/*******************************************************************************
* 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;
import java.util.Collections;
import java.util.HashMap;
import java.util.Map;
import java.util.Random;
import org.apache.hadoop.yarn.api.records.ReservationDefinition;
import org.apache.hadoop.yarn.api.records.ReservationId;
import org.apache.hadoop.yarn.api.records.ReservationRequest;
import org.apache.hadoop.yarn.api.records.ReservationRequestInterpreter;
import org.apache.hadoop.yarn.api.records.ReservationRequests;
import org.apache.hadoop.yarn.api.records.Resource;
import org.apache.hadoop.yarn.api.records.impl.pb.ReservationDefinitionPBImpl;
import org.apache.hadoop.yarn.api.records.impl.pb.ReservationRequestsPBImpl;
import org.apache.hadoop.yarn.util.resource.DefaultResourceCalculator;
import org.apache.hadoop.yarn.util.resource.ResourceCalculator;
import org.junit.After;
import org.junit.Assert;
import org.junit.Before;
import org.junit.Test;
public class TestInMemoryReservationAllocation {
private String user = "yarn";
private String planName = "test-reservation";
private ResourceCalculator resCalc;
private Resource minAlloc;
private Random rand = new Random();
@Before
public void setUp() {
resCalc = new DefaultResourceCalculator();
minAlloc = Resource.newInstance(1, 1);
}
@After
public void tearDown() {
user = null;
planName = null;
resCalc = null;
minAlloc = null;
}
@Test
public void testBlocks() {
ReservationId reservationID =
ReservationId.newInstance(rand.nextLong(), rand.nextLong());
int[] alloc = { 10, 10, 10, 10, 10, 10 };
int start = 100;
ReservationDefinition rDef =
createSimpleReservationDefinition(start, start + alloc.length + 1,
alloc.length);
Map<ReservationInterval, ReservationRequest> allocations =
generateAllocation(start, alloc, false, false);
ReservationAllocation rAllocation =
new InMemoryReservationAllocation(reservationID, rDef, user, planName,
start, start + alloc.length + 1, allocations, resCalc, minAlloc);
doAssertions(rAllocation, reservationID, rDef, allocations, start, alloc);
Assert.assertFalse(rAllocation.containsGangs());
for (int i = 0; i < alloc.length; i++) {
Assert.assertEquals(Resource.newInstance(1024 * (alloc[i]), (alloc[i])),
rAllocation.getResourcesAtTime(start + i));
}
}
@Test
public void testSteps() {
ReservationId reservationID =
ReservationId.newInstance(rand.nextLong(), rand.nextLong());
int[] alloc = { 10, 10, 10, 10, 10, 10 };
int start = 100;
ReservationDefinition rDef =
createSimpleReservationDefinition(start, start + alloc.length + 1,
alloc.length);
Map<ReservationInterval, ReservationRequest> allocations =
generateAllocation(start, alloc, true, false);
ReservationAllocation rAllocation =
new InMemoryReservationAllocation(reservationID, rDef, user, planName,
start, start + alloc.length + 1, allocations, resCalc, minAlloc);
doAssertions(rAllocation, reservationID, rDef, allocations, start, alloc);
Assert.assertFalse(rAllocation.containsGangs());
for (int i = 0; i < alloc.length; i++) {
Assert.assertEquals(
Resource.newInstance(1024 * (alloc[i] + i), (alloc[i] + i)),
rAllocation.getResourcesAtTime(start + i));
}
}
@Test
public void testSkyline() {
ReservationId reservationID =
ReservationId.newInstance(rand.nextLong(), rand.nextLong());
int[] alloc = { 0, 5, 10, 10, 5, 0 };
int start = 100;
ReservationDefinition rDef =
createSimpleReservationDefinition(start, start + alloc.length + 1,
alloc.length);
Map<ReservationInterval, ReservationRequest> allocations =
generateAllocation(start, alloc, true, false);
ReservationAllocation rAllocation =
new InMemoryReservationAllocation(reservationID, rDef, user, planName,
start, start + alloc.length + 1, allocations, resCalc, minAlloc);
