Question

Point out the correct statement.

(a) Pre-splitting the chunk ranges in an empty sharded collection allows clients to insert data into an already partitioned collection

(b) MongoDB cannot create enough chunks or distribute data fast enough to support required throughput

(c) Chunk migration does not require copying all the data in the chunk from one shard to another

(d) All of the mentioned

I had been asked this question during an internship interview.

This question is from Sharded Cluster Maintenance in chapter Sharding Concepts, Mechanics and Sharded Cluster of MongoDB

Answer 1

The correct answer is (a) Pre-splitting the chunk ranges in an empty sharded collection allows clients to insert data into an already partitioned collection

Explanation: In most situations a sharded cluster will create and distribute chunks automatically without user intervention.