org.apache.hadoop.hbase.favored

类 FavoredNodesManager

java.lang.Object

org.apache.hadoop.hbase.favored.FavoredNodesManager

@InterfaceAudience.Private
public class FavoredNodesManager
extends Object

FavoredNodesManager is responsible for maintaining favored nodes info in internal cache and META table. Its the centralized store for all favored nodes information. All reads and updates should be done through this class. There should only be one instance of FavoredNodesManager in Master. FavoredNodesPlan and favored node information from SnapshotOfRegionAssignmentFromMeta should not be used outside this class (except for tools that only read or fortest cases). All other classes including Favored balancers and FavoredNodeAssignmentHelper should use FavoredNodesManager for any read/write/deletes to favored nodes.

构造器概要

构造器

构造器和说明
FavoredNodesManager(MasterServices masterServices)

方法概要

限定符和类型	方法和说明
void	deleteFavoredNodesForRegion(RegionInfo regionInfo)
void	deleteFavoredNodesForRegions(Collection<RegionInfo> regionInfoList)
static Set<RegionInfo>	filterNonFNApplicableRegions(Collection<RegionInfo> regions) Filter and return regions for which favored nodes is not applicable.
int	getDataNodePort()
List<ServerName>	getFavoredNodes(RegionInfo regionInfo)
List<ServerName>	getFavoredNodesWithDNPort(RegionInfo regionInfo)
RackManager	getRackManager()
Set<RegionInfo>	getRegionsOfFavoredNode(ServerName serverName)
Map<ServerName,List<Integer>>	getReplicaLoad(List<ServerName> servers)
void	initialize(SnapshotOfRegionAssignmentFromMeta snapshot)
static boolean	isFavoredNodeApplicable(RegionInfo regionInfo)
void	updateFavoredNodes(Map<RegionInfo,List<ServerName>> regionFNMap)

从类继承的方法 java.lang.Object

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

构造器详细资料

FavoredNodesManager

public FavoredNodesManager(MasterServices masterServices)

方法详细资料

initialize

public void initialize(SnapshotOfRegionAssignmentFromMeta snapshot)

getDataNodePort

public int getDataNodePort()

getFavoredNodes

public List<ServerName> getFavoredNodes(RegionInfo regionInfo)

isFavoredNodeApplicable

public static boolean isFavoredNodeApplicable(RegionInfo regionInfo)

filterNonFNApplicableRegions

public static Set<RegionInfo> filterNonFNApplicableRegions(Collection<RegionInfo> regions)

Filter and return regions for which favored nodes is not applicable.

返回:

set of regions for which favored nodes is not applicable

getFavoredNodesWithDNPort

public List<ServerName> getFavoredNodesWithDNPort(RegionInfo regionInfo)

updateFavoredNodes

public void updateFavoredNodes(Map<RegionInfo,List<ServerName>> regionFNMap)
                        throws IOException

抛出:

IOException

getReplicaLoad

public Map<ServerName,List<Integer>> getReplicaLoad(List<ServerName> servers)

deleteFavoredNodesForRegion

public void deleteFavoredNodesForRegion(RegionInfo regionInfo)

deleteFavoredNodesForRegions

public void deleteFavoredNodesForRegions(Collection<RegionInfo> regionInfoList)

getRegionsOfFavoredNode

public Set<RegionInfo> getRegionsOfFavoredNode(ServerName serverName)

getRackManager

public RackManager getRackManager()