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[FLINK-16438][yarn] Introduce WorkerSpecContainerResourceAdapter for …
…converting between Flink WorkerResourceSpec and Yarn container Resource in YarnResourceManager.
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flink-yarn/src/main/java/org/apache/flink/yarn/WorkerSpecContainerResourceAdapter.java
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| /* | ||
| * 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 | ||
| * | ||
| * https://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 org.apache.flink.yarn; | ||
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| import org.apache.flink.annotation.VisibleForTesting; | ||
| import org.apache.flink.configuration.Configuration; | ||
| import org.apache.flink.runtime.clusterframework.TaskExecutorProcessSpec; | ||
| import org.apache.flink.runtime.clusterframework.TaskExecutorProcessUtils; | ||
| import org.apache.flink.runtime.resourcemanager.WorkerResourceSpec; | ||
| import org.apache.flink.util.MathUtils; | ||
| import org.apache.flink.util.Preconditions; | ||
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| import org.apache.hadoop.yarn.api.records.Resource; | ||
| import org.slf4j.Logger; | ||
| import org.slf4j.LoggerFactory; | ||
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| import javax.annotation.Nullable; | ||
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| import java.util.Collections; | ||
| import java.util.HashMap; | ||
| import java.util.HashSet; | ||
| import java.util.Map; | ||
| import java.util.Optional; | ||
| import java.util.Set; | ||
| import java.util.stream.Collectors; | ||
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| /** | ||
| * Utility class for converting between Flink {@link WorkerResourceSpec} and Yarn {@link Resource}. | ||
| */ | ||
| public class WorkerSpecContainerResourceAdapter { | ||
| private static final Logger LOG = LoggerFactory.getLogger(WorkerSpecContainerResourceAdapter.class); | ||
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| private final Configuration flinkConfig; | ||
| private final int minMemMB; | ||
| private final int maxMemMB; | ||
| private final int minVcore; | ||
| private final int maxVcore; | ||
| private final WorkerSpecContainerResourceAdapter.MatchingStrategy matchingStrategy; | ||
| private final Map<WorkerResourceSpec, Resource> workerSpecToContainerResource; | ||
| private final Map<Resource, Set<WorkerResourceSpec>> containerResourceToWorkerSpecs; | ||
| private final Map<Integer, Set<Resource>> containerMemoryToContainerResource; | ||
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| WorkerSpecContainerResourceAdapter( | ||
| final Configuration flinkConfig, | ||
| final int minMemMB, | ||
| final int minVcore, | ||
| final int maxMemMB, | ||
| final int maxVcore, | ||
| final WorkerSpecContainerResourceAdapter.MatchingStrategy matchingStrategy) { | ||
| this.flinkConfig = Preconditions.checkNotNull(flinkConfig); | ||
| this.minMemMB = minMemMB; | ||
| this.minVcore = minVcore; | ||
| this.maxMemMB = maxMemMB; | ||
| this.maxVcore = maxVcore; | ||
| this.matchingStrategy = matchingStrategy; | ||
| workerSpecToContainerResource = new HashMap<>(); | ||
| containerResourceToWorkerSpecs = new HashMap<>(); | ||
| containerMemoryToContainerResource = new HashMap<>(); | ||
| } | ||
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| @VisibleForTesting | ||
| Optional<Resource> tryComputeContainerResource(final WorkerResourceSpec workerResourceSpec) { | ||
| return Optional.ofNullable(workerSpecToContainerResource.computeIfAbsent( | ||
| Preconditions.checkNotNull(workerResourceSpec), | ||
| this::createAndMapContainerResource)); | ||
| } | ||
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| @VisibleForTesting | ||
| Set<WorkerResourceSpec> getWorkerSpecs(final Resource containerResource) { | ||
| return getEquivalentContainerResource(containerResource).stream() | ||
| .flatMap(resource -> containerResourceToWorkerSpecs.getOrDefault(resource, Collections.emptySet()).stream()) | ||
| .collect(Collectors.toSet()); | ||
| } | ||
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| @VisibleForTesting | ||
| Set<Resource> getEquivalentContainerResource(final Resource containerResource) { | ||
| // Yarn might ignore the requested vcores, depending on its configurations. | ||
| // In such cases, we should also not matching vcores. | ||
| final Set<Resource> equivalentContainerResources; | ||
| switch (matchingStrategy) { | ||
| case MATCH_VCORE: | ||
| equivalentContainerResources = Collections.singleton(containerResource); | ||
| break; | ||
| case IGNORE_VCORE: | ||
| default: | ||
| equivalentContainerResources = containerMemoryToContainerResource | ||
| .getOrDefault(containerResource.getMemory(), Collections.emptySet()); | ||
| break; | ||
| } | ||
| return equivalentContainerResources; | ||
| } | ||
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| @Nullable | ||
| private Resource createAndMapContainerResource(final WorkerResourceSpec workerResourceSpec) { | ||
| final TaskExecutorProcessSpec taskExecutorProcessSpec = | ||
| TaskExecutorProcessUtils.processSpecFromWorkerResourceSpec(flinkConfig, workerResourceSpec); | ||
| final Resource containerResource = Resource.newInstance( | ||
| normalize(taskExecutorProcessSpec.getTotalProcessMemorySize().getMebiBytes(), minMemMB), | ||
| normalize(taskExecutorProcessSpec.getCpuCores().getValue().intValue(), minVcore)); | ||
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| if (resourceWithinMaxAllocation(containerResource)) { | ||
| containerResourceToWorkerSpecs.computeIfAbsent(containerResource, ignored -> new HashSet<>()) | ||
| .add(workerResourceSpec); | ||
| containerMemoryToContainerResource.computeIfAbsent(containerResource.getMemory(), ignored -> new HashSet<>()) | ||
| .add(containerResource); | ||
| return containerResource; | ||
| } else { | ||
| LOG.warn("Requested container resource {} exceeds yarn max allocation {}. Will not allocate resource.", | ||
| containerResource, | ||
| Resource.newInstance(maxMemMB, maxVcore)); | ||
| return null; | ||
| } | ||
| } | ||
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| /** | ||
| * Normalize to the minimum integer that is greater or equal to 'value' and is integer multiple of 'unitValue'. | ||
| */ | ||
| private int normalize(final int value, final int unitValue) { | ||
| return MathUtils.divideRoundUp(value, unitValue) * unitValue; | ||
| } | ||
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| boolean resourceWithinMaxAllocation(final Resource resource) { | ||
| return resource.getMemory() <= maxMemMB && resource.getVirtualCores() <= maxVcore; | ||
| } | ||
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| enum MatchingStrategy { | ||
| MATCH_VCORE, | ||
| IGNORE_VCORE | ||
| } | ||
| } |
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