[root@************ local]# mongorestore --port 27017 --oplogReplay --oplogLimit 1586934385 ./
 2020-04-15T07:45:15.764+0000 preparing collections to restore from
 2020-04-15T07:45:15.764+0000 don't know what to do with file "oplog.rs.metadata.json", skipping...
 2020-04-15T07:45:15.764+0000 replaying oplog
 2020-04-15T07:45:18.067+0000 Failed: restore error: error applying oplog: applyOps: cannot apply insert or update operation on a non-existent namespace mydb.mycoll: { ts: Timestamp 1586931218000|1, h: 7203907580858761715, v: 2, op: "u", ns: "mydb.mycoll", o: { $set: { score: 10.0 }}, o2: { _id: ObjectId('5e96a22adf21792157ed2299') } }