There's nothing about this in the docs :) Backfills are done in fixed size batches to avoid taking long-lived row locks on many rows but there is nothing in pl

There's nothing about this in the docs :) Backfills are done in fixed size batches to avoid taking long-lived row locks on many rows but there is nothing in place to control the overall rate of backfilling. This would certainly be a nice feature to add soon though.