[FLINK-23712] Improve Protobuf serialization performance

• Type: Improvement
• Status: Closed
• Priority: Major
• Resolution: Fixed
• Fix Version/s: statefun-3.1.0
• Component/s: Stateful Functions
• Labels: pull-request-available
• Assignee: Igal Shilman
• Reporter: Igal Shilman
• Created: 10/Aug/21 16:12
• Updated: 11/Aug/21 13:40
• Resolved: 11/Aug/21 13:40

Description

Profiling allocations shows that a quarter of the allocations happens while parsing Protobuf, this happens because the CodedInputStream/CodedOutputStream allocate a 4kb buffer on construction. This can be easily avoided by caching them. 

Issue Links

• links to: GitHub Pull Request #251