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.mapreduce;
20
21 import java.io.IOException;
22
23 import org.apache.commons.logging.Log;
24 import org.apache.commons.logging.LogFactory;
25
26 import org.apache.hadoop.conf.Configuration;
27 import org.apache.hadoop.fs.Path;
28 import org.apache.hadoop.mapred.JobClient;
29 import org.apache.hadoop.mapred.JobConf;
30 import org.apache.hadoop.mapreduce.JobSubmissionFiles;
31 import org.apache.hadoop.hbase.classification.InterfaceAudience;
32 import org.apache.hadoop.hbase.classification.InterfaceStability;
33 /**
34 * Utility methods to interact with a job.
35 */
36 @InterfaceAudience.Private
37 @InterfaceStability.Evolving
38 public abstract class JobUtil {
39 private static final Log LOG = LogFactory.getLog(JobUtil.class);
40
41 protected JobUtil() {
42 super();
43 }
44
45 /**
46 * Initializes the staging directory and returns the path.
47 *
48 * @param conf system configuration
49 * @return staging directory path
50 * @throws IOException
51 * @throws InterruptedException
52 */
53 public static Path getStagingDir(Configuration conf)
54 throws IOException, InterruptedException {
55 JobClient jobClient = new JobClient(new JobConf(conf));
56 return JobSubmissionFiles.getStagingDir(jobClient, conf);
57 }
58 }