hbase-common/src/main/java/org/apache/hadoop/hbase/util/CellHashKey.java

   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 package org.apache.hadoop.hbase.util;
  19
  20 import org.apache.hadoop.hbase.Cell;
  21 import org.apache.hadoop.hbase.HConstants;
  22 import org.apache.hadoop.hbase.KeyValue;
  23 import org.apache.yetus.audience.InterfaceAudience;
  24
  25 /**
  26  * Extracts the byte for the hash calculation from the given cell
  27  */
  28 @InterfaceAudience.Private
  29 public abstract class CellHashKey extends HashKey<Cell> {
  30
  31   protected static final byte[] LATEST_TS = Bytes.toBytes(HConstants.LATEST_TIMESTAMP);
  32   protected static final byte MAX_TYPE = KeyValue.Type.Maximum.getCode();
  33
  34   public CellHashKey(Cell cell) {
  35     super(cell);
  36   }
  37 }