org.apache.hadoop.hbase.master

Class TableStateManager

java.lang.Object

org.apache.hadoop.hbase.master.TableStateManager

@InterfaceAudience.Private
public class TableStateManager
extends Object

This is a helper class used to manage table states. States persisted in tableinfo and cached internally. TODO: Cache state. Cut down on meta looksups.

Constructor Summary

Constructors

Constructor and Description
TableStateManager(MasterServices master)

Method Summary

Modifier and Type	Method and Description
static void	fixTableStates(TableDescriptors tableDescriptors, Connection connection)
Set<TableName>	getTablesInStates(TableState.State... states) Return all tables in given states.
TableState.State	getTableState(TableName tableName)
boolean	isTablePresent(TableName tableName)
boolean	isTableState(TableName tableName, TableState.State... states)
protected TableState	readMetaState(TableName tableName)
void	setDeletedTable(TableName tableName)
void	setTableState(TableName tableName, TableState.State newState) Set table state to provided.
TableState.State	setTableStateIfInStates(TableName tableName, TableState.State newState, TableState.State... states) Set table state to provided but only if table in specified states Caller should lock table on write.
boolean	setTableStateIfNotInStates(TableName tableName, TableState.State newState, TableState.State... states) Set table state to provided but only if table not in specified states Caller should lock table on write.
void	start()
protected void	udpateMetaState(TableName tableName, TableState.State newState)

Methods inherited from class java.lang.Object

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

Constructor Detail

TableStateManager

public TableStateManager(MasterServices master)

Method Detail

setTableState

public void setTableState(TableName tableName,
                          TableState.State newState)
                   throws IOException

Set table state to provided. Caller should lock table on write.

Parameters:

tableName - table to change state for

newState - new state

Throws:

IOException

setTableStateIfInStates

public TableState.State setTableStateIfInStates(TableName tableName,
                                                TableState.State newState,
                                                TableState.State... states)
                                         throws IOException

Set table state to provided but only if table in specified states Caller should lock table on write.

Parameters:

tableName - table to change state for

newState - new state

states - states to check against

Returns:

null if succeed or table state if failed

Throws:

IOException

setTableStateIfNotInStates

public boolean setTableStateIfNotInStates(TableName tableName,
                                          TableState.State newState,
                                          TableState.State... states)
                                   throws IOException

Set table state to provided but only if table not in specified states Caller should lock table on write.

Parameters:

tableName - table to change state for

newState - new state

states - states to check against

Throws:

IOException

isTableState

public boolean isTableState(TableName tableName,
                            TableState.State... states)

setDeletedTable

public void setDeletedTable(TableName tableName)
                     throws IOException

Throws:

IOException

isTablePresent

public boolean isTablePresent(TableName tableName)
                       throws IOException

Throws:

IOException

getTablesInStates

public Set<TableName> getTablesInStates(TableState.State... states)
                                 throws IOException

Return all tables in given states.

Parameters:

states - filter by states

Returns:

tables in given states

Throws:

IOException

getTableState

@NonNull
public TableState.State getTableState(TableName tableName)
                                        throws IOException

Throws:

IOException

udpateMetaState

protected void udpateMetaState(TableName tableName,
                               TableState.State newState)
                        throws IOException

Throws:

IOException

readMetaState

@Nullable
protected TableState readMetaState(TableName tableName)
                                      throws IOException

Throws:

IOException

start

public void start()
           throws IOException

Throws:

IOException

fixTableStates

public static void fixTableStates(TableDescriptors tableDescriptors,
                                  Connection connection)
                           throws IOException

Throws:

IOException