1 /**
2 *
3 * Licensed to the Apache Software Foundation (ASF) under one
4 * or more contributor license agreements. See the NOTICE file
5 * distributed with this work for additional information
6 * regarding copyright ownership. The ASF licenses this file
7 * to you under the Apache License, Version 2.0 (the
8 * "License"); you may not use this file except in compliance
9 * with the License. You may obtain a copy of the License at
10 *
11 * http://www.apache.org/licenses/LICENSE-2.0
12 *
13 * Unless required by applicable law or agreed to in writing, software
14 * distributed under the License is distributed on an "AS IS" BASIS,
15 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
16 * See the License for the specific language governing permissions and
17 * limitations under the License.
18 */
19 package org.apache.hadoop.hbase.mapred;
20
21 import org.apache.hadoop.hbase.classification.InterfaceAudience;
22 import org.apache.hadoop.hbase.classification.InterfaceStability;
23 import org.apache.hadoop.hbase.client.Result;
24 import org.apache.hadoop.hbase.io.ImmutableBytesWritable;
25 import org.apache.hadoop.io.WritableComparable;
26 import org.apache.hadoop.mapred.Mapper;
27
28 /**
29 * Scan an HBase table to sort by a specified sort column.
30 * If the column does not exist, the record is not passed to Reduce.
31 *
32 * @param <K> WritableComparable key class
33 * @param <V> Writable value class
34 */
35 @InterfaceAudience.Public
36 @InterfaceStability.Stable
37 public interface TableMap<K extends WritableComparable<? super K>, V>
38 extends Mapper<ImmutableBytesWritable, Result, K, V> {
39
40 }