Horton

Re: Asynchronous Append on postgres_fdw nodes.

Etsuro Fujita <etsuro.fujita@gmail.com>

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From: Etsuro Fujita <etsuro.fujita@gmail.com>
To: Kyotaro Horiguchi <horikyota.ntt@gmail.com>
Cc: Andrey Lepikhov <a.lepikhov@postgrespro.ru>, "movead.li" <movead.li@highgo.ca>, PostgreSQL Hackers <pgsql-hackers@lists.postgresql.org>
Date: 2020-07-02T03:20:37Z
Lists: pgsql-hackers 
Horiguchi-san,

On Thu, Jul 2, 2020 at 11:14 AM Kyotaro Horiguchi
<horikyota.ntt@gmail.com> wrote:
> As the result of a discussion with Fujita-san off-list, I'm going to
> hold off development until he decides whether mine or Thomas' is
> better.

I'd like to join the party, but IIUC, we don't yet reach a consensus
on which one is the right way to go.  So I think we need to discuss
that first.

> However, I fixed two misbehaviors and rebased.

Thank you for the updated patch!

Best regards,
Etsuro Fujita

Commits

  1. Improve comments for trivial_subqueryscan().

  2. Disable asynchronous execution if using gating Result nodes.

  3. Allow asynchronous execution in more cases.

  4. Doc: Further update documentation for asynchronous execution.

  5. Fix rescanning of async-aware Append nodes.

  6. Doc: Update documentation for asynchronous execution.

  7. Fix EXPLAIN ANALYZE for async-capable nodes.

  8. Minor code cleanup in asynchronous execution support.

  9. Adjust input value to WaitEventSetWait() in ExecAppendAsyncEventWait().

  10. Add support for asynchronous execution.