001/**
002 * Licensed to the Apache Software Foundation (ASF) under one
003 * or more contributor license agreements.  See the NOTICE file
004 * distributed with this work for additional information
005 * regarding copyright ownership.  The ASF licenses this file
006 * to you under the Apache License, Version 2.0 (the
007 * "License"); you may not use this file except in compliance
008 * with the License.  You may obtain a copy of the License at
009 *
010 *     http://www.apache.org/licenses/LICENSE-2.0
011 *
012 * Unless required by applicable law or agreed to in writing, software
013 * distributed under the License is distributed on an "AS IS" BASIS,
014 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
015 * See the License for the specific language governing permissions and
016 * limitations under the License.
017 */
018package org.apache.hadoop.hbase.master.assignment;
019
020import static org.junit.Assert.assertEquals;
021import static org.junit.Assert.assertTrue;
022import java.io.IOException;
023import org.apache.hadoop.conf.Configuration;
024import org.apache.hadoop.hbase.HBaseClassTestRule;
025import org.apache.hadoop.hbase.HBaseTestingUtility;
026import org.apache.hadoop.hbase.StartMiniClusterOption;
027import org.apache.hadoop.hbase.TableName;
028import org.apache.hadoop.hbase.client.Put;
029import org.apache.hadoop.hbase.client.RegionInfo;
030import org.apache.hadoop.hbase.client.Table;
031import org.apache.hadoop.hbase.client.TableDescriptor;
032import org.apache.hadoop.hbase.master.procedure.MasterProcedureEnv;
033import org.apache.hadoop.hbase.master.procedure.MasterProcedureTestingUtility;
034import org.apache.hadoop.hbase.procedure2.ProcedureExecutor;
035import org.apache.hadoop.hbase.procedure2.ProcedureTestingUtility;
036import org.apache.hadoop.hbase.testclassification.MasterTests;
037import org.apache.hadoop.hbase.testclassification.MediumTests;
038import org.apache.hadoop.hbase.util.Bytes;
039import org.apache.hadoop.hbase.util.JVMClusterUtil;
040import org.junit.After;
041import org.junit.AfterClass;
042import org.junit.Before;
043import org.junit.BeforeClass;
044import org.junit.ClassRule;
045import org.junit.Rule;
046import org.junit.Test;
047import org.junit.experimental.categories.Category;
048import org.junit.rules.TestName;
049import org.slf4j.Logger;
050import org.slf4j.LoggerFactory;
051
052@Category({MasterTests.class, MediumTests.class})
053public class TestRegionSplit {
054
055  @ClassRule
056  public static final HBaseClassTestRule CLASS_RULE =
057      HBaseClassTestRule.forClass(TestRegionSplit.class);
058
059  private static final Logger LOG = LoggerFactory.getLogger(TestRegionSplit.class);
060
061  protected static final HBaseTestingUtility UTIL = new HBaseTestingUtility();
062
063  private static String ColumnFamilyName = "cf";
064
065  private static final int startRowNum = 11;
066  private static final int rowCount = 60;
067
068  @Rule
069  public TestName name = new TestName();
070
071  private static void setupConf(Configuration conf) {
072  }
073
074  @BeforeClass
075  public static void setupCluster() throws Exception {
076    setupConf(UTIL.getConfiguration());
077    StartMiniClusterOption option =
078        StartMiniClusterOption.builder().numMasters(1).numRegionServers(3).numDataNodes(3).build();
079    UTIL.startMiniCluster(option);
080  }
081
082  @AfterClass
083  public static void cleanupTest() throws Exception {
084    try {
085      UTIL.shutdownMiniCluster();
086    } catch (Exception e) {
087      LOG.warn("failure shutting down cluster", e);
088    }
089  }
090
091  @Before
092  public void setup() throws Exception {
093    // Turn off the meta scanner so it don't remove parent on us.
094    UTIL.getHBaseCluster().getMaster().setCatalogJanitorEnabled(false);
095    // Disable compaction.
096    for (int i = 0; i < UTIL.getHBaseCluster().getLiveRegionServerThreads().size(); i++) {
097      UTIL.getHBaseCluster().getRegionServer(i).getCompactSplitThread().switchCompaction(false);
098    }
099  }
100
101  @After
102  public void tearDown() throws Exception {
103    for (TableDescriptor htd : UTIL.getAdmin().listTableDescriptors()) {
104      UTIL.deleteTable(htd.getTableName());
105    }
106  }
107
108  @Test
109  public void testSplitTableRegion() throws Exception {
110    final TableName tableName = TableName.valueOf(name.getMethodName());
111    final ProcedureExecutor<MasterProcedureEnv> procExec = getMasterProcedureExecutor();
112
113    RegionInfo[] regions =
114        MasterProcedureTestingUtility.createTable(procExec, tableName, null, ColumnFamilyName);
115    insertData(tableName);
116    int splitRowNum = startRowNum + rowCount / 2;
117    byte[] splitKey = Bytes.toBytes("" + splitRowNum);
118
119    assertTrue("not able to find a splittable region", regions != null);
120    assertTrue("not able to find a splittable region", regions.length == 1);
121
122    // Split region of the table
123    long procId = procExec.submitProcedure(
124        new SplitTableRegionProcedure(procExec.getEnvironment(), regions[0], splitKey));
125    // Wait the completion
126    ProcedureTestingUtility.waitProcedure(procExec, procId);
127    ProcedureTestingUtility.assertProcNotFailed(procExec, procId);
128
129    assertTrue("not able to split table", UTIL.getHBaseCluster().getRegions(tableName).size() == 2);
130
131    //disable table
132    UTIL.getAdmin().disableTable(tableName);
133    Thread.sleep(500);
134
135    //stop master
136    UTIL.getHBaseCluster().stopMaster(0);
137    UTIL.getHBaseCluster().waitOnMaster(0);
138    Thread.sleep(500);
139
140    //restart master
141    JVMClusterUtil.MasterThread t = UTIL.getHBaseCluster().startMaster();
142    Thread.sleep(500);
143
144    UTIL.invalidateConnection();
145    // enable table
146    UTIL.getAdmin().enableTable(tableName);
147    Thread.sleep(500);
148
149    assertEquals("Table region not correct.", 2,
150        UTIL.getHBaseCluster().getRegions(tableName).size());
151  }
152
153  private void insertData(final TableName tableName) throws IOException {
154    Table t = UTIL.getConnection().getTable(tableName);
155    Put p;
156    for (int i = 0; i < rowCount / 2; i++) {
157      p = new Put(Bytes.toBytes("" + (startRowNum + i)));
158      p.addColumn(Bytes.toBytes(ColumnFamilyName), Bytes.toBytes("q1"), Bytes.toBytes(i));
159      t.put(p);
160      p = new Put(Bytes.toBytes("" + (startRowNum + rowCount - i - 1)));
161      p.addColumn(Bytes.toBytes(ColumnFamilyName), Bytes.toBytes("q1"), Bytes.toBytes(i));
162      t.put(p);
163    }
164    UTIL.getAdmin().flush(tableName);
165  }
166
167  private ProcedureExecutor<MasterProcedureEnv> getMasterProcedureExecutor() {
168    return UTIL.getHBaseCluster().getMaster().getMasterProcedureExecutor();
169  }
170}