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https://issues.apache.org/jira/browse/TEZ-1194?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=14045113#comment-14045113
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Bikas Saha commented on TEZ-1194:
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Thats a good point. I am sure we can think of more use cases once we have a
wrapper TezUserPayload. We could have TezUserPayload(ByteBuffer) and include
version in it. Thus the payload format itself remains ByteBuffer but we enable
metadata etc via the TezUserPayload wrapper.
> Make TezUserPayload user facing for payload specification
> ---------------------------------------------------------
>
> Key: TEZ-1194
> URL: https://issues.apache.org/jira/browse/TEZ-1194
> Project: Apache Tez
> Issue Type: Sub-task
> Reporter: Bikas Saha
>
> Now that we have TezUserPayload being used internally to represent user
> payload it may be useful to make it user facing on the API for specifying
> payloads. Advantages
> 1) Clear code for the user instead of having untyped byte[] everywhere
> 2) Lets us internally evolve the representation of user payload and make it
> more efficient without having to break APIs. We can start with
> TezUserPayload(byte[]) and then move on to TezUserPayload(ByteBuffer) and so
> on while maintaining backwards compatibility without needing to add new
> methods. Old code can be translated within TezUserPayload while user migrates
> the code.
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