org.apache.hadoop.hbase.regionserver

Interface FavoredNodesForRegion

All Known Subinterfaces:

RegionServerServices

All Known Implementing Classes:

HMaster, HMasterCommandLine.LocalHMaster, HRegionServer

@InterfaceAudience.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 and 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 Detail

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. nn

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. n * @return array containing the favored nodes' InetSocketAddresses