org.apache.flink.runtime.scheduler.MergingSharedSlotProfileRetrieverFactory Maven / Gradle / Ivy
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* to you under the Apache License, Version 2.0 (the
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* with the License. You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
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* Unless required by applicable law or agreed to in writing, software
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*/
package org.apache.flink.runtime.scheduler;
import org.apache.flink.runtime.clusterframework.types.AllocationID;
import org.apache.flink.runtime.clusterframework.types.ResourceProfile;
import org.apache.flink.runtime.clusterframework.types.SlotProfile;
import org.apache.flink.runtime.scheduler.strategy.ExecutionVertexID;
import org.apache.flink.runtime.taskmanager.TaskManagerLocation;
import org.apache.flink.util.Preconditions;
import java.util.ArrayList;
import java.util.Collection;
import java.util.HashSet;
import java.util.Optional;
import java.util.Set;
import java.util.function.Function;
import java.util.function.Supplier;
/** Factory for {@link MergingSharedSlotProfileRetriever}. */
class MergingSharedSlotProfileRetrieverFactory
implements SharedSlotProfileRetriever.SharedSlotProfileRetrieverFactory {
private final SyncPreferredLocationsRetriever preferredLocationsRetriever;
private final Function> priorAllocationIdRetriever;
private final Supplier> reservedAllocationIdsRetriever;
MergingSharedSlotProfileRetrieverFactory(
SyncPreferredLocationsRetriever preferredLocationsRetriever,
Function> priorAllocationIdRetriever,
Supplier> reservedAllocationIdsRetriever) {
this.preferredLocationsRetriever = Preconditions.checkNotNull(preferredLocationsRetriever);
this.priorAllocationIdRetriever = Preconditions.checkNotNull(priorAllocationIdRetriever);
this.reservedAllocationIdsRetriever =
Preconditions.checkNotNull(reservedAllocationIdsRetriever);
}
@Override
public SharedSlotProfileRetriever createFromBulk(Set bulk) {
return new MergingSharedSlotProfileRetriever(reservedAllocationIdsRetriever.get(), bulk);
}
/**
* Computes a merged {@link SlotProfile} of an execution slot sharing group within a bulk to
* schedule.
*/
private class MergingSharedSlotProfileRetriever implements SharedSlotProfileRetriever {
/** All reserved {@link AllocationID}s of the job. */
private final Set reservedAllocationIds;
/** All {@link ExecutionVertexID}s of the bulk. */
private final Set producersToIgnore;
private MergingSharedSlotProfileRetriever(
Set reservedAllocationIds, Set producersToIgnore) {
this.reservedAllocationIds = Preconditions.checkNotNull(reservedAllocationIds);
this.producersToIgnore = Preconditions.checkNotNull(producersToIgnore);
}
/**
* Computes a {@link SlotProfile} of an execution slot sharing group.
*
* The preferred locations of the {@link SlotProfile} is a union of the preferred
* locations of all executions sharing the slot. The input locations within the bulk are
* ignored to avoid cyclic dependencies within the region, e.g. in case of all-to-all
* pipelined connections, so that the allocations do not block each other.
*
*
The preferred {@link AllocationID}s of the {@link SlotProfile} are all previous {@link
* AllocationID}s of all executions sharing the slot.
*
*
The {@link SlotProfile} also refers to all reserved {@link AllocationID}s of the job.
*
* @param executionSlotSharingGroup executions sharing the slot.
* @param physicalSlotResourceProfile {@link ResourceProfile} of the slot.
* @return {@link SlotProfile} to allocate for the {@code executionSlotSharingGroup}.
*/
@Override
public SlotProfile getSlotProfile(
ExecutionSlotSharingGroup executionSlotSharingGroup,
ResourceProfile physicalSlotResourceProfile) {
Collection priorAllocations = new HashSet<>();
Collection preferredLocations = new ArrayList<>();
for (ExecutionVertexID execution : executionSlotSharingGroup.getExecutionVertexIds()) {
priorAllocationIdRetriever.apply(execution).ifPresent(priorAllocations::add);
preferredLocations.addAll(
preferredLocationsRetriever.getPreferredLocations(
execution, producersToIgnore));
}
return SlotProfile.priorAllocation(
physicalSlotResourceProfile,
physicalSlotResourceProfile,
preferredLocations,
priorAllocations,
reservedAllocationIds);
}
}
}