Fix issue with heatmaps
Fix issue with heatmaps

Fixes https://github.com/intel-hadoop/HiBench/issues/368
nareshgundla/HiBench,maismail/HiBench,ConeyLiu/HiBench,nareshgundla/HiBench,qiansl127/HiBench,ConeyLiu/HiBench,maismail/HiBench,nareshgundla/HiBench,qiansl127/HiBench,ConeyLiu/HiBench,ConeyLiu/HiBench,maismail/HiBench,maismail/HiBench,qiansl127/HiBench,qiansl127/HiBench,nareshgundla/HiBench