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https://issues.apache.org/jira/browse/KAFKA-2484?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Work on KAFKA-2484 started by Liquan Pei.
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> Add schema projection utilities
> -------------------------------
>
>                 Key: KAFKA-2484
>                 URL: https://issues.apache.org/jira/browse/KAFKA-2484
>             Project: Kafka
>          Issue Type: Sub-task
>          Components: copycat
>            Reporter: Ewen Cheslack-Postava
>            Assignee: Liquan Pei
>            Priority: Minor
>             Fix For: 0.9.0.0
>
>
> Since Copycat has support for versioned schemas and connectors may encounter 
> different versions of the same schema, it will be useful for some connectors 
> to be able to project between different versions of a schema, or have an 
> automatic way to try to project to a target schema (e.g. an existing database 
> table the connector is trying to write data to).
> These utilities should be pretty small because the complex types we support 
> are fairly limited. The primary code required will be for Structs. However, 
> we should take care in designing these utilities since there may be 
> performance implications. For example, when projecting between two schemas, 
> it would be better to come up with a plan object that can efficiently perform 
> the project and be able to reuse that plan many times.



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