grouper playground
combIdents: 2 tables, 1st: max idents length = 1; 2nd: max ident length = 5;
minor fixes to combineIdent
stop crawling after 20 entries
mapreduce: still only empty intersections
crawled idents down to 10, main calls combIdents, comb idents counts intersections
YAY mapreduce working!!; todo: several grouping runs to combine data
2nd mapreduce run, merged ident in 1st reduce
mapreduce abstracted, can be used with own output now; two MR runs work
2 runs MR work, empty intersections removed, code cleanup
use grouper