hbase-server/src/test/java/org/apache/hadoop/hbase/TestRegionReplicationLagEvaluation.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;
  19
  20 import static org.junit.Assert.assertEquals;
  21
  22 import org.apache.hadoop.hbase.metrics.impl.FastLongHistogram;
  23 import org.apache.hadoop.hbase.testclassification.MediumTests;
  24 import org.apache.hadoop.hbase.testclassification.MiscTests;
  25 import org.apache.hadoop.hbase.util.ServerRegionReplicaUtil;
  26 import org.apache.hadoop.util.ToolRunner;
  27 import org.junit.AfterClass;
  28 import org.junit.BeforeClass;
  29 import org.junit.ClassRule;
  30 import org.junit.Test;
  31 import org.junit.experimental.categories.Category;
  32
  33 @Category({ MiscTests.class, MediumTests.class })
  34 public class TestRegionReplicationLagEvaluation {
  35
  36   @ClassRule
  37   public static final HBaseClassTestRule CLASS_RULE =
  38     HBaseClassTestRule.forClass(TestRegionReplicationLagEvaluation.class);
  39
  40   private static final HBaseTestingUtil UTIL = new HBaseTestingUtil();
  41
  42   @BeforeClass
  43   public static void setUp() throws Exception {
  44     UTIL.getConfiguration().setBoolean(ServerRegionReplicaUtil.REGION_REPLICA_REPLICATION_CONF_KEY,
  45       true);
  46     UTIL.startMiniCluster(2);
  47   }
  48
  49   @AfterClass
  50   public static void tearDown() throws Exception {
  51     UTIL.shutdownMiniCluster();
  52   }
  53
  54   @Test
  55   public void test() throws Exception {
  56     RegionReplicationLagEvaluation tool = new RegionReplicationLagEvaluation();
  57     assertEquals(0, ToolRunner.run(UTIL.getConfiguration(), tool, new String[] { "-r", "1000" }));
  58     FastLongHistogram histogram = tool.getHistogram();
  59     assertEquals(1000, histogram.getCount());
  60   }
  61 }