RandomSampler (Flink : Java 1.20.1-cp2 API)

java.lang.Object
- org.apache.flink.api.java.sampling.RandomSampler<T>

Type Parameters:

T - The type of sampler data.

Direct Known Subclasses:

BernoulliSampler, DistributedRandomSampler, PoissonSampler
```
@Internal
public abstract class RandomSampler<T>
extends Object
```
A data sample is a set of data selected from a statistical population by a defined procedure. RandomSampler helps to create data sample randomly.

Field Summary

Fields
Modifier and Type Field Description

protected Iterator<T> emptyIterable

protected static double EPSILON

Constructor Summary

Constructors
Constructor Description

RandomSampler()

Method Summary

All Methods Instance Methods Abstract Methods
Modifier and Type	Method	Description
`abstract Iterator<T>`	`sample(Iterator<T> input)`	Randomly sample the elements from input in sequence, and return the result iterator.

Methods inherited from class java.lang.Object
clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

- Field Detail
  - EPSILON
```
protected static final double EPSILON
```
    See Also:
    
    Constant Field Values
  - emptyIterable
```
protected final Iterator<T> emptyIterable
```
- Constructor Detail
  - RandomSampler
```
public RandomSampler()
```
- Method Detail
  - sample
```
public abstract Iterator<T> sample(Iterator<T> input)
```
    Randomly sample the elements from input in sequence, and return the result iterator.
    
    Parameters:
    
    input - Source data
    
    Returns:
    
    The sample result.