org.apache.tez.runtime.common.resources

Interface InitialMemoryAllocator

All Superinterfaces:

org.apache.hadoop.conf.Configurable

@InterfaceAudience.Private
public interface InitialMemoryAllocator
extends org.apache.hadoop.conf.Configurable

Used to balance memory requests before a task starts executing.

Method Summary

Methods

Modifier and Type	Method and Description
Iterable<Long>	assignMemory(long availableForAllocation, int numTotalInputs, int numTotalOutputs, Iterable<InitialMemoryRequestContext> requests)

Methods inherited from interface org.apache.hadoop.conf.Configurable

getConf, setConf

Method Detail

assignMemory

Iterable<Long> assignMemory(long availableForAllocation,
                          int numTotalInputs,
                          int numTotalOutputs,
                          Iterable<InitialMemoryRequestContext> requests)

Parameters:

availableForAllocation - memory available for allocation

numTotalInputs - number of inputs for the task

numTotalOutputs - number of outputs for the tasks

requests - Iterable view of requests received

Returns:

list of allocations, one per request. This must be ordered in the same order of the requests.