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 * This interface will be implemented to allow region server to push table metrics into
23 * MetricsRegionAggregateSource that will in turn push data to the Hadoop metrics system.
24 */
25 public interface MetricsTableSource extends Comparable<MetricsTableSource> {
26
27 String READ_REQUEST_COUNT = "readRequestCount";
28 String READ_REQUEST_COUNT_DESC = "Number fo read requests";
29 String WRITE_REQUEST_COUNT = "writeRequestCount";
30 String WRITE_REQUEST_COUNT_DESC = "Number fo write requests";
31 String TOTAL_REQUEST_COUNT = "totalRequestCount";
32 String TOTAL_REQUEST_COUNT_DESC = "Number fo total requests";
33 String MEMSTORE_SIZE = "memstoreSize";
34 String MEMSTORE_SIZE_DESC = "The size of memory stores";
35 String STORE_FILE_SIZE = "storeFileSize";
36 String STORE_FILE_SIZE_DESC = "The size of store files size";
37 String TABLE_SIZE = "tableSize";
38 String TABLE_SIZE_DESC = "Total size of the table in the region server";
39
40 String getTableName();
41
42 /**
43 * Close the table's metrics as all the region are closing.
44 */
45 void close();
46
47 /**
48 * Get the aggregate source to which this reports.
49 */
50 MetricsTableAggregateSource getAggregateSource();
51
52 }