org.apache.flink.runtime.jobmaster.slotpool.PhysicalSlot Maven / Gradle / Ivy
/*
* 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.jobmaster.slotpool;
import org.apache.flink.runtime.jobmaster.SlotContext;
/**
* The context of an {@link AllocatedSlot}. This represent an interface to classes outside the slot pool to interact
* with allocated slots.
*/
public interface PhysicalSlot extends SlotContext {
/**
* Tries to assign the given payload to this allocated slot. This only works if there has not
* been another payload assigned to this slot.
*
* @param payload to assign to this slot
* @return true if the payload could be assigned, otherwise false
*/
boolean tryAssignPayload(Payload payload);
/**
* Payload which can be assigned to an {@link AllocatedSlot}.
*/
interface Payload {
/**
* Releases the payload
*
* @param cause of the payload release
*/
void release(Throwable cause);
}
}