View Javadoc

1   /**
2    * Licensed to the Apache Software Foundation (ASF) under one
3    * or more contributor license agreements.  See the NOTICE file
4    * distributed with this work for additional information
5    * regarding copyright ownership.  The ASF licenses this file
6    * to you under the Apache License, Version 2.0 (the
7    * "License"); you may not use this file except in compliance
8    * with the License.  You may obtain a copy of the License at
9    *
10   *     http://www.apache.org/licenses/LICENSE-2.0
11   *
12   * Unless required by applicable law or agreed to in writing, software
13   * distributed under the License is distributed on an "AS IS" BASIS,
14   * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
15   * See the License for the specific language governing permissions and
16   * limitations under the License.
17   */
18  
19  package org.apache.hadoop.hbase.regionserver.wal;
20  
21  import java.io.IOException;
22  import java.util.List;
23  import java.util.UUID;
24  
25  import org.apache.hadoop.hbase.TableName;
26  import org.apache.hadoop.hbase.classification.InterfaceAudience;
27  import org.apache.hadoop.hbase.regionserver.MultiVersionConcurrencyControl;
28  
29  /**
30   * An HLogKey specific to WalEdits coming from replay.
31   */
32  @InterfaceAudience.Private
33  public class ReplayHLogKey extends HLogKey {
34  
35    public ReplayHLogKey(final byte [] encodedRegionName, final TableName tablename,
36        final long now, List<UUID> clusterIds, long nonceGroup, long nonce,
37        MultiVersionConcurrencyControl mvcc) {
38      super(encodedRegionName, tablename, now, clusterIds, nonceGroup, nonce, mvcc);
39    }
40  
41    public ReplayHLogKey(final byte [] encodedRegionName, final TableName tablename,
42        long logSeqNum, final long now, List<UUID> clusterIds, long nonceGroup, long nonce,
43        MultiVersionConcurrencyControl mvcc) {
44      super(encodedRegionName, tablename, logSeqNum, now, clusterIds, nonceGroup, nonce, mvcc);
45    }
46  
47    /**
48     * Returns the original sequence id
49     * @return long the new assigned sequence number
50     */
51    @Override
52    public long getSequenceId() throws IOException {
53      return this.getOrigLogSeqNum();
54    }
55  }