Send as many batches as possible to input queues #895
Merged
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Description
This PR updates the method
_manage_batch_flow
to send as many batches as can to the input queues of the steps when it's called. This improves the performance and the parallelisation when using more than 1 replica per step, as before most of the time the input queue was empty and was only filled with just one batch receiving one batch from a generator or from the step itself.