Documentation
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Overview ¶
Package top contains transformations for finding the smallest (or largest) N elements based on arbitrary orderings.
Index ¶
- func Largest(s beam.Scope, col beam.PCollection, n int, less interface{}) beam.PCollection
- func LargestPerKey(s beam.Scope, col beam.PCollection, n int, less interface{}) beam.PCollection
- func Smallest(s beam.Scope, col beam.PCollection, n int, less interface{}) beam.PCollection
- func SmallestPerKey(s beam.Scope, col beam.PCollection, n int, less interface{}) beam.PCollection
Constants ¶
This section is empty.
Variables ¶
This section is empty.
Functions ¶
func Largest ¶
func Largest(s beam.Scope, col beam.PCollection, n int, less interface{}) beam.PCollection
Largest returns the largest N elements of a PCollection<T>. The order is defined by the comparator, less : T x T -> bool. It returns a single-element PCollection<[]T> with a slice of the N largest elements.
Example use:
col := beam.Create(s, 1, 11, 7, 5, 10) top2 := stats.Largest(s, col, 2, less) // PCollection<[]int> with [11, 10] as the only element.
func LargestPerKey ¶
func LargestPerKey(s beam.Scope, col beam.PCollection, n int, less interface{}) beam.PCollection
LargestPerKey returns the largest N values for each key of a PCollection<KV<K,T>>. The order is defined by the comparator, less : T x T -> bool. It returns a single-element PCollection<KV<K,[]T>> with a slice of the N largest elements for each key.
func Smallest ¶
func Smallest(s beam.Scope, col beam.PCollection, n int, less interface{}) beam.PCollection
Smallest returns the smallest N elements of a PCollection<T>. The order is defined by the comparator, less : T x T -> bool. It returns a single-element PCollection<[]T> with a slice of the N smallest elements.
Example use:
col := beam.Create(s, 1, 11, 7, 5, 10) bottom2 := stats.Smallest(s, col, 2, less) // PCollection<[]int> with [1, 5] as the only element.
func SmallestPerKey ¶
func SmallestPerKey(s beam.Scope, col beam.PCollection, n int, less interface{}) beam.PCollection
SmallestPerKey returns the smallest N values for each key of a PCollection<KV<K,T>>. The order is defined by the comparator, less : T x T -> bool. It returns a single-element PCollection<KV<K,[]T>> with a slice of the N smallest elements for each key.
Types ¶
This section is empty.
Source Files