Package org.apache.beam.sdk.extensions.zetasketch

package org.apache.beam.sdk.extensions.zetasketch

PTransforms to compute statistical sketches on data streams based on the ZetaSketch implementation.

Classes

Class	Description
ApproximateCountDistinct	PTransforms for estimating the number of distinct elements in a PCollection, or the number of distinct values associated with each key in a PCollection of KVs.
ApproximateCountDistinct.Globally<T>	PTransform for estimating the number of distinct elements in a PCollection.
ApproximateCountDistinct.Globally.Builder<T>
ApproximateCountDistinct.PerKey<K,V>
ApproximateCountDistinct.PerKey.Builder<K,V>
HllCount	PTransforms to compute HyperLogLogPlusPlus (HLL++) sketches on data streams based on the ZetaSketch implementation.
HllCount.Extract	Provides PTransforms to extract the estimated count of distinct elements (as Longs) from each HLL++ sketch.
HllCount.Init	Provides PTransforms to aggregate inputs into HLL++ sketches.
HllCount.Init.Builder<InputT extends @Nullable Object>	Builder for the HllCount.Init combining PTransform.
HllCount.MergePartial	Provides PTransforms to merge HLL++ sketches into a new sketch.