alluxio

Interface StorageTierAssoc

All Known Implementing Classes:

AbstractStorageTierAssoc, MasterStorageTierAssoc, WorkerStorageTierAssoc

public interface StorageTierAssoc

A two-way mapping between storage tier aliases and ordinal numbers from configuration.

Method Summary

Modifier and Type	Method and Description
String	getAlias(int ordinal)
List<String>	getOrderedStorageAliases()
int	getOrdinal(String alias)
List<Pair<BlockStoreLocation,BlockStoreLocation>>	intersectionList()
int	size()

Method Detail

getAlias

String getAlias(int ordinal)

Parameters:

ordinal - a storage tier ordinal

Returns:

the storage tier alias matching the given ordinal

getOrdinal

int getOrdinal(String alias)

Parameters:

alias - a storage tier alias

Returns:

the storage tier ordinal matching the given alias

size

int size()

Returns:

the size of the alias-ordinal mapping

getOrderedStorageAliases

List<String> getOrderedStorageAliases()

Returns:

a list of storage tier aliases in order of their ordinal value

intersectionList

List<Pair<BlockStoreLocation,BlockStoreLocation>> intersectionList()

Returns:

list of intersections between tier levels