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.assertTrue;
023
024import java.io.IOException;
025import org.apache.hadoop.fs.FileStatus;
026import org.apache.hadoop.fs.FileSystem;
027import org.apache.hadoop.fs.Path;
028import org.apache.hadoop.fs.PathFilter;
029import org.apache.hadoop.hbase.HBaseClassTestRule;
030import org.apache.hadoop.hbase.HBaseTestingUtility;
031import org.apache.hadoop.hbase.HColumnDescriptor;
032import org.apache.hadoop.hbase.HConstants;
033import org.apache.hadoop.hbase.HTableDescriptor;
034import org.apache.hadoop.hbase.InvalidFamilyOperationException;
035import org.apache.hadoop.hbase.TableName;
036import org.apache.hadoop.hbase.client.Admin;
037import org.apache.hadoop.hbase.client.Table;
038import org.apache.hadoop.hbase.testclassification.MasterTests;
039import org.apache.hadoop.hbase.testclassification.MediumTests;
040import org.apache.hadoop.hbase.util.Bytes;
041import org.apache.hadoop.hbase.util.CommonFSUtils;
042import org.apache.hadoop.hbase.wal.WALSplitUtil;
043import org.junit.After;
044import org.junit.AfterClass;
045import org.junit.Assert;
046import org.junit.Before;
047import org.junit.BeforeClass;
048import org.junit.ClassRule;
049import org.junit.Test;
050import org.junit.experimental.categories.Category;
051
052@Category({ MasterTests.class, MediumTests.class })
053public class TestDeleteColumnFamilyProcedureFromClient {
054
055  @ClassRule
056  public static final HBaseClassTestRule CLASS_RULE =
057    HBaseClassTestRule.forClass(TestDeleteColumnFamilyProcedureFromClient.class);
058
059  private static final HBaseTestingUtility TEST_UTIL = new HBaseTestingUtility();
060
061  private static final TableName TABLENAME = TableName.valueOf("column_family_handlers");
062  private static final byte[][] FAMILIES =
063    new byte[][] { Bytes.toBytes("cf1"), Bytes.toBytes("cf2"), Bytes.toBytes("cf3") };
064
065  /**
066   * Start up a mini cluster and put a small table of empty regions into it.
067   */
068  @BeforeClass
069  public static void beforeAllTests() throws Exception {
070    TEST_UTIL.startMiniCluster(2);
071  }
072
073  @AfterClass
074  public static void afterAllTests() throws Exception {
075    TEST_UTIL.shutdownMiniCluster();
076  }
077
078  @Before
079  public void setup() throws IOException, InterruptedException {
080    // Create a table of three families. This will assign a region.
081    TEST_UTIL.createTable(TABLENAME, FAMILIES);
082    Table t = TEST_UTIL.getConnection().getTable(TABLENAME);
083    TEST_UTIL.waitUntilNoRegionsInTransition();
084
085    // Load the table with data for all families
086    TEST_UTIL.loadTable(t, FAMILIES);
087
088    TEST_UTIL.flush();
089
090    t.close();
091
092    TEST_UTIL.ensureSomeRegionServersAvailable(2);
093  }
094
095  @After
096  public void cleanup() throws Exception {
097    TEST_UTIL.deleteTable(TABLENAME);
098  }
099
100  @Test
101  public void deleteColumnFamilyWithMultipleRegions() throws Exception {
102    Admin admin = TEST_UTIL.getAdmin();
103    HTableDescriptor beforehtd = admin.getTableDescriptor(TABLENAME);
104
105    FileSystem fs = TEST_UTIL.getDFSCluster().getFileSystem();
106
107    // 1 - Check if table exists in descriptor
108    assertTrue(admin.isTableAvailable(TABLENAME));
109
110    // 2 - Check if all three families exist in descriptor
111    assertEquals(3, beforehtd.getColumnFamilyCount());
112    HColumnDescriptor[] families = beforehtd.getColumnFamilies();
113    for (int i = 0; i < families.length; i++) {
114      assertTrue(families[i].getNameAsString().equals("cf" + (i + 1)));
115    }
116
117    // 3 - Check if table exists in FS
118    Path tableDir = CommonFSUtils.getTableDir(TEST_UTIL.getDefaultRootDirPath(), TABLENAME);
119    assertTrue(fs.exists(tableDir));
120
121    // 4 - Check if all the 3 column families exist in FS
122    FileStatus[] fileStatus = fs.listStatus(tableDir);
123    for (int i = 0; i < fileStatus.length; i++) {
124      if (fileStatus[i].isDirectory() == true) {
125        FileStatus[] cf = fs.listStatus(fileStatus[i].getPath(), new PathFilter() {
126          @Override
127          public boolean accept(Path p) {
128            if (p.getName().contains(HConstants.RECOVERED_EDITS_DIR)) {
129              return false;
130            }
131            return true;
132          }
133        });
134        int k = 1;
135        for (int j = 0; j < cf.length; j++) {
136          if (cf[j].isDirectory() == true && cf[j].getPath().getName().startsWith(".") == false) {
137            assertEquals(cf[j].getPath().getName(), "cf" + k);
