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https://issues.apache.org/jira/browse/FLINK-13993?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16930457#comment-16930457
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Till Rohrmann commented on FLINK-13993:
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[~maguowei] did you start working on this issue? If yes, then we should assign 
you or the person working on this problem to this issue.

> Using FlinkUserCodeClassLoaders to load the user class in the perjob mode
> -------------------------------------------------------------------------
>
>                 Key: FLINK-13993
>                 URL: https://issues.apache.org/jira/browse/FLINK-13993
>             Project: Flink
>          Issue Type: Improvement
>          Components: Runtime / Coordination
>    Affects Versions: 1.9.0, 1.10.0
>            Reporter: Guowei Ma
>            Priority: Major
>             Fix For: 1.10.0
>
>
> Currently, Flink has the FlinkUserCodeClassLoader, which is using to load 
> user’s class. However, the user class and the system class are all loaded by 
> the system classloader in the perjob mode. This introduces some conflicts.
> This document[1] gives a proposal that makes the FlinkUserClassLoader load 
> the user class in perjob mode. (disscuss with Till[2])
>  
> [1][https://docs.google.com/document/d/1fH2Cwrrmps5RxxvVuUdeprruvDNabEaIHPyYps28WM8/edit#heading=h.815t5dodlxh7]
> [2] 
> [https://docs.google.com/document/d/1SUhFt1BmsGMLUYVa72SWLbNrrWzunvcjAlEm8iusvq0/edit]



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