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 B7E64200B40 for ; Fri, 1 Jul 2016 21:06:12 +0200 (CEST) Received: by cust-asf.ponee.io (Postfix) id B6966160A72; Fri, 1 Jul 2016 19:06:12 +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 39DAC160A4D for ; Fri, 1 Jul 2016 21:06:12 +0200 (CEST) Received: (qmail 86724 invoked by uid 500); 1 Jul 2016 19:06:11 -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 86677 invoked by uid 99); 1 Jul 2016 19:06:11 -0000 Received: from arcas.apache.org (HELO arcas) (140.211.11.28) by apache.org (qpsmtpd/0.29) with ESMTP; Fri, 01 Jul 2016 19:06:11 +0000 Received: from arcas.apache.org (localhost [127.0.0.1]) by arcas (Postfix) with ESMTP id 1DFE82C02A4 for ; Fri, 1 Jul 2016 19:06:11 +0000 (UTC) Date: Fri, 1 Jul 2016 19:06:11 +0000 (UTC) From: "Christopher Tubbs (JIRA)" To: notifications@accumulo.apache.org Message-ID: In-Reply-To: References: Subject: [jira] [Updated] (ACCUMULO-4353) Stabilize tablet assignment during transient failure MIME-Version: 1.0 Content-Type: text/plain; charset=utf-8 Content-Transfer-Encoding: 7bit X-JIRA-FingerPrint: 30527f35849b9dde25b450d4833f0394 archived-at: Fri, 01 Jul 2016 19:06:12 -0000 [ https://issues.apache.org/jira/browse/ACCUMULO-4353?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ] Christopher Tubbs updated ACCUMULO-4353: ---------------------------------------- Fix Version/s: 1.8.0 > Stabilize tablet assignment during transient failure > ---------------------------------------------------- > > Key: ACCUMULO-4353 > URL: https://issues.apache.org/jira/browse/ACCUMULO-4353 > Project: Accumulo > Issue Type: Improvement > Reporter: Shawn Walker > Assignee: Shawn Walker > Priority: Minor > Fix For: 1.8.0 > > Time Spent: 2h 40m > Remaining Estimate: 0h > > When a tablet server dies, Accumulo attempts to reassign the tablets it was hosting as quickly as possible to maintain availability. If multiple tablet servers die in quick succession, such as from a rolling restart of the Accumulo cluster or a network partition, this behavior can cause a storm of reassignment and rebalancing, placing significant load on the master. > To avert such load, Accumulo should be capable of maintaining a steady tablet assignment state in the face of transient tablet server loss. Instead of reassigning tablets as quickly as possible, Accumulo should be await the return of a temporarily downed tablet server (for some configurable duration) before assigning its tablets to other tablet servers. -- This message was sent by Atlassian JIRA (v6.3.4#6332)