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HBASE-24928 balanceRSGroup should skip generating balance plan for disabled table and splitParent region (#2292) 

Signed-off-by: Viraj Jasani <vjasani@apache.org>
Signed-off-by: Guanghao Zhang <zghao@apache.org>
This commit is contained in:
niuyulin 2020-08-23 22:52:21 -05:00 committed by GitHub
parent c3a58bfe49
commit 2874f00a2f
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GPG Key ID: 4AEE18F83AFDEB23
2 changed files with 39 additions and 8 deletions
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28
hbase-server/src/main/java/org/apache/hadoop/hbase/rsgroup/RSGroupInfoManagerImpl.java
View File

@ -57,6 +57,7 @@ import org.apache.hadoop.hbase.client.Result;
import org.apache.hadoop.hbase.client.ResultScanner;
import org.apache.hadoop.hbase.client.TableDescriptor;
import org.apache.hadoop.hbase.client.TableDescriptorBuilder;
import org.apache.hadoop.hbase.client.TableState;
import org.apache.hadoop.hbase.constraint.ConstraintException;
import org.apache.hadoop.hbase.coprocessor.MultiRowMutationEndpoint;
import org.apache.hadoop.hbase.exceptions.DeserializationException;
@ -1064,17 +1065,31 @@ final class RSGroupInfoManagerImpl implements RSGroupInfoManager {
return rit;
}
private Map<TableName, Map<ServerName, List<RegionInfo>>> getRSGroupAssignmentsByTable(
String groupName) throws IOException {
/**
* This is an EXPENSIVE clone. Cloning though is the safest thing to do. Can't let out original
* since it can change and at least the load balancer wants to iterate this exported list. Load
* balancer should iterate over this list because cloned list will ignore disabled table and split
* parent region cases. This method is invoked by {@link #balanceRSGroup}
* @return A clone of current assignments for this group.
*/
@VisibleForTesting
Map<TableName, Map<ServerName, List<RegionInfo>>> getRSGroupAssignmentsByTable(
TableStateManager tableStateManager, String groupName) throws IOException {
Map<TableName, Map<ServerName, List<RegionInfo>>> result = Maps.newHashMap();
Set<TableName> tablesInGroupCache = new HashSet<>();
for (Map.Entry<RegionInfo, ServerName> entry :
masterServices.getAssignmentManager().getRegionStates()
.getRegionAssignments().entrySet()) {
for (Map.Entry<RegionInfo, ServerName> entry : masterServices.getAssignmentManager()
.getRegionStates().getRegionAssignments().entrySet()) {
RegionInfo region = entry.getKey();
TableName tn = region.getTable();
ServerName server = entry.getValue();
if (isTableInGroup(tn, groupName, tablesInGroupCache)) {
if (tableStateManager
.isTableState(tn, TableState.State.DISABLED, TableState.State.DISABLING)) {
continue;
}
if (region.isSplitParent()) {
continue;
}
result.computeIfAbsent(tn, k -> new HashMap<>())
.computeIfAbsent(server, k -> new ArrayList<>()).add(region);
}
@ -1087,7 +1102,6 @@ final class RSGroupInfoManagerImpl implements RSGroupInfoManager {
}
}
}
return result;
}
@ -1119,7 +1133,7 @@ final class RSGroupInfoManagerImpl implements RSGroupInfoManager {
// We balance per group instead of per table
Map<TableName, Map<ServerName, List<RegionInfo>>> assignmentsByTable =
getRSGroupAssignmentsByTable(groupName);
getRSGroupAssignmentsByTable(masterServices.getTableStateManager(), groupName);
List<RegionPlan> plans = balancer.balanceCluster(assignmentsByTable);
boolean balancerRan = !plans.isEmpty();
if (balancerRan) {

17
hbase-server/src/test/java/org/apache/hadoop/hbase/rsgroup/TestRSGroupsBalance.java
View File

@ -24,6 +24,7 @@ import static org.junit.Assert.assertTrue;
import java.util.List;
import java.util.Map;
import org.apache.hadoop.hbase.HBaseClassTestRule;
import org.apache.hadoop.hbase.HConstants;
import org.apache.hadoop.hbase.NamespaceDescriptor;
import org.apache.hadoop.hbase.ServerName;
import org.apache.hadoop.hbase.TableName;
@ -33,6 +34,7 @@ import org.apache.hadoop.hbase.client.ColumnFamilyDescriptorBuilder;
import org.apache.hadoop.hbase.client.RegionInfo;
import org.apache.hadoop.hbase.client.TableDescriptor;
import org.apache.hadoop.hbase.client.TableDescriptorBuilder;
import org.apache.hadoop.hbase.master.HMaster;
import org.apache.hadoop.hbase.testclassification.MediumTests;
import org.apache.hadoop.hbase.testclassification.RSGroupTests;
import org.apache.hadoop.hbase.util.Bytes;
@ -181,4 +183,19 @@ public class TestRSGroupsBalance extends TestRSGroupsBase {
});
}
@Test public void testGetRSGroupAssignmentsByTable() throws Exception {
final TableName tableName = TableName.valueOf(name.getMethodName());
TEST_UTIL.createMultiRegionTable(tableName, HConstants.CATALOG_FAMILY, 10);
// disable table
final TableName disableTableName = TableName.valueOf("testDisableTable");
TEST_UTIL.createMultiRegionTable(disableTableName, HConstants.CATALOG_FAMILY, 10);
TEST_UTIL.getAdmin().disableTable(disableTableName);
HMaster master = TEST_UTIL.getMiniHBaseCluster().getMaster();
RSGroupInfoManagerImpl gm = (RSGroupInfoManagerImpl) master.getRSGroupInfoManager();
Map<TableName, Map<ServerName, List<RegionInfo>>> assignments =
gm.getRSGroupAssignmentsByTable(master.getTableStateManager(), RSGroupInfo.DEFAULT_GROUP);
assertFalse(assignments.containsKey(disableTableName));
assertTrue(assignments.containsKey(tableName));
}
}