#fsdb experiment n
ufs_mab_sys 2
ufs_rcp_real 2
#  | dbroweval -b '{ my $count = 0; my $current_key = ""; @out_args = (-cols =>[qw(experiment n)]); }'  '{  if ($current_key ne _experiment) { if ($current_key ne "") { $ofref = [ $current_key, $count ] }; $count = 1; $current_key = _experiment; } else { $count++; $ofref = undef; };  }' -e '{ $ofref = [ $current_key, $count ]; }'
#   | dbmapreduce -M -k experiment -f TEST/dbmapreduce_multiple_aware_sub.pl -C simple_reducer
