org.apache.flink.streaming.util.graph

Class StreamGraphUtils

java.lang.Object

org.apache.flink.streaming.util.graph.StreamGraphUtils

public final class StreamGraphUtils
extends Object

Utility class that contains helper methods to generating StreamGraph.

Constructor Summary

Constructors

Constructor and Description
StreamGraphUtils()

Method Summary

Modifier and Type	Method and Description
static <T> void	configureBufferTimeout(StreamGraph streamGraph, int nodeId, org.apache.flink.api.dag.Transformation<T> transformation, long defaultBufferTimeout) Configure a stream node's buffer timeout according to the given transformation.
static void	validateTransformationUid(StreamGraph streamGraph, org.apache.flink.api.dag.Transformation<?> transformation) Throw IllegalStateException if the PhysicalTransformation's uid or hash is not set when auto generate uid is disabled.

Methods inherited from class java.lang.Object

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

Constructor Detail

StreamGraphUtils

public StreamGraphUtils()

Method Detail

validateTransformationUid

public static void validateTransformationUid(StreamGraph streamGraph,
                                             org.apache.flink.api.dag.Transformation<?> transformation)

Throw IllegalStateException if the PhysicalTransformation's uid or hash is not set when auto generate uid is disabled.

Parameters:

streamGraph - The given graph that the transformation is added to

transformation - The transformation needed to validate

configureBufferTimeout

public static <T> void configureBufferTimeout(StreamGraph streamGraph,
                                              int nodeId,
                                              org.apache.flink.api.dag.Transformation<T> transformation,
                                              long defaultBufferTimeout)

Configure a stream node's buffer timeout according to the given transformation.

Parameters:

streamGraph - The StreamGraph the node belongs to

nodeId - The node's id

transformation - A given transformation

defaultBufferTimeout - The default buffer timeout value