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[fix](replica num) Fix the decrease in the number of replicas and une… (
#48704) …ven distribution of replicas among bes
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fe/fe-core/src/test/java/org/apache/doris/clone/DecreaseReplicationNumTest.java
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| // 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. | ||
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| package org.apache.doris.clone; | ||
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| import org.apache.doris.alter.Alter; | ||
| import org.apache.doris.catalog.Database; | ||
| import org.apache.doris.catalog.Env; | ||
| import org.apache.doris.catalog.OlapTable; | ||
| import org.apache.doris.catalog.Partition; | ||
| import org.apache.doris.catalog.Table; | ||
| import org.apache.doris.common.Config; | ||
| import org.apache.doris.common.util.DebugPointUtil; | ||
| import org.apache.doris.resource.Tag; | ||
| import org.apache.doris.system.Backend; | ||
| import org.apache.doris.utframe.TestWithFeService; | ||
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| import com.google.common.collect.Lists; | ||
| import org.junit.jupiter.api.Assertions; | ||
| import org.junit.jupiter.api.Test; | ||
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| import java.util.ArrayList; | ||
| import java.util.Collections; | ||
| import java.util.HashSet; | ||
| import java.util.List; | ||
| import java.util.Map; | ||
| import java.util.Set; | ||
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| public class DecreaseReplicationNumTest extends TestWithFeService { | ||
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| private Database db; | ||
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| @Override | ||
| protected void beforeCreatingConnectContext() throws Exception { | ||
| Config.enable_debug_points = true; | ||
| Config.disable_balance = true; | ||
| Config.drop_backend_after_decommission = false; | ||
| Config.tablet_schedule_interval_ms = 1000L; | ||
| Config.tablet_checker_interval_ms = 1000L; | ||
| } | ||
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| @Override | ||
| protected int backendNum() { | ||
| return 5; | ||
| } | ||
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| @Override | ||
| protected void runBeforeAll() throws Exception { | ||
| Thread.sleep(1000); | ||
| createDatabase("test"); | ||
| useDatabase("test"); | ||
| db = Env.getCurrentInternalCatalog().getDbOrMetaException("test"); | ||
| } | ||
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| @Override | ||
| protected void runBeforeEach() throws Exception { | ||
| // set back to default value | ||
| Config.max_scheduling_tablets = 2000; | ||
| for (Table table : db.getTables()) { | ||
| dropTable(table.getName(), true); | ||
| } | ||
| Env.getCurrentEnv().getTabletScheduler().clear(); | ||
| DebugPointUtil.clearDebugPoints(); | ||
| Assertions.assertTrue(checkBEHeartbeat(Env.getCurrentSystemInfo().getBackendsByTag(Tag.DEFAULT_BACKEND_TAG))); | ||
| } | ||
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| @Test | ||
| public void testDecreaseReplicaNum() throws Exception { | ||
| createTable("CREATE TABLE tbl1 (k INT) DISTRIBUTED BY HASH(k) BUCKETS 10" | ||
| + " PROPERTIES ('replication_num' = '5')"); | ||
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| OlapTable table = (OlapTable) db.getTableOrMetaException("tbl1"); | ||
| Partition partition = table.getPartitions().iterator().next(); | ||
| Map<Long, Long> beIdToTabletNum = Alter.getReplicaCountByBackend(partition); | ||
| Assertions.assertEquals(5, beIdToTabletNum.size()); | ||
