org.apache.flink.streaming.api.graph

类 StreamGraphUserHashHasher

java.lang.Object

org.apache.flink.streaming.api.graph.StreamGraphUserHashHasher

所有已实现的接口:

StreamGraphHasher

public class StreamGraphUserHashHasher
extends Object
implements StreamGraphHasher

StreamGraphHasher that works with user provided hashes. This is useful in case we want to set (alternative) hashes explicitly, e.g. to provide a way of manual backwards compatibility between versions when the mechanism of generating hashes has changed in an incompatible way.

构造器概要

构造器

构造器和说明
StreamGraphUserHashHasher()

方法概要

限定符和类型	方法和说明
Map<Integer,byte[]>	traverseStreamGraphAndGenerateHashes(StreamGraph streamGraph) Returns a map with a hash for each StreamNode of the StreamGraph.

从类继承的方法 java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

构造器详细资料

StreamGraphUserHashHasher

public StreamGraphUserHashHasher()

方法详细资料

traverseStreamGraphAndGenerateHashes

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

从接口复制的说明: StreamGraphHasher

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.

指定者:

traverseStreamGraphAndGenerateHashes 在接口中 StreamGraphHasher