b) should be fine since SST has FTWRL and by default wsrep_sst_donor_rejects_queries is off. Regarding a) I presume IST allows client connections at some stage so should be fine as well?
b) should be fine since SST has FTWRL and by default wsrep_sst_ donor_rejects_ queries is off. Regarding a) I presume IST allows client connections at some stage so should be fine as well?