Factory interface for creating external source handlers dynamically.
Mutation is the general case of an Event Imagine a user impression/view stream - impressions/views are immutable events Imagine a stream of changes to a credit card transaction stream.
Mutation is the general case of an Event Imagine a user impression/view stream - impressions/views are immutable events Imagine a stream of changes to a credit card transaction stream.
The schema needs to contain a ts(milliseconds as a java Long)
For the entities case, mutation_ts when absent will use ts as a replacement
Java types corresponding to the schema types. StreamDecoder should produce mutations that comply. NOTE: everything is nullable (hence boxed) IntType java.lang.Integer LongType java.lang.Long DoubleType java.lang.Double FloatType java.lang.Float ShortType java.lang.Short BooleanType java.lang.Boolean ByteType java.lang.Byte StringType java.lang.String BinaryType Array[Byte] ListType java.util.List[Byte] MapType java.util.Map[Byte] StructType Array[Any]
TileCodec is a helper class that allows for the creation of pre-aggregated tiles of feature values.
TileCodec is a helper class that allows for the creation of pre-aggregated tiles of feature values. These pre-aggregated tiles can be used in the serving layer to compute the final feature values along with batch pre-aggregates produced by GroupByUploads. The pre-aggregated tiles are serialized as Avro and indicate whether the tile is complete or not (partial aggregates)
Utility to create a cache with LRU semantics.
Utility to create a cache with LRU semantics.
The original purpose of having an LRU cache in Chronon is to cache KVStore calls and decoded IRs in the Fetcher. This helps decrease to feature serving latency.
Factory interface for creating external source handlers dynamically.
Implementations of this factory can be registered with ExternalSourceRegistry to enable dynamic creation of ExternalSourceHandler instances based on external source configurations at runtime.
The factory pattern allows for flexible handler creation where the specific handler implementation can be determined by the ExternalSource configuration, including factory parameters passed through ExternalSourceFactoryConfig.