001/**
002 * Licensed to the Apache Software Foundation (ASF) under one
003 * or more contributor license agreements.  See the NOTICE file
004 * distributed with this work for additional information
005 * regarding copyright ownership.  The ASF licenses this file
006 * to you under the Apache License, Version 2.0 (the
007 * "License"); you may not use this file except in compliance
008 * with the License.  You may obtain a copy of the License at
009 *
010 *     http://www.apache.org/licenses/LICENSE-2.0
011 *
012 * Unless required by applicable law or agreed to in writing, software
013 * distributed under the License is distributed on an "AS IS" BASIS,
014 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
015 * See the License for the specific language governing permissions and
016 * limitations under the License.
017 */
018
019package org.apache.hadoop.hbase.mapreduce;
020
021import java.io.IOException;
022
023import org.apache.hadoop.conf.Configuration;
024import org.apache.hadoop.fs.Path;
025import org.apache.hadoop.mapreduce.Cluster;
026import org.apache.hadoop.mapreduce.JobSubmissionFiles;
027import org.apache.yetus.audience.InterfaceAudience;
028import org.apache.yetus.audience.InterfaceStability;
029import org.slf4j.Logger;
030import org.slf4j.LoggerFactory;
031
032/**
033 * Utility methods to interact with a job.
034 */
035@InterfaceAudience.Private
036@InterfaceStability.Evolving
037public abstract class JobUtil {
038  private static final Logger LOG = LoggerFactory.getLogger(JobUtil.class);
039
040  protected JobUtil() {
041    super();
042  }
043
044  /**
045   * Initializes the staging directory and returns the path.
046   *
047   * @param conf system configuration
048   * @return staging directory path
049   * @throws IOException if the ownership on the staging directory is not as expected
050   * @throws InterruptedException if the thread getting the staging directory is interrupted
051   */
052  public static Path getStagingDir(Configuration conf)
053      throws IOException, InterruptedException {
054    return JobSubmissionFiles.getStagingDir(new Cluster(conf), conf);
055  }
056}