Question

Point out the correct statement.

(a) To affect the sync target for the initial sync, run rs.syn() operation before initial sync

(b) If you run rs.syncFrom() during initial sync, MongoDB produces no error messages

(c) replSetSyncFrom and rs.syncFrom() provide a permanent override of default behavior

(d) All of the mentioned

The question was asked in my homework.

Query is from Troubleshooting in section Replication Concepts, Processes and Replication Set of MongoDB

Answer 1

Correct option is (b) If you run rs.syncFrom() during initial sync, MongoDB produces no error messages

The best I can explain: The sync target falls more than 30 seconds behind another member of the replica set; the mongod will revert to the default sync target.