Sample Transform

The sample transform randomly samples a data stream to create a smaller stream. As input data objects are added and removed, the sampled values may change in first-in, first-out manner. This transform uses reservoir sampling to maintain a representative sample of the stream.

Transform Parameters

Property Type Description
size Number The maximum number of data objects to include in the sample. The default value is 1000.


{"type": "sample", "size": 500}

Filters a data stream to a random sample of at most 500 data objects.