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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.regionserver;
20  
21  
22  /**
23   * Interface of class that will wrap a MetricsTableSource and export numbers so they can be
24   * used in MetricsTableSource
25   */
26  public interface MetricsTableWrapperAggregate {
27  
28    /**
29     * Get the number of read requests that have been issued against this table
30     */
31    long getReadRequestCount(String table);
32  
33    /**
34     * Get the number of write requests that have been issued against this table
35     */
36    long getWriteRequestCount(String table);
37  
38    /**
39     * Get the total number of requests that have been issued against this table
40     */
41    long getTotalRequestsCount(String table);
42  
43    /**
44     * Get the memory store size for this table
45     */
46    long getMemstoreSize(String table);
47  
48    /**
49     * Get the store file size for this table
50     */
51    long getStoreFileSize(String table);
52  
53    /**
54     * Get the table region size for this table
55     */
56    long getTableSize(String table);
57  
58    /**
59     * Get the average region size for this table
60     */
61    long getAvgRegionSize(String table);
62  
63    /**
64     * Get the number of regions hosted on for this table
65     */
66    long getNumRegions(String table);
67  
68    /**
69     * Get the number of stores hosted on for this table
70     */
71    long getNumStores(String table);
72  
73    /**
74     * Get the number of store files hosted for this table
75     */
76    long getNumStoreFiles(String table);
77  
78    /**
79     * @return Max age of store files for this table
80     */
81    long getMaxStoreFileAge(String table);
82  
83    /**
84     * @return Min age of store files for this table
85     */
86    long getMinStoreFileAge(String table);
87  
88    /**
89     *  @return Average age of store files for this table
90     */
91    long getAvgStoreFileAge(String table);
92  
93    /**
94     *  @return Number of reference files for this table
95     */
96    long getNumReferenceFiles(String table);
97  }