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;
20
21
22 /**
23 * A compatibility shim layer for interacting with different versions of Hadoop.
24 */
25 //NOTE: we can move this under src/main if main code wants to use this shim layer
26 public interface HadoopShims {
27
28 /**
29 * Returns a TaskAttemptContext instance created from the given parameters.
30 * @param job an instance of o.a.h.mapreduce.Job
31 * @param taskId an identifier for the task attempt id. Should be parsable by
32 * TaskAttemptId.forName()
33 * @return a concrete TaskAttemptContext instance of o.a.h.mapreduce.TaskAttemptContext
34 */
35 <T,J> T createTestTaskAttemptContext(final J job, final String taskId);
36
37 }