[Feature Request] Migrate gRPC transport executor to ForkJoinPool for improved performance

[karenyrx]

Is your feature request related to a problem? Please describe

The gRPC transport currently uses a FixedExecutorBuilder for processing gRPC service calls. While this provides significant improvements over the previous directExecutor() approach, ForkJoinPool would offer even greater performance benefits, such as better load balancing through built-in mechanisms like work-stealing.

Describe the solution you'd like

Once PR #19008 to add ForkJoinPool support is merged, the gRPC transport should migrate from using FixedExecutorBuilder to ForkJoinPoolExecutorBuilder.

Related component

Search:Performance

Describe alternatives you've considered

No response

Additional context

No response

[jungeunyooon]

Hi, @karenyrx!
I’m interested in working on this issue.
If it’s still unassigned, would it be okay for me to handle it and open a PR?

[karenyrx]

Hi @jungeunyooon, yes, assigned to you. Thanks for taking this on!