| /* |
| * 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.util; |
| |
| import org.apache.hadoop.hbase.HBaseClassTestRule; |
| import org.apache.hadoop.hbase.HBaseTestingUtility; |
| import org.apache.hadoop.hbase.MiniHBaseCluster; |
| import org.apache.hadoop.hbase.ServerName; |
| import org.apache.hadoop.hbase.TableName; |
| import org.apache.hadoop.hbase.client.Admin; |
| import org.apache.hadoop.hbase.client.ColumnFamilyDescriptorBuilder; |
| import org.apache.hadoop.hbase.client.Put; |
| import org.apache.hadoop.hbase.client.Table; |
| import org.apache.hadoop.hbase.client.TableDescriptor; |
| import org.apache.hadoop.hbase.client.TableDescriptorBuilder; |
| import org.apache.hadoop.hbase.master.RackManager; |
| import org.apache.hadoop.hbase.regionserver.HRegion; |
| import org.apache.hadoop.hbase.regionserver.HRegionServer; |
| import org.apache.hadoop.hbase.testclassification.LargeTests; |
| import org.apache.hadoop.hbase.testclassification.MiscTests; |
| import org.junit.AfterClass; |
| import org.junit.Assert; |
| import org.junit.Before; |
| import org.junit.BeforeClass; |
| import org.junit.ClassRule; |
| import org.junit.Rule; |
| import org.junit.Test; |
| import org.junit.experimental.categories.Category; |
| import org.junit.rules.TestName; |
| import java.util.ArrayList; |
| import java.util.List; |
| import java.util.stream.Collectors; |
| import java.util.stream.IntStream; |
| |
| |
| @Category({ MiscTests.class, LargeTests.class}) |
| public class TestRegionMover3 { |
| |
| @ClassRule |
| public static final HBaseClassTestRule CLASS_RULE = |
| HBaseClassTestRule.forClass(TestRegionMover3.class); |
| |
| @Rule |
| public TestName name = new TestName(); |
| |
| private static final HBaseTestingUtility TEST_UTIL = new HBaseTestingUtility(); |
| private static ServerName rs0; |
| private static ServerName rs1; |
| private static ServerName rs2; |
| |
| @BeforeClass |
| public static void setUpBeforeClass() throws Exception { |
| TEST_UTIL.startMiniCluster(3); |
| MiniHBaseCluster cluster = TEST_UTIL.getHBaseCluster(); |
| rs0 = cluster.getRegionServer(0).getServerName(); |
| rs1 = cluster.getRegionServer(1).getServerName(); |
| rs2 = cluster.getRegionServer(2).getServerName(); |
| TEST_UTIL.getAdmin().balancerSwitch(false, true); |
| } |
| |
| @AfterClass |
| public static void tearDownAfterClass() throws Exception { |
| TEST_UTIL.shutdownMiniCluster(); |
| } |
| |
| @Before |
| public void setUp() throws Exception { |
| final TableName tableName = TableName.valueOf(name.getMethodName()); |
| TableDescriptor tableDesc = TableDescriptorBuilder.newBuilder(tableName) |
| .setColumnFamily(ColumnFamilyDescriptorBuilder.of("fam1")).build(); |
| int startKey = 0; |
| int endKey = 80000; |
| TEST_UTIL.getAdmin().createTable(tableDesc, Bytes.toBytes(startKey), Bytes.toBytes(endKey), 9); |
| } |
| |
| @Test |
| public void testRegionUnloadWithRack() throws Exception { |
| final TableName tableName = TableName.valueOf(name.getMethodName()); |
| MiniHBaseCluster cluster = TEST_UTIL.getHBaseCluster(); |
| Admin admin = TEST_UTIL.getAdmin(); |
| Table table = TEST_UTIL.getConnection().getTable(tableName); |
| List<Put> puts = IntStream.range(10, 50000) |
| .mapToObj(i -> new Put(Bytes.toBytes(i)) |
| .addColumn(Bytes.toBytes("fam1"), Bytes.toBytes("q1"), Bytes.toBytes("val_" + i))) |
| .collect(Collectors.toList()); |
