> Yeah, this is a bug. It seems that the WAL summarizer process, when > restarted, wants to restart from wherever it was previously > summarizing WAL, which is correct if that WAL is still around, but if > summarize_wal has been turned off in the meanwhile, it might not be > correct. Here's a patch to fix that.
Thanks for checking this! > Thanks. New version attached. And besides that, thanks for the patch, of course! I compiled Postgres locally with your patch. I attempted to break it several times, both manually and through a shell script. No success on that -- which in this case is actually success :) The WAL summarizer seems able to always resume from a valid point, so `pg_basebackup` isn't failing anymore.
