I am trying to read big CSV and TSV (tab-separated) Files with about 1000000 rows or more. Now I tried to read a TSV cont
CSV
TSV
1000000
I have not tried it, but I had investigated superCSV earlier.
http://sourceforge.net/projects/supercsv/
http://supercsv.sourceforge.net/
Check if that works for you, 2.5 million lines.