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 4B2D910CB8 for ; Fri, 7 Mar 2014 22:39:58 +0000 (UTC) Received: (qmail 11599 invoked by uid 500); 7 Mar 2014 22:39:52 -0000 Delivered-To: apmail-hadoop-yarn-issues-archive@hadoop.apache.org Received: (qmail 11533 invoked by uid 500); 7 Mar 2014 22:39:51 -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 11413 invoked by uid 99); 7 Mar 2014 22:39:50 -0000 Received: from arcas.apache.org (HELO arcas.apache.org) (140.211.11.28) by apache.org (qpsmtpd/0.29) with ESMTP; Fri, 07 Mar 2014 22:39:50 +0000 Date: Fri, 7 Mar 2014 22:39:50 +0000 (UTC) From: "Chuan Liu (JIRA)" To: yarn-issues@hadoop.apache.org Message-ID: In-Reply-To: References: Subject: [jira] [Commented] (YARN-445) Ability to signal 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-445?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13924422#comment-13924422 ] Chuan Liu commented on YARN-445: -------------------------------- [~xgong] and [~ming ma], do you plan to build on top [~aklochkov]'s patch? Your design seems match to the previous patch closely except the CLI and web ui part. > Ability to signal containers > ---------------------------- > > Key: YARN-445 > URL: https://issues.apache.org/jira/browse/YARN-445 > Project: Hadoop YARN > Issue Type: Sub-task > Components: nodemanager > Reporter: Jason Lowe > Assignee: Andrey Klochkov > Attachments: MRJob.png, MRTasks.png, YARN-445--n2.patch, YARN-445--n3.patch, YARN-445--n4.patch, YARN-445.patch, YARNContainers.png > > > It would be nice if an ApplicationMaster could send signals to contaniers such as SIGQUIT, SIGUSR1, etc. > For example, in order to replicate the jstack-on-task-timeout feature implemented by MAPREDUCE-1119 in Hadoop 0.21 the NodeManager needs an interface for sending SIGQUIT to a container. For that specific feature we could implement it as an additional field in the StopContainerRequest. However that would not address other potential features like the ability for an AM to trigger jstacks on arbitrary tasks *without* killing them. The latter feature would be a very useful debugging tool for users who do not have shell access to the nodes. -- This message was sent by Atlassian JIRA (v6.2#6252)