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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  package org.apache.hadoop.hbase;
20  
21  import org.apache.hadoop.classification.InterfaceAudience;
22  import org.apache.hadoop.classification.InterfaceStability;
23  
24  
25  /**
26   * Thrown if a region server is passed an unknown scanner id.
27   * Usually means the client has take too long between checkins and so the
28   * scanner lease on the serverside has expired OR the serverside is closing
29   * down and has cancelled all leases.
30   */
31  @InterfaceAudience.Public
32  @InterfaceStability.Stable
33  public class UnknownScannerException extends DoNotRetryIOException {
34    private static final long serialVersionUID = 993179627856392526L;
35  
36    /** constructor */
37    public UnknownScannerException() {
38      super();
39    }
40  
41    /**
42     * Constructor
43     * @param s message
44     */
45    public UnknownScannerException(String s) {
46      super(s);
47    }
48  }