org.apache.hadoop.hbase.master

类 TableNamespaceManager

java.lang.Object

org.apache.hadoop.hbase.master.TableNamespaceManager

所有已实现的接口:

Stoppable

@InterfaceAudience.Private
public class TableNamespaceManager
extends Object
implements Stoppable

This is a helper class used internally to manage the namespace metadata that is stored in TableName.NAMESPACE_TABLE_NAME. It also mirrors updates to the ZK store by forwarding updates to ZKNamespaceManager. WARNING: Do not use. Go via the higher-level ClusterSchema API instead. This manager is likely to go aways anyways.

字段概要

字段

限定符和类型	字段和说明
static String	KEY_MAX_REGIONS
static String	KEY_MAX_TABLES

方法概要

限定符和类型	方法和说明
boolean	doesNamespaceExist(String namespaceName)
NamespaceDescriptor	get(String name)
static long	getMaxRegions(NamespaceDescriptor ns)
static long	getMaxTables(NamespaceDescriptor ns)
void	insertIntoNSTable(NamespaceDescriptor ns)
boolean	isStopped()
boolean	isTableAvailableAndInitialized() This method checks if the namespace table is assigned and then tries to create its Table reference.
NavigableSet<NamespaceDescriptor>	list()
void	removeFromNSTable(String namespaceName)
void	removeFromZKNamespaceManager(String namespaceName)
void	start()
void	stop(String why)
void	updateZKNamespaceManager(NamespaceDescriptor ns)
void	validateTableAndRegionCount(NamespaceDescriptor desc)

从类继承的方法 java.lang.Object

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

字段详细资料

KEY_MAX_REGIONS

public static final String KEY_MAX_REGIONS

另请参阅:

常量字段值

KEY_MAX_TABLES

public static final String KEY_MAX_TABLES

另请参阅:

常量字段值

方法详细资料

start

public void start()
           throws IOException

抛出:

IOException

doesNamespaceExist

public boolean doesNamespaceExist(String namespaceName)
                           throws IOException

抛出:

IOException

get

public NamespaceDescriptor get(String name)
                        throws IOException

抛出:

IOException

insertIntoNSTable

public void insertIntoNSTable(NamespaceDescriptor ns)
                       throws IOException

抛出:

IOException

updateZKNamespaceManager

public void updateZKNamespaceManager(NamespaceDescriptor ns)
                              throws IOException

抛出:

IOException

removeFromNSTable

public void removeFromNSTable(String namespaceName)
                       throws IOException

抛出:

IOException

removeFromZKNamespaceManager

public void removeFromZKNamespaceManager(String namespaceName)
                                  throws IOException

抛出:

IOException

list

public NavigableSet<NamespaceDescriptor> list()
                                       throws IOException

抛出:

IOException

isTableAvailableAndInitialized

public boolean isTableAvailableAndInitialized()
                                       throws IOException

This method checks if the namespace table is assigned and then tries to create its Table reference. If it was already created before, it also makes sure that the connection isn't closed.

返回:

true if the namespace table manager is ready to serve, false otherwise

抛出:

IOException

validateTableAndRegionCount

public void validateTableAndRegionCount(NamespaceDescriptor desc)
                                 throws IOException

抛出:

IOException

getMaxTables

public static long getMaxTables(NamespaceDescriptor ns)
                         throws IOException

抛出:

IOException

getMaxRegions

public static long getMaxRegions(NamespaceDescriptor ns)
                          throws IOException

抛出:

IOException

isStopped

public boolean isStopped()

指定者:

isStopped 在接口中 Stoppable

stop

public void stop(String why)

指定者:

stop 在接口中 Stoppable