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HBASE-26327 Replicas cohosted on a rack shouldn't keep triggering Bal… (#3729) 

Signed-off-by: Huaxiang Sun <huaxiangsun@apache.org>
This commit is contained in:
clarax 2021-10-25 11:29:31 -07:00 committed by GitHub
parent ffb20ca20c
commit 7af5277859
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2 changed files with 3 additions and 10 deletions
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9
hbase-balancer/src/main/java/org/apache/hadoop/hbase/master/balancer/StochasticLoadBalancer.java
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@ -311,14 +311,7 @@ public class StochasticLoadBalancer extends BaseLoadBalancer {
private boolean areSomeRegionReplicasColocated(BalancerClusterState c) { private boolean areSomeRegionReplicasColocated(BalancerClusterState c) {
regionReplicaHostCostFunction.prepare(c); regionReplicaHostCostFunction.prepare(c);
if (Math.abs(regionReplicaHostCostFunction.cost()) > CostFunction.COST_EPSILON) { return (Math.abs(regionReplicaHostCostFunction.cost()) > CostFunction.COST_EPSILON);
return true;
}
regionReplicaRackCostFunction.prepare(c);
if (Math.abs(regionReplicaRackCostFunction.cost()) > CostFunction.COST_EPSILON) {
return true;
}
return false;
} }
private String getBalanceReason(double total, double sumMultiplier) { private String getBalanceReason(double total, double sumMultiplier) {

4
hbase-balancer/src/test/java/org/apache/hadoop/hbase/master/balancer/TestStochasticLoadBalancerRegionReplica.java
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@ -18,6 +18,7 @@
package org.apache.hadoop.hbase.master.balancer; package org.apache.hadoop.hbase.master.balancer;
import static org.junit.Assert.assertEquals; import static org.junit.Assert.assertEquals;
import static org.junit.Assert.assertFalse;
import static org.junit.Assert.assertTrue; import static org.junit.Assert.assertTrue;
import java.util.ArrayList; import java.util.ArrayList;
@ -161,8 +162,7 @@ public class TestStochasticLoadBalancerRegionReplica extends StochasticBalancerT
map.put(s2, regionsOnS2); map.put(s2, regionsOnS2);
// add another server so that the cluster has some host on another rack // add another server so that the cluster has some host on another rack
map.put(ServerName.valueOf("host2", 1000, 11111), randomRegions(1)); map.put(ServerName.valueOf("host2", 1000, 11111), randomRegions(1));
assertTrue( assertFalse(loadBalancer.needsBalance(HConstants.ENSEMBLE_TABLE_NAME,
loadBalancer.needsBalance(HConstants.ENSEMBLE_TABLE_NAME,
new BalancerClusterState(map, null, null, new ForTestRackManagerOne()))); new BalancerClusterState(map, null, null, new ForTestRackManagerOne())));
} }