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https://issues.apache.org/jira/browse/BEAM-7116?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16841702#comment-16841702
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Brian Hulette commented on BEAM-7116:
-------------------------------------

[~reuvenlax] - Could we just use the existing SchemaRegistry/SchemaProvider 
architecture to add support for KVs to Convert?

I'm still wrapping my head around all the schema inference code, but it seems 
like if we modify FieldValueTypeSupplier to accept a TypeDescriptor rather than 
just a Class, and plumb that through FieldValueTypeInformation and 
StaticSchemaInference we could add support for generic classes, including KV.

> Remove KV from Schema transforms
> --------------------------------
>
>                 Key: BEAM-7116
>                 URL: https://issues.apache.org/jira/browse/BEAM-7116
>             Project: Beam
>          Issue Type: Sub-task
>          Components: sdk-java-core
>            Reporter: Reuven Lax
>            Priority: Major
>
> Instead of returning KV objects, we should return a Schema with two fields. 
> The Convert transform should be able to convert these to KV objects.



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