Incremental backup from a streaming replication standby - Mailing list pgsql-hackers

I played around with incremental backup yesterday and tried $subject

The WAL summarizer is running on the standby server, but when I try
to take an incremental backup, I get an error that I understand to mean
that WAL summarizing hasn't caught up yet.

I am not sure if that is working as designed, but if it is, I think it
should be documented.

Yours,
Laurenz Albe