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 import org.apache.hadoop.mapreduce.Job;
22 import org.apache.hadoop.mapreduce.TaskAttemptID;
23 import org.apache.hadoop.mapreduce.task.TaskAttemptContextImpl;
24
25 /**
26 * Compatibility shim layer implementation for Hadoop-2.
27 */
28 public class HadoopShimsImpl implements HadoopShims {
29
30 /**
31 * Returns a TaskAttemptContext instance created from the given parameters.
32 * @param job an instance of o.a.h.mapreduce.Job
33 * @param taskId an identifier for the task attempt id. Should be parsable by
34 * TaskAttemptId.forName()
35 * @return a concrete TaskAttemptContext instance of o.a.h.mapreduce.TaskAttemptContext
36 */
37 @Override
38 @SuppressWarnings("unchecked")
39 public <T, J> T createTestTaskAttemptContext(J job, String taskId) {
40 Job j = (Job)job;
41 return (T)new TaskAttemptContextImpl(j.getConfiguration(), TaskAttemptID.forName(taskId));
42 }
43 }