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Dr. Elephant Tez Support working patch (linkedin#313)
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109 changes: 109 additions & 0 deletions
109
app/com/linkedin/drelephant/tez/TezMetricsAggregator.java
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| /* | ||
| * | ||
| * Licensed 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 com.linkedin.drelephant.tez; | ||
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| import com.linkedin.drelephant.analysis.*; | ||
| import com.linkedin.drelephant.configurations.aggregator.AggregatorConfigurationData; | ||
| import com.linkedin.drelephant.tez.data.TezApplicationData; | ||
| import org.apache.commons.io.FileUtils; | ||
| import org.apache.log4j.Logger; | ||
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| /** | ||
| * Aggregates task level metrics to application | ||
| */ | ||
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| public class TezMetricsAggregator implements HadoopMetricsAggregator { | ||
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| private static final Logger logger = Logger.getLogger(TezMetricsAggregator.class); | ||
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| private static final String TEZ_CONTAINER_CONFIG = "hive.tez.container.size"; | ||
| private static final String MAP_CONTAINER_CONFIG = "mapreduce.map.memory.mb"; | ||
| private static final String REDUCER_CONTAINER_CONFIG = "mapreduce.reduce.memory.mb"; | ||
| private static final String REDUCER_SLOW_START_CONFIG = "mapreduce.job.reduce.slowstart.completedmaps"; | ||
| private static final long CONTAINER_MEMORY_DEFAULT_BYTES = 2048L * FileUtils.ONE_MB; | ||
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| private HadoopAggregatedData _hadoopAggregatedData = null; | ||
| private TezTaskLevelAggregatedMetrics _mapTasks; | ||
| private TezTaskLevelAggregatedMetrics _reduceTasks; | ||
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| private AggregatorConfigurationData _aggregatorConfigurationData; | ||
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| public TezMetricsAggregator(AggregatorConfigurationData _aggregatorConfigurationData) { | ||
| this._aggregatorConfigurationData = _aggregatorConfigurationData; | ||
| _hadoopAggregatedData = new HadoopAggregatedData(); | ||
| } | ||
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| @Override | ||
| public void aggregate(HadoopApplicationData hadoopData) { | ||
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| TezApplicationData data = (TezApplicationData) hadoopData; | ||
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| long mapTaskContainerSize = getMapContainerSize(data); | ||
| long reduceTaskContainerSize = getReducerContainerSize(data); | ||
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| int reduceTaskSlowStartPercentage = | ||
| (int) (Double.parseDouble(data.getConf().getProperty(REDUCER_SLOW_START_CONFIG)) * 100); | ||
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| //overwrite reduceTaskSlowStartPercentage to 100%. TODO: make use of the slow start percent | ||
| reduceTaskSlowStartPercentage = 100; | ||
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| _mapTasks = new TezTaskLevelAggregatedMetrics(data.getMapTaskData(), mapTaskContainerSize, data.getStartTime()); | ||
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| long reduceIdealStartTime = _mapTasks.getNthPercentileFinishTime(reduceTaskSlowStartPercentage); | ||
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| // Mappers list is empty | ||
| if(reduceIdealStartTime == -1) { | ||
| // ideal start time for reducer is infinite since it cannot start | ||
| reduceIdealStartTime = Long.MAX_VALUE; | ||
| } | ||
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| _reduceTasks = new TezTaskLevelAggregatedMetrics(data.getReduceTaskData(), reduceTaskContainerSize, reduceIdealStartTime); | ||
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| _hadoopAggregatedData.setResourceUsed(_mapTasks.getResourceUsed() + _reduceTasks.getResourceUsed()); | ||
| _hadoopAggregatedData.setTotalDelay(_mapTasks.getDelay() + _reduceTasks.getDelay()); | ||
| _hadoopAggregatedData.setResourceWasted(_mapTasks.getResourceWasted() + _reduceTasks.getResourceWasted()); | ||
| } | ||
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| @Override | ||
| public HadoopAggregatedData getResult() { | ||
| return _hadoopAggregatedData; | ||
| } | ||
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| private long getMapContainerSize(HadoopApplicationData data) { | ||
| try { | ||
| long mapContainerSize = Long.parseLong(data.getConf().getProperty(TEZ_CONTAINER_CONFIG)); | ||
| if (mapContainerSize > 0) | ||
| return mapContainerSize; | ||
| else | ||
| return Long.parseLong(data.getConf().getProperty(MAP_CONTAINER_CONFIG)); | ||
| } catch ( NumberFormatException ex) { | ||
| return CONTAINER_MEMORY_DEFAULT_BYTES; | ||
| } | ||
| } | ||
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| private long getReducerContainerSize(HadoopApplicationData data) { | ||
| try { | ||
| long reducerContainerSize = Long.parseLong(data.getConf().getProperty(TEZ_CONTAINER_CONFIG)); | ||
| if (reducerContainerSize > 0) | ||
| return reducerContainerSize; | ||
| else | ||
| return Long.parseLong(data.getConf().getProperty(REDUCER_CONTAINER_CONFIG)); | ||
| } catch ( NumberFormatException ex) { | ||
| return CONTAINER_MEMORY_DEFAULT_BYTES; | ||
| } | ||
| } | ||
| } |
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