Over at MongoDB, Inc. atomic means nothing at all.
MongoDB is quite decent these days. Their WiredTiger backbend is written by the Berkeley DB guys.
We can also call it hitler as it does a 'process genocide'. Or maybe we can use a proper name like 'killtogether' or 'killpg' for kill process group. The name should correlate to the function of the thing.
more like a "fuse" that cuts off power to X and Y when Z fails