you're right, uneven shards are an inevitable outcome of this approach but shard "even-ness" is in direct tension with the concern of the GP, which is executio

you're right, uneven shards are an inevitable outcome of this approach but shard "even-ness" is in direct tension with the concern of the GP, which is execution atomicity frequently, it's better to have uneven shards (that you can e.g. scale independently when necessary) that give you atomic execution, than even shards that require distributed transactions