org.apache.flink.streaming.api.graph

Interface StreamGraphHasher

All Known Implementing Classes:

StreamGraphHasherV2, StreamGraphUserHashHasher

public interface StreamGraphHasher

Interface for different implementations of generating hashes over a stream graph.

Method Summary

Modifier and Type	Method and Description
Map<Integer,byte[]>	traverseStreamGraphAndGenerateHashes(StreamGraph streamGraph) Returns a map with a hash for each StreamNode of the StreamGraph.

Method Detail

traverseStreamGraphAndGenerateHashes

Map<Integer,byte[]> traverseStreamGraphAndGenerateHashes(StreamGraph streamGraph)

Returns a map with a hash for each StreamNode of the StreamGraph. The hash is used as the JobVertexID in order to identify nodes across job submissions if they didn't change.