Changed in version 4.2.
Starts the balancer in a sharded cluster. Starting in MongoDB 4.2,
sh.startBalancer()also enables auto-splitting for the sharded cluster.
The method can take the following options:ParameterTypeDescription
Optional. Time limit for enabling the balancer.
Defaults to 60000 milliseconds.
Changed in version 3.4: If using the 3.4
mongoshell with earlier version sharded clusters, the parameter specifies the amount of time to wait for the balancing round to start.
Optional. The frequency (in milliseconds) at which to check if a balancing round has started.
Changed in version 3.4: Only applicable when using version 3.4
mongoshell with earlier version sharded clusters.s
In earlier versions, the method waited for the balancing to start.