Sample
Pydoc |
Transforms for taking samples of the elements in a collection, or samples of the values associated with each key in a collection of key-value pairs.
Examples
In the following example, we create a pipeline with a PCollection
.
Then, we get a random sample of elements in different ways.
Example 1: Sample elements from a PCollection
We use Sample.FixedSizeGlobally()
to get a fixed-size random sample of elements from the entire PCollection
.
Example 2: Sample elements for each key
We use Sample.FixedSizePerKey()
to get fixed-size random samples for each unique key in a PCollection
of key-values.
Related transforms
- Top finds the largest or smallest element.
Pydoc |
Last updated on 2024/12/06
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