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  • package root
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    root
  • package com
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    root
  • package spotify
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    com
  • package scio
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    spotify
  • package extra
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    scio
  • object Iterators

    Utilities for Scala iterators.

    Utilities for Scala iterators.

    Adds a timeSeries method to Iterator[T] so that it can be windowed with different logic.

    import com.spotify.scio.extra.Iterators._

case class Event(user: String, action: String, timestamp: Long)
val i: Iterator[Event] = // ...

// 60 minutes fixed windows offset by 30 minutes
// E.g. minute [30, 90), [90, 120), [120, 150), [150, 180) ...
i.timeSeries(_.timestamp).fixed(3600000, 1800000)

// session windows with 60 minute gaps between windows
i.timeSeries(_.timestamp).session(3600000)

// 60 minutes sliding windows, one every 10 minutes, offset by 5 minutes
// E.g. minute [5, 65), [15, 75), [25, 85), [35, 95) ...
i.timeSeries(_.timestamp).session(3600000, 600000, 300000)
    Definition Classes
    extra
  • RichIterator
  • TimeSeriesIterator
c

com.spotify.scio.extra.Iterators

TimeSeriesIterator

class TimeSeriesIterator[T] extends AnyRef

Iterator for time series data.

Source
Iterators.scala
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  9. def fixed(size: Long, offset: Long = 0L): Iterator[Seq[T]]

    Iterator of fixed-size timestamp-based windows.

    Iterator of fixed-size timestamp-based windows. Partitions the timestamp space into half-open intervals of the form [N * size + offset, (N + 1) * size + offset).

  10. final def getClass(): Class[_ <: AnyRef]
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  15. final def notifyAll(): Unit
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  16. def session(gapDuration: Long): Iterator[Seq[T]]

    Iterator of sessions separated by gapDuration-long periods with no elements.

  17. def sliding(size: Long, period: Long = 1L, offset: Long = 0L): Iterator[Seq[T]]

    Iterator of possibly overlapping fixed-size timestamp-based windows.

    Iterator of possibly overlapping fixed-size timestamp-based windows. Partitions the timestamp space into half-open intervals of the form [N * period + offset, N * period + offset + size).

  18. final def synchronized[T0](arg0: => T0): T0
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