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 03E7E18B08 for ; Mon, 18 Apr 2016 14:12:32 +0000 (UTC) Received: (qmail 48647 invoked by uid 500); 18 Apr 2016 14:12:31 -0000 Delivered-To: apmail-accumulo-notifications-archive@accumulo.apache.org Received: (qmail 48611 invoked by uid 500); 18 Apr 2016 14:12:31 -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 48600 invoked by uid 99); 18 Apr 2016 14:12:31 -0000 Received: from arcas.apache.org (HELO arcas) (140.211.11.28) by apache.org (qpsmtpd/0.29) with ESMTP; Mon, 18 Apr 2016 14:12:31 +0000 Received: from arcas.apache.org (localhost [127.0.0.1]) by arcas (Postfix) with ESMTP id 026BF2C1F60 for ; Mon, 18 Apr 2016 14:12:26 +0000 (UTC) Date: Mon, 18 Apr 2016 14:12:26 +0000 (UTC) From: "ASF GitHub Bot (JIRA)" To: notifications@accumulo.apache.org Message-ID: In-Reply-To: References: Subject: [jira] [Commented] (ACCUMULO-4187) Rate limiting of major compactions 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-4187?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15245723#comment-15245723 ] ASF GitHub Bot commented on ACCUMULO-4187: ------------------------------------------ Github user keith-turner commented on the pull request: https://github.com/apache/accumulo/pull/90#issuecomment-211398304 @ShawnWalker I suspect the issue you fixed that was causing ShellServerIT to fail was introduced by ACCUMULO-1755 > Rate limiting of major compactions > ---------------------------------- > > Key: ACCUMULO-4187 > URL: https://issues.apache.org/jira/browse/ACCUMULO-4187 > Project: Accumulo > Issue Type: Improvement > Components: core, tserver > Reporter: Shawn Walker > Assignee: Shawn Walker > Priority: Minor > Fix For: 1.8.0 > > > In discussing [ACCUMULO-4166] with Keith Turner, we decided that the underlying issue is that major compactions can overwhelm a tablet server, rendering it nearly unresponsive. > To address this, we should take a cue from Apache Cassandra and restrict how quickly we perform major compactions. Rate limiting reads and writes involved in major compactions will directly affect the IO load caused by major compactions, and should also indirectly affect the CPU load. -- This message was sent by Atlassian JIRA (v6.3.4#6332)