| Assertions.assertEquals(Lists.newArrayList(10L, 10L, 10L, 10L, 10L), new ArrayList<>(beIdToTabletNum.values())); | ||
| beIdToTabletNum.forEach((key, value) -> Assertions.assertEquals(value, 10L)); | ||
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| List<Backend> backends = Env.getCurrentSystemInfo().getBackendsByTag(Tag.DEFAULT_BACKEND_TAG); | ||
| Assertions.assertEquals(backendNum(), backends.size()); | ||
| Backend highLoadBe = backends.get(0); | ||
| DebugPointUtil.addDebugPointWithValue("FE.HIGH_LOAD_BE_ID", highLoadBe.getId()); | ||
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| alterTableSync("ALTER TABLE tbl1 MODIFY PARTITION(*) SET ('replication_num' = '3')"); | ||
| boolean succ = false; | ||
| for (int i = 0; i < 100; i++) { | ||
| beIdToTabletNum = Alter.getReplicaCountByBackend(partition); | ||
| Set<Long> afterAlter = new HashSet<>(beIdToTabletNum.values()); | ||
| // wait for scheduler | ||
| if (afterAlter.size() == 1 && !beIdToTabletNum.containsValue(10L)) { | ||
| Assertions.assertTrue(afterAlter.contains(6L)); | ||
| Assertions.assertEquals(Lists.newArrayList(6L, 6L, 6L, 6L, 6L), new ArrayList<>(beIdToTabletNum.values())); | ||
| succ = true; | ||
| break; | ||
| } | ||
| Thread.sleep(1000); | ||
| } | ||
| Assertions.assertTrue(succ); | ||
| } | ||
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| @Test | ||
| public void testDecreaseMultiPartitionReplicaNum() throws Exception { | ||
| createTable("create table test_multi(id int, part int) " | ||
| + "partition by range(part) (" | ||
| + " partition p1 values[('1'), ('2'))," | ||
| + " partition p2 values[('2'), ('3'))," | ||
| + " partition p3 values[('3'), ('4'))" | ||
| + ") " | ||
| + "distributed by hash(id) BUCKETS 9 " | ||
| + "properties ('replication_num'='4')"); | ||
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| OlapTable table = (OlapTable) db.getTableOrMetaException("test_multi"); | ||
| List<Partition> partitions = table.getAllPartitions(); | ||
| partitions.forEach(p -> { | ||
| Map<Long, Long> beIdToTabletNum = Alter.getReplicaCountByBackend(p); | ||
| Assertions.assertEquals(5, beIdToTabletNum.size()); | ||
| List<Long> sortedValues = new ArrayList<>(beIdToTabletNum.values()); | ||
| sortedValues.sort(Collections.reverseOrder()); | ||
| Assertions.assertEquals(Lists.newArrayList(8L, 7L, 7L, 7L, 7L), sortedValues); | ||
| }); | ||
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| List<Backend> backends = Env.getCurrentSystemInfo().getBackendsByTag(Tag.DEFAULT_BACKEND_TAG); | ||
| Assertions.assertEquals(backendNum(), backends.size()); | ||
| Backend highLoadBe = backends.get(0); | ||
| DebugPointUtil.addDebugPointWithValue("FE.HIGH_LOAD_BE_ID", highLoadBe.getId()); | ||
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| alterTableSync("ALTER TABLE test_multi MODIFY PARTITION(*) SET ('replication_num' = '2')"); | ||
| partitions.forEach(p -> { | ||
| boolean succ = false; | ||
| for (int i = 0; i < 100; i++) { | ||
| Map<Long, Long> beIdToTabletNum = Alter.getReplicaCountByBackend(p); | ||
| Set<Long> afterAlter = new HashSet<>(beIdToTabletNum.values()); | ||
| List<Long> sortedValues = new ArrayList<>(beIdToTabletNum.values()); | ||
| sortedValues.sort(Collections.reverseOrder()); | ||
| // wait for scheduler | ||
| if (afterAlter.size() == 2 && beIdToTabletNum.containsValue(4L) && beIdToTabletNum.containsValue(3L)) { | ||
| Assertions.assertEquals(Lists.newArrayList(4L, 4L, 4L, 3L, 3L), sortedValues); | ||
| succ = true; | ||
| break; | ||
| } | ||
| try { | ||
| Thread.sleep(1000); | ||
| } catch (InterruptedException ignored) { | ||
| System.out.println(ignored); | ||
| } | ||
| } | ||
| Assertions.assertTrue(succ); | ||
| }); | ||
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| } | ||
| } |