| /** |
| * 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.client; |
| |
| import static org.junit.Assert.assertArrayEquals; |
| import static org.junit.Assert.assertEquals; |
| |
| import java.io.IOException; |
| import java.util.Collections; |
| import java.util.List; |
| import org.apache.hadoop.hbase.HBaseTestingUtility; |
| import org.apache.hadoop.hbase.HConstants; |
| import org.apache.hadoop.hbase.HRegionLocation; |
| import org.apache.hadoop.hbase.ServerName; |
| import org.apache.hadoop.hbase.TableName; |
| import org.apache.hadoop.hbase.regionserver.Region; |
| import org.apache.hadoop.hbase.util.Bytes; |
| import org.apache.hadoop.hbase.util.Pair; |
| import org.junit.After; |
| import org.junit.Test; |
| |
| public abstract class AbstractTestRegionLocator { |
| |
| protected static final HBaseTestingUtility UTIL = new HBaseTestingUtility(); |
| |
| protected static TableName TABLE_NAME = TableName.valueOf("Locator"); |
| |
| protected static byte[] FAMILY = Bytes.toBytes("family"); |
| |
| protected static int REGION_REPLICATION = 3; |
| |
| protected static byte[][] SPLIT_KEYS; |
| |
| protected static void startClusterAndCreateTable() throws Exception { |
| UTIL.startMiniCluster(3); |
| HBaseTestingUtility.setReplicas(UTIL.getAdmin(), TableName.META_TABLE_NAME, REGION_REPLICATION); |
| TableDescriptor td = |
| TableDescriptorBuilder.newBuilder(TABLE_NAME).setRegionReplication(REGION_REPLICATION) |
| .setColumnFamily(ColumnFamilyDescriptorBuilder.of(FAMILY)).build(); |
| SPLIT_KEYS = new byte[9][]; |
| for (int i = 0; i < 9; i++) { |
| SPLIT_KEYS[i] = Bytes.toBytes(Integer.toString(i + 1)); |
| } |
| UTIL.getAdmin().createTable(td, SPLIT_KEYS); |
| UTIL.waitTableAvailable(TABLE_NAME); |
| try (ConnectionRegistry registry = |
| ConnectionRegistryFactory.getRegistry(UTIL.getConfiguration())) { |
| RegionReplicaTestHelper.waitUntilAllMetaReplicasAreReady(UTIL, registry); |
| } |
| UTIL.getAdmin().balancerSwitch(false, true); |
| } |
| |
| @After |
| public void tearDownAfterTest() throws IOException { |
| clearCache(TABLE_NAME); |
| clearCache(TableName.META_TABLE_NAME); |
| } |
| |
| private byte[] getStartKey(int index) { |
| return index == 0 ? HConstants.EMPTY_START_ROW : SPLIT_KEYS[index - 1]; |
| } |
| |
| private byte[] getEndKey(int index) { |
| return index == SPLIT_KEYS.length ? HConstants.EMPTY_END_ROW : SPLIT_KEYS[index]; |
| } |
| |
| private void assertStartKeys(byte[][] startKeys) { |
| assertEquals(SPLIT_KEYS.length + 1, startKeys.length); |
| for (int i = 0; i < startKeys.length; i++) { |
| assertArrayEquals(getStartKey(i), startKeys[i]); |
| } |
| } |
| |
| private void assertEndKeys(byte[][] endKeys) { |
| assertEquals(SPLIT_KEYS.length + 1, endKeys.length); |
| for (int i = 0; i < endKeys.length; i++) { |
| assertArrayEquals(getEndKey(i), endKeys[i]); |
| } |
| } |
| |
| @Test |
| public void testStartEndKeys() throws IOException { |
| assertStartKeys(getStartKeys(TABLE_NAME)); |
| assertEndKeys(getEndKeys(TABLE_NAME)); |
| Pair<byte[][], byte[][]> startEndKeys = getStartEndKeys(TABLE_NAME); |
| assertStartKeys(startEndKeys.getFirst()); |
| assertEndKeys(startEndKeys.getSecond()); |
| } |
| |
| private void assertRegionLocation(HRegionLocation loc, int index, int replicaId) { |
| RegionInfo region = loc.getRegion(); |
| byte[] startKey = getStartKey(index); |
| assertArrayEquals(startKey, region.getStartKey()); |
| assertArrayEquals(getEndKey(index), region.getEndKey()); |
| assertEquals(replicaId, region.getReplicaId()); |
| ServerName expected = findRegionLocation(TABLE_NAME, region.getStartKey(), replicaId); |
| assertEquals(expected, loc.getServerName()); |
| } |
| |
| private ServerName findRegionLocation(TableName tableName, byte[] startKey, int replicaId) { |
| return UTIL.getMiniHBaseCluster().getRegionServerThreads().stream() |
| .map(t -> t.getRegionServer()) |
| .filter(rs -> rs.getRegions(tableName).stream().map(Region::getRegionInfo) |
| .anyMatch(r -> r.containsRow(startKey) && r.getReplicaId() == replicaId)) |
