Explanation:When a balancer process is active, the responsible mongos acquires a “lock” by modifying a document in the lock collection in the Config Database. 3. Use _______ migration to distribute data during bulk inserts.
A. automatic
B. manual
C. temporary
D. All of the mentioned
Answer:A
Explanation:When a balancer process is active, the responsible mongos acquires a “lock” by modifying a document in the lock collection in the Config Database. 3. Use _______ migration to distribute data during bulk inserts.
A. automatic B. manual C. temporary D. All of the mentioned
Explanation:Shard keys are immutable and cannot be changed after insertion. 4. The balancer process sends the _______ command to the source shard.