Major Description
I'm not sure why, but DateRangeRules can lose some filters. For example in this query:
SELECT COUNT(*) FROM druid.foo WHERE EXTRACT(YEAR FROM __time) = 2000 AND EXTRACT(MONTH FROM __time) IN (2, 3, 5)
The filter gets resolved to __time >= 2000-02-01 and __time < 2000-03-01, losing the months "3" and "5". Removing DateRangeRules.FILTER_INSTANCE from the planner's rule set stops this from happening.