I’m planning an MIT KDC installation for a hadoop cluster consisting of X 
clients with Y kerberized services each. The KDCs are rather powerful machines 
with 64 cores and 125G of RAM. I want to get the most out of this hardware and 
use the mininum number of KDCs required. Is there a rule of thumb for 
situations like this?

For example, imagining X=300 and Y=10, can/should I run X*Y (3000) workers to 
accomodate the worst case scenario when they all want to get their tickets? Or 
can I assume that X*Y/2 will can handle that?

I would appreciate any insights.

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