| table.put(puts); |
| admin.flush(tableName); |
| admin.compact(tableName); |
| Thread.sleep(3000); |
| HRegionServer hRegionServer0 = cluster.getRegionServer(0); |
| HRegionServer hRegionServer1 = cluster.getRegionServer(1); |
| HRegionServer hRegionServer2 = cluster.getRegionServer(2); |
| int numRegions0 = hRegionServer0.getNumberOfOnlineRegions(); |
| int numRegions1 = hRegionServer1.getNumberOfOnlineRegions(); |
| int numRegions2 = hRegionServer2.getNumberOfOnlineRegions(); |
| |
| Assert.assertTrue(numRegions0 >= 3); |
| Assert.assertTrue(numRegions1 >= 3); |
| Assert.assertTrue(numRegions2 >= 3); |
| int totalRegions = numRegions0 + numRegions1 + numRegions2; |
| |
| // source RS: rs0 |
| String sourceRSName = rs0.getAddress().toString(); |
| |
| // move all regions from rs1 to rs0 |
| for (HRegion region : hRegionServer1.getRegions()) { |
| TEST_UTIL.getAdmin().move(region.getRegionInfo().getEncodedNameAsBytes(), rs0); |
| } |
| TEST_UTIL.waitFor(5000, () -> { |
| int newNumRegions0 = hRegionServer0.getNumberOfOnlineRegions(); |
| int newNumRegions1 = hRegionServer1.getNumberOfOnlineRegions(); |
| return newNumRegions1 == 0 && newNumRegions0 == (numRegions0 + numRegions1); |
| }); |
| |
| // regionMover obj on rs0. While unloading regions from rs0 |
| // with default rackManager, which resolves "/default-rack" for each server, no region |
| // is moved while using unloadFromRack() as all rs belong to same rack. |
| RegionMover.RegionMoverBuilder rmBuilder = |
| new RegionMover.RegionMoverBuilder(sourceRSName, TEST_UTIL.getConfiguration()) |
| .ack(true) |
| .maxthreads(8); |
| try (RegionMover regionMover = rmBuilder.build()) { |
| regionMover.unloadFromRack(); |
| int newNumRegions0 = hRegionServer0.getNumberOfOnlineRegions(); |
| int newNumRegions1 = hRegionServer1.getNumberOfOnlineRegions(); |
| int newNumRegions2 = hRegionServer2.getNumberOfOnlineRegions(); |
| Assert.assertEquals(0, newNumRegions1); |
| Assert.assertEquals(totalRegions, newNumRegions0 + newNumRegions2); |
| } |
| |
| // use custom rackManager, which resolves "rack-1" for rs0 and rs1, |
| // while "rack-2" for rs2. Hence, unloadFromRack() from rs0 should move all |
| // regions that belong to rs0 to rs2 only, and nothing should be moved to rs1 |
| // as rs0 and rs1 belong to same rack. |
| rmBuilder.rackManager(new MockRackManager()); |
| try (RegionMover regionMover = rmBuilder.build()) { |
| regionMover.unloadFromRack(); |
| int newNumRegions0 = hRegionServer0.getNumberOfOnlineRegions(); |
| int newNumRegions1 = hRegionServer1.getNumberOfOnlineRegions(); |
| int newNumRegions2 = hRegionServer2.getNumberOfOnlineRegions(); |
| Assert.assertEquals(0, newNumRegions0); |
| Assert.assertEquals(0, newNumRegions1); |
| Assert.assertEquals(totalRegions, newNumRegions2); |
| } |
| |
| } |
| |
| private static class MockRackManager extends RackManager { |
| |
| private static final String RACK_2 = "rack-2"; |
| private static final String RACK_1 = "rack-1"; |
| |
| @Override |
| public String getRack(ServerName server) { |
| return rs2.equals(server) ? RACK_2 : RACK_1; |
| } |
| |
| @Override |
| public List<String> getRack(List<ServerName> servers) { |
| List<String> racks = new ArrayList<>(); |
| servers.forEach(serverName -> { |
| if (rs2.equals(serverName)) { |
| racks.add(RACK_2); |
| } else { |
| racks.add(RACK_1); |
| } |
| }); |
| return racks; |
| } |
| } |
| |
| } |