In some cases it could be beneficial to update the existing root tree with the new branches instead of copying. Adding a branch that depends only on few input branches would particularly profit from these, since baskets for not used branches would not have to be loaded (and written!) and one could save a lot of I/O.
This would also need some way of checking the processed files afterwards if the new branches exist.
In some cases it could be beneficial to update the existing root tree with the new branches instead of copying. Adding a branch that depends only on few input branches would particularly profit from these, since baskets for not used branches would not have to be loaded (and written!) and one could save a lot of I/O. This would also need some way of checking the processed files afterwards if the new branches exist.