| /** |
| * 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.hadoop.yarn.server.resourcemanager.reservation.planning; |
| |
| import java.util.LinkedList; |
| import java.util.List; |
| |
| import org.apache.hadoop.conf.Configuration; |
| import org.apache.hadoop.yarn.api.records.ReservationDefinition; |
| import org.apache.hadoop.yarn.api.records.ReservationId; |
| import org.apache.hadoop.yarn.server.resourcemanager.reservation.Plan; |
| import org.apache.hadoop.yarn.server.resourcemanager.reservation.exceptions.PlanningException; |
| import org.slf4j.Logger; |
| import org.slf4j.LoggerFactory; |
| |
| /** |
| * A planning algorithm that first runs LowCostAligned, and if it fails runs |
| * Greedy. |
| */ |
| public class AlignedPlannerWithGreedy implements ReservationAgent { |
| |
| // Default smoothness factor |
| public static final int DEFAULT_SMOOTHNESS_FACTOR = 10; |
| public static final String SMOOTHNESS_FACTOR = |
| "yarn.resourcemanager.reservation-system.smoothness-factor"; |
| private boolean allocateLeft = false; |
| |
| |
| // Log |
| private static final Logger LOG = LoggerFactory |
| .getLogger(AlignedPlannerWithGreedy.class); |
| |
| // Smoothness factor |
| private ReservationAgent planner; |
| |
| // Constructor |
| public AlignedPlannerWithGreedy() { |
| |
| } |
| |
| @Override |
| public void init(Configuration conf) { |
| int smoothnessFactor = |
| conf.getInt(SMOOTHNESS_FACTOR, DEFAULT_SMOOTHNESS_FACTOR); |
| allocateLeft = conf.getBoolean(FAVOR_EARLY_ALLOCATION, |
| DEFAULT_GREEDY_FAVOR_EARLY_ALLOCATION); |
| |
| // List of algorithms |
| List<ReservationAgent> listAlg = new LinkedList<ReservationAgent>(); |
| |
| // LowCostAligned planning algorithm |
| ReservationAgent algAligned = |
| new IterativePlanner(new StageExecutionIntervalByDemand(), |
| new StageAllocatorLowCostAligned(smoothnessFactor, allocateLeft), |
| allocateLeft); |
| |
| listAlg.add(algAligned); |
| |
| // Greedy planning algorithm |
| ReservationAgent algGreedy = |
| new IterativePlanner(new StageExecutionIntervalUnconstrained(), |
| new StageAllocatorGreedyRLE(allocateLeft), allocateLeft); |
| listAlg.add(algGreedy); |
| |
| // Set planner: |
| // 1. Attempt to execute algAligned |
| // 2. If failed, fall back to algGreedy |
| planner = new TryManyReservationAgents(listAlg); |
| } |
| |
| @Override |
| public boolean createReservation(ReservationId reservationId, String user, |
| Plan plan, ReservationDefinition contract) throws PlanningException { |
| |
| LOG.info("placing the following ReservationRequest: " + contract); |
| |
| try { |
| boolean res = |
| planner.createReservation(reservationId, user, plan, contract); |
| |
| if (res) { |
| LOG.info("OUTCOME: SUCCESS, Reservation ID: " |
| + reservationId.toString() + ", Contract: " + contract.toString()); |
| } else { |
| LOG.info("OUTCOME: FAILURE, Reservation ID: " |
| + reservationId.toString() + ", Contract: " + contract.toString()); |
| } |
| return res; |
| } catch (PlanningException e) { |
| LOG.info("OUTCOME: FAILURE, Reservation ID: " + reservationId.toString() |
| + ", Contract: " + contract.toString()); |
| throw e; |
| } |
| |
| } |
| |
| @Override |
| public boolean updateReservation(ReservationId reservationId, String user, |
| Plan plan, ReservationDefinition contract) throws PlanningException { |
| |
| LOG.info("updating the following ReservationRequest: " + contract); |
| |
| return planner.updateReservation(reservationId, user, plan, contract); |
| |
| } |
| |
| @Override |
| public boolean deleteReservation(ReservationId reservationId, String user, |
| Plan plan) throws PlanningException { |
| |
| LOG.info("removing the following ReservationId: " + reservationId); |
| |
| return planner.deleteReservation(reservationId, user, plan); |
| |
| } |
| } |