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1   /**
2    * Copyright The Apache Software Foundation
3    *
4    * Licensed to the Apache Software Foundation (ASF) under one
5    * or more contributor license agreements.  See the NOTICE file
6    * distributed with this work for additional information
7    * regarding copyright ownership.  The ASF licenses this file
8    * to you under the Apache License, Version 2.0 (the
9    * "License"); you may not use this file except in compliance
10   * with the License.  You may obtain a copy of the License at
11   *
12   *     http://www.apache.org/licenses/LICENSE-2.0
13   *
14   * Unless required by applicable law or agreed to in writing, software
15   * distributed under the License is distributed on an "AS IS" BASIS,
16   * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
17   * See the License for the specific language governing permissions and
18   * limitations under the License.
19   */
20  
21  package org.apache.hadoop.hbase.client;
22  
23  
24  import org.apache.hadoop.hbase.MasterAdminProtocol;
25  
26  import java.io.Closeable;
27  
28  /**
29   * A KeepAlive connection is not physically closed immediately after the close,
30   *  but rather kept alive for a few minutes. It makes sense only if it's shared.
31   *
32   * This interface is used by a dynamic proxy. It allows to have a #close
33   *  function in a master client.
34   *
35   * This class is intended to be used internally by HBase classes that need to
36   * speak the MasterAdminProtocol; but not by * final user code. Hence it's
37   * package protected.
38   */
39  interface MasterAdminKeepAliveConnection extends MasterAdminProtocol, Closeable {
40  
41    @Override
42    public void close();
43  }
44