138            k++;
139          }
140        }
141      }
142    }
143
144    // TEST - Disable and delete the column family
145    admin.disableTable(TABLENAME);
146    admin.deleteColumnFamily(TABLENAME, Bytes.toBytes("cf2"));
147
148    // 5 - Check if only 2 column families exist in the descriptor
149    HTableDescriptor afterhtd = admin.getTableDescriptor(TABLENAME);
150    assertEquals(2, afterhtd.getColumnFamilyCount());
151    HColumnDescriptor[] newFamilies = afterhtd.getColumnFamilies();
152    assertTrue(newFamilies[0].getNameAsString().equals("cf1"));
153    assertTrue(newFamilies[1].getNameAsString().equals("cf3"));
154
155    // 6 - Check if the second column family is gone from the FS
156    fileStatus = fs.listStatus(tableDir);
157    for (int i = 0; i < fileStatus.length; i++) {
158      if (fileStatus[i].isDirectory() == true) {
159        FileStatus[] cf = fs.listStatus(fileStatus[i].getPath(), new PathFilter() {
160          @Override
161          public boolean accept(Path p) {
162            if (WALSplitUtil.isSequenceIdFile(p)) {
163              return false;
164            }
165            return true;
166          }
167        });
168        for (int j = 0; j < cf.length; j++) {
169          if (cf[j].isDirectory() == true) {
170            assertFalse(cf[j].getPath().getName().equals("cf2"));
171          }
172        }
173      }
174    }
175  }
176
177  @Test
178  public void deleteColumnFamilyTwice() throws Exception {
179    Admin admin = TEST_UTIL.getAdmin();
180    HTableDescriptor beforehtd = admin.getTableDescriptor(TABLENAME);
181    String cfToDelete = "cf1";
182
183    FileSystem fs = TEST_UTIL.getDFSCluster().getFileSystem();
184
185    // 1 - Check if table exists in descriptor
186    assertTrue(admin.isTableAvailable(TABLENAME));
187
188    // 2 - Check if all the target column family exist in descriptor
189    HColumnDescriptor[] families = beforehtd.getColumnFamilies();
190    Boolean foundCF = false;
191    for (int i = 0; i < families.length; i++) {
192      if (families[i].getNameAsString().equals(cfToDelete)) {
193        foundCF = true;
194        break;
195      }
196    }
197    assertTrue(foundCF);
198
199    // 3 - Check if table exists in FS
200    Path tableDir = CommonFSUtils.getTableDir(TEST_UTIL.getDefaultRootDirPath(), TABLENAME);
201    assertTrue(fs.exists(tableDir));
202
203    // 4 - Check if all the target column family exist in FS
204    FileStatus[] fileStatus = fs.listStatus(tableDir);
205    foundCF = false;
206    for (int i = 0; i < fileStatus.length; i++) {
207      if (fileStatus[i].isDirectory() == true) {
208        FileStatus[] cf = fs.listStatus(fileStatus[i].getPath(), new PathFilter() {
209          @Override
210          public boolean accept(Path p) {
211            if (p.getName().contains(HConstants.RECOVERED_EDITS_DIR)) {
212              return false;
213            }
214            return true;
215          }
216        });
217        for (int j = 0; j < cf.length; j++) {
218          if (cf[j].isDirectory() == true && cf[j].getPath().getName().equals(cfToDelete)) {
219            foundCF = true;
220            break;
221          }
222        }
223      }
224      if (foundCF) {
225        break;
226      }
227    }
228    assertTrue(foundCF);
229
230    // TEST - Disable and delete the column family
231    if (admin.isTableEnabled(TABLENAME)) {
232      admin.disableTable(TABLENAME);
233    }
234    admin.deleteColumnFamily(TABLENAME, Bytes.toBytes(cfToDelete));
235
236    // 5 - Check if the target column family is gone from the FS
237    fileStatus = fs.listStatus(tableDir);
238    for (int i = 0; i < fileStatus.length; i++) {
239      if (fileStatus[i].isDirectory() == true) {
240        FileStatus[] cf = fs.listStatus(fileStatus[i].getPath(), new PathFilter() {
241          @Override
242          public boolean accept(Path p) {
243            if (WALSplitUtil.isSequenceIdFile(p)) {
244              return false;
245            }
246            return true;
247          }
248        });
249        for (int j = 0; j < cf.length; j++) {
250          if (cf[j].isDirectory() == true) {
251            assertFalse(cf[j].getPath().getName().equals(cfToDelete));
252          }
253        }
254      }
255    }
256
257    try {
258      // Test: delete again
259      admin.deleteColumnFamily(TABLENAME, Bytes.toBytes(cfToDelete));
260      Assert.fail("Delete a non-exist column family should fail");
261    } catch (InvalidFamilyOperationException e) {
262      // Expected.
263    }
264  }
265}