> On May 13, 2024, at 11:17, Tom Lane <tgl(at)sss(dot)pgh(dot)pa(dot)us> wrote:
> What's causing that I can't say. It doesn't look like we log the
> errno anywhere when failing to read a zone file :-(
File descriptor exhaustion? (Of course, that would mean something somewhere is leaking them, which is another problem.)