alluxio.worker.block

Class DefaultBlockStoreMeta

java.lang.Object

alluxio.worker.block.DefaultBlockStoreMeta

All Implemented Interfaces:

BlockStoreMeta

@ThreadSafe
public final class DefaultBlockStoreMeta
extends Object
implements BlockStoreMeta

This class holds the metadata information of a block store.

TODO(bin): Use proto buf to represent this information.

Constructor Summary

Constructors

Modifier	Constructor and Description
protected	DefaultBlockStoreMeta(BlockMetadataManager manager, boolean shouldIncludeBlockIds) Creates a new instance of DefaultBlockStoreMeta.

Method Summary

Modifier and Type	Method and Description
Map<String,List<Long>>	getBlockList() Note: This method is only available when users initialize the blockStoreMeta with full block meta requirement.
Map<BlockStoreLocation,List<Long>>	getBlockListByStorageLocation() Note: This method is only available when users initialize the blockStoreMeta with full block meta requirement.
long	getCapacityBytes()
Map<Pair<String,String>,Long>	getCapacityBytesOnDirs()
Map<String,Long>	getCapacityBytesOnTiers()
Map<String,List<String>>	getDirectoryPathsOnTiers()
Map<String,List<String>>	getLostStorage()
int	getNumberOfBlocks() Note: This is only available when blocks are included.
StorageTierAssoc	getStorageTierAssoc()
long	getUsedBytes()
Map<Pair<String,String>,Long>	getUsedBytesOnDirs()
Map<String,Long>	getUsedBytesOnTiers()

Methods inherited from class java.lang.Object

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

Constructor Detail

DefaultBlockStoreMeta

protected DefaultBlockStoreMeta(BlockMetadataManager manager,
                                boolean shouldIncludeBlockIds)

Creates a new instance of DefaultBlockStoreMeta.

Parameters:

manager - a block metadata manager handle

Method Detail

getBlockList

public Map<String,List<Long>> getBlockList()

Description copied from interface: BlockStoreMeta

Note: This method is only available when users initialize the blockStoreMeta with full block meta requirement.

Specified by:

getBlockList in interface BlockStoreMeta

Returns:

A mapping from storage tier alias to blocks

getBlockListByStorageLocation

public Map<BlockStoreLocation,List<Long>> getBlockListByStorageLocation()

Description copied from interface: BlockStoreMeta

Note: This method is only available when users initialize the blockStoreMeta with full block meta requirement.

Specified by:

getBlockListByStorageLocation in interface BlockStoreMeta

Returns:

A mapping from storage location alias to blocks

getCapacityBytes

public long getCapacityBytes()

Specified by:

getCapacityBytes in interface BlockStoreMeta

Returns:

the capacity in bytes

getCapacityBytesOnTiers

public Map<String,Long> getCapacityBytesOnTiers()

Specified by:

getCapacityBytesOnTiers in interface BlockStoreMeta

Returns:

a mapping from tier aliases to capacity in bytes

getCapacityBytesOnDirs

public Map<Pair<String,String>,Long> getCapacityBytesOnDirs()

Specified by:

getCapacityBytesOnDirs in interface BlockStoreMeta

Returns:

a mapping from tier directory-path pairs to capacity in bytes

getDirectoryPathsOnTiers

public Map<String,List<String>> getDirectoryPathsOnTiers()

Specified by:

getDirectoryPathsOnTiers in interface BlockStoreMeta

Returns:

a mapping from tier aliases to directory paths in that tier

getLostStorage

public Map<String,List<String>> getLostStorage()

Specified by:

getLostStorage in interface BlockStoreMeta

Returns:

a mapping from tier alias to lost storage paths

getNumberOfBlocks

public int getNumberOfBlocks()

Description copied from interface: BlockStoreMeta

Note: This is only available when blocks are included.

Specified by:

getNumberOfBlocks in interface BlockStoreMeta

Returns:

the number of blocks

getUsedBytes

public long getUsedBytes()

Specified by:

getUsedBytes in interface BlockStoreMeta

Returns:

the used capacity in bytes

getUsedBytesOnTiers

public Map<String,Long> getUsedBytesOnTiers()

Specified by:

getUsedBytesOnTiers in interface BlockStoreMeta

Returns:

a mapping from tier aliases to used capacity in bytes

getUsedBytesOnDirs

public Map<Pair<String,String>,Long> getUsedBytesOnDirs()

Specified by:

getUsedBytesOnDirs in interface BlockStoreMeta

Returns:

a mapping from tier directory-path pairs to used capacity in bytes

getStorageTierAssoc

public StorageTierAssoc getStorageTierAssoc()

Specified by:

getStorageTierAssoc in interface BlockStoreMeta

Returns:

the storage tier mapping