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https://issues.apache.org/jira/browse/HADOOP-9163?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13537566#comment-13537566
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Todd Lipcon commented on HADOOP-9163:
-------------------------------------
You can already avoid copying without changing the RPC request protobuf, by
manually serializing the request proto using CodedOutputStream. See HBASE-5945
for a patch in which I did this for HBase.
> The rpc msg in ProtobufRpcEngine.proto should be moved out to avoid an extra
> copy
> ----------------------------------------------------------------------------------
>
> Key: HADOOP-9163
> URL: https://issues.apache.org/jira/browse/HADOOP-9163
> Project: Hadoop Common
> Issue Type: Sub-task
> Reporter: Sanjay Radia
>
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