Is your feature request related to a problem? Please describe.

Sort of. We are exploring the segmented map as means to work-around some constrains we have related to fragmented memory and not being able to allocate large contiguous memory regions.

However, in our experiments we found that it was fairly easy to get >1MB allocation on the bucket index, which exceeds the maximum allocation size we'd like to make.

Describe the solution you'd like

1. Would it be reasonable to also use the fragmented vector for the bucket index?
2. Is there a solution that we are missing here?

Describe alternatives you've considered

Using a different approach to indexing entirely for our problem.