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https://issues.apache.org/jira/browse/FLINK-18363?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Timo Walther updated FLINK-18363:
---------------------------------
    Description: 
Currently, it is only possible to retrieve the metric group in the open() 
method of DeserializationSchema and SerializationSchema. We should also expose 
the user code classloader.

We should also create some utility methods like 
`InitializationContext.from(RuntimeContext)` instead of implementing the full 
interface for every call to `open()`.

  was:Currently, it is only possible to retrieve the metric group in the open() 
method of DeserializationSchema and SerializationSchema. We should also expose 
the user code classloader.


> Add user classloader to context in DeSerializationSchema
> --------------------------------------------------------
>
>                 Key: FLINK-18363
>                 URL: https://issues.apache.org/jira/browse/FLINK-18363
>             Project: Flink
>          Issue Type: Improvement
>          Components: API / Core
>            Reporter: Timo Walther
>            Priority: Major
>
> Currently, it is only possible to retrieve the metric group in the open() 
> method of DeserializationSchema and SerializationSchema. We should also 
> expose the user code classloader.
> We should also create some utility methods like 
> `InitializationContext.from(RuntimeContext)` instead of implementing the full 
> interface for every call to `open()`.



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