a wrong num.levels in fm.as.factor can crash FlashR

[zheng-da]

KMeans takes 16 iterations and 25.53491 seconds
Factor value Factor value 2 is larger than max levels 2
Factor value Factor value Factor value 2 is larger than max levels 2
Factor value 2 is larger than max levels 2
Factor value 2 is larger than max levels 2Factor value
Factor value Factor value 2Factor value Factor value Factor value 2 is larger than max levels 2
Factor value Factor value 2Factor value Factor value Factor value Factor value 2 is larger than max levels 22Factor value Factor value Factor value Factor value 2 is larger than max levels 222Factor value  is larger than max levels Factor value  is larger than max levels 2Factor value 22Factor value Factor value  is larger than max levels Factor value Factor value Factor value 2 is larger than max levels 2Factor value Factor value 2Factor value Factor value Factor value  is larger than max levels Factor value 222222Factor value Factor value  is larger than max levels  is larger than max levels  is larger than max levels 2 is larger than max levels Factor value
2Factor value 22 is larger than max levels
2Factor value
22Factor value 222 is larger than max levels 2 is larger than max levels 2Factor value  is larger than max levels 2Factor value Factor value
2 is larger than max levels 2
2
2 is larger than max levels 2
Factor value 2 is larger than max levels 22
 is larger than max levels 2
2 is larger than max levels 22
2
 is larger than max levels 2
 is larger than max levels 2
2 is larger than max levels 2
Factor value 2 is larger than max levels 2 is larger than max levels 2

 is larger than max levels 2
2 is larger than max levels 2
2
 is larger than max levels 2

2 is larger than max levels 2
2 is larger than max levels 2
2
2 is larger than max levels 2
2 is larger than max levels 2
 is larger than max levels 2
2 is larger than max levels 2
 is larger than max levels 2
2
2 is larger than max levels 2

2 is larger than max levels 2


2 is larger than max levels 2
2 is larger than max levels 2

 is larger than max levels 2
 is larger than max levels 2

2 is larger than max levels 2
 is larger than max levels 2
groupby fails on a partition