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.apache.hadoop.hbase.util.EnvironmentEdgeManager;
  30 import org.junit.ClassRule;
  31 import org.junit.Test;
  32 import org.junit.experimental.categories.Category;
  33 import org.slf4j.Logger;
  34 import org.slf4j.LoggerFactory;
  35
  36 import org.apache.hadoop.hbase.shaded.protobuf.generated.RegionServerStatusProtos.RegionServerStartupRequest;
  37
  38 @Category({MasterTests.class, SmallTests.class})
  39 public class TestClockSkewDetection {
  40
  41   @ClassRule
  42   public static final HBaseClassTestRule CLASS_RULE =
  43       HBaseClassTestRule.forClass(TestClockSkewDetection.class);
  44
  45   private static final Logger LOG =
  46     LoggerFactory.getLogger(TestClockSkewDetection.class);
  47
  48   @Test
  49   public void testClockSkewDetection() throws Exception {
  50     final Configuration conf = HBaseConfiguration.create();
  51     ServerManager sm =
  52       new ServerManager(new MockNoopMasterServices(conf), new DummyRegionServerList());
  53
  54     LOG.debug("regionServerStartup 1");
  55     InetAddress ia1 = InetAddress.getLocalHost();
  56     RegionServerStartupRequest.Builder request = RegionServerStartupRequest.newBuilder();
  57     request.setPort(1234);
  58     request.setServerStartCode(-1);
  59     request.setServerCurrentTime(EnvironmentEdgeManager.currentTime());
  60     sm.regionServerStartup(request.build(), 0, "0.0.0", ia1);
  61
  62     final Configuration c = HBaseConfiguration.create();
  63     long maxSkew = c.getLong("hbase.master.maxclockskew", 30000);
  64     long warningSkew = c.getLong("hbase.master.warningclockskew", 1000);
  65
  66     try {
  67       //Master Time > Region Server Time
  68       LOG.debug("Test: Master Time > Region Server Time");
  69       LOG.debug("regionServerStartup 2");
  70       InetAddress ia2 = InetAddress.getLocalHost();
  71       request = RegionServerStartupRequest.newBuilder();
  72       request.setPort(1235);
  73       request.setServerStartCode(-1);
  74       request.setServerCurrentTime(EnvironmentEdgeManager.currentTime() - maxSkew * 2);
  75       sm.regionServerStartup(request.build(), 0, "0.0.0", ia2);
  76       fail("HMaster should have thrown a ClockOutOfSyncException but didn't.");
  77     } catch(ClockOutOfSyncException e) {
  78       //we want an exception
  79       LOG.info("Received expected exception: "+e);
  80     }
  81
  82     try {
  83       // Master Time < Region Server Time
  84       LOG.debug("Test: Master Time < Region Server Time");
  85       LOG.debug("regionServerStartup 3");
  86       InetAddress ia3 = InetAddress.getLocalHost();
  87       request = RegionServerStartupRequest.newBuilder();
  88       request.setPort(1236);
  89       request.setServerStartCode(-1);
  90       request.setServerCurrentTime(EnvironmentEdgeManager.currentTime() + maxSkew * 2);
  91       sm.regionServerStartup(request.build(), 0, "0.0.0", ia3);
  92       fail("HMaster should have thrown a ClockOutOfSyncException but didn't.");
  93     } catch (ClockOutOfSyncException e) {
  94       // we want an exception
  95       LOG.info("Received expected exception: " + e);
  96     }
  97
  98     // make sure values above warning threshold but below max threshold don't kill
  99     LOG.debug("regionServerStartup 4");
 100     InetAddress ia4 = InetAddress.getLocalHost();
 101     request = RegionServerStartupRequest.newBuilder();
 102     request.setPort(1237);
 103     request.setServerStartCode(-1);
 104     request.setServerCurrentTime(EnvironmentEdgeManager.currentTime() - warningSkew * 2);
 105     sm.regionServerStartup(request.build(), 0, "0.0.0", ia4);
 106
 107     // make sure values above warning threshold but below max threshold don't kill
 108     LOG.debug("regionServerStartup 5");
 109     InetAddress ia5 = InetAddress.getLocalHost();
 110     request = RegionServerStartupRequest.newBuilder();
 111     request.setPort(1238);
 112     request.setServerStartCode(-1);
 113     request.setServerCurrentTime(EnvironmentEdgeManager.currentTime() + warningSkew * 2);
 114     sm.regionServerStartup(request.build(), 0, "0.0.0", ia5);
 115   }
 116 }