Uses of Class
org.apache.datasketches.hll.HllSketch
| Package | Description |
|---|---|
| org.apache.datasketches.hll |
The hll package contains a high performance implementation of Phillipe
Flajolet's HLL sketch with significantly improved error behavior.
|
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Uses of HllSketch in org.apache.datasketches.hll
Methods in org.apache.datasketches.hll that return HllSketch Modifier and Type Method Description HllSketchHllSketch. copy()Return a copy of this sketch onto the Java heap.HllSketchHllSketch. copyAs(TgtHllType tgtHllType)Return a deep copy of this sketch onto the Java heap with the specified TgtHllType.HllSketchUnion. getResult()Return the result of this union operator as an HLL_4 sketch.HllSketchUnion. getResult(TgtHllType tgtHllType)Return the result of this union operator with the specifiedTgtHllTypestatic HllSketchHllSketch. heapify(byte[] byteArray)Heapify the given byte array, which must be a valid HllSketch image and may have data.static HllSketchHllSketch. heapify(org.apache.datasketches.memory.Memory srcMem)Heapify the given Memory, which must be a valid HllSketch image and may have data.static HllSketchHllSketch. wrap(org.apache.datasketches.memory.Memory srcMem)Wraps the given read-only Memory that must be a image of a valid sketch, which may be in compact or updatable form, and should have data.static HllSketchHllSketch. writableWrap(org.apache.datasketches.memory.WritableMemory srcWmem)Wraps the given WritableMemory, which must be a image of a valid updatable sketch, and may have data.Methods in org.apache.datasketches.hll with parameters of type HllSketch Modifier and Type Method Description voidUnion. update(HllSketch sketch)Update this union operator with the given sketch.