tillrohrmann commented on a change in pull request #11353: [FLINK-16438][yarn]
Make YarnResourceManager starts workers using WorkerResourceSpec requested by
SlotManager
URL: https://github.com/apache/flink/pull/11353#discussion_r404124170
##########
File path:
flink-yarn/src/main/java/org/apache/flink/yarn/YarnResourceManager.java
##########
@@ -615,4 +632,85 @@ protected double getCpuCores(final Configuration
configuration) {
//noinspection NumericCastThatLosesPrecision
return cpuCoresLong;
}
+
+ /**
+ * Utility class for converting between Flink {@link
WorkerResourceSpec} and Yarn {@link Resource}.
+ */
+ @VisibleForTesting
+ static class WorkerSpecContainerResourceAdapter {
+ private final Configuration flinkConfig;
+ private final int minMemMB;
+ private final int minVcore;
+ private final boolean matchVcores;
+ private final Map<WorkerResourceSpec, Resource>
workerSpecToContainerResource;
+ private final Map<Resource, Collection<WorkerResourceSpec>>
containerResourceToWorkerSpecs;
+ private final Map<Integer, Collection<Resource>>
containerMemoryToContainerResource;
+
+ @VisibleForTesting
+ WorkerSpecContainerResourceAdapter(
+ final Configuration flinkConfig,
+ final int minMemMB,
+ final int minVcore,
+ final boolean matchVcores) {
+ this.flinkConfig =
Preconditions.checkNotNull(flinkConfig);
+ this.minMemMB = minMemMB;
+ this.minVcore = minVcore;
+ this.matchVcores = matchVcores;
+ workerSpecToContainerResource = new HashMap<>();
+ containerResourceToWorkerSpecs = new HashMap<>();
+ containerMemoryToContainerResource = new HashMap<>();
+ }
+
+ @VisibleForTesting
+ Resource getContainerResource(final WorkerResourceSpec
workerResourceSpec) {
+ return workerSpecToContainerResource.computeIfAbsent(
+ Preconditions.checkNotNull(workerResourceSpec),
+ this::createAndMapContainerResource);
+ }
+
+ @VisibleForTesting
+ Collection<WorkerResourceSpec> getWorkerSpecs(final Resource
containerResource) {
+ return
getEquivalentContainerResource(containerResource).stream()
+ .flatMap(resource ->
containerResourceToWorkerSpecs.getOrDefault(resource,
Collections.emptyList()).stream())
+ .collect(Collectors.toList());
+ }
+
+ @VisibleForTesting
+ Collection<Resource> getEquivalentContainerResource(final
Resource containerResource) {
+ // Yarn might ignore the requested vcores, depending on
its configurations.
+ // In such cases, we should also not matching vcores.
+ return matchVcores ?
+ Collections.singletonList(containerResource) :
+
containerMemoryToContainerResource.getOrDefault(containerResource.getMemory(),
Collections.emptyList());
+ }
+
+ private Resource createAndMapContainerResource(final
WorkerResourceSpec workerResourceSpec) {
+ // TODO: need to unset process/flink memory size from
configuration if dynamic worker resource is activated
Review comment:
In general I agree unless it is not yet fully supported by the RM
implementation. If it is, then I guess we also don't need this comment. If it
is not supported, then the check state will help us to remember what needs to
be changed.
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