001/**
002 * Licensed to the Apache Software Foundation (ASF) under one
003 * or more contributor license agreements.  See the NOTICE file
004 * distributed with this work for additional information
005 * regarding copyright ownership.  The ASF licenses this file
006 * to you under the Apache License, Version 2.0 (the
007 * "License"); you may not use this file except in compliance
008 * with the License.  You may obtain a copy of the License at
009 *
010 *     http://www.apache.org/licenses/LICENSE-2.0
011 *
012 * Unless required by applicable law or agreed to in writing, software
013 * distributed under the License is distributed on an "AS IS" BASIS,
014 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
015 * See the License for the specific language governing permissions and
016 * limitations under the License.
017 */
018
019package org.apache.hadoop.hbase.master.balancer;
020
021import org.apache.hadoop.hbase.metrics.BaseSource;
022import org.apache.yetus.audience.InterfaceAudience;
023
024@InterfaceAudience.Private
025public interface MetricsBalancerSource extends BaseSource  {
026
027  /**
028   * The name of the metrics
029   */
030  String METRICS_NAME = "Balancer";
031
032  /**
033   * The context metrics will be under.
034   */
035  String METRICS_CONTEXT = "master";
036
037  /**
038   * The name of the metrics context that metrics will be under in jmx
039   */
040  String METRICS_JMX_CONTEXT = "Master,sub=" + METRICS_NAME;
041
042  String BALANCE_CLUSTER = "balancerCluster";
043  String MISC_INVOATION_COUNT = "miscInvocationCount";
044  String BALANCER_STATUS = "isBalancerActive";
045
046  /**
047   * Description
048   */
049  String METRICS_DESCRIPTION = "Metrics about HBase master balancer";
050
051  void updateBalanceCluster(long time);
052
053  void incrMiscInvocations();
054
055  void updateBalancerStatus(boolean status);
056}