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See:
Description
| Class Summary | |
|---|---|
| ReservoirSample | Maintains an in-memory reservoir to produce a uniformly random sample of a given size. |
| ReservoirSample.Final | |
| ReservoirSample.Initial | |
| ReservoirSample.Intermediate | |
| SampleByKey | Provides a way of sampling tuples based on certain fields. |
| WeightedSample | Create a new bag by performing a weighted sampling without replacement from the input bag. |
Sampling UDFs, including weighted sample, reservoir sampling, sampling by key, etc.
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