@DefaultAnnotation(value=org.checkerframework.checker.nullness.qual.NonNull.class)
CoGroupByKey transform for joining
 multiple PCollections.See: Description
| Class | Description | 
|---|---|
| CoGbkResult | A row result of a  CoGroupByKey. | 
| CoGbkResult.CoGbkResultCoder | A  CoderforCoGbkResults. | 
| CoGbkResultSchema | A schema for the results of a  CoGroupByKey. | 
| CoGroupByKey<K> | A  PTransformthat performs aCoGroupByKeyon a tuple of tables. | 
| KeyedPCollectionTuple<K> | An immutable tuple of keyed  PCollectionswith key type K. | 
| KeyedPCollectionTuple.TaggedKeyedPCollection<K,V> | A utility class to help ensure coherence of tag and input PCollection types. | 
| RawUnionValue | This corresponds to an integer union tag and value. | 
| UnionCoder | A UnionCoder encodes RawUnionValues. | 
CoGroupByKey transform for joining
 multiple PCollections.