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 3A98D200B73 for ; Mon, 29 Aug 2016 21:44:22 +0200 (CEST) Received: by cust-asf.ponee.io (Postfix) id 3924D160A89; Mon, 29 Aug 2016 19:44:22 +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 AFCA7160AC8 for ; Mon, 29 Aug 2016 21:44:21 +0200 (CEST) Received: (qmail 28802 invoked by uid 500); 29 Aug 2016 19:44:20 -0000 Mailing-List: contact issues-help@ambari.apache.org; run by ezmlm Precedence: bulk List-Help: List-Unsubscribe: List-Post: List-Id: Reply-To: dev@ambari.apache.org Delivered-To: mailing list issues@ambari.apache.org Received: (qmail 28780 invoked by uid 99); 29 Aug 2016 19:44:20 -0000 Received: from arcas.apache.org (HELO arcas) (140.211.11.28) by apache.org (qpsmtpd/0.29) with ESMTP; Mon, 29 Aug 2016 19:44:20 +0000 Received: from arcas.apache.org (localhost [127.0.0.1]) by arcas (Postfix) with ESMTP id 871292C0152 for ; Mon, 29 Aug 2016 19:44:20 +0000 (UTC) Date: Mon, 29 Aug 2016 19:44:20 +0000 (UTC) From: "Jonathan Hurley (JIRA)" To: issues@ambari.apache.org Message-ID: In-Reply-To: References: Subject: [jira] [Updated] (AMBARI-18271) Multiple Aggregate Alerts For JournalNode Exist With Some Being Incorrect MIME-Version: 1.0 Content-Type: text/plain; charset=utf-8 Content-Transfer-Encoding: 7bit X-JIRA-FingerPrint: 30527f35849b9dde25b450d4833f0394 archived-at: Mon, 29 Aug 2016 19:44:22 -0000 [ https://issues.apache.org/jira/browse/AMBARI-18271?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ] Jonathan Hurley updated AMBARI-18271: ------------------------------------- Attachment: AMBARI-18271.patch > Multiple Aggregate Alerts For JournalNode Exist With Some Being Incorrect > ------------------------------------------------------------------------- > > Key: AMBARI-18271 > URL: https://issues.apache.org/jira/browse/AMBARI-18271 > Project: Ambari > Issue Type: Bug > Components: ambari-server > Affects Versions: 2.0.0 > Reporter: Jonathan Hurley > Assignee: Jonathan Hurley > Priority: Critical > Fix For: trunk > > Attachments: AMBARI-18271.patch > > > When a cluster is being created initially, there are many new alert instances being generated concurrently. This can lead to a race condition where certain alert types, such as aggregate alerts, fire several events and end up creating duplicate alert instances. > Although aggregate alerts are the most common, the flaw is in the alert listener since it never guarantees uniqueness even though it supports concurrent events. > This problem is mainly encountered when the cluster is initially created, and therefore a solution shouldn't impact the rest of the cluster's lifetime. In other words, we shouldn't cause a degradation the other 99.9% of the time in order to fix this problem. -- This message was sent by Atlassian JIRA (v6.3.4#6332)