[HADOOP-9820] RPCv9 wire protocol is insufficient to support multiplexing

• Type: Bug
• Status: Closed
• Priority: Blocker
• Resolution: Fixed
• Affects Version/s: 2.1.0-beta, 3.0.0-alpha1
• Fix Version/s: 2.1.0-beta
• Component/s: ipc, security
• Target Version/s: 2.1.0-beta
• Hadoop Flags: Incompatible change
• Assignee: Daryn Sharp
• Reporter: Daryn Sharp
• Created: 02/Aug/13 00:16
• Updated: 12/May/16 18:23
• Resolved: 09/Aug/13 01:20

Description

RPCv9 is intended to allow future support of multiplexing. This requires all wire messages to be tagged with a RPC header so a demux can decode and route the messages accordingly.

RPC ping packets and SASL QOP wrapped data is known to not be tagged with a header.