Return-Path: X-Original-To: apmail-hadoop-yarn-issues-archive@minotaur.apache.org Delivered-To: apmail-hadoop-yarn-issues-archive@minotaur.apache.org Received: from mail.apache.org (hermes.apache.org [140.211.11.3]) by minotaur.apache.org (Postfix) with SMTP id C6D7EF5B2 for ; Fri, 12 Apr 2013 05:21:17 +0000 (UTC) Received: (qmail 55841 invoked by uid 500); 12 Apr 2013 05:21:16 -0000 Delivered-To: apmail-hadoop-yarn-issues-archive@hadoop.apache.org Received: (qmail 55734 invoked by uid 500); 12 Apr 2013 05:21:16 -0000 Mailing-List: contact yarn-issues-help@hadoop.apache.org; run by ezmlm Precedence: bulk List-Help: List-Unsubscribe: List-Post: List-Id: Reply-To: yarn-issues@hadoop.apache.org Delivered-To: mailing list yarn-issues@hadoop.apache.org Received: (qmail 55722 invoked by uid 99); 12 Apr 2013 05:21:16 -0000 Received: from arcas.apache.org (HELO arcas.apache.org) (140.211.11.28) by apache.org (qpsmtpd/0.29) with ESMTP; Fri, 12 Apr 2013 05:21:16 +0000 Date: Fri, 12 Apr 2013 05:21:16 +0000 (UTC) From: "Carlo Curino (JIRA)" To: yarn-issues@hadoop.apache.org Message-ID: In-Reply-To: References: Subject: [jira] [Commented] (YARN-45) Scheduler feedback to AM to release containers 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/YARN-45?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13629806#comment-13629806 ] Carlo Curino commented on YARN-45: ---------------------------------- Note: we don't have tests as there are no tests for the rest of the protocolbuffer messages either (this would consist in validating mostly auto-generated code). > Scheduler feedback to AM to release containers > ---------------------------------------------- > > Key: YARN-45 > URL: https://issues.apache.org/jira/browse/YARN-45 > Project: Hadoop YARN > Issue Type: Sub-task > Components: resourcemanager > Reporter: Chris Douglas > Assignee: Carlo Curino > Attachments: YARN-45.patch, YARN-45.patch > > > The ResourceManager strikes a balance between cluster utilization and strict enforcement of resource invariants in the cluster. Individual allocations of containers must be reclaimed- or reserved- to restore the global invariants when cluster load shifts. In some cases, the ApplicationMaster can respond to fluctuations in resource availability without losing the work already completed by that task (MAPREDUCE-4584). Supplying it with this information would be helpful for overall cluster utilization [1]. To this end, we want to establish a protocol for the RM to ask the AM to release containers. > [1] http://research.yahoo.com/files/yl-2012-003.pdf -- This message is automatically generated by JIRA. If you think it was sent incorrectly, please contact your JIRA administrators For more information on JIRA, see: http://www.atlassian.com/software/jira