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.client;
019
020import static org.apache.hadoop.hbase.HConstants.HBASE_CLIENT_META_OPERATION_TIMEOUT;
021import static org.apache.hadoop.hbase.io.ByteBuffAllocator.MAX_BUFFER_COUNT_KEY;
022import static org.junit.jupiter.api.Assertions.assertEquals;
023
024import java.io.IOException;
025import java.util.ArrayList;
026import java.util.Arrays;
027import java.util.Collections;
028import java.util.List;
029import java.util.concurrent.ExecutionException;
030import java.util.concurrent.ExecutorService;
031import java.util.concurrent.Executors;
032import java.util.concurrent.Future;
033import java.util.concurrent.ThreadLocalRandom;
034import java.util.concurrent.TimeUnit;
035import java.util.concurrent.atomic.AtomicBoolean;
036import java.util.stream.Collectors;
037import java.util.stream.IntStream;
038import org.apache.hadoop.hbase.HBaseTestingUtil;
039import org.apache.hadoop.hbase.MemoryCompactionPolicy;
040import org.apache.hadoop.hbase.ServerName;
041import org.apache.hadoop.hbase.TableName;
042import org.apache.hadoop.hbase.Waiter.ExplainingPredicate;
043import org.apache.hadoop.hbase.regionserver.CompactingMemStore;
044import org.apache.hadoop.hbase.regionserver.HRegion;
045import org.apache.hadoop.hbase.testclassification.ClientTests;
046import org.apache.hadoop.hbase.testclassification.LargeTests;
047import org.apache.hadoop.hbase.util.Bytes;
048import org.apache.hadoop.hbase.util.RetryCounter;
049import org.apache.hadoop.hbase.util.Threads;
050import org.junit.jupiter.api.AfterAll;
051import org.junit.jupiter.api.BeforeAll;
052import org.junit.jupiter.api.Tag;
053import org.junit.jupiter.api.Test;
054import org.slf4j.Logger;
055import org.slf4j.LoggerFactory;
056
057import org.apache.hbase.thirdparty.com.google.common.io.Closeables;
058import org.apache.hbase.thirdparty.com.google.common.util.concurrent.ThreadFactoryBuilder;
059
060/**
061 * Will split the table, and move region randomly when testing.
062 */
063@Tag(LargeTests.TAG)
064@Tag(ClientTests.TAG)
065public class TestAsyncTableGetMultiThreaded {
066
067  private static final Logger LOG = LoggerFactory.getLogger(TestAsyncTableGetMultiThreaded.class);
068
069  private static final HBaseTestingUtil TEST_UTIL = new HBaseTestingUtil();
070
071  private static final TableName TABLE_NAME = TableName.valueOf("async");
072  private static final byte[] FAMILY = Bytes.toBytes("cf");
073  private static final byte[] QUALIFIER = Bytes.toBytes("cq");
074  private static final int COUNT = 1000;
075
076  private static AsyncConnection CONN;
077
078  private static AsyncTable<?> TABLE;
079
080  private static byte[][] SPLIT_KEYS;
081
082  @BeforeAll
083  public static void setUp() throws Exception {
084    setUp(MemoryCompactionPolicy.NONE);
085  }
086
087  protected static void setUp(MemoryCompactionPolicy memoryCompaction) throws Exception {
088    TEST_UTIL.getConfiguration().setLong(HBASE_CLIENT_META_OPERATION_TIMEOUT, 60000L);
089    TEST_UTIL.getConfiguration().setInt(MAX_BUFFER_COUNT_KEY, 100);
090    TEST_UTIL.getConfiguration().set(CompactingMemStore.COMPACTING_MEMSTORE_TYPE_KEY,
091      String.valueOf(memoryCompaction));
092    TEST_UTIL.getConfiguration().setBoolean("hbase.master.balancer.decision.buffer.enabled", true);
093
094    TEST_UTIL.startMiniCluster(3);
095    SPLIT_KEYS = new byte[8][];
096    for (int i = 111; i < 999; i += 111) {
097      SPLIT_KEYS[i / 111 - 1] = Bytes.toBytes(String.format("%03d", i));
098    }
099    TEST_UTIL.createTable(TABLE_NAME, FAMILY);
100    TEST_UTIL.waitTableAvailable(TABLE_NAME);
101    CONN = ConnectionFactory.createAsyncConnection(TEST_UTIL.getConfiguration()).get();
102    TABLE = CONN.getTableBuilder(TABLE_NAME).setReadRpcTimeout(1, TimeUnit.SECONDS)
103      .setMaxRetries(1000).build();
104    TABLE.putAll(
105      IntStream.range(0, COUNT).mapToObj(i -> new Put(Bytes.toBytes(String.format("%03d", i)))
106        .addColumn(FAMILY, QUALIFIER, Bytes.toBytes(i))).collect(Collectors.toList()))
107      .get();
108  }
109
110  @AfterAll
111  public static void tearDown() throws Exception {
112    Closeables.close(CONN, true);
113    TEST_UTIL.shutdownMiniCluster();
114  }
115
116  private void run(AtomicBoolean stop) throws InterruptedException, ExecutionException {
117    while (!stop.get()) {
118      for (int i = 0; i < COUNT; i++) {
119        assertEquals(i, Bytes.toInt(TABLE.get(new Get(Bytes.toBytes(String.format("%03d", i))))
120          .get().getValue(FAMILY, QUALIFIER)));
121      }
122      // sleep a bit so we do not add to much load to the test machine as we have 20 threads here
123      Thread.sleep(10);
