hbase-server/src/test/java/org/apache/hadoop/hbase/client/TestMetaReplicasAddressChange.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.assertNotEquals;
  21 import static org.junit.Assert.assertTrue;
  22
  23 import java.util.Collection;
  24 import java.util.EnumSet;
  25 import org.apache.hadoop.conf.Configuration;
  26 import org.apache.hadoop.hbase.ClusterMetrics.Option;
  27 import org.apache.hadoop.hbase.HBaseClassTestRule;
  28 import org.apache.hadoop.hbase.HConstants;
  29 import org.apache.hadoop.hbase.ServerName;
  30 import org.apache.hadoop.hbase.TableName;
  31 import org.apache.hadoop.hbase.testclassification.MediumTests;
  32 import org.apache.hadoop.hbase.testclassification.MiscTests;
  33 import org.apache.hadoop.hbase.zookeeper.ZKUtil;
  34 import org.apache.hadoop.hbase.zookeeper.ZKWatcher;
  35 import org.apache.hadoop.hbase.zookeeper.ZNodePaths;
  36 import org.junit.BeforeClass;
  37 import org.junit.ClassRule;
  38 import org.junit.Test;
  39 import org.junit.experimental.categories.Category;
  40 import org.slf4j.Logger;
  41 import org.slf4j.LoggerFactory;
  42
  43 import org.apache.hadoop.hbase.shaded.protobuf.ProtobufUtil;
  44
  45 @Category({ MiscTests.class, MediumTests.class })
  46 public class TestMetaReplicasAddressChange extends MetaWithReplicasTestBase {
  47
  48   @ClassRule
  49   public static final HBaseClassTestRule CLASS_RULE =
  50     HBaseClassTestRule.forClass(TestMetaReplicasAddressChange.class);
  51
  52   private static final Logger LOG = LoggerFactory.getLogger(TestMetaReplicasAddressChange.class);
  53
  54   @BeforeClass
  55   public static void setUp() throws Exception {
  56     startCluster();
  57   }
  58
  59   @Test
  60   public void testMetaAddressChange() throws Exception {
  61     // checks that even when the meta's location changes, the various
  62     // caches update themselves. Uses the master operations to test
  63     // this
  64     Configuration conf = TEST_UTIL.getConfiguration();
  65     ZKWatcher zkw = TEST_UTIL.getZooKeeperWatcher();
  66     String baseZNode =
  67       conf.get(HConstants.ZOOKEEPER_ZNODE_PARENT, HConstants.DEFAULT_ZOOKEEPER_ZNODE_PARENT);
  68     String primaryMetaZnode =
  69       ZNodePaths.joinZNode(baseZNode, conf.get("zookeeper.znode.metaserver", "meta-region-server"));
  70     // check that the data in the znode is parseable (this would also mean the znode exists)
  71     byte[] data = ZKUtil.getData(zkw, primaryMetaZnode);
  72     ServerName currentServer = ProtobufUtil.toServerName(data);
  73     Collection<ServerName> liveServers = TEST_UTIL.getAdmin()
  74       .getClusterMetrics(EnumSet.of(Option.LIVE_SERVERS)).getLiveServerMetrics().keySet();
  75     ServerName moveToServer =
  76       liveServers.stream().filter(s -> !currentServer.equals(s)).findAny().get();
  77     final TableName tableName = name.getTableName();
  78     TEST_UTIL.createTable(tableName, "f");
  79     assertTrue(TEST_UTIL.getAdmin().tableExists(tableName));
  80     TEST_UTIL.getAdmin().move(RegionInfoBuilder.FIRST_META_REGIONINFO.getEncodedNameAsBytes(),
  81       moveToServer);
  82     assertNotEquals(currentServer, moveToServer);
  83     LOG.debug("CurrentServer={}, moveToServer={}", currentServer, moveToServer);
  84     TEST_UTIL.waitFor(60000, () -> {
  85       byte[] bytes = ZKUtil.getData(zkw, primaryMetaZnode);
  86       ServerName actualServer = ProtobufUtil.toServerName(bytes);
  87       return moveToServer.equals(actualServer);
  88     });
  89     TEST_UTIL.getAdmin().disableTable(tableName);
  90     assertTrue(TEST_UTIL.getAdmin().isTableDisabled(tableName));
  91   }
  92 }