I got that error once, all other request are ended with EOF, yeah, lookup query is expensive. Anyway I could make the lookup query pageable? wenye@WENs-MBP-3 service % zed permission lookup transaction read user:u_A6aQ7VMtQfC8PYSnJ1NWuz --insecure Error: rpc error: code = Unknown desc = unable to query tuples: unexpected EOF