications-archive@minotaur.apache.org Delivered-To: apmail-accumulo-notifications-archive@minotaur.apache.org Received: from mail.apache.org (hermes.apache.org [140.211.11.3]) by minotaur.apache.org (Postfix) with SMTP id 3185310875 for ; Fri, 14 Mar 2014 21:46:46 +0000 (UTC) Received: (qmail 72967 invoked by uid 500); 14 Mar 2014 21:46:44 -0000 Delivered-To: apmail-accumulo-notifications-archive@accumulo.apache.org Received: (qmail 72921 invoked by uid 500); 14 Mar 2014 21:46:44 -0000 Mailing-List: contact notifications-help@accumulo.apache.org; run by ezmlm Precedence: bulk List-Help: List-Unsubscribe: List-Post: List-Id: Reply-To: jira@apache.org Delivered-To: mailing list notifications@accumulo.apache.org Received: (qmail 72910 invoked by uid 99); 14 Mar 2014 21:46:43 -0000 Received: from arcas.apache.org (HELO arcas.apache.org) (140.211.11.28) by apache.org (qpsmtpd/0.29) with ESMTP; Fri, 14 Mar 2014 21:46:43 +0000 Date: Fri, 14 Mar 2014 21:46:43 +0000 (UTC) From: "Sean Busbey (JIRA)" To: notifications@accumulo.apache.org Message-ID: In-Reply-To: References: Subject: [jira] [Commented] (ACCUMULO-2481) Monitor should still work if HDFS + Zookeeper go away 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/ACCUMULO-2481?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13935709#comment-13935709 ] Sean Busbey commented on ACCUMULO-2481: --------------------------------------- For completeness, I left pages loading with a shut down hdfs + zk for 10 minutes. After I restarted hdfs and zk services, the monitor pages all loaded. logs showed message from most services claiming zk problems and intent to retry. Everyone recovered and appeared to function normally again after. > Monitor should still work if HDFS + Zookeeper go away > ----------------------------------------------------- > > Key: ACCUMULO-2481 > URL: https://issues.apache.org/jira/browse/ACCUMULO-2481 > Project: Accumulo > Issue Type: Bug > Components: monitor > Affects Versions: 1.4.4, 1.4.5 > Environment: 1.4.5-SNAPSHOT on CDH4.5.0. > Non-HA cluster with 2 workers and a single Zookeeper server. > Reporter: Sean Busbey > Priority: Minor > Fix For: 1.4.6 > > > While preparing to update a test cluster, I accidentally attempted to refresh some monitor pages after I had shut down the underlying HDFS and Zookeeper services. The page simply hung. I've since tried loading several different pages (overview, logs, master view) and all simple hang on the monitor's end. If I restart the underlying cluster, the pages resolve like normal. > I haven't had a chance to see if this happens on later versions, nor figure out which missing component matters. > Expected behavior would be for the monitor to still load, albeit with a bunch of alarm bells about everything being off. -- This message was sent by Atlassian JIRA (v6.2#6252)