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Merge pull request #560 from apache/dynamic_config
[IOTDB-247] Optimize Dynamic Config with ActiveTimeSeriesCounter
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,146 @@ | ||
| /* | ||
| * 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.iotdb.db.conf.adapter; | ||
|
|
||
| import com.clearspring.analytics.stream.cardinality.HyperLogLog; | ||
| import java.util.Map; | ||
| import java.util.concurrent.ConcurrentHashMap; | ||
| import java.util.concurrent.locks.ReentrantReadWriteLock; | ||
| import org.apache.iotdb.db.conf.IoTDBConstant; | ||
| import org.slf4j.Logger; | ||
| import org.slf4j.LoggerFactory; | ||
|
|
||
| public class ActiveTimeSeriesCounter implements IActiveTimeSeriesCounter { | ||
|
|
||
| private static final Logger LOGGER = LoggerFactory.getLogger(ActiveTimeSeriesCounter.class); | ||
| /** | ||
| * Map[StorageGroup, HyperLogLogCounter] | ||
| */ | ||
| private static Map<String, HyperLogLog> storageGroupHllMap = new ConcurrentHashMap<>(); | ||
|
|
||
| /** | ||
| * Map[StorageGroup, ActiveTimeSeriesRatio] | ||
| */ | ||
| private static Map<String, Double> activeRatioMap = new ConcurrentHashMap<>(); | ||
|
|
||
| /** | ||
| * Map[StorageGroup, ActiveTimeSeriesNumber] | ||
| */ | ||
| private static Map<String, Long> activeTimeSeriesNumMap = new ConcurrentHashMap<>(); | ||
|
|
||
| /** | ||
| * LOG2M decide the precision of the HyperLogLog algorithm | ||
| */ | ||
| static final int LOG2M = 13; | ||
|
|
||
| private ReentrantReadWriteLock lock = new ReentrantReadWriteLock(); | ||
|
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| @Override | ||
| public void init(String storageGroup) { | ||
| storageGroupHllMap.put(storageGroup, new HyperLogLog(LOG2M)); | ||
| activeRatioMap.put(storageGroup, 0D); | ||
| activeTimeSeriesNumMap.put(storageGroup, 0L); | ||
| } | ||
|
|
||
| @Override | ||
| public void offer(String storageGroup, String device, String measurement) { | ||
| String path = device + IoTDBConstant.PATH_SEPARATOR + measurement; | ||
| try { | ||
| storageGroupHllMap.get(storageGroup).offer(path); | ||
| } catch (Exception e) { | ||
| storageGroupHllMap.putIfAbsent(storageGroup, new HyperLogLog(LOG2M)); | ||
| storageGroupHllMap.get(storageGroup).offer(path); | ||
| LOGGER.error("Storage group {} registers active time series {} failed", storageGroup, path, | ||
| e); | ||
| } | ||
| } | ||
|
|
||
| @Override | ||
| public void updateActiveRatio(String storageGroup) { | ||
| lock.writeLock().lock(); | ||
| try { | ||
| long activeTimeSeriesNum = storageGroupHllMap.get(storageGroup).cardinality(); | ||
| if (activeTimeSeriesNum != activeTimeSeriesNumMap.get(storageGroup)) { | ||
| // update the active time series number in the newest memtable to be flushed | ||
| activeTimeSeriesNumMap.put(storageGroup, activeTimeSeriesNum); | ||
|
|
||
| double totalActiveTsNum = 0; | ||
| LOGGER.debug("{}: updating active ratio", Thread.currentThread().getName()); | ||
| for (double number : activeTimeSeriesNumMap.values()) { | ||
| totalActiveTsNum += number; | ||
| } | ||
| for (Map.Entry<String, Long> entry : activeTimeSeriesNumMap.entrySet()) { | ||
| double activeRatio = 0; | ||
| if (totalActiveTsNum > 0) { | ||
| activeRatio = entry.getValue() / totalActiveTsNum; | ||
| } | ||
| activeRatioMap.put(entry.getKey(), activeRatio); | ||
| LOGGER.debug("{}: storage group {} has an active ratio: {}", | ||
| Thread.currentThread().getName(), | ||
| entry.getKey(), activeRatio); | ||
| } | ||
| } | ||
| // initialize the HLL counter | ||
| storageGroupHllMap.put(storageGroup, new HyperLogLog(LOG2M)); | ||
| } catch (Exception e) { | ||
| LOGGER.error("Update {} active ratio failed", storageGroup, e); | ||
| } finally { | ||
| lock.writeLock().unlock(); | ||
| } | ||
| } | ||
|
|
||
| @Override | ||
| public double getActiveRatio(String storageGroup) { | ||
| lock.writeLock().lock(); | ||
| double ratio; | ||
| try { | ||
| ratio = activeRatioMap.get(storageGroup); | ||
| } catch (Exception e) { | ||
| ratio = 0; | ||
| LOGGER.error("Get active ratio failed", e); | ||
| } finally { | ||
| lock.writeLock().unlock(); | ||
| } | ||
| return ratio; | ||
| } | ||
|
|
||
| @Override | ||
| public void delete(String storageGroup) { | ||
| storageGroupHllMap.remove(storageGroup); | ||
| activeRatioMap.remove(storageGroup); | ||
| activeTimeSeriesNumMap.remove(storageGroup); | ||
| } | ||
|
|
||
| private static class ActiveTimeSeriesCounterHolder { | ||
| private static final ActiveTimeSeriesCounter INSTANCE = new ActiveTimeSeriesCounter(); | ||
| } | ||
|
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| public static ActiveTimeSeriesCounter getInstance() { | ||
| return ActiveTimeSeriesCounterHolder.INSTANCE; | ||
| } | ||
|
|
||
| /** | ||
| * this method is for test | ||
| */ | ||
| public static void clear() { | ||
| storageGroupHllMap = new ConcurrentHashMap<>(); | ||
| activeRatioMap = new ConcurrentHashMap<>(); | ||
| activeTimeSeriesNumMap = new ConcurrentHashMap<>(); | ||
| } | ||
| } |
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,61 @@ | ||
| /* | ||
| * 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.iotdb.db.conf.adapter; | ||
|
|
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| public interface IActiveTimeSeriesCounter { | ||
|
|
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| /** | ||
| * Initialize the counter by adding a new HyperLogLog counter for the given storage group | ||
| * | ||
| * @param storageGroup the given storage group to be initialized | ||
| */ | ||
| void init(String storageGroup); | ||
|
|
||
| /** | ||
| * Register a time series to the active time series counter | ||
| * | ||
| * @param storageGroup the storage group name of the time series | ||
| * @param device the device name of the time series | ||
| * @param measurement the sensor name of the time series | ||
| */ | ||
| void offer(String storageGroup, String device, String measurement); | ||
|
|
||
| /** | ||
| * Update the ActiveRatioMap | ||
| * | ||
| * @param storageGroup whose counter will be refreshed after the update | ||
| */ | ||
| void updateActiveRatio(String storageGroup); | ||
|
|
||
| /** | ||
| * Get the active time series number proportion of the given storage group | ||
| * | ||
| * @param storageGroup the storage group to be calculated | ||
| * @return the active time series number proportion of the given storage group | ||
| */ | ||
| double getActiveRatio(String storageGroup); | ||
|
|
||
| /** | ||
| * Delete the counter for the given storage group | ||
| * | ||
| * @param storageGroup whose counter will be removed | ||
| */ | ||
| void delete(String storageGroup); | ||
|
|
||
| } |
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