We currently have two ES clusters which do not normally communicate with
one another (though they could). I would like to import the indexes
from cluster A into cluster B, without destroying the indexes that are
already present in cluster B. Furthermore, I do not want the indexes
from cluster B to exist in cluster A (i.e. uni-directional relationship).
What would be the safest way to do this? How about the fastest? Bonus
points if it's the same answer for both questions.
What no spouse of a writer can ever understand is that a writer is
working when he's staring out the window.