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 91ED9200CD2 for ; Wed, 12 Jul 2017 22:26:05 +0200 (CEST) Received: by cust-asf.ponee.io (Postfix) id 8EEE216A4DC; Wed, 12 Jul 2017 20:26:05 +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 D994216A4ED for ; Wed, 12 Jul 2017 22:26:04 +0200 (CEST) Received: (qmail 1858 invoked by uid 500); 12 Jul 2017 20:26:04 -0000 Mailing-List: contact mapreduce-issues-help@hadoop.apache.org; run by ezmlm Precedence: bulk List-Help: List-Unsubscribe: List-Post: List-Id: Delivered-To: mailing list mapreduce-issues@hadoop.apache.org Received: (qmail 1846 invoked by uid 99); 12 Jul 2017 20:26:04 -0000 Received: from pnap-us-west-generic-nat.apache.org (HELO spamd3-us-west.apache.org) (209.188.14.142) by apache.org (qpsmtpd/0.29) with ESMTP; Wed, 12 Jul 2017 20:26:04 +0000 Received: from localhost (localhost [127.0.0.1]) by spamd3-us-west.apache.org (ASF Mail Server at spamd3-us-west.apache.org) with ESMTP id 9989A195B34 for ; Wed, 12 Jul 2017 20:26:03 +0000 (UTC) X-Virus-Scanned: Debian amavisd-new at spamd3-us-west.apache.org X-Spam-Flag: NO X-Spam-Score: -99.202 X-Spam-Level: X-Spam-Status: No, score=-99.202 tagged_above=-999 required=6.31 tests=[KAM_ASCII_DIVIDERS=0.8, RP_MATCHES_RCVD=-0.001, SPF_PASS=-0.001, USER_IN_WHITELIST=-100] autolearn=disabled Received: from mx1-lw-us.apache.org ([10.40.0.8]) by localhost (spamd3-us-west.apache.org [10.40.0.10]) (amavisd-new, port 10024) with ESMTP id 2bKegm2P1umb for ; Wed, 12 Jul 2017 20:26:03 +0000 (UTC) Received: from mailrelay1-us-west.apache.org (mailrelay1-us-west.apache.org [209.188.14.139]) by mx1-lw-us.apache.org (ASF Mail Server at mx1-lw-us.apache.org) with ESMTP id 781C3626EB for ; Wed, 12 Jul 2017 20:26:02 +0000 (UTC) Received: from jira-lw-us.apache.org (unknown [207.244.88.139]) by mailrelay1-us-west.apache.org (ASF Mail Server at mailrelay1-us-west.apache.org) with ESMTP id 8773CE0D93 for ; Wed, 12 Jul 2017 20:26:01 +0000 (UTC) Received: from jira-lw-us.apache.org (localhost [127.0.0.1]) by jira-lw-us.apache.org (ASF Mail Server at jira-lw-us.apache.org) with ESMTP id 24F2C2472D for ; Wed, 12 Jul 2017 20:26:00 +0000 (UTC) Date: Wed, 12 Jul 2017 20:26:00 +0000 (UTC) From: "Ye Zhou (JIRA)" To: mapreduce-issues@hadoop.apache.org Message-ID: In-Reply-To: References: Subject: [jira] [Commented] (MAPREDUCE-6697) Concurrent task limits should only be applied when necessary MIME-Version: 1.0 Content-Type: text/plain; charset=utf-8 Content-Transfer-Encoding: 7bit X-JIRA-FingerPrint: 30527f35849b9dde25b450d4833f0394 archived-at: Wed, 12 Jul 2017 20:26:05 -0000 [ https://issues.apache.org/jira/browse/MAPREDUCE-6697?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16084628#comment-16084628 ] Ye Zhou commented on MAPREDUCE-6697: ------------------------------------ [~nroberts]Thanks. Hi, [~shv]. Please check the 2.7 patch. > Concurrent task limits should only be applied when necessary > ------------------------------------------------------------ > > Key: MAPREDUCE-6697 > URL: https://issues.apache.org/jira/browse/MAPREDUCE-6697 > Project: Hadoop Map/Reduce > Issue Type: Bug > Components: mrv2 > Affects Versions: 2.7.0 > Reporter: Jason Lowe > Assignee: Nathan Roberts > Fix For: 2.9.0, 3.0.0-alpha4 > > Attachments: MAPREDUCE-6697-branch-2.8.001.patch, MAPREDUCE-6697-v1.patch > > > The concurrent task limit feature should only adjust the ANY portion of the AM heartbeat ask when a limit is truly necessary, otherwise extraneous containers could be allocated by the RM to the AM adding some overhead to both. Specifying a concurrent task limit that is beyond the total number of tasks in the job should be the same as asking for no limit. -- This message was sent by Atlassian JIRA (v6.4.14#64029) --------------------------------------------------------------------- To unsubscribe, e-mail: mapreduce-issues-unsubscribe@hadoop.apache.org For additional commands, e-mail: mapreduce-issues-help@hadoop.apache.org