Error showing as Number of reduce tasks is set to 0 since there's no reduce operator

Dear Team,
When I am executing simple query in web console :: ‘Select count(*) from emp_tab’, it is stopping at following message ‘Number of reduce tasks is set to 0 since there’s no reduce operator’.
AND
when i am executing the same in Hue, it is giving same message as ‘Number of reduce tasks is set to 0 since there’s no reduce operator’.

Kindly rectify me where i am going.

Thanks & Regards,
Gowtham.