hbase-server/src/test/java/org/apache/hadoop/hbase/master/TestMasterRepairMode.java

   1 /*
   2  * Licensed to the Apache Software Foundation (ASF) under one
   3  * or more contributor license agreements.  See the NOTICE file
   4  * distributed with this work for additional information
   5  * regarding copyright ownership.  The ASF licenses this file
   6  * to you under the Apache License, Version 2.0 (the
   7  * "License"); you may not use this file except in compliance
   8  * with the License.  You may obtain a copy of the License at
   9  *
  10  *     http://www.apache.org/licenses/LICENSE-2.0
  11  *
  12  * Unless required by applicable law or agreed to in writing, software
  13  * distributed under the License is distributed on an "AS IS" BASIS,
  14  * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
  15  * See the License for the specific language governing permissions and
  16  * limitations under the License.
  17  */
  18 package org.apache.hadoop.hbase.master;
  19
  20 import static org.junit.Assert.assertNotNull;
  21 import static org.junit.Assert.assertTrue;
  22 import static org.junit.Assert.fail;
  23 import java.util.Arrays;
  24 import java.util.stream.Stream;
  25 import java.util.stream.StreamSupport;
  26 import org.apache.hadoop.conf.Configuration;
  27 import org.apache.hadoop.hbase.HBaseClassTestRule;
  28 import org.apache.hadoop.hbase.HBaseTestingUtility;
  29 import org.apache.hadoop.hbase.HConstants;
  30 import org.apache.hadoop.hbase.StartMiniClusterOption;
  31 import org.apache.hadoop.hbase.TableName;
  32 import org.apache.hadoop.hbase.client.Connection;
  33 import org.apache.hadoop.hbase.client.Put;
  34 import org.apache.hadoop.hbase.client.Result;
  35 import org.apache.hadoop.hbase.client.ResultScanner;
  36 import org.apache.hadoop.hbase.client.Scan;
  37 import org.apache.hadoop.hbase.client.Table;
  38 import org.apache.hadoop.hbase.testclassification.LargeTests;
  39 import org.apache.hadoop.hbase.testclassification.MasterTests;
  40 import org.apache.hadoop.hbase.util.Bytes;
  41 import org.junit.After;
  42 import org.junit.Before;
  43 import org.junit.ClassRule;
  44 import org.junit.Rule;
  45 import org.junit.Test;
  46 import org.junit.experimental.categories.Category;
  47 import org.junit.rules.TestName;
  48 import org.slf4j.Logger;
  49 import org.slf4j.LoggerFactory;
  50
  51 @Category({MasterTests.class, LargeTests.class})
  52 public class TestMasterRepairMode {
  53
  54   @ClassRule
  55   public static final HBaseClassTestRule CLASS_RULE =
  56       HBaseClassTestRule.forClass(TestMasterRepairMode.class);
  57
  58   @Rule
  59   public TestName name = new TestName();
  60
  61   private static final Logger LOG = LoggerFactory.getLogger(TestMasterRepairMode.class);
  62
  63   private static final byte[] FAMILYNAME = Bytes.toBytes("fam");
  64
  65   private static HBaseTestingUtility TEST_UTIL;
  66
  67   @Before
  68   public void setUp() throws Exception {
  69     TEST_UTIL = new HBaseTestingUtility();
  70   }
  71
  72   @After
  73   public void tearDown() throws Exception {
  74     TEST_UTIL.shutdownMiniCluster();
  75   }
  76
  77   private void enableMaintenanceMode() {
  78     Configuration c = TEST_UTIL.getConfiguration();
  79     c.setBoolean(HMaster.MAINTENANCE_MODE, true);
  80     c.setInt("hbase.master.init.timeout.localHBaseCluster", 30000);
  81   }
  82
  83   @Test
  84   public void testNewCluster() throws Exception {
  85     enableMaintenanceMode();
  86
  87     TEST_UTIL.startMiniCluster(StartMiniClusterOption.builder()
  88         .numRegionServers(0)
  89         .numDataNodes(3)
  90         .build());
  91
  92     Connection conn = TEST_UTIL.getConnection();
  93     assertTrue(conn.getAdmin().isMasterInMaintenanceMode());
  94
  95     try (Table table = conn.getTable(TableName.META_TABLE_NAME);
  96         ResultScanner scanner = table.getScanner(new Scan())) {
  97       assertNotNull("Could not read meta.", scanner.next());
  98     }
  99   }
 100
 101   @Test
 102   public void testExistingCluster() throws Exception {
 103     TableName testRepairMode = TableName.valueOf(name.getMethodName());
 104
 105     TEST_UTIL.startMiniCluster();
 106     Table t = TEST_UTIL.createTable(testRepairMode, FAMILYNAME);
 107     Put p = new Put(Bytes.toBytes("r"));
 108     p.addColumn(FAMILYNAME, Bytes.toBytes("c"), new byte[0]);
 109     t.put(p);
 110
 111     TEST_UTIL.shutdownMiniHBaseCluster();
 112
 113     LOG.info("Starting master-only");
 114
 115     enableMaintenanceMode();
 116     TEST_UTIL.startMiniHBaseCluster(StartMiniClusterOption.builder()
 117         .numRegionServers(0).createRootDir(false).build());
 118
 119     Connection conn = TEST_UTIL.getConnection();
 120     assertTrue(conn.getAdmin().isMasterInMaintenanceMode());
 121
 122     try (Table table = conn.getTable(TableName.META_TABLE_NAME);
 123         ResultScanner scanner = table.getScanner(HConstants.TABLE_FAMILY);
 124         Stream<Result> results = StreamSupport.stream(scanner.spliterator(), false)) {
 125       assertTrue("Did not find user table records while reading hbase:meta",
 126           results.anyMatch(r -> Arrays.equals(r.getRow(), testRepairMode.getName())));
 127     }
 128
 129     try (Table table = conn.getTable(testRepairMode);
 130         ResultScanner scanner = table.getScanner(new Scan())) {
 131       scanner.next();
 132       fail("Should not be able to access user-space tables in repair mode.");
 133     } catch (Exception e) {
 134       // Expected
 135     }
 136   }
 137 }