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.client;
019
020import static org.junit.jupiter.api.Assertions.assertNotNull;
021import static org.junit.jupiter.api.Assertions.assertTrue;
022
023import java.io.IOException;
024import java.net.Socket;
025import java.util.function.Supplier;
026import org.apache.hadoop.hbase.HBaseParameterizedTestTemplate;
027import org.apache.hadoop.hbase.HConstants;
028import org.apache.hadoop.hbase.ServerName;
029import org.apache.hadoop.hbase.SingleProcessHBaseCluster;
030import org.apache.hadoop.hbase.testclassification.ClientTests;
031import org.apache.hadoop.hbase.testclassification.MediumTests;
032import org.apache.hadoop.hbase.util.FutureUtils;
033import org.apache.hadoop.hbase.util.JVMClusterUtil.MasterThread;
034import org.junit.jupiter.api.AfterAll;
035import org.junit.jupiter.api.AfterEach;
036import org.junit.jupiter.api.BeforeAll;
037import org.junit.jupiter.api.BeforeEach;
038import org.junit.jupiter.api.Tag;
039import org.junit.jupiter.api.TestTemplate;
040
041/**
042 * Testcase for HBASE-29214
043 */
044@Tag(ClientTests.TAG)
045@Tag(MediumTests.TAG)
046@HBaseParameterizedTestTemplate(name = "{index}: policy = {0}")
047public class TestAsyncAdminClearMasterStubCache extends TestAsyncAdminBase {
048
049  public TestAsyncAdminClearMasterStubCache(Supplier<AsyncAdmin> admin) {
050    super(admin);
051  }
052
053  @BeforeAll
054  public static void setUpBeforeClass() throws Exception {
055    TestAsyncAdminBase.setUpBeforeClass();
056  }
057
058  @AfterAll
059  public static void tearDownAfterClass() throws Exception {
060    TestAsyncAdminBase.tearDownAfterClass();
061  }
062
063  @BeforeEach
064  public void waitMasterReady() throws Exception {
065    assertTrue(TEST_UTIL.getHBaseCluster().waitForActiveAndReadyMaster(30000));
066  }
067
068  @AfterEach
069  public void clearPortConfig() {
070    TEST_UTIL.getHBaseCluster().getConf().setInt(HConstants.MASTER_PORT, 0);
071  }
072
073  @TestTemplate
074  public void testClearMasterStubCache() throws Exception {
075    // cache master stub
076    assertNotNull(FutureUtils.get(admin.getClusterMetrics()));
077    // stop the active master
078    SingleProcessHBaseCluster cluster = TEST_UTIL.getHBaseCluster();
079    MasterThread mt = cluster.getMasterThread();
080    ServerName sn = mt.getMaster().getServerName();
081    mt.getMaster().abort("for testing");
082    mt.join();
083    // wait for new active master
084    assertTrue(TEST_UTIL.getHBaseCluster().waitForActiveAndReadyMaster(30000));
085    // restart master on the same port, this is important for getting a RemoteException
086    cluster.getConf().setInt(HConstants.MASTER_PORT, sn.getPort());
087    cluster.startMaster();
088    // make sure the master is up so we will not get a connect exception
089    TEST_UTIL.waitFor(30000, () -> {
090      try (Socket socket = new Socket(sn.getHostname(), sn.getPort())) {
091        return true;
092      } catch (IOException e) {
093        return false;
094      }
095    });
096    // we should switch to the new active master
097    assertNotNull(FutureUtils.get(admin.getClusterMetrics()));
098  }
099}