Re: Parallel Apply

Hello, Amit!

Amit Kapila <amit.kapila16@gmail.com>:
> So, in such cases as we won't be able to detect
> transaction dependencies, it would be better to allow out-of-order
> commits optionally.

I think it is better to enable preserve order by default - for safety reasons.

I also checked the patch for potential issues like [0] - seems like it
is unaffected, because parallel apply workers sync their concurrent
updates and wait for each other to commit.

[0]:
https://www.postgresql.org/message-id/flat/CADzfLwWC49oanFSGPTf%3D6FJoTw-kAnpPZV8nVqAyR5KL68LrHQ%40mail.gmail.com#5f6b3be849f8d95c166decfae541df09

Best regards,
Mikhail.