Package org.apache.hadoop.hbase.master

Class RegionPlan

java.lang.Object

org.apache.hadoop.hbase.master.RegionPlan

All Implemented Interfaces:

Comparable<RegionPlan>

@LimitedPrivate("Coprocessors")
@Evolving
public class RegionPlan
extends Object
implements Comparable<RegionPlan>

Stores the plan for the move of an individual region. Contains info for the region being moved, info for the server the region should be moved from, and info for the server the region should be moved to. The comparable implementation of this class compares only the region information and not the source/dest server info.

Nested Class Summary

Nested Classes

Modifier and Type	Class	Description
static class	RegionPlan.RegionPlanComparator

Field Summary

Fields

Modifier and Type	Field	Description
private ServerName	dest
private final RegionInfo	hri
private final ServerName	source

Constructor Summary

Constructors

Constructor	Description
RegionPlan(RegionInfo hri, ServerName source, ServerName dest)	Instantiate a plan for a region move, moving the specified region from the specified source server to the specified destination server.

Method Summary

Modifier and Type	Method	Description
private static int	compareServerName(ServerName left, ServerName right)
int	compareTo(RegionPlan other)	Compare the region info.
private static int	compareTo(RegionPlan left, RegionPlan right)
boolean	equals(Object obj)
ServerName	getDestination()	Get the destination server for the plan for this region.
RegionInfo	getRegionInfo()
String	getRegionName()	Get the encoded region name for the region this plan is for.
ServerName	getSource()	Get the source server for the plan for this region.
int	hashCode()
void	setDestination(ServerName dest)	Set the destination server for the plan for this region.
String	toString()

Methods inherited from class java.lang.Object

clone, finalize, getClass, notify, notifyAll, wait, wait, wait

Field Details

hri

private final RegionInfo hri

source

private final ServerName source

dest

private ServerName dest

Constructor Details

RegionPlan

public RegionPlan(RegionInfo hri,
 ServerName source,
 ServerName dest)

Instantiate a plan for a region move, moving the specified region from the specified source server to the specified destination server. Destination server can be instantiated as null and later set with setDestination(ServerName).

Parameters:

hri - region to be moved

source - regionserver region should be moved from

dest - regionserver region should be moved to

Method Details

setDestination

public void setDestination(ServerName dest)

Set the destination server for the plan for this region.

getSource

public ServerName getSource()

Get the source server for the plan for this region.

Returns:

server info for source

getDestination

public ServerName getDestination()

Get the destination server for the plan for this region.

Returns:

server info for destination

getRegionName

public String getRegionName()

Get the encoded region name for the region this plan is for.

Returns:

Encoded region name

getRegionInfo

public RegionInfo getRegionInfo()

compareTo

public int compareTo(RegionPlan other)

Compare the region info.

Specified by:

compareTo in interface Comparable<RegionPlan>

Parameters:

other - region plan you are comparing against

compareTo

private static int compareTo(RegionPlan left,
 RegionPlan right)

compareServerName

private static int compareServerName(ServerName left,
 ServerName right)

hashCode

public int hashCode()

Overrides:

hashCode in class Object

equals

public boolean equals(Object obj)

Overrides:

equals in class Object

toString

public String toString()

Overrides:

toString in class Object