drop rules don't make much sense

[sixtus]

It's really hard to grasp dropByPeriod being inclusive not exclusive. To understand it, you have to be aware of rule orders.

Moreover, the time parameter doesn't make any sense (the examples having 100 years proofs the point).

It would probably make more sense to just have a "dropSegments" rule w/o any parameter, bonus points for forcing it to the end of the rule list.

Once you got there, just unloading everything that's not explicitly loaded and totally getting rid of the drop* rules makes even more sense.

[fjy]

This saw a slight update in that there are now load/drop forever rules. As for default drop rules at the end of a rule list, there are use cases where no rule can be applied to a segment because of misconfiguration, and I think it may be a big dangerous to just drop the segment in such cases.

[fjy]

I am closing this issue as I believe dropForever rules have solved this problem. We should open a separate issue to discuss not needing explicit drop rules.