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 static org.junit.Assert.assertEquals;
021import static org.junit.Assert.assertFalse;
022import static org.junit.Assert.assertNotNull;
023import static org.junit.Assert.assertNull;
024import static org.junit.Assert.assertTrue;
025import static org.junit.Assert.fail;
026
027import java.util.ArrayList;
028import java.util.List;
029import org.apache.hadoop.fs.FileSystem;
030import org.apache.hadoop.fs.FileUtil;
031import org.apache.hadoop.fs.Path;
032import org.apache.hadoop.hbase.HBaseClassTestRule;
033import org.apache.hadoop.hbase.TableName;
034import org.apache.hadoop.hbase.TableNotDisabledException;
035import org.apache.hadoop.hbase.TableNotFoundException;
036import org.apache.hadoop.hbase.client.RegionInfo;
037import org.apache.hadoop.hbase.client.Table;
038import org.apache.hadoop.hbase.master.MasterFileSystem;
039import org.apache.hadoop.hbase.procedure2.Procedure;
040import org.apache.hadoop.hbase.procedure2.ProcedureExecutor;
041import org.apache.hadoop.hbase.procedure2.ProcedureTestingUtility;
042import org.apache.hadoop.hbase.regionserver.HRegion;
043import org.apache.hadoop.hbase.testclassification.MasterTests;
044import org.apache.hadoop.hbase.testclassification.MediumTests;
045import org.apache.hadoop.hbase.util.Bytes;
046import org.apache.hadoop.hbase.util.CommonFSUtils;
047import org.apache.hadoop.hbase.util.HFileArchiveTestingUtil;
048import org.junit.ClassRule;
049import org.junit.Rule;
050import org.junit.Test;
051import org.junit.experimental.categories.Category;
052import org.junit.rules.TestName;
053import org.slf4j.Logger;
054import org.slf4j.LoggerFactory;
055
056
057@Category({MasterTests.class, MediumTests.class})
058public class TestDeleteTableProcedure extends TestTableDDLProcedureBase {
059
060  @ClassRule
061  public static final HBaseClassTestRule CLASS_RULE =
062      HBaseClassTestRule.forClass(TestDeleteTableProcedure.class);
063
064  private static final Logger LOG = LoggerFactory.getLogger(TestDeleteTableProcedure.class);
065  @Rule public TestName name = new TestName();
066
067  @Test(expected=TableNotFoundException.class)
068  public void testDeleteNotExistentTable() throws Exception {
069    final TableName tableName = TableName.valueOf(name.getMethodName());
070
071    final ProcedureExecutor<MasterProcedureEnv> procExec = getMasterProcedureExecutor();
072    ProcedurePrepareLatch latch = new ProcedurePrepareLatch.CompatibilityLatch();
073    long procId = ProcedureTestingUtility.submitAndWait(procExec,
074        new DeleteTableProcedure(procExec.getEnvironment(), tableName, latch));
075    latch.await();
076  }
077
078  @Test(expected=TableNotDisabledException.class)
079  public void testDeleteNotDisabledTable() throws Exception {
080    final TableName tableName = TableName.valueOf(name.getMethodName());
081
082    final ProcedureExecutor<MasterProcedureEnv> procExec = getMasterProcedureExecutor();
083    MasterProcedureTestingUtility.createTable(procExec, tableName, null, "f");
084
085    ProcedurePrepareLatch latch = new ProcedurePrepareLatch.CompatibilityLatch();
086    long procId = ProcedureTestingUtility.submitAndWait(procExec,
087        new DeleteTableProcedure(procExec.getEnvironment(), tableName, latch));
088    latch.await();
089  }
090
091  @Test
092  public void testDeleteDeletedTable() throws Exception {
093    final TableName tableName = TableName.valueOf(name.getMethodName());
094    final ProcedureExecutor<MasterProcedureEnv> procExec = getMasterProcedureExecutor();
095
096    RegionInfo[] regions = MasterProcedureTestingUtility.createTable(
097      procExec, tableName, null, "f");
098    UTIL.getAdmin().disableTable(tableName);
099
100    // delete the table (that exists)
101    long procId1 = procExec.submitProcedure(
102        new DeleteTableProcedure(procExec.getEnvironment(), tableName));
103    // delete the table (that will no longer exist)
104    long procId2 = procExec.submitProcedure(
105        new DeleteTableProcedure(procExec.getEnvironment(), tableName));
106
107    // Wait the completion
108    ProcedureTestingUtility.waitProcedure(procExec, procId1);
109    ProcedureTestingUtility.waitProcedure(procExec, procId2);
110
111    // First delete should succeed
112    ProcedureTestingUtility.assertProcNotFailed(procExec, procId1);
113    MasterProcedureTestingUtility.validateTableDeletion(getMaster(), tableName);
114
115    // Second delete should fail with TableNotFound
116    Procedure<?> result = procExec.getResult(procId2);
117    assertTrue(result.isFailed());
118    LOG.debug("Delete failed with exception: " + result.getException());
119    assertTrue(ProcedureTestingUtility.getExceptionCause(result) instanceof TableNotFoundException);
120  }
121
122  @Test
123  public void testSimpleDelete() throws Exception {
124    final TableName tableName = TableName.valueOf(name.getMethodName());
125    final byte[][] splitKeys = null;
126    testSimpleDelete(tableName, splitKeys);
127  }
128
129  @Test
130  public void testSimpleDeleteWithSplits() throws Exception {
131    final TableName tableName = TableName.valueOf(name.getMethodName());
132    final byte[][] splitKeys = new byte[][] {
