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https://issues.apache.org/jira/browse/KAFKA-2367?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=14692375#comment-14692375
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Gwen Shapira commented on KAFKA-2367:
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I would prefer to use Avro as the internal Data API, rather than invent a new
one.
Avro is 90% of the way to what we need, will seamlessly integrate with the
fairly common use-case of Avro-in-Kafka, can serialize to JSON if people are
interested and because it is an internal format, we are not forcing users into
using Avro.
Avro has very good backward compatibility guarantees, so adding it as a CopyCat
dependency is fairly safe, and IMO better than the alternatives.
> Add Copycat runtime data API
> ----------------------------
>
> Key: KAFKA-2367
> URL: https://issues.apache.org/jira/browse/KAFKA-2367
> Project: Kafka
> Issue Type: Sub-task
> Components: copycat
> Reporter: Ewen Cheslack-Postava
> Assignee: Ewen Cheslack-Postava
> Fix For: 0.8.3
>
>
> Design the API used for runtime data in Copycat. This API is used to
> construct schemas and records that Copycat processes. This needs to be a
> fairly general data model (think Avro, JSON, Protobufs, Thrift) in order to
> support complex, varied data types that may be input from/output to many data
> systems.
> This should issue should also address the serialization interfaces used
> within Copycat, which translate the runtime data into serialized byte[] form.
> It is important that these be considered together because the data format can
> be used in multiple ways (records, partition IDs, partition offsets), so it
> and the corresponding serializers must be sufficient for all these use cases.
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