Span of time that's a fraction of a second at nanosecond resolution. Durations less than one second are represented with a 0 seconds field and a positive nanos field. Must be from 0 to 999,999,999 inclusive.
Span of time at a resolution of a second. Must be from 600 to 604800 inclusive. Note: minimum and maximum allowed range for requestedRunDuration is 10 minutes (600 seconds) and 7 days(604800 seconds) correspondingly.