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Point out the wrong statement.

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Point out the wrong statement.

(a) To create splits, MongoDB does migrate any data or affect the shards

(b) The addition of new data or the addition of new servers can result in data distribution imbalances within the cluster

(c) The balancer can run from any of the query routers in a cluster

(d) All of the mentioned

I have been asked this question in a job interview.

This interesting question is from Cluster Architectures topic in chapter Sharding Concepts, Mechanics and Sharded Cluster of MongoDB

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The correct option is (a) To create splits, MongoDB does migrate any data or affect the shards

Easy explanation: The balancer is a background process that manages chunk migrations.

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