Table statistics collection was added in HIVE-33 (numRows, rawDataSize, etc). Is there anything that lets you create your own statistics gathering?
For example, given table A with columns x, y, z, I want to gather count(distinct x, y) as a statistic that would be stored in the metastore. I know there exist column level statistics that have approximations for distinct for a single column, but that doesn't help my use case above where I have 2 columns involved. Thanks, Alex.
