There are a bunch of ways to add a column to a dataframe..

what is the fastest with modin?

say get a new column by applying a function to another one

new_c = df['column'].apply(lambda x: abs(x))

the resulting series should have the same partitions as the dataframe right?

we can use...
merge, or concat, or just do

df['new_col'] = new_c

which is the most readable IMO

and probably a few other ways

but what is the fastest?

Thank you!