FavoredNodesForRegion (Apache HBase 4.0.0-alpha-1-SNAPSHOT API)

All Known Subinterfaces:: RegionServerServices

All Known Implementing Classes:: HRegionServer, MiniHBaseCluster.MiniHBaseClusterRegionServer, MockRegionServerServices

@Private public interface FavoredNodesForRegion

Abstraction that allows different modules in RegionServer to update/get the favored nodes information for regions.

Method Summary

Modifier and Type

Method

Description

InetSocketAddress[]

getFavoredNodesForRegion(String encodedRegionName)

Get the favored nodes mapping for this region.

void

updateRegionFavoredNodesMapping(String encodedRegionName, List<org.apache.hadoop.hbase.shaded.protobuf.generated.HBaseProtos.ServerName> favoredNodes)

Used to update the favored nodes mapping when required.

Method Details
- updateRegionFavoredNodesMapping
  
  void updateRegionFavoredNodesMapping(String encodedRegionName, List<org.apache.hadoop.hbase.shaded.protobuf.generated.HBaseProtos.ServerName> favoredNodes)
  
  Used to update the favored nodes mapping when required.
- 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.
  
  Returns:
  
  array containing the favored nodes' InetSocketAddresses