how load/group with large csv files

[Martin Neumann]

Hej,

I have a csv file with 54 columns each of them is string (for now). I need
to group and sort them on field 15.

Whats the best way to load the data into Flink?
There is no Tuple54 (and the <> would look awful anyway with 54 times
String in it).
My current Idea is to write a Mapper and split the string to Arrays of
Strings would grouping and sorting work on this?

So can I do something like this or does that only work on tuples:
Dataset<String[]> ds;
ds.groupBy(15).sort(20. ANY)

cheers Martin