| /** |
| * 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.regionserver; |
| |
| import static org.junit.Assert.assertEquals; |
| |
| import java.io.IOException; |
| import java.util.Arrays; |
| import java.util.List; |
| import org.apache.hadoop.conf.Configuration; |
| import org.apache.hadoop.hbase.HBaseClassTestRule; |
| import org.apache.hadoop.hbase.HBaseTestingUtility; |
| import org.apache.hadoop.hbase.HConstants; |
| import org.apache.hadoop.hbase.TableName; |
| import org.apache.hadoop.hbase.TableNameTestRule; |
| import org.apache.hadoop.hbase.client.TableDescriptor; |
| import org.apache.hadoop.hbase.client.TableDescriptorBuilder; |
| import org.apache.hadoop.hbase.testclassification.MediumTests; |
| import org.apache.hadoop.hbase.testclassification.RegionServerTests; |
| import org.apache.hadoop.hbase.util.Bytes; |
| import org.apache.hadoop.hbase.util.RegionSplitter; |
| import org.junit.After; |
| import org.junit.AfterClass; |
| 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.runner.RunWith; |
| import org.junit.runners.Parameterized; |
| import org.junit.runners.Parameterized.Parameter; |
| import org.junit.runners.Parameterized.Parameters; |
| |
| @RunWith(Parameterized.class) |
| @Category({ RegionServerTests.class, MediumTests.class }) |
| public class TestRegionReplicasWithModifyTable { |
| |
| @ClassRule |
| public static final HBaseClassTestRule CLASS_RULE = |
| HBaseClassTestRule.forClass(TestRegionReplicasWithModifyTable.class); |
| |
| private static final int NB_SERVERS = 3; |
| |
| private static final HBaseTestingUtility HTU = new HBaseTestingUtility(); |
| private static final byte[] f = HConstants.CATALOG_FAMILY; |
| |
| @Parameter |
| public boolean disableBeforeModifying; |
| |
| @Rule |
| public TableNameTestRule name = new TableNameTestRule(); |
| |
| @Parameters |
| public static List<Object[]> params() { |
| return Arrays.asList(new Object[] { true }, new Object[] { false }); |
| } |
| |
| @BeforeClass |
| public static void before() throws Exception { |
| HTU.startMiniCluster(NB_SERVERS); |
| } |
| |
| private void enableReplicationByModification(boolean withReplica, int initialReplicaCount, |
| int enableReplicaCount, int splitCount) throws IOException, InterruptedException { |
| TableName tableName = name.getTableName(); |
| TableDescriptorBuilder builder = TableDescriptorBuilder.newBuilder(tableName); |
| if (withReplica) { |
| builder.setRegionReplication(initialReplicaCount); |
| } |
| TableDescriptor htd = builder.build(); |
| if (splitCount > 0) { |
| byte[][] splits = getSplits(splitCount); |
| HTU.createTable(htd, new byte[][] { f }, splits, new Configuration(HTU.getConfiguration())); |
| } else { |
| HTU.createTable(htd, new byte[][] { f }, (byte[][]) null, |
| new Configuration(HTU.getConfiguration())); |
| } |
| if (disableBeforeModifying) { |
| HTU.getAdmin().disableTable(tableName); |
| } |
| HBaseTestingUtility.setReplicas(HTU.getAdmin(), tableName, enableReplicaCount); |
| if (disableBeforeModifying) { |
| HTU.getAdmin().enableTable(tableName); |
| } |
| int expectedRegionCount; |
| if (splitCount > 0) { |
| expectedRegionCount = enableReplicaCount * splitCount; |
| } else { |
| expectedRegionCount = enableReplicaCount; |
| } |
| assertTotalRegions(expectedRegionCount); |
| } |
| |
| private static byte[][] getSplits(int numRegions) { |
| RegionSplitter.UniformSplit split = new RegionSplitter.UniformSplit(); |
| split.setFirstRow(Bytes.toBytes(0L)); |
| split.setLastRow(Bytes.toBytes(Long.MAX_VALUE)); |
| return split.split(numRegions); |
| } |
| |
| @AfterClass |
| public static void afterClass() throws Exception { |
| HTU.shutdownMiniCluster(); |
| } |
| |
| @After |
| public void tearDown() throws IOException { |
| TableName tableName = name.getTableName(); |
| HTU.getAdmin().disableTable(tableName); |
| HTU.getAdmin().deleteTable(tableName); |
| } |
| |
| private void assertTotalRegions(int expected) { |
| int actual = HTU.getHBaseCluster().getRegions(name.getTableName()).size(); |
| assertEquals(expected, actual); |
| } |
| |
| @Test |
| public void testRegionReplicasUsingEnableTable() throws Exception { |
| enableReplicationByModification(false, 0, 3, 0); |
| } |
| |
| @Test |
| public void testRegionReplicasUsingEnableTableForMultipleRegions() throws Exception { |
| enableReplicationByModification(false, 0, 3, 10); |
| } |
| |
| @Test |
| public void testRegionReplicasByEnableTableWhenReplicaCountIsIncreased() throws Exception { |
| enableReplicationByModification(true, 2, 3, 0); |
| } |
| |
| @Test |
| public void testRegionReplicasByEnableTableWhenReplicaCountIsDecreased() throws Exception { |
| enableReplicationByModification(true, 3, 2, 0); |
| } |
| |
| @Test |
| public void testRegionReplicasByEnableTableWhenReplicaCountIsDecreasedWithMultipleRegions() |
| throws Exception { |
| enableReplicationByModification(true, 3, 2, 20); |
| } |
| |
| @Test |
| public void testRegionReplicasByEnableTableWhenReplicaCountIsIncreasedWithmultipleRegions() |
| throws Exception { |
| enableReplicationByModification(true, 2, 3, 15); |
| } |
| } |