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https://issues.apache.org/jira/browse/HADOOP-17046?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=17616593#comment-17616593
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Steve Loughran commented on HADOOP-17046:
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given ozone depends on RPC, can you update the package-info to record this
fact. especially as I am exploring what would break if the unshaded protobuf
2.5 jar was downgraded to provided in the maven builds, and then left out of
hadoop common lib : HADOOP-18487
> Support downstreams' existing Hadoop-rpc implementations using non-shaded
> protobuf classes.
> -------------------------------------------------------------------------------------------
>
> Key: HADOOP-17046
> URL: https://issues.apache.org/jira/browse/HADOOP-17046
> Project: Hadoop Common
> Issue Type: Improvement
> Components: rpc-server
> Affects Versions: 3.3.0
> Reporter: Vinayakumar B
> Assignee: Vinayakumar B
> Priority: Major
> Fix For: 3.3.0
>
>
> After upgrade/shade of protobuf to 3.7 version, existing Hadoop-Rpc
> client-server implementations using ProtobufRpcEngine will not work.
> So, this Jira proposes to keep existing ProtobuRpcEngine as-is (without
> shading and with protobuf-2.5.0 implementation) to support downstream
> implementations.
> Use new ProtobufRpcEngine2 to use shaded protobuf classes within Hadoop and
> later projects who wish to upgrade their protobufs to 3.x.
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