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New in version 3.4.
Enables auto-splitting for the sharded cluster. Auto-splitting is enabled by default.
sh.enableAutoSplit()enables the autosplit flag in the
You can only run
mongoshsession that is connected to a
sh.enableAutoSplit()errors if run on a
Starting in MongoDB 4.2,
sh.startBalancer()also enables auto-splitting for the sharded cluster.
For more information on chunk splits, see Chunk Splits. For more information about how MongoDB balances chunks among shards, see: Manage Sharded Cluster Balancer and Sharded Cluster Balancer.