Package org.apache.flink.runtime.shuffle

Class ShuffleUtils

java.lang.Object

org.apache.flink.runtime.shuffle.ShuffleUtils

public class ShuffleUtils
extends Object

Common utility methods for shuffle service.

Method Summary

Modifier and Type	Method	Description
static <T,SD extends ShuffleDescriptor> T	applyWithShuffleTypeCheck(Class<SD> shuffleDescriptorClass, ShuffleDescriptor shuffleDescriptor, Function<UnknownShuffleDescriptor,T> functionOfUnknownDescriptor, Function<SD,T> functionOfKnownDescriptor)	Apply different functions to known and unknown ShuffleDescriptors.

Methods inherited from class java.lang.Object

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

Method Detail

applyWithShuffleTypeCheck

public static <T,SD extends ShuffleDescriptor> T applyWithShuffleTypeCheck(Class<SD> shuffleDescriptorClass,
                                                                                 ShuffleDescriptor shuffleDescriptor,
                                                                                 Function<UnknownShuffleDescriptor,T> functionOfUnknownDescriptor,
                                                                                 Function<SD,T> functionOfKnownDescriptor)

Apply different functions to known and unknown ShuffleDescriptors.

Also casts known ShuffleDescriptor.

Type Parameters:

T - return type of called functions

SD - concrete type of shuffleDescriptor to check

Parameters:

shuffleDescriptorClass - concrete class of shuffleDescriptor

shuffleDescriptor - concrete shuffle descriptor to check

functionOfUnknownDescriptor - supplier to call in case shuffleDescriptor is unknown

functionOfKnownDescriptor - function to call in case shuffleDescriptor is known

Returns:

result of either function call