org.apache.tez.runtime.common.resources

Class MemoryDistributor

java.lang.Object

org.apache.tez.runtime.common.resources.MemoryDistributor

@InterfaceAudience.Private
public class MemoryDistributor
extends Object

Constructor Summary

Constructors

Constructor and Description
MemoryDistributor(int numTotalInputs, int numTotalOutputs, org.apache.hadoop.conf.Configuration conf)

Method Summary

Modifier and Type	Method and Description
void	makeInitialAllocations() Used by the Tez framework to distribute initial memory after components have made their initial requests.
void	requestMemory(long requestSize, org.apache.tez.runtime.api.MemoryUpdateCallback callback, org.apache.tez.runtime.api.TaskContext taskContext, org.apache.tez.dag.api.EntityDescriptor<?> descriptor) Used by the Tez framework to request memory on behalf of user requests.

Methods inherited from class java.lang.Object

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

Constructor Detail

MemoryDistributor

public MemoryDistributor(int numTotalInputs,
                         int numTotalOutputs,
                         org.apache.hadoop.conf.Configuration conf)

Parameters:

numTotalInputs - total number of Inputs for the task

numTotalOutputs - total number of Outputs for the task

conf - Tez specific task configuration

Method Detail

requestMemory

public void requestMemory(long requestSize,
                          org.apache.tez.runtime.api.MemoryUpdateCallback callback,
                          org.apache.tez.runtime.api.TaskContext taskContext,
                          org.apache.tez.dag.api.EntityDescriptor<?> descriptor)

Used by the Tez framework to request memory on behalf of user requests.

makeInitialAllocations

public void makeInitialAllocations()
                            throws org.apache.tez.dag.api.TezException

Used by the Tez framework to distribute initial memory after components have made their initial requests.

Throws:

org.apache.tez.dag.api.TezException