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Date: Mon, 11 Jul 2016 19:23:11 +0000 (UTC)
From: "Sean Busbey (JIRA)" <jira@apache.org>
To: common-issues@hadoop.apache.org
Message-ID: <JIRA.12963707.1461885663000.82873.1468264991188@Atlassian.JIRA>
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Subject: [jira] [Commented] (HADOOP-13070) classloading isolation
 improvements for cleaner and stricter dependencies
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archived-at: Mon, 11 Jul 2016 19:23:13 -0000


    [ https://issues.apache.org/jira/browse/HADOOP-13070?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15371456#comment-15371456 ] 

Sean Busbey commented on HADOOP-13070:
--------------------------------------

that sounds like a decent first pass sanity check.

> classloading isolation improvements for cleaner and stricter dependencies
> -------------------------------------------------------------------------
>
>                 Key: HADOOP-13070
>                 URL: https://issues.apache.org/jira/browse/HADOOP-13070
>             Project: Hadoop Common
>          Issue Type: Improvement
>          Components: util
>            Reporter: Sangjin Lee
>            Assignee: Sangjin Lee
>            Priority: Critical
>         Attachments: HADOOP-13070.poc.01.patch, Test.java, TestDriver.java, classloading-improvements-ideas-v.3.pdf, classloading-improvements-ideas.pdf, classloading-improvements-ideas.v.2.pdf, lib.jar
>
>
> Related to HADOOP-11656, we would like to make a number of improvements in terms of classloading isolation so that user-code can run safely without worrying about dependency collisions with the Hadoop dependencies.
> By the same token, it should raised the quality of the user code and its specified classpath so that users get clear signals if they specify incorrect classpaths.
> This will contain a proposal that will include several improvements some of which may not be backward compatible. As such, it should be targeted to the next major revision of Hadoop.


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