hbase-server/src/test/java/org/apache/hadoop/hbase/client/TestZKAsyncRegistry.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.apache.hadoop.hbase.HConstants.META_REPLICAS_NUM;
  21 import static org.junit.Assert.assertEquals;
  22 import static org.junit.Assert.assertNotEquals;
  23 import static org.junit.Assert.assertNotNull;
  24 import static org.junit.Assert.assertNotSame;
  25
  26 import java.io.IOException;
  27 import java.util.concurrent.ExecutionException;
  28 import java.util.stream.IntStream;
  29 import org.apache.commons.io.IOUtils;
  30 import org.apache.hadoop.conf.Configuration;
  31 import org.apache.hadoop.hbase.HBaseClassTestRule;
  32 import org.apache.hadoop.hbase.HBaseTestingUtility;
  33 import org.apache.hadoop.hbase.HConstants;
  34 import org.apache.hadoop.hbase.HRegionLocation;
  35 import org.apache.hadoop.hbase.RegionLocations;
  36 import org.apache.hadoop.hbase.TableName;
  37 import org.apache.hadoop.hbase.testclassification.ClientTests;
  38 import org.apache.hadoop.hbase.testclassification.MediumTests;
  39 import org.apache.hadoop.hbase.zookeeper.ReadOnlyZKClient;
  40 import org.junit.AfterClass;
  41 import org.junit.BeforeClass;
  42 import org.junit.ClassRule;
  43 import org.junit.Test;
  44 import org.junit.experimental.categories.Category;
  45 import org.slf4j.Logger;
  46 import org.slf4j.LoggerFactory;
  47
  48 @Category({ MediumTests.class, ClientTests.class })
  49 public class TestZKAsyncRegistry {
  50
  51   @ClassRule
  52   public static final HBaseClassTestRule CLASS_RULE =
  53     HBaseClassTestRule.forClass(TestZKAsyncRegistry.class);
  54
  55   static final Logger LOG = LoggerFactory.getLogger(TestZKAsyncRegistry.class);
  56   static final HBaseTestingUtility TEST_UTIL = new HBaseTestingUtility();
  57
  58   private static ZKAsyncRegistry REGISTRY;
  59
  60   @BeforeClass
  61   public static void setUp() throws Exception {
  62     TEST_UTIL.getConfiguration().setInt(META_REPLICAS_NUM, 3);
  63     TEST_UTIL.startMiniCluster(3);
  64     REGISTRY = new ZKAsyncRegistry(TEST_UTIL.getConfiguration());
  65   }
  66
  67   @AfterClass
  68   public static void tearDown() throws Exception {
  69     IOUtils.closeQuietly(REGISTRY);
  70     TEST_UTIL.shutdownMiniCluster();
  71   }
  72
  73   @Test
  74   public void test() throws InterruptedException, ExecutionException, IOException {
  75     LOG.info("STARTED TEST");
  76     String clusterId = REGISTRY.getClusterId().get();
  77     String expectedClusterId = TEST_UTIL.getHBaseCluster().getMaster().getClusterId();
  78     assertEquals("Expected " + expectedClusterId + ", found=" + clusterId, expectedClusterId,
  79       clusterId);
  80     assertEquals(TEST_UTIL.getHBaseCluster().getClusterMetrics().getLiveServerMetrics().size(),
  81       REGISTRY.getCurrentNrHRS().get().intValue());
  82     assertEquals(TEST_UTIL.getHBaseCluster().getMaster().getServerName(),
  83       REGISTRY.getMasterAddress().get());
  84     assertEquals(-1, REGISTRY.getMasterInfoPort().get().intValue());
  85     RegionReplicaTestHelper.waitUntilAllMetaReplicasHavingRegionLocation(REGISTRY, 3);
  86     RegionLocations locs = REGISTRY.getMetaRegionLocation().get();
  87     assertEquals(3, locs.getRegionLocations().length);
  88     IntStream.range(0, 3).forEach(i -> {
  89       HRegionLocation loc = locs.getRegionLocation(i);
  90       assertNotNull("Replica " + i + " doesn't have location", loc);
  91       assertEquals(TableName.META_TABLE_NAME, loc.getRegion().getTable());
  92       assertEquals(i, loc.getRegion().getReplicaId());
  93     });
  94   }
  95
  96   @Test
  97   public void testIndependentZKConnections() throws IOException {
  98     try (ReadOnlyZKClient zk1 = REGISTRY.getZKClient()) {
  99       Configuration otherConf = new Configuration(TEST_UTIL.getConfiguration());
 100       otherConf.set(HConstants.ZOOKEEPER_QUORUM, "127.0.0.1");
 101       try (ZKAsyncRegistry otherRegistry = new ZKAsyncRegistry(otherConf)) {
 102         ReadOnlyZKClient zk2 = otherRegistry.getZKClient();
 103         assertNotSame("Using a different configuration / quorum should result in different " +
 104           "backing zk connection.", zk1, zk2);
 105         assertNotEquals(
 106           "Using a different configrution / quorum should be reflected in the zk connection.",
 107           zk1.getConnectString(), zk2.getConnectString());
 108       }
 109     } finally {
 110       LOG.info("DONE!");
 111     }
 112   }
 113 }