hbase-server/src/test/java/org/apache/hadoop/hbase/client/TestCleanupMetaReplicaThroughConfig.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.client;
  19
  20 import static org.junit.Assert.assertEquals;
  21
  22 import java.util.List;
  23 import org.apache.hadoop.hbase.HBaseClassTestRule;
  24 import org.apache.hadoop.hbase.HConstants;
  25 import org.apache.hadoop.hbase.master.HMaster;
  26 import org.apache.hadoop.hbase.testclassification.MediumTests;
  27 import org.apache.hadoop.hbase.testclassification.MiscTests;
  28 import org.apache.hadoop.hbase.util.JVMClusterUtil;
  29 import org.apache.hadoop.hbase.zookeeper.ZKWatcher;
  30 import org.junit.BeforeClass;
  31 import org.junit.ClassRule;
  32 import org.junit.Test;
  33 import org.junit.experimental.categories.Category;
  34
  35 /**
  36  * Make sure we will honor the {@link HConstants#META_REPLICAS_NUM}.
  37  */
  38 @Category({ MiscTests.class, MediumTests.class })
  39 public class TestCleanupMetaReplicaThroughConfig extends MetaWithReplicasTestBase {
  40
  41   @ClassRule
  42   public static final HBaseClassTestRule CLASS_RULE =
  43     HBaseClassTestRule.forClass(TestCleanupMetaReplicaThroughConfig.class);
  44
  45   @BeforeClass
  46   public static void setUp() throws Exception {
  47     startCluster();
  48   }
  49
  50   @Test
  51   public void testReplicaCleanup() throws Exception {
  52     ZKWatcher zkw = TEST_UTIL.getZooKeeperWatcher();
  53     List<String> metaReplicaZnodes = zkw.getMetaReplicaNodes();
  54     assertEquals(3, metaReplicaZnodes.size());
  55
  56     final HMaster master = TEST_UTIL.getMiniHBaseCluster().getMaster();
  57     master.stop("Restarting");
  58     TEST_UTIL.waitFor(30000, () -> master.isStopped());
  59     TEST_UTIL.getMiniHBaseCluster().getConfiguration().setInt(HConstants.META_REPLICAS_NUM, 1);
  60
  61     JVMClusterUtil.MasterThread newMasterThread = TEST_UTIL.getMiniHBaseCluster().startMaster();
  62     final HMaster newMaster = newMasterThread.getMaster();
  63
  64     // wait until new master finished meta replica assignment logic
  65     TEST_UTIL.waitFor(30000, () -> newMaster.getMasterQuotaManager() != null);
  66     TEST_UTIL.waitFor(30000,
  67       () -> TEST_UTIL.getZooKeeperWatcher().getMetaReplicaNodes().size() == 1);
  68   }
  69 }