| /* |
| * Licensed to the Apache Software Foundation (ASF) under one |
| * or more contributor license agreements. See the NOTICE file |
| * distributed with this work for additional information |
| * regarding copyright ownership. The ASF licenses this file |
| * to you under the Apache License, Version 2.0 (the |
| * "License"); you may not use this file except in compliance |
| * with the License. You may obtain a copy of the License at |
| * |
| * http://www.apache.org/licenses/LICENSE-2.0 |
| * |
| * Unless required by applicable law or agreed to in writing, software |
| * distributed under the License is distributed on an "AS IS" BASIS, |
| * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. |
| * See the License for the specific language governing permissions and |
| * limitations under the License. |
| */ |
| |
| package org.apache.hadoop.hbase.master.balancer; |
| |
| import java.util.Arrays; |
| 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.ServerName; |
| import org.apache.hadoop.hbase.TableName; |
| import org.apache.hadoop.hbase.client.LogEntry; |
| import org.apache.hadoop.hbase.client.RegionInfo; |
| import org.apache.hadoop.hbase.master.RegionPlan; |
| import org.apache.hadoop.hbase.namequeues.BalancerDecisionDetails; |
| import org.apache.hadoop.hbase.namequeues.request.NamedQueueGetRequest; |
| import org.apache.hadoop.hbase.namequeues.response.NamedQueueGetResponse; |
| import org.apache.hadoop.hbase.testclassification.MasterTests; |
| import org.apache.hadoop.hbase.testclassification.MediumTests; |
| import org.junit.Assert; |
| import org.junit.ClassRule; |
| import org.junit.Test; |
| import org.junit.experimental.categories.Category; |
| |
| import org.apache.hadoop.hbase.shaded.protobuf.ProtobufUtil; |
| import org.apache.hadoop.hbase.shaded.protobuf.generated.MasterProtos; |
| import org.apache.hadoop.hbase.shaded.protobuf.generated.RecentLogs; |
| |
| /** |
| * Test BalancerDecision ring buffer using namedQueue interface |
| */ |
| @Category({ MasterTests.class, MediumTests.class }) |
| public class TestBalancerDecision extends StochasticBalancerTestBase { |
| |
| @ClassRule |
| public static final HBaseClassTestRule CLASS_RULE = |
| HBaseClassTestRule.forClass(TestBalancerDecision.class); |
| |
| @Test |
| public void testBalancerDecisions() { |
| conf.setBoolean("hbase.master.balancer.decision.buffer.enabled", true); |
| loadBalancer.setConf(conf); |
| float minCost = conf.getFloat("hbase.master.balancer.stochastic.minCostNeedBalance", 0.05f); |
| conf.setFloat("hbase.master.balancer.stochastic.minCostNeedBalance", 1.0f); |
| try { |
| // Test with/without per table balancer. |
| boolean[] perTableBalancerConfigs = {true, false}; |
| for (boolean isByTable : perTableBalancerConfigs) { |
| conf.setBoolean(HConstants.HBASE_MASTER_LOADBALANCE_BYTABLE, isByTable); |
| loadBalancer.setConf(conf); |
| for (int[] mockCluster : clusterStateMocks) { |
| Map<ServerName, List<RegionInfo>> servers = mockClusterServers(mockCluster); |
| Map<TableName, Map<ServerName, List<RegionInfo>>> LoadOfAllTable = |
| (Map) mockClusterServersWithTables(servers); |
| List<RegionPlan> plans = loadBalancer.balanceCluster(LoadOfAllTable); |
| boolean emptyPlans = plans == null || plans.isEmpty(); |
| Assert.assertTrue(emptyPlans || needsBalanceIdleRegion(mockCluster)); |
| } |
| } |
| final NamedQueueGetRequest namedQueueGetRequest = new NamedQueueGetRequest(); |
| namedQueueGetRequest.setNamedQueueEvent(BalancerDecisionDetails.BALANCER_DECISION_EVENT); |
| namedQueueGetRequest |
| .setBalancerDecisionsRequest(MasterProtos.BalancerDecisionsRequest.getDefaultInstance()); |
| NamedQueueGetResponse namedQueueGetResponse = |
| loadBalancer.namedQueueRecorder.getNamedQueueRecords(namedQueueGetRequest); |
| List<RecentLogs.BalancerDecision> balancerDecisions = |
| namedQueueGetResponse.getBalancerDecisions(); |
| MasterProtos.BalancerDecisionsResponse response = |
| MasterProtos.BalancerDecisionsResponse.newBuilder() |
| .addAllBalancerDecision(balancerDecisions) |
| .build(); |
| List<LogEntry> balancerDecisionRecords = |
| ProtobufUtil.getBalancerDecisionEntries(response); |
| Assert.assertTrue(balancerDecisionRecords.size() > 160); |
| } finally { |
| // reset config |
| conf.unset(HConstants.HBASE_MASTER_LOADBALANCE_BYTABLE); |
| conf.setFloat("hbase.master.balancer.stochastic.minCostNeedBalance", minCost); |
| loadBalancer.setConf(conf); |
| } |
| } |
| |
| private static boolean needsBalanceIdleRegion(int[] cluster) { |
| return (Arrays.stream(cluster).anyMatch(x -> x > 1)) && (Arrays.stream(cluster) |
| .anyMatch(x -> x < 1)); |
| } |
| |
| } |