124    }
125  }
126
127  @Test
128  public void test() throws Exception {
129    LOG.info("====== Test started ======");
130    int numThreads = 7;
131    AtomicBoolean stop = new AtomicBoolean(false);
132    ExecutorService executor = Executors.newFixedThreadPool(numThreads,
133      new ThreadFactoryBuilder().setNameFormat("TestAsyncGet-pool-%d").setDaemon(true)
134        .setUncaughtExceptionHandler(Threads.LOGGING_EXCEPTION_HANDLER).build());
135    List<Future<?>> futures = new ArrayList<>();
136    IntStream.range(0, numThreads).forEach(i -> futures.add(executor.submit(() -> {
137      run(stop);
138      return null;
139    })));
140    LOG.info("====== Scheduled {} read threads ======", numThreads);
141    Collections.shuffle(Arrays.asList(SPLIT_KEYS), ThreadLocalRandom.current());
142    Admin admin = TEST_UTIL.getAdmin();
143    for (byte[] splitPoint : SPLIT_KEYS) {
144      int oldRegionCount = admin.getRegions(TABLE_NAME).size();
145      LOG.info("====== Splitting at {} ======, region count before splitting is {}",
146        Bytes.toStringBinary(splitPoint), oldRegionCount);
147      admin.split(TABLE_NAME, splitPoint);
148      TEST_UTIL.waitFor(30000, new ExplainingPredicate<Exception>() {
149        @Override
150        public boolean evaluate() throws Exception {
151          return TEST_UTIL.getMiniHBaseCluster().getRegions(TABLE_NAME).size() > oldRegionCount;
152        }
153
154        @Override
155        public String explainFailure() throws Exception {
156          return "Split has not finished yet";
157        }
158      });
159      List<HRegion> regions = TEST_UTIL.getMiniHBaseCluster().getRegions(TABLE_NAME);
160      LOG.info("====== Split at {} ======, region count after splitting is {}",
161        Bytes.toStringBinary(splitPoint), regions.size());
162      for (HRegion region : regions) {
163        LOG.info("====== Compact {} ======", region.getRegionInfo());
164        region.compact(true);
165      }
166      for (HRegion region : regions) {
167        // Waiting for compaction to complete and references are cleaned up
168        LOG.info("====== Waiting for compaction on {} ======", region.getRegionInfo());
169        RetryCounter retrier = new RetryCounter(30, 1, TimeUnit.SECONDS);
170        for (;;) {
171          try {
172            if (
173              admin.getCompactionStateForRegion(region.getRegionInfo().getRegionName())
174                  == CompactionState.NONE
175            ) {
176              break;
177            }
178          } catch (IOException e) {
179            LOG.warn("Failed to query");
180          }
181          if (!retrier.shouldRetry()) {
182            throw new IOException("Can not finish compaction in time after attempt "
183              + retrier.getAttemptTimes() + " times");
184          }
185          retrier.sleepUntilNextRetry();
186        }
187        LOG.info("====== Compaction on {} finished, close and archive compacted files ======",
188          region.getRegionInfo());
189        region.getStores().get(0).closeAndArchiveCompactedFiles();
190        LOG.info("====== Close and archive compacted files on {} done ======",
191          region.getRegionInfo());
192      }
193      Thread.sleep(5000);
194      LOG.info("====== Balancing cluster ======");
195      admin.balance(BalanceRequest.newBuilder().setIgnoreRegionsInTransition(true).build());
196      LOG.info("====== Balance cluster done ======");
197      Thread.sleep(5000);
198      ServerName metaServer = TEST_UTIL.getHBaseCluster().getServerHoldingMeta();
199      ServerName newMetaServer = TEST_UTIL.getHBaseCluster().getRegionServerThreads().stream()
200        .map(t -> t.getRegionServer().getServerName()).filter(s -> !s.equals(metaServer)).findAny()
201        .get();
202      LOG.info("====== Moving meta from {} to {} ======", metaServer, newMetaServer);
203      admin.move(RegionInfoBuilder.FIRST_META_REGIONINFO.getEncodedNameAsBytes(), newMetaServer);
204      LOG.info("====== Move meta done ======");
205      Thread.sleep(5000);
206    }
207    List<LogEntry> balancerDecisionRecords =
208      admin.getLogEntries(null, "BALANCER_DECISION", ServerType.MASTER, 2, null);
209    assertEquals(balancerDecisionRecords.size(), 2);
210    LOG.info("====== Read test finished, shutdown thread pool ======");
211    stop.set(true);
212    executor.shutdown();
213    for (int i = 0; i < numThreads; i++) {
214      LOG.info("====== Waiting for {} threads to finish, remaining {} ======", numThreads,
215        numThreads - i);
216      futures.get(i).get();
217    }
218    LOG.info("====== Test test finished ======");
219  }
220}