FavoredNodesForRegion (Apache HBase 1.2.12 API)

All Classes

Summary:
Nested |
Field |
Constr |
Method

Detail:
Field |
Constr |
Method

All Known Subinterfaces:

RegionServerServices

All Known Implementing Classes:

HMaster, HMasterCommandLine.LocalHMaster, HRegionServer
```
@InterfaceAudience.LimitedPrivate(value="Coprocesssor")
@InterfaceStability.Evolving
public interface FavoredNodesForRegion
```
Abstraction that allows different modules in RegionServer to update/get the favored nodes information for regions.

Method Summary

Methods
Modifier and Type	Method and Description
`InetSocketAddress[]`	`getFavoredNodesForRegion(String encodedRegionName)` Get the favored nodes mapping for this region.
`void`	`updateRegionFavoredNodesMapping(String encodedRegionName, List<org.apache.hadoop.hbase.protobuf.generated.HBaseProtos.ServerName> favoredNodes)` Used to update the favored nodes mapping when required.

- Method Detail
  - updateRegionFavoredNodesMapping
```
void updateRegionFavoredNodesMapping(String encodedRegionName,
                                   List<org.apache.hadoop.hbase.protobuf.generated.HBaseProtos.ServerName> favoredNodes)
```
    Used to update the favored nodes mapping when required.
    
    Parameters:
    encodedRegionName -
    favoredNodes -
  - getFavoredNodesForRegion
```
InetSocketAddress[] getFavoredNodesForRegion(String encodedRegionName)
```
    Get the favored nodes mapping for this region. Used when the HDFS create API is invoked to pass in favored nodes hints for new region files.
    
    Parameters:
    encodedRegionName -
    
    Returns:
    array containing the favored nodes' InetSocketAddresses

All Classes

Summary:
Nested |
Field |
Constr |
Method

Detail:
Field |
Constr |
Method

Copyright © 2007–2019 The Apache Software Foundation. All rights reserved.