org.apache.flink.runtime.jobmanager.splitassigner

Class LocatableInputSplitAssigner

java.lang.Object

org.apache.flink.runtime.jobmanager.splitassigner.LocatableInputSplitAssigner

All Implemented Interfaces:

InputSplitAssigner

public final class LocatableInputSplitAssigner
extends Object
implements InputSplitAssigner

The locatable input split assigner is a specific implementation of the InputSplitAssigner interface for LocatableInputSplit objects. The locatable input split assigner offers to take the storage location of the individual locatable input splits into account. It attempts to always assign the splits to vertices in a way that the data locality is preserved as well as possible.

This class is thread-safe.

Constructor Summary

Constructors

Constructor and Description
LocatableInputSplitAssigner()

Method Summary

Methods

Modifier and Type	Method and Description
InputSplit	getNextInputSplit(ExecutionVertex vertex) Returns the next input split that shall be consumed by the given input vertex.
void	registerGroupVertex(ExecutionGroupVertex groupVertex) Registers an input vertex with the input split assigner.
void	unregisterGroupVertex(ExecutionGroupVertex groupVertex) Unregisters an input vertex from the input split assigner.

Methods inherited from class java.lang.Object

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

Constructor Detail

LocatableInputSplitAssigner

public LocatableInputSplitAssigner()

Method Detail

registerGroupVertex

public void registerGroupVertex(ExecutionGroupVertex groupVertex)

Description copied from interface: InputSplitAssigner

Registers an input vertex with the input split assigner.

Specified by:

registerGroupVertex in interface InputSplitAssigner

Parameters:

groupVertex - the input vertex to register

unregisterGroupVertex

public void unregisterGroupVertex(ExecutionGroupVertex groupVertex)

Description copied from interface: InputSplitAssigner

Unregisters an input vertex from the input split assigner. All resources allocated to the input vertex are freed as part of this operation.

Specified by:

unregisterGroupVertex in interface InputSplitAssigner

Parameters:

groupVertex - the input vertex to unregister

getNextInputSplit

public InputSplit getNextInputSplit(ExecutionVertex vertex)

Description copied from interface: InputSplitAssigner

Returns the next input split that shall be consumed by the given input vertex.

Specified by:

getNextInputSplit in interface InputSplitAssigner

Parameters:

vertex - the vertex for which the next input split to be consumed shall be determined

Returns:

the next input split to be consumed or null if no more splits shall be consumed by the given vertex