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.CommonFSUtils;
033import org.apache.hadoop.hbase.util.FSUtils;
034import org.junit.Test;
035
036public class RestoreSnapshotFromClientSchemaChangeTestBase
037    extends RestoreSnapshotFromClientTestBase {
038
039  private Set<String> getFamiliesFromFS(final TableName tableName) throws IOException {
040    MasterFileSystem mfs = TEST_UTIL.getMiniHBaseCluster().getMaster().getMasterFileSystem();
041    Set<String> families = new HashSet<>();
042    Path tableDir = CommonFSUtils.getTableDir(mfs.getRootDir(), tableName);
043    for (Path regionDir : FSUtils.getRegionDirs(mfs.getFileSystem(), tableDir)) {
044      for (Path familyDir : FSUtils.getFamilyDirs(mfs.getFileSystem(), regionDir)) {
045        families.add(familyDir.getName());
046      }
047    }
048    return families;
049  }
050
051  protected ColumnFamilyDescriptor getTestRestoreSchemaChangeHCD() {
052    return ColumnFamilyDescriptorBuilder.of(TEST_FAMILY2);
053  }
054
055  @Test
056  public void testRestoreSchemaChange() throws Exception {
057    Table table = TEST_UTIL.getConnection().getTable(tableName);
058
059    // Add one column family and put some data in it
060    admin.disableTable(tableName);
061    admin.addColumnFamily(tableName, getTestRestoreSchemaChangeHCD());
062    admin.enableTable(tableName);
063    assertEquals(2, table.getDescriptor().getColumnFamilyCount());
064    TableDescriptor htd = admin.getDescriptor(tableName);
065    assertEquals(2, htd.getColumnFamilyCount());
066    SnapshotTestingUtils.loadData(TEST_UTIL, tableName, 500, TEST_FAMILY2);
067    long snapshot2Rows = snapshot1Rows + 500L;
068    assertEquals(snapshot2Rows, countRows(table));
069    assertEquals(500, countRows(table, TEST_FAMILY2));
070    Set<String> fsFamilies = getFamiliesFromFS(tableName);
071    assertEquals(2, fsFamilies.size());
072
073    // Take a snapshot
074    admin.disableTable(tableName);
075    admin.snapshot(snapshotName2, tableName);
076
077    // Restore the snapshot (without the cf)
078    admin.restoreSnapshot(snapshotName0);
079    admin.enableTable(tableName);
080    assertEquals(1, table.getDescriptor().getColumnFamilyCount());
081    try {
082      countRows(table, TEST_FAMILY2);
083      fail("family '" + Bytes.toString(TEST_FAMILY2) + "' should not exists");
084    } catch (NoSuchColumnFamilyException e) {
085      // expected
086    }
087    assertEquals(snapshot0Rows, countRows(table));
088    htd = admin.getDescriptor(tableName);
089    assertEquals(1, htd.getColumnFamilyCount());
090    fsFamilies = getFamiliesFromFS(tableName);
091    assertEquals(1, fsFamilies.size());
092
093    // Restore back the snapshot (with the cf)
094    admin.disableTable(tableName);
095    admin.restoreSnapshot(snapshotName2);
096    admin.enableTable(tableName);
097    htd = admin.getDescriptor(tableName);
098    assertEquals(2, htd.getColumnFamilyCount());
099    assertEquals(2, table.getDescriptor().getColumnFamilyCount());
100    assertEquals(500, countRows(table, TEST_FAMILY2));
101    assertEquals(snapshot2Rows, countRows(table));
102    fsFamilies = getFamiliesFromFS(tableName);
103    assertEquals(2, fsFamilies.size());
104    table.close();
105  }
106}