hbase-server/src/test/java/org/apache/hadoop/hbase/master/TestClockSkewDetection.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.master;
  19
  20 import static org.junit.Assert.fail;
  21
  22 import java.net.InetAddress;
  23 import org.apache.hadoop.conf.Configuration;
  24 import org.apache.hadoop.hbase.ClockOutOfSyncException;
  25 import org.apache.hadoop.hbase.HBaseClassTestRule;
  26 import org.apache.hadoop.hbase.HBaseConfiguration;
  27 import org.apache.hadoop.hbase.testclassification.MasterTests;
  28 import org.apache.hadoop.hbase.testclassification.SmallTests;
  29 import org.junit.ClassRule;
  30 import org.junit.Test;
  31 import org.junit.experimental.categories.Category;
  32 import org.slf4j.Logger;
  33 import org.slf4j.LoggerFactory;
  34
  35 import org.apache.hadoop.hbase.shaded.protobuf.generated.RegionServerStatusProtos.RegionServerStartupRequest;
  36
  37 @Category({MasterTests.class, SmallTests.class})
  38 public class TestClockSkewDetection {
  39
  40   @ClassRule
  41   public static final HBaseClassTestRule CLASS_RULE =
  42       HBaseClassTestRule.forClass(TestClockSkewDetection.class);
  43
  44   private static final Logger LOG =
  45     LoggerFactory.getLogger(TestClockSkewDetection.class);
  46
  47   @Test
  48   public void testClockSkewDetection() throws Exception {
  49     final Configuration conf = HBaseConfiguration.create();
  50     ServerManager sm = new ServerManager(new MockNoopMasterServices(conf));
  51
  52     LOG.debug("regionServerStartup 1");
  53     InetAddress ia1 = InetAddress.getLocalHost();
  54     RegionServerStartupRequest.Builder request = RegionServerStartupRequest.newBuilder();
  55     request.setPort(1234);
  56     request.setServerStartCode(-1);
  57     request.setServerCurrentTime(System.currentTimeMillis());
  58     sm.regionServerStartup(request.build(), 0, "0.0.0", ia1);
  59
  60     final Configuration c = HBaseConfiguration.create();
  61     long maxSkew = c.getLong("hbase.master.maxclockskew", 30000);
  62     long warningSkew = c.getLong("hbase.master.warningclockskew", 1000);
  63
  64     try {
  65       //Master Time > Region Server Time
  66       LOG.debug("Test: Master Time > Region Server Time");
  67       LOG.debug("regionServerStartup 2");
  68       InetAddress ia2 = InetAddress.getLocalHost();
  69       request = RegionServerStartupRequest.newBuilder();
  70       request.setPort(1235);
  71       request.setServerStartCode(-1);
  72       request.setServerCurrentTime(System.currentTimeMillis() - maxSkew * 2);
  73       sm.regionServerStartup(request.build(), 0, "0.0.0", ia2);
  74       fail("HMaster should have thrown a ClockOutOfSyncException but didn't.");
  75     } catch(ClockOutOfSyncException e) {
  76       //we want an exception
  77       LOG.info("Received expected exception: "+e);
  78     }
  79
  80     try {
  81       // Master Time < Region Server Time
  82       LOG.debug("Test: Master Time < Region Server Time");
  83       LOG.debug("regionServerStartup 3");
  84       InetAddress ia3 = InetAddress.getLocalHost();
  85       request = RegionServerStartupRequest.newBuilder();
  86       request.setPort(1236);
  87       request.setServerStartCode(-1);
  88       request.setServerCurrentTime(System.currentTimeMillis() + maxSkew * 2);
  89       sm.regionServerStartup(request.build(), 0, "0.0.0", ia3);
  90       fail("HMaster should have thrown a ClockOutOfSyncException but didn't.");
  91     } catch (ClockOutOfSyncException e) {
  92       // we want an exception
  93       LOG.info("Received expected exception: " + e);
  94     }
  95
  96     // make sure values above warning threshold but below max threshold don't kill
  97     LOG.debug("regionServerStartup 4");
  98     InetAddress ia4 = InetAddress.getLocalHost();
  99     request = RegionServerStartupRequest.newBuilder();
 100     request.setPort(1237);
 101     request.setServerStartCode(-1);
 102     request.setServerCurrentTime(System.currentTimeMillis() - warningSkew * 2);
 103     sm.regionServerStartup(request.build(), 0, "0.0.0", ia4);
 104
 105     // make sure values above warning threshold but below max threshold don't kill
 106     LOG.debug("regionServerStartup 5");
 107     InetAddress ia5 = InetAddress.getLocalHost();
 108     request = RegionServerStartupRequest.newBuilder();
 109     request.setPort(1238);
 110     request.setServerStartCode(-1);
 111     request.setServerCurrentTime(System.currentTimeMillis() + warningSkew * 2);
 112     sm.regionServerStartup(request.build(), 0, "0.0.0", ia5);
 113   }
 114 }