Blazer-007 commented on code in PR #4087: URL: https://github.com/apache/gobblin/pull/4087#discussion_r1891127516
########## gobblin-temporal/src/main/java/org/apache/gobblin/temporal/ddm/activity/impl/RecommendScalingForWorkUnitsLinearHeuristicImpl.java: ########## @@ -0,0 +1,81 @@ +/* + * 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.gobblin.temporal.ddm.activity.impl; + +import lombok.extern.slf4j.Slf4j; + +import org.apache.gobblin.runtime.JobState; +import org.apache.gobblin.temporal.GobblinTemporalConfigurationKeys; +import org.apache.gobblin.temporal.ddm.work.TimeBudget; +import org.apache.gobblin.temporal.ddm.work.WorkUnitsSizeSummary; +import org.apache.gobblin.temporal.ddm.worker.WorkFulfillmentWorker; + + +/** + * Simple config-driven linear relationship between `remainingWork` and the resulting `setPoint` + * + * + * TODO: describe algo!!!!! + */ +@Slf4j +public class RecommendScalingForWorkUnitsLinearHeuristicImpl extends AbstractRecommendScalingForWorkUnitsImpl { + + public static final String AMORTIZED_NUM_BYTES_PER_MINUTE = GobblinTemporalConfigurationKeys.PREFIX + "dynamic.scaling.reference.numBytesPerMinute"; + public static final long DEFAULT_AMORTIZED_NUM_BYTES_PER_MINUTE = 10 * 1000L * 1000L * 60L; // 10MB/sec + + @Override + protected int calcDerivationSetPoint(WorkUnitsSizeSummary remainingWork, String sourceClass, TimeBudget timeBudget, JobState jobState) { + // for simplicity, for now, consider only top-level work units (aka. `MultiWorkUnit`s - MWUs) + long numMWUs = remainingWork.getTopLevelWorkUnitsCount(); + double meanBytesPerMWU = remainingWork.getTopLevelWorkUnitsMeanSize(); + int numSimultaneousMWUsPerContainer = calcPerContainerWUCapacity(jobState); // (a worker-thread is a slot for top-level (MWUs) - not constituent sub-WUs) + long bytesPerMinuteProcRate = calcAmortizedBytesPerMinute(jobState); + log.info("Calculating auto-scaling (for {} remaining work units within {}) using: bytesPerMinuteProcRate = {}; meanBytesPerMWU = {}", + numMWUs, timeBudget, bytesPerMinuteProcRate, meanBytesPerMWU); + + // calc how many container*minutes to process all MWUs, based on mean MWU size + double minutesProcTimeForMeanMWU = meanBytesPerMWU / bytesPerMinuteProcRate; + double meanMWUsThroughputPerContainerMinute = numSimultaneousMWUsPerContainer / minutesProcTimeForMeanMWU; + double estContainerMinutesForAllMWUs = numMWUs / meanMWUsThroughputPerContainerMinute; + + long targetNumMinutes = timeBudget.getMaxDurationDesiredMinutes(); + // TODO: take into account `timeBudget.getPermittedOverageMinutes()` - e.g. to decide whether to use `Math.ceil` vs. `Math.floor` Review Comment: yes that is much better, thanks for updating. -- This is an automated message from the Apache Git Service. To respond to the message, please log on to GitHub and use the URL above to go to the specific comment. To unsubscribe, e-mail: dev-unsubscr...@gobblin.apache.org For queries about this service, please contact Infrastructure at: us...@infra.apache.org
