Koichi Suzuki wrote:
> As Heikki pointed out, the issue is not to decompress the compressed
> WAL, but also how we can keep archive log still compressed after it is
> handled by pg_standby.
pg_standby makes a *copy* of the segment from the archive, and need only
ensure that the copy is decompressed; it has no reason to ever
decompress the original version in the archive.
I don't see the problem here.