4e0c743c18
We were independently checking ReservedBackends < MaxConnections and max_wal_senders < MaxConnections, but because walsenders aren't allowed to use superuser-reserved connections, that's really the wrong thing. Correct behavior is to insist on ReservedBackends + max_wal_senders being less than MaxConnections. Fix the code and associated documentation. This has been wrong for a long time, but since the situation probably hardly ever arises in the field (especially pre-v10, when the default for max_wal_senders was zero), no back-patch. Discussion: https://postgr.es/m/28271.1520195491@sss.pgh.pa.us |
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