http://stackoverflow.com/questions/37231616/add-a-new-column-to-a-dataframe-new-column-i-want-it-to-be-a-uuid-generator
On Fri, Apr 7, 2017 at 3:56 PM, Everett Anderson <[email protected]> wrote: > Hi, > > What's the best way to assign a truly unique row ID (rather than a hash) > to a DataFrame/Dataset? > > I originally thought that functions.monotonically_increasing_id would do > this, but it seems to have a rather unfortunate property that if you add it > as a column to table A and then derive tables X, Y, Z and save those, the > row ID values in X, Y, and Z may end up different. I assume this is because > it delays the actual computation to the point where each of those tables is > computed. > > -- -- Thanks, Tim
