Count error when expanding the root.

[juyoungbang]

Hi.
I'm currently executing your code and found some issues.
When running one of my workloads, it exits with the following error message.

arr_idx = 2805; num_keys = 2707
data capacity = 3674
Count errror!!!

I'm working on a workload which incurs out of bound inserts.
I've tracked that the error occurs when calling the get_max_key() function inside expand_root().
Can you give any suggestions for this situation?

Thanks a lot.

Ju Young