Sum
JavadocTransforms for computing the sum of the elements in a collection, or the sum of the values associated with each key in a collection of key-value pairs.
Examples
Example 1: get the sum of a PCollection of Doubles.
Example 2: calculate the sum of the Integers associated with each unique key (which is of type String).
Related transforms
- Count counts the number of elements within each aggregation
Last updated on 2025/07/11
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