1 /*
2 * Licensed to the Apache Software Foundation (ASF) under one or more
3 * contributor license agreements. See the NOTICE file distributed with
4 * this work for additional information regarding copyright ownership.
5 * The ASF licenses this file to you under the Apache License, Version 2.0
6 * (the "License"); you may not use this file except in compliance with
7 * the License. You may obtain a copy of the License at
8 *
9 * http://www.apache.org/licenses/LICENSE-2.0
10 *
11 * Unless required by applicable law or agreed to in writing, software
12 * distributed under the License is distributed on an "AS IS" BASIS,
13 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
14 * See the License for the specific language governing permissions and
15 * limitations under the License.
16 */
17 package org.apache.hadoop.hbase.regionserver;
18
19 import org.apache.hadoop.hbase.TableName;
20 import org.apache.hadoop.hbase.classification.InterfaceAudience;
21
22 /**
23 * Query Per Second for each table in a RegionServer.
24 */
25 @InterfaceAudience.Private
26 public interface MetricsTableQueryMeter {
27
28 String TABLE_READ_QUERY_PER_SECOND = "tableReadQueryPerSecond";
29 String TABLE_WRITE_QUERY_PER_SECOND = "tableWriteQueryPerSecond";
30
31 /**
32 * Update table read QPS
33 * @param tableName The table the metric is for
34 * @param count Number of occurrences to record
35 */
36 void updateTableReadQueryMeter(TableName tableName, long count);
37
38 /**
39 * Update table read QPS
40 * @param tableName The table the metric is for
41 */
42 void updateTableReadQueryMeter(TableName tableName);
43
44 /**
45 * Update table write QPS
46 * @param tableName The table the metric is for
47 * @param count Number of occurrences to record
48 */
49 void updateTableWriteQueryMeter(TableName tableName, long count);
50
51 /**
52 * Update table write QPS
53 * @param tableName The table the metric is for
54 */
55 void updateTableWriteQueryMeter(TableName tableName);
56 }