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Posted to common-issues@hadoop.apache.org by "Sangjin Lee (JIRA)" <ji...@apache.org> on 2016/05/07 01:13:13 UTC
[jira] [Updated] (HADOOP-13070) classloading isolation improvements
for cleaner and stricter dependencies
[ 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.pdf
I have posted a short document for the classloading improvements ideas to spur the discussion. Especially, I went into the details of the idea of the stricter class space separation (between user and system) and discussed implications.
Your feedback and thoughts are most welcome. Thanks!
> 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.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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