Re: Race condition in InvalidateObsoleteReplicationSlots()

On 2021-Jun-10, Álvaro Herrera wrote:

> I wrote a test (0002) to cover the case of signalling a walsender, which
> is currently not covered (we only deal with the case of a standby that's
> not running). There are some sharp edges in this code -- I had to make
> it use background_psql() to send a CHECKPOINT, which hangs, because I
> previously send a SIGSTOP to the walreceiver. Maybe there's a better
> way to achieve a walreceiver that remains connected but doesn't consume
> input from the primary, but I don't know what it is. Anyway, the code
> becomes covered with this. I would like to at least see it in master,
> to gather some reactions from buildfarm.

Small fixup to the test one, so that skipping it on Windows works
correctly.

--
Álvaro Herrera 39°49'30"S 73°17'W
Voy a acabar con todos los humanos / con los humanos yo acabaré
voy a acabar con todos (bis) / con todos los humanos acabaré ¡acabaré! (Bender)