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.util;
019
020import static org.junit.jupiter.api.Assertions.assertEquals;
021
022import org.apache.hadoop.conf.Configuration;
023import org.apache.hadoop.hbase.testclassification.MiscTests;
024import org.apache.hadoop.hbase.testclassification.SmallTests;
025import org.junit.jupiter.api.Tag;
026import org.junit.jupiter.api.Test;
027
028@Tag(MiscTests.TAG)
029@Tag(SmallTests.TAG)
030public class TestDNS {
031
032  @Test
033  public void testThriftHostnameOverride() throws Exception {
034    Configuration conf = new Configuration(false);
035    conf.set(DNS.UNSAFE_THRIFT_HOSTNAME_KEY, "hbase-thrift.example.com");
036    // If the hostname override is honored, DNS discovery is not attempted.
037    conf.set("hbase.thrift.dns.interface", "interface-that-does-not-exist");
038
039    assertEquals("hbase-thrift.example.com", DNS.getHostname(conf, DNS.ServerType.THRIFT));
040  }
041}