Description
RPC server first serializes RPC response to a ByteArrayOutputStream and then creates a new array to write to socket. For most responses the RPC handler is able to write the entire response in-line. If we could use the same buffer used by ByteArrayOutputStream, we can avoid this copy.
As mentioned in HADOOP-4802, yet another copy could be avoided (in most cases) if we use a static direct buffer for the responses (not proposed for this jira).
Attachments
Issue Links
- relates to
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HADOOP-4802 RPC Server send buffer retains size of largest response ever sent
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- Resolved
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