/**
    * 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.regionserver;
  
  import static org.apache.hadoop.hbase.HBaseTestingUtility.fam1;
  import static org.junit.Assert.assertEquals;
  import static org.junit.Assert.assertTrue;
  
  import java.io.IOException;
  
  import org.apache.hadoop.hbase.HBaseTestingUtility;
  import org.apache.hadoop.hbase.HColumnDescriptor;
  import org.apache.hadoop.hbase.HTableDescriptor;
  import org.apache.hadoop.hbase.MiniHBaseCluster;
  import org.apache.hadoop.hbase.TableName;
  import org.apache.hadoop.hbase.client.Admin;
  import org.apache.hadoop.hbase.client.Connection;
  import org.apache.hadoop.hbase.client.ConnectionFactory;
  import org.apache.hadoop.hbase.client.Durability;
  import org.apache.hadoop.hbase.client.Get;
  import org.apache.hadoop.hbase.client.Put;
  import org.apache.hadoop.hbase.client.Result;
  import org.apache.hadoop.hbase.client.RowMutations;
  import org.apache.hadoop.hbase.client.Table;
  import org.apache.hadoop.hbase.testclassification.MediumTests;
  import org.apache.hadoop.hbase.util.Bytes;
  import org.apache.hadoop.hbase.util.EnvironmentEdgeManager;
  import org.junit.After;
  import org.junit.AfterClass;
  import org.junit.Before;
  import org.junit.BeforeClass;
  import org.junit.Test;
  import org.junit.experimental.categories.Category;
  
  @Category(MediumTests.class)
  public class TestMutateRowsRecovery {
    private MiniHBaseCluster cluster = null;
    private Connection connection = null;
    private static final int NB_SERVERS = 3;
  
    static final byte[] qual1 = Bytes.toBytes("qual1");
    static final byte[] qual2 = Bytes.toBytes("qual2");
    static final byte[] value1 = Bytes.toBytes("value1");
    static final byte[] value2 = Bytes.toBytes("value2");
    static final byte[] row1 = Bytes.toBytes("rowA");
    static final byte[] row2 = Bytes.toBytes("rowB");
  
    static final HBaseTestingUtility TESTING_UTIL = new HBaseTestingUtility();
  
    @BeforeClass
    public static void before() throws Exception {
      TESTING_UTIL.startMiniCluster(NB_SERVERS);
    }
  
    @AfterClass
    public static void after() throws Exception {
      TESTING_UTIL.shutdownMiniCluster();
    }
  
    @Before
    public void setup() throws IOException {
      TESTING_UTIL.ensureSomeNonStoppedRegionServersAvailable(NB_SERVERS);
      this.connection = ConnectionFactory.createConnection(TESTING_UTIL.getConfiguration());
      this.cluster = TESTING_UTIL.getMiniHBaseCluster();
    }
  
    @After
    public void tearDown() throws IOException {
      if (this.connection != null) {
        this.connection.close();
      }
    }
  
    @Test
    public void MutateRowsAndCheckPostKill() throws IOException, InterruptedException {
      final TableName tableName = TableName.valueOf("test");
      Admin admin = null;
      Table hTable = null;
      try {
        admin = connection.getAdmin();
        hTable = connection.getTable(tableName);
        HTableDescriptor desc = new HTableDescriptor(tableName);
        desc.addFamily(new HColumnDescriptor(fam1));
        admin.createTable(desc);
 
       // Add a multi
       RowMutations rm = new RowMutations(row1);
       Put p1 = new Put(row1);
       p1.addColumn(fam1, qual1, value1);
       p1.setDurability(Durability.SYNC_WAL);
       rm.add(p1);
       hTable.mutateRow(rm);
 
       // Add a put
       Put p2 = new Put(row1);
       p2.addColumn(fam1, qual2, value2);
       p2.setDurability(Durability.SYNC_WAL);
       hTable.put(p2);
 
       HRegionServer rs1 = TESTING_UTIL.getRSForFirstRegionInTable(tableName);
       long now = EnvironmentEdgeManager.currentTime();
       // Send the RS Load to ensure correct lastflushedseqid for stores
       rs1.tryRegionServerReport(now - 30000, now);
       // Kill the RS to trigger wal replay
       cluster.killRegionServer(rs1.serverName);
 
       // Ensure correct data exists
       Get g1 = new Get(row1);
       Result result = hTable.get(g1);
       assertTrue(result.getValue(fam1, qual1) != null);
       assertEquals(0, Bytes.compareTo(result.getValue(fam1, qual1), value1));
       assertTrue(result.getValue(fam1, qual2) != null);
       assertEquals(0, Bytes.compareTo(result.getValue(fam1, qual2), value2));
     } finally {
       if (admin != null) {
         admin.close();
       }
       if (hTable != null) {
         hTable.close();
       }
     }
   }
 }