From what I understand about logical decoding, there is no limit to how many log entries will be retained by the server if nobody reads them from the logical slot. This means that a client that fails to read from the slot has the power to bring down the master database because the server's disk will get full at which point all subsequent write operations will fail and even read operations will fail because they too need temporary space. Even the underlying operating system may be affected as it too may need temporary disk space to carry out its basic functions.
This essentially means that the client has the power to bring down the server without even doing anything malicious, merely by being passive. Seems like it should not be this way.
Is there really no way to limit the retained log entries, for example by specifying the amount of time (e.g. 24 hours or 7 days), so that any entries older than that would be automatically dropped?
