improve estimated_step

[huangzhiyong]

func get_chunks_for_table is used to calculate the size of each chunk. In some special cases, the value of estimated_step (estimated_step = (nmax - nmin) / estimated_chunks + 1) will be very large. It is recommended to add a global parameter. When estimated_step is greater than the global parameter, the block size will use the global parameter.

[davidducos]

Hi @huangzhiyong , 100% agree with you!! I saw this in the past but didn't find the time to work on a solution. I really appreciate if you can add the code needed, if not, don't worry I will do it for next release. BTW, I would like to use estimated_step as the name of the global variable and change to: local_estimated_step = (nmax - nmin) / estimated_chunks + 1) for the function calculation.

[huangzhiyong]

Hi @davidducos, C is not my strong point, I tried to push a RP #376