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.master;
20
21 import org.apache.hadoop.hbase.metrics.BaseSource;
22
23 /**
24 * Interface that classes that expose metrics about the master will implement.
25 */
26 public interface MetricsMasterProcSource extends BaseSource {
27
28 /**
29 * The name of the metrics
30 */
31 String METRICS_NAME = "Procedure";
32
33 /**
34 * The context metrics will be under.
35 */
36 String METRICS_CONTEXT = "master";
37
38 /**
39 * The name of the metrics context that metrics will be under in jmx
40 */
41 String METRICS_JMX_CONTEXT = "Master,sub=" + METRICS_NAME;
42
43 /**
44 * Description
45 */
46 String METRICS_DESCRIPTION = "Metrics about HBase master procedure";
47
48 // Strings used for exporting to metrics system.
49 String NUM_MASTER_WALS_NAME = "numMasterWALs";
50
51 String NUM_MASTER_WALS_DESC = "Number of master WAL files";
52
53 }