| /** |
| * 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.yarn.server.timelineservice.collector; |
| |
| import com.google.common.util.concurrent.ThreadFactoryBuilder; |
| import org.apache.hadoop.classification.InterfaceAudience.Private; |
| import org.apache.hadoop.classification.InterfaceStability.Unstable; |
| import org.apache.hadoop.yarn.api.records.ApplicationId; |
| import org.apache.hadoop.yarn.api.records.timelineservice.TimelineEntities; |
| import org.apache.hadoop.yarn.api.records.timelineservice.TimelineEntity; |
| import org.apache.hadoop.yarn.api.records.timelineservice.TimelineEntityType; |
| import org.slf4j.Logger; |
| import org.slf4j.LoggerFactory; |
| import org.apache.hadoop.conf.Configuration; |
| |
| import java.util.HashSet; |
| import java.util.Map; |
| import java.util.Set; |
| import java.util.concurrent.ScheduledThreadPoolExecutor; |
| import java.util.concurrent.TimeUnit; |
| |
| /** |
| * Service that handles aggregations for applications |
| * and makes use of {@link AppLevelTimelineCollector} class for |
| * writes to Timeline Service. |
| * |
| * App-related lifecycle management is handled by this service. |
| */ |
| @Private |
| @Unstable |
| public class AppLevelTimelineCollectorWithAgg |
| extends AppLevelTimelineCollector { |
| private static final Logger LOG = |
| LoggerFactory.getLogger(TimelineCollector.class); |
| |
| private final static int AGGREGATION_EXECUTOR_NUM_THREADS = 1; |
| private final static int AGGREGATION_EXECUTOR_EXEC_INTERVAL_SECS = 15; |
| private static Set<String> entityTypesSkipAggregation |
| = initializeSkipSet(); |
| |
| private ScheduledThreadPoolExecutor appAggregationExecutor; |
| private AppLevelAggregator appAggregator; |
| |
| public AppLevelTimelineCollectorWithAgg(ApplicationId appId, String user) { |
| super(appId, user); |
| } |
| |
| private static Set<String> initializeSkipSet() { |
| Set<String> result = new HashSet<>(); |
| result.add(TimelineEntityType.YARN_APPLICATION.toString()); |
| result.add(TimelineEntityType.YARN_FLOW_RUN.toString()); |
| result.add(TimelineEntityType.YARN_FLOW_ACTIVITY.toString()); |
| return result; |
| } |
| |
| @Override |
| protected void serviceInit(Configuration conf) throws Exception { |
| super.serviceInit(conf); |
| } |
| |
| @Override |
| protected void serviceStart() throws Exception { |
| // Launch the aggregation thread |
| appAggregationExecutor = new ScheduledThreadPoolExecutor( |
| AppLevelTimelineCollectorWithAgg.AGGREGATION_EXECUTOR_NUM_THREADS, |
| new ThreadFactoryBuilder() |
| .setNameFormat("TimelineCollector Aggregation thread #%d") |
| .build()); |
| appAggregator = new AppLevelAggregator(); |
| appAggregationExecutor.scheduleAtFixedRate(appAggregator, |
| AppLevelTimelineCollectorWithAgg. |
| AGGREGATION_EXECUTOR_EXEC_INTERVAL_SECS, |
| AppLevelTimelineCollectorWithAgg. |
| AGGREGATION_EXECUTOR_EXEC_INTERVAL_SECS, |
| TimeUnit.SECONDS); |
| super.serviceStart(); |
| } |
| |
| @Override |
| protected void serviceStop() throws Exception { |
| appAggregationExecutor.shutdown(); |
| if (!appAggregationExecutor.awaitTermination(10, TimeUnit.SECONDS)) { |
| LOG.info("App-level aggregator shutdown timed out, shutdown now. "); |
| appAggregationExecutor.shutdownNow(); |
| } |
| // Perform one round of aggregation after the aggregation executor is done. |
| appAggregator.aggregate(); |
| super.serviceStop(); |
| } |
| |
| @Override |
| protected Set<String> getEntityTypesSkipAggregation() { |
| return entityTypesSkipAggregation; |
| } |
| |
| private class AppLevelAggregator implements Runnable { |
| |
| private void aggregate() { |
| LOG.debug("App-level real-time aggregating"); |
| if (!isReadyToAggregate()) { |
| LOG.warn("App-level collector is not ready, skip aggregation. "); |
| return; |
| } |
| try { |
| TimelineCollectorContext currContext = getTimelineEntityContext(); |
| Map<String, AggregationStatusTable> aggregationGroups |
| = getAggregationGroups(); |
| if (aggregationGroups == null |
| || aggregationGroups.isEmpty()) { |
| LOG.debug("App-level collector is empty, skip aggregation. "); |
| return; |
| } |
| TimelineEntity resultEntity = TimelineCollector.aggregateWithoutGroupId( |
| aggregationGroups, currContext.getAppId(), |
| TimelineEntityType.YARN_APPLICATION.toString()); |
| TimelineEntities entities = new TimelineEntities(); |
| entities.addEntity(resultEntity); |
| putEntitiesAsync(entities, getCurrentUser()); |
| } catch (Exception e) { |
| LOG.error("Error aggregating timeline metrics", e); |
| } |
| LOG.debug("App-level real-time aggregation complete"); |
| } |
| |
| @Override |
| public void run() { |
| aggregate(); |
| } |
| } |
| |
| } |