Re: Introduce pg_receivewal gzip compression tests

On Mon, Jul 19, 2021 at 04:03:33PM +0900, Michael Paquier wrote:
> Another advantage of this patch is the handling of ".gz" is reduced to
> one code path instead of four. That makes a bit easier the
> introduction of new compression methods.
>
> A second thing that was really confusing is that the name of the WAL
> segment generated in this code path completely ignored the type of
> compression. This led to one confusing error message if failing to
> open a segment for write where we'd mention a .partial file rather
> than a .gz.partial file. The versions of zlib I used on Windows
> looked buggy so I cannot conclude there, but I am sure that this
> should allow bowerbird to handle the test correctly.

After more testing and more review, I have applied and backpatched
this stuff. Another thing I did on HEAD was to enable again the ZLIB
portion of the pg_receivewal tests on Windows. bowerdird should stay
green (I hope), and it is better to have as much more coverage as
possible for all that.
--
Michael