TestRemoteBackup.java example

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/**
 * Licensed to the Apache Software Foundation (ASF) under one or more contributor license
 * agreements. See the NOTICE file distributed with this work for additional information regarding
 * copyright ownership. The ASF licenses this file to you under the Apache License, Version 2.0 (the
 * "License"); you may not use this file except in compliance with the License. You may obtain a
 * copy of the License at http://www.apache.org/licenses/LICENSE-2.0 Unless required by applicable
 * law or agreed to in writing, software distributed under the License is distributed on an "AS IS"
 * BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the License
 * for the specific language governing permissions and limitations under the License.
 */

package org.apache.hadoop.hbase.backup;

import static org.junit.Assert.assertTrue;

import java.io.IOException;
import java.util.concurrent.CountDownLatch;

import org.apache.commons.logging.Log;
import org.apache.commons.logging.LogFactory;
import org.apache.hadoop.hbase.HBaseTestingUtility;
import org.apache.hadoop.hbase.HColumnDescriptor;
import org.apache.hadoop.hbase.TableName;
import org.apache.hadoop.hbase.backup.util.BackupUtils;
import org.apache.hadoop.hbase.client.Connection;
import org.apache.hadoop.hbase.client.ConnectionFactory;
import org.apache.hadoop.hbase.client.HBaseAdmin;
import org.apache.hadoop.hbase.client.HTable;
import org.apache.hadoop.hbase.client.Put;
import org.apache.hadoop.hbase.snapshot.MobSnapshotTestingUtils;
import org.apache.hadoop.hbase.snapshot.SnapshotTestingUtils;
import org.apache.hadoop.hbase.testclassification.LargeTests;
import org.apache.hadoop.hbase.util.Bytes;
import org.junit.Assert;
import org.junit.Test;
import org.junit.experimental.categories.Category;

import com.google.common.collect.Lists;

@Category(LargeTests.class)
public class TestRemoteBackup extends TestBackupBase {

  private static final Log LOG = LogFactory.getLog(TestRemoteBackup.class);

  /**
   * Verify that a remote full backup is created on a single table with data correctly.
   * @throws Exception
   */
  @Test
  public void testFullBackupRemote() throws Exception {
    LOG.info("test remote full backup on a single table");
    final CountDownLatch latch = new CountDownLatch(1);
    final int NB_ROWS_IN_FAM3 = 6;
    final byte[] fam3Name = Bytes.toBytes("f3");
    final byte[] fam2Name = Bytes.toBytes("f2");
    final Connection conn = ConnectionFactory.createConnection(conf1);
    Thread t = new Thread() {
      @Override
      public void run() {
        try {
          latch.await();
        } catch (InterruptedException ie) {
        }
        try {
          HTable t1 = (HTable) conn.getTable(table1);
          Put p1;
          for (int i = 0; i < NB_ROWS_IN_FAM3; i++) {
            p1 = new Put(Bytes.toBytes("row-t1" + i));
            p1.addColumn(fam3Name, qualName, Bytes.toBytes("val" + i));
            t1.put(p1);
          }
          LOG.debug("Wrote " + NB_ROWS_IN_FAM3 + " rows into family3");
          t1.close();
        } catch (IOException ioe) {
          throw new RuntimeException(ioe);
        }
      }
    };
    t.start();

    table1Desc.addFamily(new HColumnDescriptor(fam3Name));
    // family 2 is MOB enabled
    HColumnDescriptor hcd = new HColumnDescriptor(fam2Name);
    hcd.setMobEnabled(true);
    hcd.setMobThreshold(0L);
    table1Desc.addFamily(hcd);
    HBaseTestingUtility.modifyTableSync(TEST_UTIL.getAdmin(), table1Desc);

    SnapshotTestingUtils.loadData(TEST_UTIL, table1, 50, fam2Name);
    HTable t1 = (HTable) conn.getTable(table1);
    int rows0 = MobSnapshotTestingUtils.countMobRows(t1, fam2Name);

    latch.countDown();
    String backupId =
        backupTables(BackupType.FULL, Lists.newArrayList(table1), BACKUP_REMOTE_ROOT_DIR);
    assertTrue(checkSucceeded(backupId));

    LOG.info("backup complete " + backupId);
    Assert.assertEquals(TEST_UTIL.countRows(t1, famName), NB_ROWS_IN_BATCH);

    t.join();
    Assert.assertEquals(TEST_UTIL.countRows(t1, fam3Name), NB_ROWS_IN_FAM3);
    t1.close();

    TableName[] tablesRestoreFull = new TableName[] { table1 };

    TableName[] tablesMapFull = new TableName[] { table1_restore };

    BackupAdmin client = getBackupAdmin();
    client.restore(BackupUtils.createRestoreRequest(BACKUP_REMOTE_ROOT_DIR, backupId, false,
      tablesRestoreFull, tablesMapFull, false));

    // check tables for full restore
    HBaseAdmin hAdmin = TEST_UTIL.getHBaseAdmin();
    assertTrue(hAdmin.tableExists(table1_restore));

    // #5.2 - checking row count of tables for full restore
    HTable hTable = (HTable) conn.getTable(table1_restore);
    Assert.assertEquals(TEST_UTIL.countRows(hTable, famName), NB_ROWS_IN_BATCH);
    int cnt3 = TEST_UTIL.countRows(hTable, fam3Name);
    Assert.assertTrue(cnt3 >= 0 && cnt3 <= NB_ROWS_IN_FAM3);

    int rows1 = MobSnapshotTestingUtils.countMobRows(t1, fam2Name);
    Assert.assertEquals(rows0, rows1);
    hTable.close();

    hAdmin.close();
  }
}