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.master.procedure;
019
020import java.io.IOException;
021import java.io.UncheckedIOException;
022import java.util.concurrent.CountDownLatch;
023import java.util.concurrent.Future;
024import java.util.concurrent.TimeUnit;
025import org.apache.hadoop.conf.Configuration;
026import org.apache.hadoop.hbase.HBaseTestingUtil;
027import org.apache.hadoop.hbase.StartTestingClusterOption;
028import org.apache.hadoop.hbase.TableName;
029import org.apache.hadoop.hbase.client.Admin;
030import org.apache.hadoop.hbase.client.ColumnFamilyDescriptorBuilder;
031import org.apache.hadoop.hbase.client.Put;
032import org.apache.hadoop.hbase.client.Table;
033import org.apache.hadoop.hbase.client.TableDescriptor;
034import org.apache.hadoop.hbase.client.TableDescriptorBuilder;
035import org.apache.hadoop.hbase.master.HMaster;
036import org.apache.hadoop.hbase.master.assignment.AssignmentManager;
037import org.apache.hadoop.hbase.procedure2.Procedure;
038import org.apache.hadoop.hbase.testclassification.MasterTests;
039import org.apache.hadoop.hbase.testclassification.MediumTests;
040import org.apache.hadoop.hbase.util.Bytes;
041import org.junit.jupiter.api.AfterAll;
042import org.junit.jupiter.api.BeforeAll;
043import org.junit.jupiter.api.Tag;
044import org.junit.jupiter.api.Test;
045import org.slf4j.Logger;
046import org.slf4j.LoggerFactory;
047
048import org.apache.hadoop.hbase.shaded.protobuf.generated.MasterProcedureProtos.CreateTableState;
049
050@Tag(MasterTests.TAG)
051@Tag(MediumTests.TAG)
052public class TestCreateTableNoRegionServer {
053
054  private static final Logger LOG = LoggerFactory.getLogger(TestCreateTableNoRegionServer.class);
055
056  private static final HBaseTestingUtil UTIL = new HBaseTestingUtil();
057
058  private static TableName TABLE_NAME = TableName.valueOf("test");
059
060  private static byte[] FAMILY = Bytes.toBytes("f1");
061
062  private static CountDownLatch ARRIVE;
063
064  private static CountDownLatch RESUME;
065
066  public static final class HMasterForTest extends HMaster {
067
068    public HMasterForTest(Configuration conf) throws IOException {
069      super(conf);
070    }
071
072    private boolean isInAssignRegionsState() {
073      try {
074        for (StackTraceElement e : Thread.currentThread().getStackTrace()) {
075          if (
076            e.getClassName().equals(CreateTableProcedure.class.getName())
077              && e.getMethodName().equals("executeFromState")
078          ) {
079            for (Procedure<?> proc : getProcedures()) {
080              if (
081                proc instanceof CreateTableProcedure && !proc.isFinished()
082                  && ((CreateTableProcedure) proc).getCurrentStateId()
083                      == CreateTableState.CREATE_TABLE_ASSIGN_REGIONS_VALUE
084              ) {
085                return true;
086              }
087            }
088          }
089        }
090      } catch (IOException e) {
091        throw new UncheckedIOException(e);
092      }
093      return false;
094    }
095
096    @Override
097    public AssignmentManager getAssignmentManager() {
098      if (ARRIVE != null && isInAssignRegionsState()) {
099        ARRIVE.countDown();
100        ARRIVE = null;
101        try {
102          RESUME.await();
103        } catch (InterruptedException e) {
104        }
105      }
106      return super.getAssignmentManager();
107    }
108  }
109
110  @BeforeAll
111  public static void setUp() throws Exception {
112    UTIL.startMiniCluster(
113      StartTestingClusterOption.builder().masterClass(HMasterForTest.class).build());
114  }
115
116  @AfterAll
117  public static void tearDown() throws Exception {
118    UTIL.shutdownMiniCluster();
119  }
120
121  @Test
122  public void testCreate() throws Exception {
123    TableDescriptor td = TableDescriptorBuilder.newBuilder(TABLE_NAME)
124      .setColumnFamily(ColumnFamilyDescriptorBuilder.of(FAMILY)).build();
125    Admin admin = UTIL.getAdmin();
126    ARRIVE = new CountDownLatch(1);
127    RESUME = new CountDownLatch(1);
128    Future<Void> future = admin.createTableAsync(td);
129    ARRIVE.await();
130
131    UTIL.getMiniHBaseCluster().stopRegionServer(0).join();
132
133    // make sure we the region server is done.
134    UTIL.waitFor(30000,
135      () -> UTIL.getMiniHBaseCluster().getMaster().getServerManager().getOnlineServers().isEmpty());
136    RESUME.countDown();
137
138    Thread.sleep(10000);
139    // the procedure should still be in the CREATE_TABLE_ASSIGN_REGIONS state, but here, we just
140    // warn it as it may cause more serious problem later.
141    for (Procedure<?> proc : UTIL.getMiniHBaseCluster().getMaster().getProcedures()) {
142      if (
143        proc instanceof CreateTableProcedure && !proc.isFinished()
144          && ((CreateTableProcedure) proc).getCurrentStateId()
145              != CreateTableState.CREATE_TABLE_ASSIGN_REGIONS_VALUE
146      ) {
147        LOG.warn("Create table procedure {} assigned regions without a region server!", proc);
148      }
149    }
150    UTIL.getMiniHBaseCluster().startRegionServer();
151    // the creation should finally be done
152    future.get(30, TimeUnit.SECONDS);
153    // make sure we could put to the table
154    try (Table table =
155      UTIL.getConnection().getTableBuilder(TABLE_NAME, null).setOperationTimeout(5000).build()) {
156      table.put(new Put(Bytes.toBytes(0)).addColumn(FAMILY, Bytes.toBytes("q"), Bytes.toBytes(0)));
157    }
158  }
159}