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 8EDC118478 for ; Wed, 18 Nov 2015 22:37:11 +0000 (UTC) Received: (qmail 81969 invoked by uid 500); 18 Nov 2015 22:37:11 -0000 Delivered-To: apmail-hadoop-yarn-issues-archive@hadoop.apache.org Received: (qmail 81920 invoked by uid 500); 18 Nov 2015 22:37:11 -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 81885 invoked by uid 99); 18 Nov 2015 22:37:11 -0000 Received: from arcas.apache.org (HELO arcas) (140.211.11.28) by apache.org (qpsmtpd/0.29) with ESMTP; Wed, 18 Nov 2015 22:37:11 +0000 Received: from arcas.apache.org (localhost [127.0.0.1]) by arcas (Postfix) with ESMTP id 1FCF02C1F70 for ; Wed, 18 Nov 2015 22:37:11 +0000 (UTC) Date: Wed, 18 Nov 2015 22:37:11 +0000 (UTC) From: "Hudson (JIRA)" To: yarn-issues@hadoop.apache.org Message-ID: In-Reply-To: References: Subject: [jira] [Commented] (YARN-4287) Capacity Scheduler: Rack Locality improvement 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-4287?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15012215#comment-15012215 ] Hudson commented on YARN-4287: ------------------------------ FAILURE: Integrated in Hadoop-Mapreduce-trunk-Java8 #681 (See [https://builds.apache.org/job/Hadoop-Mapreduce-trunk-Java8/681/]) move fix version of YARN-4287 from 2.8.0 to 2.7.3 (wangda: rev 23a130abd7f26ca95d7e94988c7bc45c6d419d0f) * hadoop-yarn-project/CHANGES.txt > Capacity Scheduler: Rack Locality improvement > --------------------------------------------- > > Key: YARN-4287 > URL: https://issues.apache.org/jira/browse/YARN-4287 > Project: Hadoop YARN > Issue Type: Improvement > Components: capacityscheduler > Affects Versions: 2.7.1 > Reporter: Nathan Roberts > Assignee: Nathan Roberts > Fix For: 2.8.0 > > Attachments: YARN-4287-minimal-v2.patch, YARN-4287-minimal-v3.patch, YARN-4287-minimal-v4-branch-2.7.patch, YARN-4287-minimal-v4.patch, YARN-4287-minimal.patch, YARN-4287-v2.patch, YARN-4287-v3.patch, YARN-4287-v4.patch, YARN-4287.patch > > > YARN-4189 does an excellent job describing the issues with the current delay scheduling algorithms within the capacity scheduler. The design proposal also seems like a good direction. > This jira proposes a simple interim solution to the key issue we've been experiencing on a regular basis: > - rackLocal assignments trickle out due to nodeLocalityDelay. This can have significant impact on things like CombineFileInputFormat which targets very specific nodes in its split calculations. > I'm not sure when YARN-4189 will become reality so I thought a simple interim patch might make sense. The basic idea is simple: > 1) Separate delays for rackLocal, and OffSwitch (today there is only 1) > 2) When we're getting rackLocal assignments, subsequent rackLocal assignments should not be delayed > Patch will be uploaded shortly. No big deal if the consensus is to go straight to YARN-4189. -- This message was sent by Atlassian JIRA (v6.3.4#6332)