SnapshotOfRegionAssignmentFromMeta (Apache HBase 1.4.11 API)

java.lang.Object
- org.apache.hadoop.hbase.master.SnapshotOfRegionAssignmentFromMeta

```
@InterfaceAudience.Private
public class SnapshotOfRegionAssignmentFromMeta
extends Object
```
Used internally for reading meta and constructing datastructures that are then queried, for things like regions to regionservers, table to regions, etc. It also records the favored nodes mapping for regions.

Constructor Summary

Constructors
Constructor and Description
`SnapshotOfRegionAssignmentFromMeta(Connection connection)`
`SnapshotOfRegionAssignmentFromMeta(Connection connection, Set<TableName> disabledTables, boolean excludeOfflinedSplitParents)`

Method Summary

Methods
Modifier and Type	Method and Description
`FavoredNodesPlan`	`getExistingAssignmentPlan()` Get the favored nodes plan
`Map<String,HRegionInfo>`	`getRegionNameToRegionInfoMap()` Get the regioninfo for a region
`Map<ServerName,List<HRegionInfo>>`	`getRegionServerToRegionMap()` Get regionserver to region map
`Map<HRegionInfo,ServerName>`	`getRegionToRegionServerMap()` Get region to region server map
`Set<TableName>`	`getTableSet()` Get the table set
`Map<TableName,List<HRegionInfo>>`	`getTableToRegionMap()` Get regions for tables
`void`	`initialize()` Initialize the region assignment snapshot by scanning the hbase:meta table

Methods inherited from class java.lang.Object
clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Constructor Detail

SnapshotOfRegionAssignmentFromMeta

public SnapshotOfRegionAssignmentFromMeta(Connection connection)

SnapshotOfRegionAssignmentFromMeta

public SnapshotOfRegionAssignmentFromMeta(Connection connection,
                                  Set<TableName> disabledTables,
                                  boolean excludeOfflinedSplitParents)

Method Detail
- initialize
```
public void initialize()
                throws IOException
```
  Initialize the region assignment snapshot by scanning the hbase:meta table
  
  Throws:
  
  IOException
- getRegionNameToRegionInfoMap
```
public Map<String,HRegionInfo> getRegionNameToRegionInfoMap()
```
  Get the regioninfo for a region
  
  Returns:
  the regioninfo
- getTableToRegionMap
```
public Map<TableName,List<HRegionInfo>> getTableToRegionMap()
```
  Get regions for tables
  
  Returns:
  a mapping from table to regions
- getRegionToRegionServerMap
```
public Map<HRegionInfo,ServerName> getRegionToRegionServerMap()
```
  Get region to region server map
  
  Returns:
  region to region server map
- getRegionServerToRegionMap
```
public Map<ServerName,List<HRegionInfo>> getRegionServerToRegionMap()
```
  Get regionserver to region map
  
  Returns:
  regionserver to region map
- getExistingAssignmentPlan
```
public FavoredNodesPlan getExistingAssignmentPlan()
```
  Get the favored nodes plan
  
  Returns:
  the existing favored nodes plan
- getTableSet
```
public Set<TableName> getTableSet()
```
  Get the table set
  
  Returns:
  the table set

Class SnapshotOfRegionAssignmentFromMeta

Constructor Summary

Method Summary

Methods inherited from class java.lang.Object

Constructor Detail

SnapshotOfRegionAssignmentFromMeta

SnapshotOfRegionAssignmentFromMeta

Method Detail

initialize

getRegionNameToRegionInfoMap

getTableToRegionMap

getRegionToRegionServerMap

getRegionServerToRegionMap

getExistingAssignmentPlan

getTableSet