[CXF-8242] Stop blocking executor thread on microprofile rest asynchronous call

• Type: Bug
• Status: Closed
• Priority: Critical
• Resolution: Fixed
• Affects Version/s: 3.3.6, 3.2.13
• Fix Version/s: 3.2.14, 3.3.7, 3.4.0
• Component/s: MicroProfile
• Estimated Complexity: Unknown
• Assignee: Andriy Redko
• Reporter: Baptiste AIGLIN
• Created: 16/Mar/20 07:36
• Updated: 22/Dec/21 20:43
• Resolved: 14/May/20 23:44

Description

Hello, while digging into the way implementation for microprofile was done to understand how I can override the default executor and how it is used behind the scene, I found that the microprofile futures are actually created using CompletableFuture.supplyAsync using the given executor or default one defined by CXF and calling wait on it. If not mistaken this should block the executor thread until it is resumed by async handler. This is a major issue for us as we were expecting pure asynchronous processing to avoid defining executors with many threads.

If everything I say is correct I have tried to implement a naive implementation creating a future using constructor that is not waiting but will be completed by asynchronous handler

Issue Links

• is related to: CXF-7996 Jakarta EE TCKs and compatibility
• links to: GitHub Pull Request #654