org.apache.hadoop.hbase.master

Class RegionState

java.lang.Object

org.apache.hadoop.hbase.master.RegionState

All Implemented Interfaces:

org.apache.hadoop.io.Writable

@InterfaceAudience.Private
public class RegionState
extends Object
implements org.apache.hadoop.io.Writable

State of a Region while undergoing transitions. Region state cannot be modified except the stamp field. So it is almost immutable.

Nested Class Summary

Nested Classes

Modifier and Type	Class and Description
static class	RegionState.State

Constructor Summary

Constructors

Constructor and Description
RegionState()
RegionState(HRegionInfo region, RegionState.State state)
RegionState(HRegionInfo region, RegionState.State state, long stamp, ServerName serverName)

Method Summary

Methods

Modifier and Type	Method and Description
ClusterStatusProtos.RegionState	convert() Convert a RegionState to an HBaseProtos.RegionState
static RegionState	convert(ClusterStatusProtos.RegionState proto) Convert a protobuf HBaseProtos.RegionState to a RegionState
HRegionInfo	getRegion()
ServerName	getServerName()
long	getStamp()
RegionState.State	getState()
boolean	isClosed()
boolean	isClosing()
boolean	isFailedClose()
boolean	isFailedOpen()
boolean	isMerged()
boolean	isMerging()
boolean	isMergingNew()
boolean	isOffline()
boolean	isOnServer(ServerName sn)
boolean	isOpened()
boolean	isOpening()
boolean	isOpenOrMergingNewOnServer(ServerName sn)
boolean	isOpenOrMergingOnServer(ServerName sn)
boolean	isOpenOrSplittingNewOnServer(ServerName sn)
boolean	isOpenOrSplittingOnServer(ServerName sn)
boolean	isPendingClose()
boolean	isPendingCloseOrClosing()
boolean	isPendingCloseOrClosingOnServer(ServerName sn)
boolean	isPendingOpen()
boolean	isPendingOpenOrOpening()
boolean	isPendingOpenOrOpeningOnServer(ServerName sn)
boolean	isReadyToOffline() Check if a region state can transition to offline
boolean	isReadyToOnline() Check if a region state can transition to online
boolean	isSplit()
boolean	isSplitting()
boolean	isSplittingNew()
boolean	isUnassignable() Check if a region state is one of offline states that can't transition to pending_close/closing (unassign/offline)
static boolean	isUnassignable(RegionState.State state) Check if a region state is one of offline states that can't transition to pending_close/closing (unassign/offline)
void	readFields(DataInput in) Deprecated. Writables are going away
protected void	setTimestamp(long timestamp)
String	toDescriptiveString() A slower (but more easy-to-read) stringification
String	toString()
void	updateTimestampToNow()
void	write(DataOutput out) Deprecated. Writables are going away

Methods inherited from class java.lang.Object

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

Constructor Detail

RegionState

public RegionState()

RegionState

public RegionState(HRegionInfo region,
           RegionState.State state)

RegionState

public RegionState(HRegionInfo region,
           RegionState.State state,
           long stamp,
           ServerName serverName)

Method Detail

updateTimestampToNow

public void updateTimestampToNow()

getState

public RegionState.State getState()

getStamp

public long getStamp()

getRegion

public HRegionInfo getRegion()

getServerName

public ServerName getServerName()

isClosing

public boolean isClosing()

isClosed

public boolean isClosed()

isPendingClose

public boolean isPendingClose()

isOpening

public boolean isOpening()

isOpened

public boolean isOpened()

isPendingOpen

public boolean isPendingOpen()

isOffline

public boolean isOffline()

isSplitting

public boolean isSplitting()

isSplit

public boolean isSplit()

isSplittingNew

public boolean isSplittingNew()

isFailedOpen

public boolean isFailedOpen()

isFailedClose

public boolean isFailedClose()

isMerging

public boolean isMerging()

isMerged

public boolean isMerged()

isMergingNew

public boolean isMergingNew()

isOpenOrMergingOnServer

public boolean isOpenOrMergingOnServer(ServerName sn)

isOpenOrMergingNewOnServer

public boolean isOpenOrMergingNewOnServer(ServerName sn)

isOpenOrSplittingOnServer

public boolean isOpenOrSplittingOnServer(ServerName sn)

isOpenOrSplittingNewOnServer

public boolean isOpenOrSplittingNewOnServer(ServerName sn)

isPendingOpenOrOpeningOnServer

public boolean isPendingOpenOrOpeningOnServer(ServerName sn)

isPendingOpenOrOpening

public boolean isPendingOpenOrOpening()

isPendingCloseOrClosingOnServer

public boolean isPendingCloseOrClosingOnServer(ServerName sn)

isPendingCloseOrClosing

public boolean isPendingCloseOrClosing()

isOnServer

public boolean isOnServer(ServerName sn)

isReadyToOffline

public boolean isReadyToOffline()

Check if a region state can transition to offline

isReadyToOnline

public boolean isReadyToOnline()

Check if a region state can transition to online

isUnassignable

public boolean isUnassignable()

Check if a region state is one of offline states that can't transition to pending_close/closing (unassign/offline)

isUnassignable

public static boolean isUnassignable(RegionState.State state)

Check if a region state is one of offline states that can't transition to pending_close/closing (unassign/offline)

toString

public String toString()

Overrides:

toString in class Object

toDescriptiveString

public String toDescriptiveString()

A slower (but more easy-to-read) stringification

convert

public ClusterStatusProtos.RegionState convert()

Convert a RegionState to an HBaseProtos.RegionState

Returns:

the converted HBaseProtos.RegionState

convert

public static RegionState convert(ClusterStatusProtos.RegionState proto)

Convert a protobuf HBaseProtos.RegionState to a RegionState

Returns:

the RegionState

setTimestamp

protected void setTimestamp(long timestamp)

readFields

@Deprecated
public void readFields(DataInput in)
                throws IOException

Deprecated. Writables are going away

Specified by:

readFields in interface org.apache.hadoop.io.Writable

Throws:

IOException

write

@Deprecated
public void write(DataOutput out)
           throws IOException

Deprecated. Writables are going away

Specified by:

write in interface org.apache.hadoop.io.Writable

Throws:

IOException