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.PTransform for estimating the number of distinct elements in a PCollection.precision value used in HllCount.Init.Builder.withPrecision(int) is
15.HllCount.Init.Builder for a HllCount.Init combining PTransform that
computes bytes-type HLL++ sketches.HllCount.Init.Builder for a HllCount.Init combining PTransform that
computes integer-type HLL++ sketches.HllCount.Init.Builder for a HllCount.Init combining PTransform that
computes long-type HLL++ sketches.HllCount.Init.Builder for a HllCount.Init combining PTransform that
computes string-type HLL++ sketches.ByteBuffer to byte[], mapping null
ByteBuffers (representing empty sketches) to empty byte[]s.PTransform that takes an input PCollection<byte[]> of HLL++
sketches and returns a PCollection<Long> of the estimated count of distinct elements
extracted from each sketch.Combine.Globally PTransform that takes an input PCollection<InputT> and returns a PCollection<byte[]> which consists of the HLL++
sketch computed from the elements in the input PCollection.Combine.Globally PTransform that takes an input PCollection<byte[]> of HLL++ sketches and returns a PCollection<byte[]> of a new
sketch merged from the input sketches.PTransforms to compute HyperLogLogPlusPlus (HLL++) sketches on data streams based on the
ZetaSketch implementation.PTransforms to extract the estimated count of distinct elements (as Longs) from each HLL++ sketch.PTransforms to aggregate inputs into HLL++ sketches.HllCount.Init combining PTransform.PTransforms to merge HLL++ sketches into a new sketch.precision value you can set in HllCount.Init.Builder.withPrecision(int) is
24.precision value you can set in HllCount.Init.Builder.withPrecision(int) is
10.PTransforms to compute statistical sketches on data streams based on the ZetaSketch implementation.PTransform that takes an input PCollection<KV<K, byte[]>> of (key,
HLL++ sketch) pairs and returns a PCollection<KV<K, Long>> of (key, estimated count
of distinct elements extracted from each sketch).Combine.PerKey PTransform that takes an input PCollection<KV<K, InputT>> and returns a PCollection<KV<K, byte[]>> which consists
of the per-key HLL++ sketch computed from the values matching each key in the input PCollection.Combine.PerKey PTransform that takes an input PCollection<KV<K, byte[]>> of (key, HLL++ sketch) pairs and returns a PCollection<KV<K, byte[]>> of (key, new sketch merged from the input sketches under the
key).precision parameter used to compute HLL++ sketch.