org.apache.hadoop.hbase
Interface TableDescriptors

All Known Implementing Classes:

FSTableDescriptors

@InterfaceAudience.Private
public interface TableDescriptors

Get, remove and modify table descriptors. Used by servers to host descriptors.

Method Summary

void	add(HTableDescriptor htd) Add or update descriptor
HTableDescriptor	get(TableName tableName)
Map<String,HTableDescriptor>	getAll() Get Map of all HTableDescriptors.
Map<String,HTableDescriptor>	getByNamespace(String name) Get Map of all NamespaceDescriptors for a given namespace.
HTableDescriptor	remove(TableName tablename)
void	setCacheOff() Disables the tabledescriptor cache
void	setCacheOn() Enables the tabledescriptor cache

Method Detail

get

HTableDescriptor get(TableName tableName)
                     throws IOException

Parameters:

tableName -

Returns:

HTableDescriptor for tablename

Throws:

IOException

getByNamespace

Map<String,HTableDescriptor> getByNamespace(String name)
                                            throws IOException

Get Map of all NamespaceDescriptors for a given namespace.

Returns:

Map of all descriptors.

Throws:

IOException

getAll

Map<String,HTableDescriptor> getAll()
                                    throws IOException

Get Map of all HTableDescriptors. Populates the descriptor cache as a side effect.

Returns:

Map of all descriptors.

Throws:

IOException

add

void add(HTableDescriptor htd)
         throws IOException

Add or update descriptor

Parameters:

htd - Descriptor to set into TableDescriptors

Throws:

IOException

remove

HTableDescriptor remove(TableName tablename)
                        throws IOException

Parameters:

tablename -

Returns:

Instance of table descriptor or null if none found.

Throws:

IOException

setCacheOn

void setCacheOn()
                throws IOException

Enables the tabledescriptor cache

Throws:

IOException

setCacheOff

void setCacheOff()
                 throws IOException

Disables the tabledescriptor cache

Throws:

IOException