Hello,

can someone help me understand this parameter:
http://www.lmdb.tech/doc/group__mdb.html#gaa2506ec8dab3d969b0e609cd82e619e5

1. why does a user need to specify this apriori? Other databases don't
require user to declare the size of the db beforehand. its not something a
user knows in advance.
2. quoting: "The size of the memory map is also the maximum size of the
database.". what happens when the size of the db overflows this parameter?
3. what is the trade-off if a user sets this parameter too large than is
necessary?

S.

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