hbase-server/src/test/java/org/apache/hadoop/hbase/client/TestMetaWithReplicasBasic.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 import static org.junit.Assert.assertThrows;
  22 import static org.junit.Assert.assertTrue;
  23
  24 import org.apache.hadoop.conf.Configuration;
  25 import org.apache.hadoop.hbase.HBaseClassTestRule;
  26 import org.apache.hadoop.hbase.HConstants;
  27 import org.apache.hadoop.hbase.TableName;
  28 import org.apache.hadoop.hbase.TableNotFoundException;
  29 import org.apache.hadoop.hbase.testclassification.MediumTests;
  30 import org.apache.hadoop.hbase.testclassification.MiscTests;
  31 import org.apache.hadoop.hbase.util.Bytes;
  32 import org.apache.hadoop.hbase.zookeeper.ZKUtil;
  33 import org.apache.hadoop.hbase.zookeeper.ZKWatcher;
  34 import org.apache.hadoop.hbase.zookeeper.ZNodePaths;
  35 import org.junit.BeforeClass;
  36 import org.junit.ClassRule;
  37 import org.junit.Test;
  38 import org.junit.experimental.categories.Category;
  39
  40 import org.apache.hadoop.hbase.shaded.protobuf.ProtobufUtil;
  41
  42 @Category({ MiscTests.class, MediumTests.class })
  43 public class TestMetaWithReplicasBasic extends MetaWithReplicasTestBase {
  44
  45   @ClassRule
  46   public static final HBaseClassTestRule CLASS_RULE =
  47     HBaseClassTestRule.forClass(TestMetaWithReplicasBasic.class);
  48
  49   @BeforeClass
  50   public static void setUp() throws Exception {
  51     startCluster();
  52   }
  53
  54   @Test
  55   public void testMetaHTDReplicaCount() throws Exception {
  56     assertEquals(3,
  57       TEST_UTIL.getAdmin().getDescriptor(TableName.META_TABLE_NAME).getRegionReplication());
  58   }
  59
  60   @Test
  61   public void testZookeeperNodesForReplicas() throws Exception {
  62     // Checks all the znodes exist when meta's replicas are enabled
  63     ZKWatcher zkw = TEST_UTIL.getZooKeeperWatcher();
  64     Configuration conf = TEST_UTIL.getConfiguration();
  65     String baseZNode =
  66       conf.get(HConstants.ZOOKEEPER_ZNODE_PARENT, HConstants.DEFAULT_ZOOKEEPER_ZNODE_PARENT);
  67     String primaryMetaZnode =
  68       ZNodePaths.joinZNode(baseZNode, conf.get("zookeeper.znode.metaserver", "meta-region-server"));
  69     // check that the data in the znode is parseable (this would also mean the znode exists)
  70     byte[] data = ZKUtil.getData(zkw, primaryMetaZnode);
  71     ProtobufUtil.toServerName(data);
  72     for (int i = 1; i < 3; i++) {
  73       String secZnode = ZNodePaths.joinZNode(baseZNode,
  74         conf.get("zookeeper.znode.metaserver", "meta-region-server") + "-" + i);
  75       String str = zkw.getZNodePaths().getZNodeForReplica(i);
  76       assertTrue(str.equals(secZnode));
  77       // check that the data in the znode is parseable (this would also mean the znode exists)
  78       data = ZKUtil.getData(zkw, secZnode);
  79       ProtobufUtil.toServerName(data);
  80     }
  81   }
  82
  83   @Test
  84   public void testAccessingUnknownTables() throws Exception {
  85     Configuration conf = new Configuration(TEST_UTIL.getConfiguration());
  86     conf.setBoolean(HConstants.USE_META_REPLICAS, true);
  87     Table table = TEST_UTIL.getConnection().getTable(name.getTableName());
  88     Get get = new Get(Bytes.toBytes("foo"));
  89     assertThrows(TableNotFoundException.class, () -> table.get(get));
  90   }
  91 }