20. The system of claim 13 , the operations further comprise blocking: determining that a threshold number of examples from the plurality of examples has been distributed; and removing one or more workers from the plurality of workers, based on the determination.
20. The system of claim 13 , the operations further comprise blocking: determining that a threshold number of examples from the plurality of examples has been distributed; and removing one or more workers from the plurality of workers, based on the determination. 21. The system of claim 20 , wherein removing one or more workers form the plurality of workers further comprises: removing a first number of workers associated with examples associated with the first class based on a number of examples associated with the first class being distributed; and removing a second number of workers associated with examples associated with the second class based on a number of examples associated with the second class being distributed.