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https://issues.apache.org/jira/browse/CRUNCH-328?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13878347#comment-13878347
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Gabriel Reid commented on CRUNCH-328:
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+1
> Add support for ExtensionRegistry with PTypes.protos
> ----------------------------------------------------
>
> Key: CRUNCH-328
> URL: https://issues.apache.org/jira/browse/CRUNCH-328
> Project: Crunch
> Issue Type: Bug
> Components: Core
> Reporter: Josh Wills
> Assignee: Josh Wills
> Attachments: CRUNCH-328.patch
>
>
> Came across a use case where it would be great to be able to have support for
> deserializing protobufs using an ExtensionRegistry for some custom message
> extensions. ExtensionRegistry isn't serializable and there isn't a good way
> to serialize it using the current protobuf libraries, so I also created a
> Serializable extension of Guava's Supplier interface to handle cases where we
> need to specify how to construct an object for use in a DoFn as an external
> argument, which seemed fairly useful.
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