doAssertions(rAllocation, reservationID, rDef, allocations, start, alloc);
Assert.assertFalse(rAllocation.containsGangs());
for (int i = 0; i < alloc.length; i++) {
Assert.assertEquals(
Resource.newInstance(1024 * (alloc[i] + i), (alloc[i] + i)),
rAllocation.getResourcesAtTime(start + i));
}
}
@Test
public void testZeroAlloaction() {
ReservationId reservationID =
ReservationId.newInstance(rand.nextLong(), rand.nextLong());
int[] alloc = {};
long start = 0;
ReservationDefinition rDef =
createSimpleReservationDefinition(start, start + alloc.length + 1,
alloc.length);
Map<ReservationInterval, ReservationRequest> allocations =
new HashMap<ReservationInterval, ReservationRequest>();
ReservationAllocation rAllocation =
new InMemoryReservationAllocation(reservationID, rDef, user, planName,
start, start + alloc.length + 1, allocations, resCalc, minAlloc);
doAssertions(rAllocation, reservationID, rDef, allocations, (int) start,
alloc);
Assert.assertFalse(rAllocation.containsGangs());
}
@Test
public void testGangAlloaction() {
ReservationId reservationID =
ReservationId.newInstance(rand.nextLong(), rand.nextLong());
int[] alloc = { 10, 10, 10, 10, 10, 10 };
int start = 100;
ReservationDefinition rDef =
createSimpleReservationDefinition(start, start + alloc.length + 1,
alloc.length);
Map<ReservationInterval, ReservationRequest> allocations =
generateAllocation(start, alloc, false, true);
ReservationAllocation rAllocation =
new InMemoryReservationAllocation(reservationID, rDef, user, planName,
start, start + alloc.length + 1, allocations, resCalc, minAlloc);
doAssertions(rAllocation, reservationID, rDef, allocations, start, alloc);
Assert.assertTrue(rAllocation.containsGangs());
for (int i = 0; i < alloc.length; i++) {
Assert.assertEquals(Resource.newInstance(1024 * (alloc[i]), (alloc[i])),
rAllocation.getResourcesAtTime(start + i));
}
}
private void doAssertions(ReservationAllocation rAllocation,
ReservationId reservationID, ReservationDefinition rDef,
Map<ReservationInterval, ReservationRequest> allocations, int start,
int[] alloc) {
Assert.assertEquals(reservationID, rAllocation.getReservationId());
Assert.assertEquals(rDef, rAllocation.getReservationDefinition());
Assert.assertEquals(allocations, rAllocation.getAllocationRequests());
Assert.assertEquals(user, rAllocation.getUser());
Assert.assertEquals(planName, rAllocation.getPlanName());
Assert.assertEquals(start, rAllocation.getStartTime());
Assert.assertEquals(start + alloc.length + 1, rAllocation.getEndTime());
}
private ReservationDefinition createSimpleReservationDefinition(long arrival,
long deadline, long duration) {
// create a request with a single atomic ask
ReservationRequest r =
ReservationRequest.newInstance(Resource.newInstance(1024, 1), 1, 1,
duration);
ReservationDefinition rDef = new ReservationDefinitionPBImpl();
ReservationRequests reqs = new ReservationRequestsPBImpl();
reqs.setReservationResources(Collections.singletonList(r));
reqs.setInterpreter(ReservationRequestInterpreter.R_ALL);
rDef.setReservationRequests(reqs);
rDef.setArrival(arrival);
rDef.setDeadline(deadline);
return rDef;
}
private Map<ReservationInterval, ReservationRequest> generateAllocation(
int startTime, int[] alloc, boolean isStep, boolean isGang) {
Map<ReservationInterval, ReservationRequest> req =
new HashMap<ReservationInterval, ReservationRequest>();
int numContainers = 0;
for (int i = 0; i < alloc.length; i++) {
if (isStep) {
numContainers = alloc[i] + i;
} else {
numContainers = alloc[i];
}
ReservationRequest rr =
ReservationRequest.newInstance(Resource.newInstance(1024, 1),
(numContainers));
if (isGang) {
rr.setConcurrency(numContainers);
}
req.put(new ReservationInterval(startTime + i, startTime + i + 1), rr);
}
return req;
}
}