/**
* Licensed to the Apache Software Foundation (ASF) under one
* or more contributor license agreements. See the NOTICE file
* distributed with this work for additional information
* regarding copyright ownership. The ASF licenses this file
* to you under the Apache License, Version 2.0 (the
* "License"); you may not use this file except in compliance
* with the License. You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
package org.apache.hadoop.hbase.metrics;
/**
* Interface for sources that will export JvmPauseMonitor metrics
*/
public interface JvmPauseMonitorSource {
String INFO_THRESHOLD_COUNT_KEY = "pauseInfoThresholdExceeded";
String INFO_THRESHOLD_COUNT_DESC = "Count of INFO level pause threshold alerts";
String WARN_THRESHOLD_COUNT_KEY = "pauseWarnThresholdExceeded";
String WARN_THRESHOLD_COUNT_DESC = "Count of WARN level pause threshold alerts";
String PAUSE_TIME_WITH_GC_KEY = "pauseTimeWithGc";
String PAUSE_TIME_WITH_GC_DESC = "Histogram for excessive pause times with GC activity detected";
String PAUSE_TIME_WITHOUT_GC_KEY = "pauseTimeWithoutGc";
String PAUSE_TIME_WITHOUT_GC_DESC =
"Histogram for excessive pause times without GC activity detected";
/**
* Increment the INFO level threshold exceeded count
* @param count the count
*/
void incInfoThresholdExceeded(int count);
/**
* Increment the WARN level threshold exceeded count
* @param count the count
*/
void incWarnThresholdExceeded(int count);
/**
* Update the pause time histogram where GC activity was detected.
*
* @param t time it took
*/
void updatePauseTimeWithGc(long t);
/**
* Update the pause time histogram where GC activity was not detected.
*
* @param t time it took
*/
void updatePauseTimeWithoutGc(long t);
}