org.apache.hadoop.hbase.client.backoff.ServerStatistics Maven / Gradle / Ivy
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* 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.client.backoff;
import java.util.Map;
import java.util.TreeMap;
import org.apache.hadoop.hbase.client.RegionLoadStats;
import org.apache.hadoop.hbase.util.Bytes;
import org.apache.yetus.audience.InterfaceAudience;
/**
* Track the statistics for a single region
*/
@InterfaceAudience.Private
public class ServerStatistics {
private Map stats = new TreeMap<>(Bytes.BYTES_COMPARATOR);
/**
* Good enough attempt. Last writer wins. It doesn't really matter which one gets to update, as
* something gets set
*/
public void update(byte[] region, RegionLoadStats currentStats) {
RegionStatistics regionStat = this.stats.get(region);
if (regionStat == null) {
regionStat = new RegionStatistics();
this.stats.put(region, regionStat);
}
regionStat.update(currentStats);
}
@InterfaceAudience.Private
public RegionStatistics getStatsForRegion(byte[] regionName) {
return stats.get(regionName);
}
public static class RegionStatistics {
private int memstoreLoad = 0;
private int heapOccupancy = 0;
private int compactionPressure = 0;
public void update(RegionLoadStats currentStats) {
this.memstoreLoad = currentStats.getMemStoreLoad();
this.heapOccupancy = currentStats.getHeapOccupancy();
this.compactionPressure = currentStats.getCompactionPressure();
}
public int getMemStoreLoadPercent() {
return this.memstoreLoad;
}
public int getHeapOccupancyPercent() {
return this.heapOccupancy;
}
public int getCompactionPressure() {
return compactionPressure;
}
}
}