Package | Description |
---|---|
org.apache.datasketches.hll |
The DataSketches™ HLL sketch family package
HllSketch and Union
are the public facing classes of this high performance implementation of Phillipe Flajolet's
HyperLogLog algorithm[1] but with significantly improved error behavior and important features that can be
essential for large production systems that must handle massive data. |
Modifier and Type | Method and Description |
---|---|
static Union |
Union.heapify(byte[] byteArray)
Construct a union operator populated with the given byte array image of an HllSketch.
|
static Union |
Union.heapify(org.apache.datasketches.memory.Memory mem)
Construct a union operator populated with the given Memory image of an HllSketch.
|
static Union |
Union.writableWrap(org.apache.datasketches.memory.WritableMemory srcWmem)
Wraps the given WritableMemory, which must be a image of a valid updatable HLL_8 sketch,
and may have data.
|
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