object ThetaSketchUtils
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- final val DEFAULT_LG_NOM_LONGS: Int(12)
- final val MAX_LG_NOM_LONGS: Int(26)
- final val MIN_LG_NOM_LONGS: Int(4)
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- def checkLgNomLongs(lgNomLongs: Int, prettyName: String): Unit
Validates the lgNomLongs parameter for Theta sketch size.
Validates the lgNomLongs parameter for Theta sketch size. Throws a Spark SQL exception if the value is out of bounds.
- lgNomLongs
Log2 of nominal entries
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- def wrapCompactSketch(bytes: Array[Byte], prettyName: String): CompactSketch
Wraps a byte array into a DataSketches CompactSketch object.
Wraps a byte array into a DataSketches CompactSketch object. This method safely deserializes a compact Theta sketch from its binary representation, handling potential deserialization errors by throwing appropriate Spark SQL exceptions.
- bytes
The binary representation of a compact theta sketch
- prettyName
The display name of the function/expression for error messages
- returns
A CompactSketch object wrapping the provided bytes
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(Since version 9)