org.apache.flink.runtime.jobmaster.slotpool.DefaultSchedulerFactory Maven / Gradle / Ivy
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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,
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* See the License for the specific language governing permissions and
* limitations under the License.
*/
package org.apache.flink.runtime.jobmaster.slotpool;
import org.apache.flink.configuration.CheckpointingOptions;
import org.apache.flink.configuration.ClusterOptions;
import org.apache.flink.configuration.Configuration;
import javax.annotation.Nonnull;
/**
* Default implementation of a {@link SchedulerFactory}.
*/
public class DefaultSchedulerFactory implements SchedulerFactory {
@Nonnull
private final SlotSelectionStrategy slotSelectionStrategy;
public DefaultSchedulerFactory(@Nonnull SlotSelectionStrategy slotSelectionStrategy) {
this.slotSelectionStrategy = slotSelectionStrategy;
}
@Nonnull
@Override
public Scheduler createScheduler(@Nonnull SlotPool slotPool) {
return new SchedulerImpl(slotSelectionStrategy, slotPool);
}
@Nonnull
private static SlotSelectionStrategy selectSlotSelectionStrategy(@Nonnull Configuration configuration) {
final boolean evenlySpreadOutSlots = configuration.getBoolean(ClusterOptions.EVENLY_SPREAD_OUT_SLOTS_STRATEGY);
final SlotSelectionStrategy locationPreferenceSlotSelectionStrategy;
if (evenlySpreadOutSlots) {
locationPreferenceSlotSelectionStrategy = LocationPreferenceSlotSelectionStrategy.createEvenlySpreadOut();
} else {
locationPreferenceSlotSelectionStrategy = LocationPreferenceSlotSelectionStrategy.createDefault();
}
if (configuration.getBoolean(CheckpointingOptions.LOCAL_RECOVERY)) {
return PreviousAllocationSlotSelectionStrategy.create(locationPreferenceSlotSelectionStrategy);
} else {
return locationPreferenceSlotSelectionStrategy;
}
}
public static DefaultSchedulerFactory fromConfiguration(
@Nonnull Configuration configuration) {
return new DefaultSchedulerFactory(selectSlotSelectionStrategy(configuration));
}
}