[HADOOP-13426] More efficiently build IPC responses

• Type: Sub-task
• Status: Resolved
• Priority: Major
• Resolution: Fixed
• Fix Version/s: 2.8.0, 3.0.0-alpha1
• Target Version/s: 2.9.0
• Hadoop Flags: Reviewed
• Assignee: Daryn Sharp
• Reporter: Daryn Sharp
• Created: 26/Jul/16 17:33
• Updated: 01/Sep/16 21:16
• Resolved: 03/Aug/16 14:34

Description

The call response buffer is allowed to dynamically grow until a max size is reached. Often times the full size of the response can be known in advance which avoids copies. This is very advantageous for large responses.

Automatic framing of the response buffer will also prevent unnecessary allocations and copies when the size is/isn't known.

Issue Links

• is required by: HADOOP-13438 Optimize IPC server protobuf decoding