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https://issues.apache.org/jira/browse/KAFKA-2484?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=14956096#comment-14956096
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ASF GitHub Bot commented on KAFKA-2484:
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GitHub user Ishiihara opened a pull request:
https://github.com/apache/kafka/pull/307
KAFKA-2484: Add schema projection utilities
This PR adds schema projection utilities to copycat.
You can merge this pull request into a Git repository by running:
$ git pull https://github.com/Ishiihara/kafka schema-projection
Alternatively you can review and apply these changes as the patch at:
https://github.com/apache/kafka/pull/307.patch
To close this pull request, make a commit to your master/trunk branch
with (at least) the following in the commit message:
This closes #307
----
commit 9747208fead30dcaed5295f674650b61cce25977
Author: Liquan Pei <[email protected]>
Date: 2015-10-14T01:16:32Z
Add schema projection utilities
----
> 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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