org.apache.hadoop.hbase.master.balancer

Class RegionInfoComparator

java.lang.Object

org.apache.hadoop.hbase.master.balancer.RegionInfoComparator

All Implemented Interfaces:

Comparator<RegionInfo>

class RegionInfoComparator
extends Object
implements Comparator<RegionInfo>

The following comparator assumes that RegionId from HRegionInfo can represent the age of the region - larger RegionId means the region is younger. This comparator is used in balanceCluster() to account for the out-of-band regions which were assigned to the server after some other region server crashed.

Constructor Summary

Constructors

Constructor and Description
RegionInfoComparator()

Method Summary

Modifier and Type	Method and Description
int	compare(RegionInfo l, RegionInfo r)

Methods inherited from class java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Methods inherited from interface java.util.Comparator

comparing, comparing, comparingDouble, comparingInt, comparingLong, equals, naturalOrder, nullsFirst, nullsLast, reversed, reverseOrder, thenComparing, thenComparing, thenComparing, thenComparingDouble, thenComparingInt, thenComparingLong

Constructor Detail

RegionInfoComparator

RegionInfoComparator()

Method Detail

compare

public int compare(RegionInfo l,
                   RegionInfo r)

Specified by:

compare in interface Comparator<RegionInfo>