133      Bytes.toBytes("a"), Bytes.toBytes("b"), Bytes.toBytes("c")
134    };
135    testSimpleDelete(tableName, splitKeys);
136  }
137
138  @Test
139  public void testDeleteFromMeta() throws Exception {
140    final TableName tableName = TableName.valueOf(name.getMethodName());
141    RegionInfo[] regions = MasterProcedureTestingUtility.createTable(
142      getMasterProcedureExecutor(), tableName, null, "f1", "f2");
143    List<RegionInfo> regionsList = new ArrayList<>();
144    UTIL.getAdmin().disableTable(tableName);
145    MasterProcedureEnv procedureEnv = getMasterProcedureExecutor().getEnvironment();
146    assertNotNull("Table should be on TableDescriptors cache.",
147      procedureEnv.getMasterServices().getTableDescriptors().get(tableName));
148    DeleteTableProcedure.deleteFromMeta(procedureEnv, tableName, regionsList);
149    assertNull("Table shouldn't be on TableDescriptors anymore.",
150      procedureEnv.getMasterServices().getTableDescriptors().get(tableName));
151  }
152
153  private void testSimpleDelete(final TableName tableName, byte[][] splitKeys) throws Exception {
154    RegionInfo[] regions = MasterProcedureTestingUtility.createTable(
155      getMasterProcedureExecutor(), tableName, splitKeys, "f1", "f2");
156    UTIL.getAdmin().disableTable(tableName);
157
158    // delete the table
159    final ProcedureExecutor<MasterProcedureEnv> procExec = getMasterProcedureExecutor();
160    long procId = ProcedureTestingUtility.submitAndWait(procExec,
161      new DeleteTableProcedure(procExec.getEnvironment(), tableName));
162    ProcedureTestingUtility.assertProcNotFailed(procExec, procId);
163    MasterProcedureTestingUtility.validateTableDeletion(getMaster(), tableName);
164  }
165
166  @Test
167  public void testRecoveryAndDoubleExecution() throws Exception {
168    final TableName tableName = TableName.valueOf(name.getMethodName());
169
170    // create the table
171    byte[][] splitKeys = null;
172    RegionInfo[] regions = MasterProcedureTestingUtility.createTable(
173      getMasterProcedureExecutor(), tableName, splitKeys, "f1", "f2");
174    UTIL.getAdmin().disableTable(tableName);
175
176    final ProcedureExecutor<MasterProcedureEnv> procExec = getMasterProcedureExecutor();
177    ProcedureTestingUtility.waitNoProcedureRunning(procExec);
178    ProcedureTestingUtility.setKillAndToggleBeforeStoreUpdate(procExec, true);
179
180    // Start the Delete procedure && kill the executor
181    long procId = procExec.submitProcedure(
182      new DeleteTableProcedure(procExec.getEnvironment(), tableName));
183
184    // Restart the executor and execute the step twice
185    MasterProcedureTestingUtility.testRecoveryAndDoubleExecution(procExec, procId);
186
187    MasterProcedureTestingUtility.validateTableDeletion(getMaster(), tableName);
188  }
189
190  @Test
191  public void testDeleteWhenTempDirIsNotEmpty() throws Exception {
192    final TableName tableName = TableName.valueOf(name.getMethodName());
193    final String FAM = "fam";
194    final byte[][] splitKeys = new byte[][] {
195      Bytes.toBytes("b"), Bytes.toBytes("c"), Bytes.toBytes("d")
196    };
197
198    // create the table
199    MasterProcedureTestingUtility.createTable(
200      getMasterProcedureExecutor(), tableName, splitKeys, FAM);
201
202    // get the current store files for the regions
203    List<HRegion> regions = UTIL.getHBaseCluster().getRegions(tableName);
204    // make sure we have 4 regions serving this table
205    assertEquals(4, regions.size());
206
207    // load the table
208    try (Table table = UTIL.getConnection().getTable(tableName)) {
209      UTIL.loadTable(table, Bytes.toBytes(FAM));
210    }
211
212    // disable the table so that we can manipulate the files
213    UTIL.getAdmin().disableTable(tableName);
214
215    final MasterFileSystem masterFileSystem =
216      UTIL.getMiniHBaseCluster().getMaster().getMasterFileSystem();
217    final Path tableDir = CommonFSUtils.getTableDir(masterFileSystem.getRootDir(), tableName);
218    final Path tempDir = masterFileSystem.getTempDir();
219    final Path tempTableDir = CommonFSUtils.getTableDir(tempDir, tableName);
220    final FileSystem fs = masterFileSystem.getFileSystem();
221
222    // copy the table to the temporary directory to make sure the temp directory is not empty
223    if (!FileUtil.copy(fs, tableDir, fs, tempTableDir, false, UTIL.getConfiguration())) {
224      fail();
225    }
226
227    // delete the table
228    final ProcedureExecutor<MasterProcedureEnv> procExec = getMasterProcedureExecutor();
229    long procId = ProcedureTestingUtility.submitAndWait(procExec,
230      new DeleteTableProcedure(procExec.getEnvironment(), tableName));
231    ProcedureTestingUtility.assertProcNotFailed(procExec, procId);
232    MasterProcedureTestingUtility.validateTableDeletion(getMaster(), tableName);
233
234    // check if the temporary directory is deleted
235    assertFalse(fs.exists(tempTableDir));
236
237    // check for the existence of the archive directory
238    for (HRegion region : regions) {
239      Path archiveDir = HFileArchiveTestingUtil.getRegionArchiveDir(UTIL.getConfiguration(),
240        region);
241      assertTrue(fs.exists(archiveDir));
242    }
243  }
244}