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Use ________ to ensure that the balancer migrates documents that exist within the specified range to a specific shard.

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Use ________ to ensure that the balancer migrates documents that exist within the specified range to a specific shard.

(a) sh.addShardTag()

(b) sh.addTag()

(c) sh.aShardTag()

(d) all of the mentioned

This question was addressed to me during an interview.

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

1 Answer

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Best answer
The correct choice is (a) sh.addShardTag()

Explanation: Only issue sh.addTagRange() when connected to a mongos instance.

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