Transforms for estimating the number of distinct elements in a collection or the number of distinct values associated with each key in a collection of key-value pairs.
See BEAM-7703 for updates.
- HllCount estimates the number of distinct elements and creates re-aggregatable sketches using the HyperLogLog++ algorithm.
- Count counts the number of elements within each aggregation.
Last updated on 2022/12/21
Have you found everything you were looking for?
Was it all useful and clear? Is there anything that you would like to change? Let us know!