| /** |
| * 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.monitor.invariants; |
| |
| import org.apache.hadoop.yarn.server.resourcemanager.reservation.Plan; |
| import org.apache.hadoop.yarn.util.UTCClock; |
| import org.slf4j.Logger; |
| import org.slf4j.LoggerFactory; |
| |
| import java.io.IOException; |
| import java.util.Collection; |
| |
| /** |
| * Invariant checker that checks certain reservation invariants are respected. |
| */ |
| public class ReservationInvariantsChecker extends InvariantsChecker { |
| |
| private static final Logger LOG = |
| LoggerFactory.getLogger(ReservationInvariantsChecker.class); |
| |
| private UTCClock clock = new UTCClock(); |
| |
| @Override |
| public void editSchedule() { |
| Collection<Plan> plans = |
| getContext().getReservationSystem().getAllPlans().values(); |
| |
| try { |
| for (Plan plan : plans) { |
| long currReservations = |
| plan.getReservationsAtTime(clock.getTime()).size(); |
| long numberReservationQueues = getContext().getScheduler() |
| .getQueueInfo(plan.getQueueName(), true, false).getChildQueues() |
| .size(); |
| if (currReservations != numberReservationQueues - 1) { |
| logOrThrow("Number of reservations (" + currReservations |
| + ") does NOT match the number of reservationQueues (" |
| + (numberReservationQueues - 1) + "), while it should."); |
| } |
| } |
| } catch (IOException io) { |
| throw new InvariantViolationException("Issue during invariant check: ", |
| io); |
| } |
| |
| } |
| |
| } |