Finding out the size of subspace in foundationdb

Using FoundationDB
1

we are using single fdb cluster for handling multiple tenants. Each tenant data, we are segregating with the subspace directory in foundationdb.

Now i would like to know, how much storage each tenant is using? Means what is the size of subspace for each tenant in fdb?

2

There is fdb_transaction_get_estimated_range_size_bytes which will use the histograms to give you an estimate. If you want to have something precise I am afraid that you have the query the whole range (or materialize this by doing your own book keeping).