I'm Interest on how we can divide test data unique among multiple threads in Gatling
Example Virtual users : 3 Data in file : 9
Divide 3 data into each virtual user
user 1 : dataline 1, dataline 2 ,dataline 3 user 2 : dataline 4, dataline 5,dataline 6 user 3 : dataline 7, dataline 8, dataline 9
This guide is not only yet (it will only be along with the Gatling 3.7 release), but you can check the doc sources commit for an example on how to do this kind of things.
Basically, you have to use readRecords
to grab all the data from your csv file, and then apply whatever grouping strategy you want.