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HBASE-18272 Fix issue about RSGroupBasedLoadBalancer#roundRobinAssignment where BOGUS_SERVER_NAME is involved in two groups (chenxu)

This commit is contained in:
tedyu 2017-06-27 07:03:59 -07:00
parent 69e3234226
commit 6e1907919a
2 changed files with 41 additions and 1 deletions
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6
hbase-rsgroup/src/main/java/org/apache/hadoop/hbase/rsgroup/RSGroupBasedLoadBalancer.java
View File

@ -167,10 +167,16 @@ public class RSGroupBasedLoadBalancer implements RSGroupableBalancer {
regionMap.get(groupKey),
serverMap.get(groupKey));
if(result != null) {
if(result.containsKey(LoadBalancer.BOGUS_SERVER_NAME) &&
assignments.containsKey(LoadBalancer.BOGUS_SERVER_NAME)){
assignments.get(LoadBalancer.BOGUS_SERVER_NAME).addAll(
result.get(LoadBalancer.BOGUS_SERVER_NAME));
} else {
assignments.putAll(result);
}
}
}
}
return assignments;
}

34
hbase-rsgroup/src/test/java/org/apache/hadoop/hbase/master/balancer/TestRSGroupBasedLoadBalancer.java
View File

@ -34,6 +34,7 @@ import org.apache.hadoop.hbase.rsgroup.RSGroupInfo;
import org.apache.hadoop.hbase.rsgroup.RSGroupInfoManager;
import org.apache.hadoop.hbase.master.assignment.AssignmentManager;
import org.apache.hadoop.hbase.master.HMaster;
import org.apache.hadoop.hbase.master.LoadBalancer;
import org.apache.hadoop.hbase.master.MasterServices;
import org.apache.hadoop.hbase.master.RegionPlan;
import org.apache.hadoop.hbase.net.Address;
@ -52,6 +53,8 @@ import java.security.SecureRandom;
import java.util.ArrayList;
import java.util.Collections;
import java.util.HashMap;
import java.util.HashSet;
import java.util.Iterator;
import java.util.List;
import java.util.Map;
import java.util.Set;
@ -244,6 +247,37 @@ public class TestRSGroupBasedLoadBalancer {
assertRetainedAssignment(inputForTest, servers, newAssignment);
}
/**
* Test BOGUS_SERVER_NAME among groups do not overwrite each other
* @throws Exception
*/
@Test
public void testRoundRobinAssignment() throws Exception {
List<ServerName> onlineServers = new ArrayList<ServerName>(servers.size());
onlineServers.addAll(servers);
List<HRegionInfo> regions = randomRegions(25);
int bogusRegion = 0;
for(HRegionInfo region : regions){
String group = tableMap.get(region.getTable());
if("dg3".equals(group) || "dg4".equals(group)){
bogusRegion++;
}
}
Set<Address> offlineServers = new HashSet<Address>();
offlineServers.addAll(groupMap.get("dg3").getServers());
offlineServers.addAll(groupMap.get("dg4").getServers());
for(Iterator<ServerName> it = onlineServers.iterator(); it.hasNext();){
ServerName server = it.next();
Address address = server.getAddress();
if(offlineServers.contains(address)){
it.remove();
}
}
Map<ServerName, List<HRegionInfo>> assignments = loadBalancer
.roundRobinAssignment(regions, onlineServers);
assertEquals(bogusRegion, assignments.get(LoadBalancer.BOGUS_SERVER_NAME).size());
}
/**
* Asserts a valid retained assignment plan.
* <p>