Max

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Provides a variety of different transforms for computing the maximum values in a collection, either globally or for each key.

Examples

Example 1: get the maximum of a PCollection of Doubles.

PCollection<Double> input = ...;
PCollection<Double> max = input.apply(Max.doublesGlobally());

Example 2: calculate the maximum of the Integers associated with each unique key (which is of type String).

PCollection<KV<String, Integer>> input = ...;
PCollection<KV<String, Integer>> maxPerKey = input
     .apply(Max.integersPerKey());