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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
*
* 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.flink.runtime.resourcemanager.slotmanager;
import org.apache.flink.api.common.time.Time;
import org.apache.flink.runtime.clusterframework.types.ResourceID;
import org.apache.flink.runtime.clusterframework.types.SlotID;
import org.apache.flink.runtime.clusterframework.types.TaskManagerSlot;
import org.apache.flink.runtime.concurrent.ScheduledExecutor;
import org.apache.flink.runtime.resourcemanager.SlotRequest;
import org.apache.flink.runtime.resourcemanager.placementconstraint.SlotTag;
import org.apache.flink.util.Preconditions;
import java.util.HashMap;
import java.util.HashSet;
import java.util.Iterator;
import java.util.Map;
import java.util.Set;
/**
* A slot manager that answers request with the slot which exactly the same resource with the request.
*/
public class StrictlyMatchingSlotManager extends SlotManager {
private Map> tmTags = new HashMap<>();
public StrictlyMatchingSlotManager(
ScheduledExecutor scheduledExecutor,
Time taskManagerRequestTimeout,
Time slotRequestTimeout,
Time taskManagerTimeout,
Time taskManagerCheckerInitialDelay) {
this(scheduledExecutor, taskManagerRequestTimeout, slotRequestTimeout, taskManagerTimeout, Time.milliseconds(0), taskManagerCheckerInitialDelay);
}
public StrictlyMatchingSlotManager(
ScheduledExecutor scheduledExecutor,
Time taskManagerRequestTimeout,
Time slotRequestTimeout,
Time taskManagerTimeout,
Time taskManagerFastTimeout,
Time taskManagerCheckerInitialDelay) {
super(scheduledExecutor, taskManagerRequestTimeout, slotRequestTimeout, taskManagerTimeout, taskManagerFastTimeout, taskManagerCheckerInitialDelay);
}
@Override
protected TaskManagerSlot findMatchingSlot(SlotRequest slotRequest) {
Map numTmFreeSlots = new HashMap<>();
for (SlotID slotID : freeSlots.keySet()) {
ResourceID resourceID = slotID.getResourceID();
numTmFreeSlots.put(resourceID, numTmFreeSlots.getOrDefault(resourceID, 0) + 1);
}
Iterator> iterator = freeSlots.entrySet().stream()
.sorted((entry1, entry2) -> {
int comp = numTmFreeSlots.get(entry1.getKey().getResourceID()) - numTmFreeSlots.get(entry2.getKey().getResourceID());
if (comp == 0) {
comp = entry1.getKey().getResourceID().hashCode() - entry2.getKey().getResourceID().hashCode();
}
return comp;
})
.iterator();
while (iterator.hasNext()) {
TaskManagerSlot taskManagerSlot = iterator.next().getValue();
// sanity check
Preconditions.checkState(taskManagerSlot.getState() == TaskManagerSlot.State.FREE,
String.format("Slot %s is in state %s", taskManagerSlot.getSlotId(), taskManagerSlot.getState()));
Set tags = tmTags.get(taskManagerSlot.getSlotId().getResourceID());
if (taskManagerSlot.getResourceProfile().equals(slotRequest.getResourceProfile()) &&
(tags == null || tags.equals(slotRequest.getTags())) &&
placementConstraintManager.check(
slotRequest.getJobId(),
allocationIdTags.get(slotRequest.getAllocationId()),
getTaskExecutorSlotTags(taskManagerSlot.getSlotId()))) {
freeSlots.remove(taskManagerSlot.getSlotId());
return taskManagerSlot;
}
}
return null;
}
@Override
protected PendingSlotRequest findMatchingRequest(TaskManagerSlot taskManagerSlot) {
for (PendingSlotRequest pendingSlotRequest : pendingSlotRequests.values()) {
Set tags = tmTags.get(taskManagerSlot.getSlotId().getResourceID());
if (taskManagerSlot.getResourceProfile().equals(pendingSlotRequest.getResourceProfile()) &&
!pendingSlotRequest.isAssigned() &&
(tags == null || tags.equals(new HashSet<>(pendingSlotRequest.getTags()))) &&
placementConstraintManager.check(
pendingSlotRequest.getJobId(),
allocationIdTags.get(pendingSlotRequest.getAllocationId()),
getTaskExecutorSlotTags(taskManagerSlot.getSlotId()))) {
return pendingSlotRequest;
}
}
return null;
}
public void setTmTags(ResourceID resourceId, Set tags) {
tmTags.put(resourceId, tags);
}
}