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Fix RemoteTaskRunner's auto-scaling (apache#3768)
* Rename ResourceManagementStrategy to ProvisioningStrategy, similarly for related classes. Make ProvisioningService non-global, created per RemoteTaskRunner instead. Add OverlordBlinkLeadershipTest. * Fix RemoteTaskRunnerFactoryTest.testExecNotSharedBetweenRunners() * Small fix * Make SimpleProvisioner and PendingProvisioner more similar in details * Fix executor name * Style fixes * Use LifecycleLock in RemoteTaskRunner
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131 changes: 131 additions & 0 deletions
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.../main/java/io/druid/indexing/overlord/autoscaling/AbstractWorkerProvisioningStrategy.java
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| /* | ||
| * Licensed to Metamarkets Group Inc. (Metamarkets) under one | ||
| * or more contributor license agreements. See the NOTICE file | ||
| * distributed with this work for additional information | ||
| * regarding copyright ownership. Metamarkets 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. | ||
| */ | ||
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| package io.druid.indexing.overlord.autoscaling; | ||
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| import com.google.common.base.Supplier; | ||
| import com.metamx.emitter.EmittingLogger; | ||
| import io.druid.indexing.overlord.WorkerTaskRunner; | ||
| import io.druid.java.util.common.granularity.PeriodGranularity; | ||
| import org.joda.time.DateTime; | ||
| import org.joda.time.Duration; | ||
| import org.joda.time.Period; | ||
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| import java.util.concurrent.ScheduledExecutorService; | ||
| import java.util.concurrent.TimeUnit; | ||
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| /** | ||
| */ | ||
| public abstract class AbstractWorkerProvisioningStrategy implements ProvisioningStrategy<WorkerTaskRunner> | ||
| { | ||
| private static final EmittingLogger log = new EmittingLogger(AbstractWorkerProvisioningStrategy.class); | ||
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| private final ProvisioningSchedulerConfig provisioningSchedulerConfig; | ||
| private final Supplier<ScheduledExecutorService> execFactory; | ||
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| AbstractWorkerProvisioningStrategy( | ||
| ProvisioningSchedulerConfig provisioningSchedulerConfig, | ||
| Supplier<ScheduledExecutorService> execFactory | ||
| ) | ||
| { | ||
| this.provisioningSchedulerConfig = provisioningSchedulerConfig; | ||
| this.execFactory = execFactory; | ||
| } | ||
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| @Override | ||
| public ProvisioningService makeProvisioningService(WorkerTaskRunner runner) | ||
| { | ||
| return new WorkerProvisioningService(makeProvisioner(runner)); | ||
| } | ||
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| final class WorkerProvisioningService implements ProvisioningService | ||
| { | ||
| private final ScheduledExecutorService exec = execFactory.get(); | ||
| private final Provisioner provisioner; | ||
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| WorkerProvisioningService(final Provisioner provisioner) | ||
| { | ||
| log.info("Started Resource Management Scheduler"); | ||
| this.provisioner = provisioner; | ||
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| long rate = provisioningSchedulerConfig.getProvisionPeriod().toStandardDuration().getMillis(); | ||
| exec.scheduleAtFixedRate( | ||
| new Runnable() | ||
| { | ||
| @Override | ||
| public void run() | ||
| { | ||
| try { | ||
| provisioner.doProvision(); | ||
| } | ||
| catch (Exception e) { | ||
| log.error(e, "Uncaught exception."); | ||
| } | ||
| } | ||
| }, | ||
| rate, | ||
| rate, | ||
| TimeUnit.MILLISECONDS | ||
| ); | ||
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| // Schedule termination of worker nodes periodically | ||
| Period period = provisioningSchedulerConfig.getTerminatePeriod(); | ||
| PeriodGranularity granularity = new PeriodGranularity( | ||
| period, | ||
| provisioningSchedulerConfig.getOriginTime(), | ||
| null | ||
| ); | ||
| final long startTime = granularity.bucketEnd(new DateTime()).getMillis(); | ||
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| exec.scheduleAtFixedRate( | ||
| new Runnable() | ||
| { | ||
| @Override | ||
| public void run() | ||
| { | ||
| try { | ||
| provisioner.doTerminate(); | ||
| } | ||
| catch (Exception e) { | ||
| log.error(e, "Uncaught exception."); | ||
| } | ||
| } | ||
| }, | ||
| new Duration(System.currentTimeMillis(), startTime).getMillis(), | ||
| provisioningSchedulerConfig.getTerminatePeriod().toStandardDuration().getMillis(), | ||
| TimeUnit.MILLISECONDS | ||
| ); | ||
| } | ||
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| @Override | ||
| public ScalingStats getStats() | ||
| { | ||
| return provisioner.getStats(); | ||
| } | ||
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| @Override | ||
| public void close() | ||
| { | ||
| log.info("Stopping Resource Management Scheduler"); | ||
| exec.shutdown(); | ||
| } | ||
| } | ||
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| protected abstract Provisioner makeProvisioner(WorkerTaskRunner runner); | ||
| } |
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