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.junit.Assert.assertEquals;
021import static org.junit.Assert.fail;
022
023import java.io.IOException;
024import java.util.HashSet;
025import java.util.Set;
026import org.apache.hadoop.fs.Path;
027import org.apache.hadoop.hbase.TableName;
028import org.apache.hadoop.hbase.master.MasterFileSystem;
029import org.apache.hadoop.hbase.regionserver.NoSuchColumnFamilyException;
030import org.apache.hadoop.hbase.snapshot.SnapshotTestingUtils;
031import org.apache.hadoop.hbase.util.Bytes;
032import org.apache.hadoop.hbase.util.FSUtils;
033import org.junit.Test;
034
035public class RestoreSnapshotFromClientSchemaChangeTestBase
036    extends RestoreSnapshotFromClientTestBase {
037
038  private Set<String> getFamiliesFromFS(final TableName tableName) throws IOException {
039    MasterFileSystem mfs = TEST_UTIL.getMiniHBaseCluster().getMaster().getMasterFileSystem();
040    Set<String> families = new HashSet<>();
041    Path tableDir = FSUtils.getTableDir(mfs.getRootDir(), tableName);
042    for (Path regionDir : FSUtils.getRegionDirs(mfs.getFileSystem(), tableDir)) {
043      for (Path familyDir : FSUtils.getFamilyDirs(mfs.getFileSystem(), regionDir)) {
044        families.add(familyDir.getName());
045      }
046    }
047    return families;
048  }
049
050  protected ColumnFamilyDescriptor getTestRestoreSchemaChangeHCD() {
051    return ColumnFamilyDescriptorBuilder.of(TEST_FAMILY2);
052  }
053
054  @Test
055  public void testRestoreSchemaChange() throws Exception {
056    Table table = TEST_UTIL.getConnection().getTable(tableName);
057
058    // Add one column family and put some data in it
059    admin.disableTable(tableName);
060    admin.addColumnFamily(tableName, getTestRestoreSchemaChangeHCD());
061    admin.enableTable(tableName);
062    assertEquals(2, table.getDescriptor().getColumnFamilyCount());
063    TableDescriptor htd = admin.getDescriptor(tableName);
064    assertEquals(2, htd.getColumnFamilyCount());
065    SnapshotTestingUtils.loadData(TEST_UTIL, tableName, 500, TEST_FAMILY2);
066    long snapshot2Rows = snapshot1Rows + 500L;
067    assertEquals(snapshot2Rows, countRows(table));
068    assertEquals(500, countRows(table, TEST_FAMILY2));
069    Set<String> fsFamilies = getFamiliesFromFS(tableName);
070    assertEquals(2, fsFamilies.size());
071
072    // Take a snapshot
073    admin.disableTable(tableName);
074    admin.snapshot(snapshotName2, tableName);
075
076    // Restore the snapshot (without the cf)
077    admin.restoreSnapshot(snapshotName0);
078    admin.enableTable(tableName);
079    assertEquals(1, table.getDescriptor().getColumnFamilyCount());
080    try {
081      countRows(table, TEST_FAMILY2);
082      fail("family '" + Bytes.toString(TEST_FAMILY2) + "' should not exists");
083    } catch (NoSuchColumnFamilyException e) {
084      // expected
085    }
086    assertEquals(snapshot0Rows, countRows(table));
087    htd = admin.getDescriptor(tableName);
088    assertEquals(1, htd.getColumnFamilyCount());
089    fsFamilies = getFamiliesFromFS(tableName);
090    assertEquals(1, fsFamilies.size());
091
092    // Restore back the snapshot (with the cf)
093    admin.disableTable(tableName);
094    admin.restoreSnapshot(snapshotName2);
095    admin.enableTable(tableName);
096    htd = admin.getDescriptor(tableName);
097    assertEquals(2, htd.getColumnFamilyCount());
098    assertEquals(2, table.getDescriptor().getColumnFamilyCount());
099    assertEquals(500, countRows(table, TEST_FAMILY2));
100    assertEquals(snapshot2Rows, countRows(table));
101    fsFamilies = getFamiliesFromFS(tableName);
102    assertEquals(2, fsFamilies.size());
103    table.close();
104  }
105}