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From "Sangjin Lee (JIRA)" <j...@apache.org>
Subject [jira] [Updated] (HADOOP-13070) classloading isolation improvements for cleaner and stricter dependencies
Date Tue, 10 May 2016 16:09:13 GMT

     [ https://issues.apache.org/jira/browse/HADOOP-13070?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
]

Sangjin Lee updated HADOOP-13070:
---------------------------------
    Attachment: classloading-improvements-ideas-v.3.pdf

Updated the doc (v.3).

Updated the rule realizing that it is better to block user classes from loading parent classes
in all cases. Also added an idea on how we might accomplish that.

> 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: classloading-improvements-ideas-v.3.pdf, classloading-improvements-ideas.pdf,
classloading-improvements-ideas.v.2.pdf
>
>
> 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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