| /** |
| * 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.scheduler.common; |
| |
| import java.util.ArrayList; |
| import java.util.List; |
| import org.apache.hadoop.classification.InterfaceAudience; |
| import org.apache.hadoop.classification.InterfaceStability; |
| import org.apache.hadoop.yarn.api.records.ContainerId; |
| import org.apache.hadoop.yarn.api.records.Resource; |
| import org.apache.hadoop.yarn.server.resourcemanager.rmcontainer.RMContainer; |
| |
| @InterfaceAudience.Private |
| @InterfaceStability.Unstable |
| public class AssignmentInformation { |
| |
| public enum Operation { |
| ALLOCATION, RESERVATION; |
| private static int SIZE = Operation.values().length; |
| static int size() { |
| return SIZE; |
| } |
| } |
| |
| public static class AssignmentDetails { |
| public RMContainer rmContainer; |
| public ContainerId containerId; |
| public String queue; |
| |
| public AssignmentDetails(RMContainer rmContainer, String queue) { |
| this.containerId = rmContainer.getContainerId(); |
| this.rmContainer = rmContainer; |
| this.queue = queue; |
| } |
| } |
| |
| private final int[] operationCounts; |
| private final Resource[] operationResources; |
| private final List<AssignmentDetails>[] operationDetails; |
| |
| @SuppressWarnings("unchecked") |
| public AssignmentInformation() { |
| int numOps = Operation.size(); |
| this.operationCounts = new int[numOps]; |
| this.operationResources = new Resource[numOps]; |
| this.operationDetails = new List[numOps]; |
| for (int i=0; i < numOps; i++) { |
| operationCounts[i] = 0; |
| operationResources[i] = Resource.newInstance(0, 0); |
| operationDetails[i] = new ArrayList<AssignmentDetails>(); |
| } |
| } |
| |
| public int getNumAllocations() { |
| return operationCounts[Operation.ALLOCATION.ordinal()]; |
| } |
| |
| public void incrAllocations() { |
| increment(Operation.ALLOCATION, 1); |
| } |
| |
| public void incrAllocations(int by) { |
| increment(Operation.ALLOCATION, by); |
| } |
| |
| public int getNumReservations() { |
| return operationCounts[Operation.RESERVATION.ordinal()]; |
| } |
| |
| public void incrReservations() { |
| increment(Operation.RESERVATION, 1); |
| } |
| |
| public void incrReservations(int by) { |
| increment(Operation.RESERVATION, by); |
| } |
| |
| private void increment(Operation op, int by) { |
| operationCounts[op.ordinal()] += by; |
| } |
| |
| public Resource getAllocated() { |
| return operationResources[Operation.ALLOCATION.ordinal()]; |
| } |
| |
| public Resource getReserved() { |
| return operationResources[Operation.RESERVATION.ordinal()]; |
| } |
| |
| private void addAssignmentDetails(Operation op, RMContainer rmContainer, |
| String queue) { |
| getDetails(op).add(new AssignmentDetails(rmContainer, queue)); |
| } |
| |
| public void addAllocationDetails(RMContainer rmContainer, String queue) { |
| addAssignmentDetails(Operation.ALLOCATION, rmContainer, queue); |
| } |
| |
| public void addReservationDetails(RMContainer rmContainer, String queue) { |
| addAssignmentDetails(Operation.RESERVATION, rmContainer, queue); |
| } |
| |
| private List<AssignmentDetails> getDetails(Operation op) { |
| return operationDetails[op.ordinal()]; |
| } |
| |
| public List<AssignmentDetails> getAllocationDetails() { |
| return getDetails(Operation.ALLOCATION); |
| } |
| |
| public List<AssignmentDetails> getReservationDetails() { |
| return getDetails(Operation.RESERVATION); |
| } |
| |
| private RMContainer getFirstRMContainerFromOperation(Operation op) { |
| List<AssignmentDetails> assignDetails = getDetails(op); |
| if (assignDetails != null && !assignDetails.isEmpty()) { |
| return assignDetails.get(0).rmContainer; |
| } |
| return null; |
| } |
| |
| public RMContainer getFirstAllocatedOrReservedRMContainer() { |
| RMContainer rmContainer; |
| rmContainer = getFirstRMContainerFromOperation(Operation.ALLOCATION); |
| if (null != rmContainer) { |
| return rmContainer; |
| } |
| return getFirstRMContainerFromOperation(Operation.RESERVATION); |
| } |
| |
| public ContainerId getFirstAllocatedOrReservedContainerId() { |
| RMContainer rmContainer = getFirstAllocatedOrReservedRMContainer(); |
| if (null != rmContainer) { |
| return rmContainer.getContainerId(); |
| } |
| return null; |
| } |
| } |