[KUDU-1866] Add client request sidecars to KRPC

• Type: Improvement
• Status: Resolved
• Priority: Major
• Resolution: Fixed
• Fix Version/s: 1.4.0
• Component/s: perf, rpc
• Target Version/s: 1.4.0
• Assignee: Henry Robinson
• Reporter: Henry Robinson
• Created: 04/Feb/17 19:24
• Updated: 08/Mar/17 00:50
• Resolved: 08/Mar/17 00:50

Description

For Impala's KRPC integration there are several paths where the request payloads are extremely large. If we add sidecars to requests in KRPC, we get two benefits:

• Fewer copies and serialization steps for huge payloads
• Much larger message limit