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 D781E18332 for ; Mon, 17 Aug 2015 09:48:46 +0000 (UTC) Received: (qmail 83512 invoked by uid 500); 17 Aug 2015 09:48:46 -0000 Delivered-To: apmail-hadoop-yarn-issues-archive@hadoop.apache.org Received: (qmail 83467 invoked by uid 500); 17 Aug 2015 09:48:46 -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 83453 invoked by uid 99); 17 Aug 2015 09:48:46 -0000 Received: from arcas.apache.org (HELO arcas.apache.org) (140.211.11.28) by apache.org (qpsmtpd/0.29) with ESMTP; Mon, 17 Aug 2015 09:48:46 +0000 Date: Mon, 17 Aug 2015 09:48:46 +0000 (UTC) From: "Hong Zhiguo (JIRA)" To: yarn-issues@hadoop.apache.org Message-ID: In-Reply-To: References: Subject: [jira] [Commented] (YARN-4024) YARN RM should avoid unnecessary resolving IP when NMs doing heartbeat 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-4024?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=14699285#comment-14699285 ] Hong Zhiguo commented on YARN-4024: ----------------------------------- In this patch, both positive and negative lookup result is cached and has the same expiry interval. > YARN RM should avoid unnecessary resolving IP when NMs doing heartbeat > ---------------------------------------------------------------------- > > Key: YARN-4024 > URL: https://issues.apache.org/jira/browse/YARN-4024 > Project: Hadoop YARN > Issue Type: Improvement > Reporter: Wangda Tan > Assignee: Hong Zhiguo > Attachments: YARN-4024-draft.patch > > > Currently, YARN RM NodesListManager will resolve IP address every time when node doing heartbeat. When DNS server becomes slow, NM heartbeat will be blocked and cannot make progress. -- This message was sent by Atlassian JIRA (v6.3.4#6332)