Re: Sharing DSA pointer between parallel workers after they've been created

Marcus,

This is probably better suited for -hackers.

JD

On Wed, Jun 8, 2022 at 8:00 PM Ma, Marcus <marcjma(at)amazon(dot)com> wrote:

> Hey,
>
>
>
> I’m currently working on a parallelization optimization of the Sequential
> Scan in the codebase, and I need to share information between the workers
> as they scan a relation. I’ve done a decent amount of testing, and I know
> that the parallel workers all share the same dsa_area in the plan state.
> However, by the time I’m actually able to allocate a dsa_pointer via
> dsa_allocate0(), the separate parallel workers have already been created so
> I can’t actually share the pointer with them. Since the workers all share
> the same dsa_area, all I need to do is be able to share the single
> dsa_pointer with them but so far I’ve been out of luck. Any advice?
>
>
>
> Marcus
>