tachyon.worker.allocation

Class AllocateRR

java.lang.Object

tachyon.worker.allocation.AllocateStrategyBase

tachyon.worker.allocation.AllocateRR

All Implemented Interfaces:

AllocateStrategy

public class AllocateRR
extends AllocateStrategyBase

Allocate space on StorageDirs by round robin

Constructor Summary

Constructors

Constructor and Description
AllocateRR()

Method Summary

Methods

Modifier and Type	Method and Description
StorageDir	getStorageDir(StorageDir[] storageDirs, long userId, long requestSizeBytes) Allocate space on StorageDirs.

Methods inherited from class tachyon.worker.allocation.AllocateStrategyBase

fitInPossible

Methods inherited from class java.lang.Object

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

Constructor Detail

AllocateRR

public AllocateRR()

Method Detail

getStorageDir

public StorageDir getStorageDir(StorageDir[] storageDirs,
                       long userId,
                       long requestSizeBytes)

Description copied from interface: AllocateStrategy

Allocate space on StorageDirs. It returns the affordable StorageDir according to AllocateStrategy, null if no enough space available on StorageDirs.

Parameters:

storageDirs - candidates of StorageDirs that space will be allocated in

userId - id of user

requestSizeBytes - size to request in bytes

Returns:

StorageDir assigned, null if no StorageDir is assigned