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apache-beam
- coGroupBy<T, K>(key: string | string[] | ((element: T) => K), keyName?: undefined | string): PTransform<{
[key: string]: PCollection<any>;
}, PCollection<{
key: K;
values: {
[key: string]: Iterable<any>;
};
}>>
-
Parameters
-
key: string | string[] | ((element: T) => K)
-
keyName: undefined | string = undefined
Returns PTransform<{
[key: string]: PCollection<any>;
}, PCollection<{
key: K;
values: {
[key: string]: Iterable<any>;
};
}>>