hbase-server/src/test/java/org/apache/hadoop/hbase/master/TestMasterNoCluster.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.apache.hadoop.hbase.HConstants.ZOOKEEPER_QUORUM;
  21
  22 import java.io.IOException;
  23 import org.apache.hadoop.conf.Configuration;
  24 import org.apache.hadoop.hbase.Abortable;
  25 import org.apache.hadoop.hbase.HBaseClassTestRule;
  26 import org.apache.hadoop.hbase.HBaseTestingUtil;
  27 import org.apache.hadoop.hbase.HConstants;
  28 import org.apache.hadoop.hbase.Waiter;
  29 import org.apache.hadoop.hbase.ZooKeeperConnectionException;
  30 import org.apache.hadoop.hbase.testclassification.MasterTests;
  31 import org.apache.hadoop.hbase.testclassification.MediumTests;
  32 import org.apache.hadoop.hbase.util.CommonFSUtils;
  33 import org.apache.hadoop.hbase.util.Threads;
  34 import org.apache.hadoop.hbase.zookeeper.ZKUtil;
  35 import org.apache.hadoop.hbase.zookeeper.ZKWatcher;
  36 import org.apache.hadoop.metrics2.lib.DefaultMetricsSystem;
  37 import org.apache.zookeeper.KeeperException;
  38 import org.junit.After;
  39 import org.junit.AfterClass;
  40 import org.junit.Assert;
  41 import org.junit.BeforeClass;
  42 import org.junit.ClassRule;
  43 import org.junit.Rule;
  44 import org.junit.Test;
  45 import org.junit.experimental.categories.Category;
  46 import org.junit.rules.TestName;
  47 import org.slf4j.Logger;
  48 import org.slf4j.LoggerFactory;
  49
  50 /**
  51  * Standup the master and fake it to test various aspects of master function.
  52  * Does NOT spin up a mini hbase nor mini dfs cluster testing master (it does
  53  * put up a zk cluster but this is usually pretty fast compared).  Also, should
  54  * be possible to inject faults at points difficult to get at in cluster context.
  55  * TODO: Speed up the zk connection by Master.  It pauses 5 seconds establishing
  56  * session.
  57  */
  58 @Category({MasterTests.class, MediumTests.class})
  59 public class TestMasterNoCluster {
  60
  61   @ClassRule
  62   public static final HBaseClassTestRule CLASS_RULE =
  63       HBaseClassTestRule.forClass(TestMasterNoCluster.class);
  64
  65   private static final Logger LOG = LoggerFactory.getLogger(TestMasterNoCluster.class);
  66
  67   private static final HBaseTestingUtil TESTUTIL = new HBaseTestingUtil();
  68
  69   @Rule
  70   public TestName name = new TestName();
  71
  72   @BeforeClass
  73   public static void setUpBeforeClass() throws Exception {
  74     Configuration c = TESTUTIL.getConfiguration();
  75     // We use local filesystem.  Set it so it writes into the testdir.
  76     CommonFSUtils.setRootDir(c, TESTUTIL.getDataTestDir());
  77     DefaultMetricsSystem.setMiniClusterMode(true);
  78     // Startup a mini zk cluster.
  79     TESTUTIL.startMiniZKCluster();
  80   }
  81
  82   @AfterClass
  83   public static void tearDownAfterClass() throws Exception {
  84     TESTUTIL.shutdownMiniZKCluster();
  85   }
  86
  87   @After
  88   public void tearDown()
  89   throws KeeperException, ZooKeeperConnectionException, IOException {
  90     // Make sure zk is clean before we run the next test.
  91     ZKWatcher zkw = new ZKWatcher(TESTUTIL.getConfiguration(),
  92         "@Before", new Abortable() {
  93       @Override
  94       public void abort(String why, Throwable e) {
  95         throw new RuntimeException(why, e);
  96       }
  97
  98       @Override
  99       public boolean isAborted() {
 100         return false;
 101       }
 102     });
 103     // Before fails sometimes so retry.
 104     try {
 105       TESTUTIL.waitFor(10000, (Waiter.Predicate<Exception>) () -> {
 106         try {
 107           ZKUtil.deleteNodeRecursively(zkw, zkw.getZNodePaths().baseZNode);
 108           return true;
 109         } catch (KeeperException.NotEmptyException e) {
 110           LOG.info("Failed delete, retrying", e);
 111         }
 112         return false;
 113       });
 114     } catch (Exception e) {
 115       LOG.info("Failed zk clear", e);
 116     }
 117     zkw.close();
 118   }
 119
 120   /**
 121    * Test starting master then stopping it before its fully up.
 122    */
 123   @Test
 124   public void testStopDuringStart() throws IOException, KeeperException, InterruptedException {
 125     HMaster master = new HMaster(TESTUTIL.getConfiguration());
 126     master.start();
 127     // Immediately have it stop. We used hang in assigning meta.
 128     master.stopMaster();
 129     master.join();
 130   }
 131
 132   @Test
 133   public void testMasterInitWithSameClientServerZKQuorum() throws Exception {
 134     Configuration conf = new Configuration(TESTUTIL.getConfiguration());
 135     conf.set(HConstants.CLIENT_ZOOKEEPER_QUORUM, conf.get(ZOOKEEPER_QUORUM));
 136     conf.setInt(HConstants.CLIENT_ZOOKEEPER_CLIENT_PORT, TESTUTIL.getZkCluster().getClientPort());
 137     HMaster master = new HMaster(conf);
 138     master.start();
 139     // the master will abort due to IllegalArgumentException so we should finish within 60 seconds
 140     master.join();
 141   }
 142
 143   @Test
 144   public void testMasterInitWithObserverModeClientZKQuorum() throws Exception {
 145     Configuration conf = new Configuration(TESTUTIL.getConfiguration());
 146     Assert.assertFalse(Boolean.getBoolean(HConstants.CLIENT_ZOOKEEPER_OBSERVER_MODE));
 147     // set client ZK to some non-existing address and make sure server won't access client ZK
 148     // (server start should not be affected)
 149     conf.set(HConstants.CLIENT_ZOOKEEPER_QUORUM, HConstants.LOCALHOST);
 150     conf.setInt(HConstants.CLIENT_ZOOKEEPER_CLIENT_PORT,
 151       TESTUTIL.getZkCluster().getClientPort() + 1);
 152     // need to enable maintenance mode so we will start master and an in process region server
 153     conf.setBoolean(HMaster.MAINTENANCE_MODE, true);
 154     // settings to allow us not to start additional RS
 155     conf.setInt(ServerManager.WAIT_ON_REGIONSERVERS_MINTOSTART, 1);
 156     // main setting for this test case
 157     conf.setBoolean(HConstants.CLIENT_ZOOKEEPER_OBSERVER_MODE, true);
 158     HMaster master = new HMaster(conf);
 159     master.start();
 160     while (!master.isInitialized()) {
 161       Threads.sleep(200);
 162     }
 163     Assert.assertNull(master.getMetaLocationSyncer());
 164     Assert.assertNull(master.masterAddressSyncer);
 165     master.stopMaster();
 166     master.join();
 167   }
 168 }