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1   /*
2    *
3    * Licensed to the Apache Software Foundation (ASF) under one
4    * or more contributor license agreements.  See the NOTICE file
5    * distributed with this work for additional information
6    * regarding copyright ownership.  The ASF licenses this file
7    * to you under the Apache License, Version 2.0 (the
8    * "License"); you may not use this file except in compliance
9    * with the License.  You may obtain a copy of the License at
10   *
11   *     http://www.apache.org/licenses/LICENSE-2.0
12   *
13   * Unless required by applicable law or agreed to in writing, software
14   * distributed under the License is distributed on an "AS IS" BASIS,
15   * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
16   * See the License for the specific language governing permissions and
17   * limitations under the License.
18   */
19  
20  package org.apache.hadoop.hbase.util;
21  
22  import org.apache.hadoop.classification.InterfaceAudience;
23  import org.apache.hadoop.conf.Configuration;
24  import org.apache.hadoop.hbase.HBaseConfiguration;
25  
26  /**
27   * Tool that prints out a configuration.
28   * Pass the configuration key on the command-line.
29   */
30  @InterfaceAudience.Private
31  public class HBaseConfTool {
32    public static void main(String args[]) {
33      if (args.length < 1) {
34        System.err.println("Usage: HBaseConfTool <CONFIGURATION_KEY>");
35        System.exit(1);
36        return;
37      }
38  
39      Configuration conf = HBaseConfiguration.create();
40      System.out.println(conf.get(args[0]));
41    }
42  }