using namevector for lucene -> canopy -> kmeans, where is name after kmeans clustering?

[beneo_7]

i use lucene vector to create the namevector using the idField,

however, i found the name disappear after create canopy in the step canopy 
reduce, the namevector is replace with the Randomxxxxvector.

so, i think after the kmeans using the canopy, there is no label for the vector 
after kmeams clustering.

where can i found the name after kmeans clustering??