Stored extent metadata can be utilized with the new "use estimated metadata" connection, which allows for precomputed extent estimation and much faster connectivity on large tables.
Although costly aggregation functions are avoided whenever the extent is recomputed, the extent information for HANA tables is only available after a delta merge. By default, this option will leverage a fallback to the standard behavior of using aggregation functions to compute extents in cases where the data is unavailable(or has not yet been computed).