Quota = 4294967296 B = 4 GB but diskspace consumed = 4467624786 B = 4.16 GB

I am getting error “quota = 4294967296 B = 4 GB but diskspace consumed = 4467624786 B = 4.16 GB”

while executing a mapreduce job.

can you please help how to fix this problem?

Thanks,
Bipin