ApproximateUnique
JavadocTransforms 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.
Examples
See BEAM-7703 for updates.
Related transforms
- 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.
- Distinct
Last updated on 2024/12/06
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