| .findFirst().get().getServerName(); |
| } |
| |
| @Test |
| public void testGetRegionLocation() throws IOException { |
| for (int i = 0; i <= SPLIT_KEYS.length; i++) { |
| for (int replicaId = 0; replicaId < REGION_REPLICATION; replicaId++) { |
| assertRegionLocation(getRegionLocation(TABLE_NAME, getStartKey(i), replicaId), i, |
| replicaId); |
| } |
| } |
| } |
| |
| @Test |
| public void testGetRegionLocations() throws IOException { |
| for (int i = 0; i <= SPLIT_KEYS.length; i++) { |
| List<HRegionLocation> locs = getRegionLocations(TABLE_NAME, getStartKey(i)); |
| assertEquals(REGION_REPLICATION, locs.size()); |
| for (int replicaId = 0; replicaId < REGION_REPLICATION; replicaId++) { |
| assertRegionLocation(locs.get(replicaId), i, replicaId); |
| } |
| } |
| } |
| |
| @Test |
| public void testGetAllRegionLocations() throws IOException { |
| List<HRegionLocation> locs = getAllRegionLocations(TABLE_NAME); |
| assertEquals(REGION_REPLICATION * (SPLIT_KEYS.length + 1), locs.size()); |
| Collections.sort(locs, (l1, l2) -> { |
| int c = Bytes.compareTo(l1.getRegion().getStartKey(), l2.getRegion().getStartKey()); |
| if (c != 0) { |
| return c; |
| } |
| return Integer.compare(l1.getRegion().getReplicaId(), l2.getRegion().getReplicaId()); |
| }); |
| for (int i = 0; i <= SPLIT_KEYS.length; i++) { |
| for (int replicaId = 0; replicaId < REGION_REPLICATION; replicaId++) { |
| assertRegionLocation(locs.get(i * REGION_REPLICATION + replicaId), i, replicaId); |
| } |
| } |
| } |
| |
| private void assertMetaStartOrEndKeys(byte[][] keys) { |
| assertEquals(1, keys.length); |
| assertArrayEquals(HConstants.EMPTY_BYTE_ARRAY, keys[0]); |
| } |
| |
| private void assertMetaRegionLocation(HRegionLocation loc, int replicaId) { |
| RegionInfo region = loc.getRegion(); |
| assertArrayEquals(HConstants.EMPTY_START_ROW, region.getStartKey()); |
| assertArrayEquals(HConstants.EMPTY_END_ROW, region.getEndKey()); |
| assertEquals(replicaId, region.getReplicaId()); |
| ServerName expected = |
| findRegionLocation(TableName.META_TABLE_NAME, region.getStartKey(), replicaId); |
| assertEquals(expected, loc.getServerName()); |
| } |
| |
| private void assertMetaRegionLocations(List<HRegionLocation> locs) { |
| assertEquals(REGION_REPLICATION, locs.size()); |
| for (int replicaId = 0; replicaId < REGION_REPLICATION; replicaId++) { |
| assertMetaRegionLocation(locs.get(replicaId), replicaId); |
| } |
| } |
| |
| @Test |
| public void testMeta() throws IOException { |
| assertMetaStartOrEndKeys(getStartKeys(TableName.META_TABLE_NAME)); |
| assertMetaStartOrEndKeys(getEndKeys(TableName.META_TABLE_NAME)); |
| Pair<byte[][], byte[][]> startEndKeys = getStartEndKeys(TableName.META_TABLE_NAME); |
| assertMetaStartOrEndKeys(startEndKeys.getFirst()); |
| assertMetaStartOrEndKeys(startEndKeys.getSecond()); |
| for (int replicaId = 0; replicaId < REGION_REPLICATION; replicaId++) { |
| assertMetaRegionLocation( |
| getRegionLocation(TableName.META_TABLE_NAME, HConstants.EMPTY_START_ROW, replicaId), |
| replicaId); |
| } |
| assertMetaRegionLocations( |
| getRegionLocations(TableName.META_TABLE_NAME, HConstants.EMPTY_START_ROW)); |
| assertMetaRegionLocations(getAllRegionLocations(TableName.META_TABLE_NAME)); |
| } |
| |
| protected abstract byte[][] getStartKeys(TableName tableName) throws IOException; |
| |
| protected abstract byte[][] getEndKeys(TableName tableName) throws IOException; |
| |
| protected abstract Pair<byte[][], byte[][]> getStartEndKeys(TableName tableName) |
| throws IOException; |
| |
| protected abstract HRegionLocation getRegionLocation(TableName tableName, byte[] row, |
| int replicaId) throws IOException; |
| |
| protected abstract List<HRegionLocation> getRegionLocations(TableName tableName, byte[] row) |
| throws IOException; |
| |
| protected abstract List<HRegionLocation> getAllRegionLocations(TableName tableName) |
| throws IOException; |
| |
| protected abstract void clearCache(TableName tableName) throws IOException; |
| } |