Task get stuck in up_for_retry state

[ramandumcs]

Hi ,
I am providing the "retries" and "retry_delay" as an argument to one of my 
operator in the DAG. But the corresponding task get stuck in "up_for_retry" 
state and is not being retried by scheduler. retry_delay is set to 
timedelta(seconds=5) so it should get retried after 5 seconds.
Thanks,
Raman Gupta