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https://issues.apache.org/jira/browse/HBASE-5705?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13423311#comment-13423311
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Devaraj Das commented on HBASE-5705:
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bq. The Writable wrapper goes away when we move to pb engine?
Yes (AFAICT).
bq. Its header length only right? Thats ok I'd say. But for the value, when its
a 50M cell, we won't have to read it into a buffer to find its size before
sending will we when we are pb? (pb does this internally probably but we do we
have to do it again outside of pb to put it in rpc header?)
No we don't have to write to a buffer in the case of PB objects. There is a
getSerializedSize method on PB objects (and assuming that the 50M cell is
encapsulated in the PB object as a byte-array, PB would simply call
byte-array.length...).
> Introduce Protocol Buffer RPC engine
> ------------------------------------
>
> Key: HBASE-5705
> URL: https://issues.apache.org/jira/browse/HBASE-5705
> Project: HBase
> Issue Type: Sub-task
> Components: ipc, master, migration, regionserver
> Reporter: Devaraj Das
> Assignee: Devaraj Das
> Fix For: 0.96.0
>
> Attachments: 5705-1.patch, 5705-2.1.patch, 5705-2.2.patch
>
>
> Introduce Protocol Buffer RPC engine in the RPC core. Protocols that are PB
> aware can be made to go through this RPC engine. The approach, in my current
> thinking, would be similar to HADOOP-7773.
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