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class ThreadUnsafeDoubleUniformReservoir extends AnyRef

Class inspired by codahale's metrics UniformReservoir and UniformSnapshot, implementing Vitter's R Algorithm.

Reimplementing our own version for two main reasons:

  • Using doubles instead of longs (no clue if it's actually a good idea: your mileage may vary)
  • Don't want to have an external dependency for a reasonably small thing.
  • compute all snapshot values in a single function call
  • keep the "real" min/max

Otherwise, we try to follow the original behaviour.

It is named 'ThreadUnsafe' to underline that unlike the original from codahale, it's totally thread unsafe:

These classes are (very) mutable and intended for re-use in a single-threaded context.

You have been warned.

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Instance Constructors

  1. new ThreadUnsafeDoubleUniformReservoir()

    Constructor using the default size

  2. new ThreadUnsafeDoubleUniformReservoir(reservoirSize: Int)

Value Members

  1. final def !=(arg0: Any): Boolean
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  2. final def ##(): Int
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  3. final def ==(arg0: Any): Boolean
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  4. final def asInstanceOf[T0]: T0
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  5. def clone(): AnyRef
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  6. final def eq(arg0: AnyRef): Boolean
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  7. def equals(arg0: AnyRef): Boolean
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  8. def finalize(): Unit
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  9. final def getClass(): Class[_ <: AnyRef]
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  10. def hashCode(): Int
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  11. final def isInstanceOf[T0]: Boolean
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  12. final def ne(arg0: AnyRef): Boolean
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  13. final def notify(): Unit
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  14. final def notifyAll(): Unit
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    @native()
  15. def size: Int
  16. def snapshot(): Stats
  17. final def synchronized[T0](arg0: => T0): T0
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  18. def toString(): String
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  19. def update(value: Double): ThreadUnsafeDoubleUniformReservoir
  20. final def wait(): Unit
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    @throws(classOf[java.lang.InterruptedException])
  21. final def wait(arg0: Long, arg1: Int): Unit
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    @throws(classOf[java.lang.InterruptedException])
  22. final def wait(arg0: Long): Unit
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