org.apache.flink.runtime.jobmanager.splitassigner

Class InputSplitManager

java.lang.Object

org.apache.flink.runtime.jobmanager.splitassigner.InputSplitManager

public final class InputSplitManager
extends Object

The input split manager is responsible for serving input splits to AbstractInputTask objects at runtime. Before passed on to the DefaultScheduler, an ExecutionGraph is registered with the input split manager and all included input vertices of the graph register their generated input splits with the manager. Each type of input split can be assigned to a specific InputSplitAssigner which is loaded by the input split manager at runtime.

This class is thread-safe.

Constructor Summary

Constructors

Constructor and Description
InputSplitManager()

Method Summary

Methods

Modifier and Type	Method and Description
InputSplit	getNextInputSplit(ExecutionVertex vertex, int sequenceNumber) Returns the next input split the input split manager (or the responsible InputSplitAssigner to be more precise) has chosen for the given vertex to consume.
void	registerJob(ExecutionGraph executionGraph) Registers a new job represented by its ExecutionGraph with the input split manager.
void	unregisterJob(ExecutionGraph executionGraph) Unregisters the given job represented by its ExecutionGraph with the input split manager.

Methods inherited from class java.lang.Object

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

Constructor Detail

InputSplitManager

public InputSplitManager()

Method Detail

registerJob

public void registerJob(ExecutionGraph executionGraph)

Registers a new job represented by its ExecutionGraph with the input split manager.

Parameters:

executionGraph - the job to be registered

unregisterJob

public void unregisterJob(ExecutionGraph executionGraph)

Unregisters the given job represented by its ExecutionGraph with the input split manager.

Parameters:

executionGraph - the job to be unregistered

getNextInputSplit

public InputSplit getNextInputSplit(ExecutionVertex vertex,
                           int sequenceNumber)

Returns the next input split the input split manager (or the responsible InputSplitAssigner to be more precise) has chosen for the given vertex to consume.

Parameters:

vertex - the vertex for which the next input split is to be determined

sequenceNumber - the sequence number of the vertex's request

Returns:

the next input split to consume or null if the vertex shall consume no more input splits