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https://issues.apache.org/jira/browse/HBASE-15638?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15387143#comment-15387143
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stack commented on HBASE-15638:
-------------------------------

Uploaded patch that changes all pb references from com.google.protobuf to 
org.apache.hbase.shaded.com.google.protobuf. Includes "HBASE-16263 Move all to 
do w/ protobuf -- *.proto files and generated classes -- under hbase-protocol" 
so we compile still.

> Shade protobuf
> --------------
>
>                 Key: HBASE-15638
>                 URL: https://issues.apache.org/jira/browse/HBASE-15638
>             Project: HBase
>          Issue Type: Bug
>          Components: Protobufs
>            Reporter: stack
>            Assignee: stack
>            Priority: Critical
>         Attachments: 15638v2.patch, HBASE-15638.master.001.patch, 
> as.far.as.server.patch
>
>
> Shade protobufs so we can move to a different version without breaking the 
> world. We want to get up on pb3 because it has unsafe methods that allow us 
> save on copies; it also has some means of dealing with BBs so we can pass it 
> offheap DBBs. We'll probably want to change PB3 to open it up some more too 
> so we can stay offheap as we traverse PB. This issue comes of [~anoop.hbase] 
> and [~ram_krish]'s offheaping of the readpath work.
> This change is mostly straight-forward but there are some tricky bits:
>  # How to interface with HDFS? It wants its ByteStrings. Here in particular 
> in FanOutOneBlockAsyncDFSOutputSaslHelper:
> {code}
>       if (payload != null) {
>         builder.setPayload(ByteString.copyFrom(payload));
>       }
> {code}
>  # [~busbey] also points out that we need to take care of endpoints done as 
> pb. Test at least.
> Let me raise this one on the dev list too.



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