org.apache.hadoop.hbase.master

Class TableStateManager

java.lang.Object

org.apache.hadoop.hbase.master.TableStateManager

Direct Known Subclasses:

MirroringTableStateManager

public class TableStateManager
extends java.lang.Object

This is a helper class used to manage table states. This class uses hbase:meta as its store for table state so hbase:meta must be online before start() is called. TODO: Cache state. Cut down on meta looksups.

Nested Class Summary

Nested Classes

Modifier and Type	Class and Description
static class	TableStateManager.TableStateNotFoundException

Constructor Summary

Constructors

Constructor and Description
TableStateManager(MasterServices master)

Method Summary

Modifier and Type	Method and Description
protected void	deleteZooKeeper(TableName tableName) Deprecated. Since 2.0.0. To be removed in hbase-3.0.0.
protected void	fixTableState(TableState tableState) For subclasses in case they want to do fixup post hbase:meta.
java.util.Set<TableName>	getTablesInStates(TableState.State... states) Return all tables in given states.
TableState	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	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	updateMetaState(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 java.io.IOException

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

Parameters:

tableName - table to change state for

newState - new state

Throws:

java.io.IOException

setTableStateIfInStates

public TableState setTableStateIfInStates(TableName tableName,
                                          TableState.State newState,
                                          TableState.State... states)
                                   throws java.io.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:

java.io.IOException

setTableStateIfNotInStates

public boolean setTableStateIfNotInStates(TableName tableName,
                                          TableState.State newState,
                                          TableState.State... states)
                                   throws java.io.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:

java.io.IOException

isTableState

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

setDeletedTable

public void setDeletedTable(TableName tableName)
                     throws java.io.IOException

Throws:

java.io.IOException

isTablePresent

public boolean isTablePresent(TableName tableName)
                       throws java.io.IOException

Throws:

java.io.IOException

getTablesInStates

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

Return all tables in given states.

Parameters:

states - filter by states

Returns:

tables in given states

Throws:

java.io.IOException

getTableState

public TableState getTableState(TableName tableName)
                         throws java.io.IOException

Throws:

java.io.IOException

updateMetaState

protected void updateMetaState(TableName tableName,
                               TableState.State newState)
                        throws java.io.IOException

Throws:

java.io.IOException

readMetaState

protected TableState readMetaState(TableName tableName)
                            throws java.io.IOException

Throws:

java.io.IOException

start

public void start()
           throws java.io.IOException

Throws:

java.io.IOException

fixTableState

protected void fixTableState(TableState tableState)
                      throws java.io.IOException

For subclasses in case they want to do fixup post hbase:meta.

Throws:

java.io.IOException

deleteZooKeeper

@Deprecated
protected void deleteZooKeeper(TableName tableName)

Deprecated. Since 2.0.0. To be removed in hbase-3.0.0.

Utility method that knows how to delete the old hbase-1.x table state znode. Used also by the Mirroring subclass.