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https://issues.apache.org/jira/browse/HADOOP-16621?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Vinayakumar B updated HADOOP-16621:
-----------------------------------
    Summary: [pb-upgrade] Remove Protobuf classes from signatures of Public 
APIs  (was: [pb-upgrade] spark-hive doesn't compile against hadoop trunk 
because of Token's marshalling)

> [pb-upgrade] Remove Protobuf classes from signatures of Public APIs
> -------------------------------------------------------------------
>
>                 Key: HADOOP-16621
>                 URL: https://issues.apache.org/jira/browse/HADOOP-16621
>             Project: Hadoop Common
>          Issue Type: Sub-task
>          Components: common
>    Affects Versions: 3.3.0
>            Reporter: Steve Loughran
>            Assignee: Vinayakumar B
>            Priority: Critical
>
> the move to protobuf 3.x stops spark building because Token has a method 
> which returns a protobuf, and now its returning some v3 types.
> if we want to isolate downstream code from protobuf changes, we need to move 
> that marshalling method from token and put in a helper class.



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