hbase-server/src/test/java/org/apache/hadoop/hbase/master/TestShutdownWithNoRegionServer.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 org.apache.hadoop.hbase.HBaseClassTestRule;
  21 import org.apache.hadoop.hbase.HBaseTestingUtil;
  22 import org.apache.hadoop.hbase.testclassification.MasterTests;
  23 import org.apache.hadoop.hbase.testclassification.MediumTests;
  24 import org.apache.hadoop.hbase.util.JVMClusterUtil.RegionServerThread;
  25 import org.junit.AfterClass;
  26 import org.junit.BeforeClass;
  27 import org.junit.ClassRule;
  28 import org.junit.Test;
  29 import org.junit.experimental.categories.Category;
  30
  31 /**
  32  * Testcase to confirm that we will not hang when shutdown a cluster with no live region servers.
  33  */
  34 @Category({ MasterTests.class, MediumTests.class })
  35 public class TestShutdownWithNoRegionServer {
  36
  37   @ClassRule
  38   public static final HBaseClassTestRule CLASS_RULE =
  39     HBaseClassTestRule.forClass(TestShutdownWithNoRegionServer.class);
  40
  41   private static final HBaseTestingUtil UTIL = new HBaseTestingUtil();
  42
  43   @BeforeClass
  44   public static void setUp() throws Exception {
  45     UTIL.startMiniCluster(1);
  46   }
  47
  48   @AfterClass
  49   public static void tearDown() throws Exception {
  50     UTIL.shutdownMiniCluster();
  51   }
  52
  53   @Test
  54   public void test() throws InterruptedException {
  55     RegionServerThread t = UTIL.getMiniHBaseCluster().stopRegionServer(0);
  56     t.join();
  57   }
  58 }