Re: Race conditions with checkpointer and shutdown - Mailing list pgsql-hackers

Hi,

On 2019-04-29 12:55:31 -0400, Tom Lane wrote:
> Andres Freund <andres@anarazel.de> writes:
> > Hm, I'm not convinced that's OK. What if there's a network hickup? We'll
> > wait until there's an OS tcp timeout, no?
> 
> No.  send() is only going to block if there's no room in the kernel's
> buffers, and that would only happen if we send a lot of data in between
> waits to receive data.  Which, AFAIK, the walreceiver never does.
> We might possibly need to improve that code in the future, but I don't
> think there's a need for it today.

Ah, right.

- Andres