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.regionserver;
019
020import java.io.IOException;
021import org.apache.hadoop.conf.Configuration;
022import org.apache.hadoop.hbase.CompatibilityFactory;
023import org.apache.hadoop.hbase.HBaseTestingUtil;
024import org.apache.hadoop.hbase.HConstants;
025import org.apache.hadoop.hbase.NamespaceDescriptor;
026import org.apache.hadoop.hbase.SingleProcessHBaseCluster;
027import org.apache.hadoop.hbase.TableName;
028import org.apache.hadoop.hbase.client.Admin;
029import org.apache.hadoop.hbase.client.Put;
030import org.apache.hadoop.hbase.client.RegionInfo;
031import org.apache.hadoop.hbase.client.RegionLocator;
032import org.apache.hadoop.hbase.client.Table;
033import org.apache.hadoop.hbase.test.MetricsAssertHelper;
034import org.apache.hadoop.hbase.testclassification.LargeTests;
035import org.apache.hadoop.hbase.testclassification.RegionServerTests;
036import org.apache.hadoop.hbase.util.Bytes;
037import org.apache.hadoop.hbase.util.Threads;
038import org.junit.jupiter.api.BeforeAll;
039import org.junit.jupiter.api.Tag;
040import org.junit.jupiter.api.Test;
041import org.junit.jupiter.api.TestInfo;
042
043@Tag(RegionServerTests.TAG)
044@Tag(LargeTests.TAG)
045public class TestRemoveRegionMetrics {
046
047  private static SingleProcessHBaseCluster cluster;
048  private static Configuration conf;
049  private static HBaseTestingUtil TEST_UTIL;
050  private static MetricsAssertHelper metricsHelper;
051
052  @BeforeAll
053  public static void startCluster() throws Exception {
054    metricsHelper = CompatibilityFactory.getInstance(MetricsAssertHelper.class);
055    TEST_UTIL = new HBaseTestingUtil();
056    conf = TEST_UTIL.getConfiguration();
057    conf.getLong("hbase.splitlog.max.resubmit", 0);
058    // Make the failure test faster
059    conf.setInt("zookeeper.recovery.retry", 0);
060    conf.setInt(HConstants.REGIONSERVER_INFO_PORT, -1);
061
062    TEST_UTIL.startMiniCluster(2);
063    cluster = TEST_UTIL.getHBaseCluster();
064
065    cluster.waitForActiveAndReadyMaster();
066
067    while (cluster.getLiveRegionServerThreads().size() < 2) {
068      Threads.sleep(100);
069    }
070  }
071
072  @Test
073  public void testMoveRegion(TestInfo testInfo) throws IOException, InterruptedException {
074    String tableNameString = testInfo.getTestMethod().get().getName();
075    TableName tableName = TableName.valueOf(tableNameString);
076    Table t = TEST_UTIL.createTable(tableName, Bytes.toBytes("D"));
077    TEST_UTIL.waitUntilAllRegionsAssigned(t.getName());
078    Admin admin = TEST_UTIL.getAdmin();
079    RegionInfo regionInfo;
080    byte[] row = Bytes.toBytes("r1");
081
082    for (int i = 0; i < 30; i++) {
083      boolean moved = false;
084      try (RegionLocator locator = TEST_UTIL.getConnection().getRegionLocator(tableName)) {
085        regionInfo = locator.getRegionLocation(row, true).getRegion();
086      }
087
088      int currentServerIdx = cluster.getServerWith(regionInfo.getRegionName());
089      int destServerIdx = (currentServerIdx + 1) % cluster.getLiveRegionServerThreads().size();
090      HRegionServer currentServer = cluster.getRegionServer(currentServerIdx);
091      HRegionServer destServer = cluster.getRegionServer(destServerIdx);
092
093      // Do a put. The counters should be non-zero now
094      Put p = new Put(row);
095      p.addColumn(Bytes.toBytes("D"), Bytes.toBytes("Zero"), Bytes.toBytes("VALUE"));
096      t.put(p);
097
098      MetricsRegionAggregateSource currentAgg = currentServer.getRegion(regionInfo.getRegionName())
099        .getMetrics().getSource().getAggregateSource();
100
101      String prefix = "namespace_" + NamespaceDescriptor.DEFAULT_NAMESPACE_NAME_STR + "_table_"
102        + tableNameString + "_region_" + regionInfo.getEncodedName() + "_metric";
103
104      metricsHelper.assertCounter(prefix + "_putCount", 1, currentAgg);
105
106      try {
107        TEST_UTIL.moveRegionAndWait(regionInfo, destServer.getServerName());
108        moved = true;
109      } catch (IOException ioe) {
110        moved = false;
111      }
112
113      if (moved) {
114        MetricsRegionAggregateSource destAgg = destServer.getRegion(regionInfo.getRegionName())
115          .getMetrics().getSource().getAggregateSource();
116        metricsHelper.assertCounter(prefix + "_putCount", 0, destAgg);
117      }
118    }
119
120    TEST_UTIL.deleteTable(tableName);
121
122  }
123}