oozie current() versus latest() comparison

Topics	current(n)	latest(n)
Data checking starts from	Action nominal time	Action actual time OR the present wall clock time
Fixed versus Variable	Fixed. Returns the same timestamp for the same action irrespective of when it checks.	Variable. Returns different timestamps based on when the check happens.
Gaps in data availability	Disregards gaps in data availability. Always returns the same instance(s) of data for a given action and does not skip any data whether it exists or not.	Accounts for the gaps in data availability. Skips missing data instances. Only considers the available instances
Range of ‘n’	Any integer	Only ‘0’ OR negative integer.