Return-Path: X-Original-To: apmail-hadoop-common-issues-archive@minotaur.apache.org Delivered-To: apmail-hadoop-common-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 1E4CB1167C for ; Mon, 28 Jul 2014 19:45:44 +0000 (UTC) Received: (qmail 10836 invoked by uid 500); 28 Jul 2014 19:45:43 -0000 Delivered-To: apmail-hadoop-common-issues-archive@hadoop.apache.org Received: (qmail 10789 invoked by uid 500); 28 Jul 2014 19:45:43 -0000 Mailing-List: contact common-issues-help@hadoop.apache.org; run by ezmlm Precedence: bulk List-Help: List-Unsubscribe: List-Post: List-Id: Reply-To: common-issues@hadoop.apache.org Delivered-To: mailing list common-issues@hadoop.apache.org Received: (qmail 10775 invoked by uid 99); 28 Jul 2014 19:45:43 -0000 Received: from arcas.apache.org (HELO arcas.apache.org) (140.211.11.28) by apache.org (qpsmtpd/0.29) with ESMTP; Mon, 28 Jul 2014 19:45:43 +0000 Date: Mon, 28 Jul 2014 19:45:43 +0000 (UTC) From: "Hadoop QA (JIRA)" To: common-issues@hadoop.apache.org Message-ID: In-Reply-To: References: Subject: [jira] [Commented] (HADOOP-10893) isolated classloader on the client side 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/HADOOP-10893?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=14076687#comment-14076687 ] Hadoop QA commented on HADOOP-10893: ------------------------------------ {color:red}-1 overall{color}. Here are the results of testing the latest attachment http://issues.apache.org/jira/secure/attachment/12658222/classloader-test.tar.gz against trunk revision . {color:red}-1 patch{color}. The patch command could not apply the patch. Console output: https://builds.apache.org/job/PreCommit-HADOOP-Build/4372//console This message is automatically generated. > isolated classloader on the client side > --------------------------------------- > > Key: HADOOP-10893 > URL: https://issues.apache.org/jira/browse/HADOOP-10893 > Project: Hadoop Common > Issue Type: New Feature > Components: util > Affects Versions: 2.4.0 > Reporter: Sangjin Lee > Assignee: Sangjin Lee > Attachments: HADOOP-10893.patch, classloader-test.tar.gz > > > We have the job classloader on the mapreduce tasks that run on the cluster. It has a benefit of being able to isolate class space for user code and avoid version clashes. > Although it occurs less often, version clashes do occur on the client JVM. It would be good to introduce an isolated classloader on the client side as well to address this. A natural point to introduce this may be through RunJar, as that's how most of hadoop jobs are run. -- This message was sent by Atlassian JIRA (v6.2#6252)