[HADOOP-18533] RPC Client performance improvement

• Type: Improvement
• Status: Open
• Priority: Minor
• Resolution: Unresolved
• Component/s: rpc-server
• Labels: pull-request-available
• Target Version/s: 3.5.0
• Assignee: Unassigned
• Reporter: asdfgh19
• Created: 19/Nov/22 07:03
• Updated: 04/Jan/24 09:49

Description

  The current implementation copies the rpcRequest and header to a ByteArrayOutputStream in order to calculate the total length of the sent request, and then writes it to the socket buffer.

  But if the rpc engine is ProtobufRpcEngine2, we can pre-calculate the request size, and then send the request directly to the socket buffer, reducing a memory copy. And avoid allocating 1024 bytes of ResponseBuffer each time a request is sent.

Issue Links

• links to: GitHub Pull Request #5151