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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.util;
20  
21  import java.io.IOException;
22  
23  import org.apache.hadoop.classification.InterfaceAudience;
24  import org.apache.hadoop.conf.Configuration;
25  import org.apache.hadoop.fs.FileSystem;
26  import org.apache.hadoop.fs.Path;
27  import org.apache.hadoop.fs.permission.FsPermission;
28  import org.apache.commons.logging.Log;
29  import org.apache.commons.logging.LogFactory;
30  
31  /**
32   * <a href="http://www.mapr.com">MapR</a> implementation.
33   */
34  @InterfaceAudience.Private
35  public class FSMapRUtils extends FSUtils {
36    private static final Log LOG = LogFactory.getLog(FSMapRUtils.class);
37    
38    public void recoverFileLease(final FileSystem fs, final Path p,
39        Configuration conf, CancelableProgressable reporter) throws IOException {
40      LOG.info("Recovering file " + p.toString() +
41        " by changing permission to readonly");
42      FsPermission roPerm = new FsPermission((short) 0444);
43      fs.setPermission(p, roPerm);
44    }
45  }