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;
019
020import static org.junit.Assert.assertFalse;
021import static org.junit.Assert.assertNull;
022
023import org.apache.hadoop.conf.Configuration;
024import org.apache.hadoop.hbase.HBaseClassTestRule;
025import org.apache.hadoop.hbase.HBaseTestingUtility;
026import org.apache.hadoop.hbase.regionserver.ChunkCreator;
027import org.apache.hadoop.hbase.testclassification.MasterTests;
028import org.apache.hadoop.hbase.testclassification.MediumTests;
029import org.apache.hadoop.hbase.util.FSUtils;
030import org.junit.AfterClass;
031import org.junit.BeforeClass;
032import org.junit.ClassRule;
033import org.junit.Test;
034import org.junit.experimental.categories.Category;
035import org.slf4j.Logger;
036import org.slf4j.LoggerFactory;
037
038@Category({MasterTests.class, MediumTests.class})
039public class TestMasterNotCarryTable {
040
041  @ClassRule
042  public static final HBaseClassTestRule CLASS_RULE =
043      HBaseClassTestRule.forClass(TestMasterNotCarryTable.class);
044
045  private static final Logger LOG = LoggerFactory.getLogger(TestMasterNotCarryTable.class);
046
047  private static final HBaseTestingUtility UTIL = new HBaseTestingUtility();
048
049  private static HMaster master;
050
051  @BeforeClass
052  public static void setUp() throws Exception {
053    Configuration c = UTIL.getConfiguration();
054    // We use local filesystem.  Set it so it writes into the testdir.
055    FSUtils.setRootDir(c, UTIL.getDataTestDir());
056    UTIL.startMiniZKCluster();
057    master = new HMaster(UTIL.getConfiguration());
058    master.start();
059    // As no regionservers, only wait master to create AssignmentManager.
060    while (master.getAssignmentManager() != null) {
061      LOG.debug("Wait master to create AssignmentManager");
062      Thread.sleep(1000);
063    }
064  }
065
066  @AfterClass
067  public static void tearDown() throws Exception {
068    master.stop("Shutdown");
069    UTIL.shutdownMiniZKCluster();
070  }
071
072  @Test
073  public void testMasterNotCarryTable() {
074    // The default config is false
075    assertFalse(LoadBalancer.isTablesOnMaster(UTIL.getConfiguration()));
076    assertFalse(LoadBalancer.isSystemTablesOnlyOnMaster(UTIL.getConfiguration()));
077  }
078
079  @Test
080  public void testMasterBlockCache() {
081    // no need to instantiate block cache.
082    assertNull(master.getCacheConfig().getBlockCache());
083  }
084
085  @Test
086  public void testMasterMemStoreLAB() {
087    // no need to instantiate MemStoreLAB.
088    assertNull(ChunkCreator.getInstance());
089  }
090}