• significantly improves index lookup performance for partitions that do not change from query to query
• replaces unnecessary unmap/remap of the index on every query to a more intelligent version check. Works fully on no-change to "append" partition update scenarios
• improves performance of index lookups during O3 by reducing map/unmap calls @ideoma may be able to continue from here to improve O3 as well

Before:

After

thanks @RaphDal for the comprehensive benchmark!