org.apache.flink.runtime.jobmaster.slotpool.Scheduler 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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*/
package org.apache.flink.runtime.jobmaster.slotpool;
import org.apache.flink.runtime.concurrent.ComponentMainThreadExecutor;
import org.apache.flink.runtime.jobmaster.SlotOwner;
import javax.annotation.Nonnull;
/**
* Basic interface for the current scheduler, which is a {@link SlotProvider} and a {@link SlotOwner}.
*/
public interface Scheduler extends SlotProvider, SlotOwner {
/**
* Start the scheduler by initializing the main thread executor.
*
* @param mainThreadExecutor the main thread executor of the job master.
*/
void start(@Nonnull ComponentMainThreadExecutor mainThreadExecutor);
/**
* Returns true, iff the scheduling strategy of the scheduler requires to know about previous allocations.
*/
boolean requiresPreviousExecutionGraphAllocations();
}