/**
* 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.fair;
import org.apache.hadoop.conf.Configuration;
import org.apache.hadoop.yarn.api.records.Resource;
import org.apache.hadoop.yarn.server.resourcemanager.MockRM;
import static org.junit.Assert.assertEquals;
import org.apache.hadoop.yarn.api.records.ApplicationAttemptId;
import org.apache.hadoop.yarn.api.records.Priority;
import org.apache.hadoop.yarn.server.resourcemanager.RMContext;
import org.apache.hadoop.yarn.server.resourcemanager.scheduler.NodeType;
import org.apache.hadoop.yarn.server.resourcemanager.scheduler.QueueMetrics;
import org.apache.hadoop.yarn.server.resourcemanager.scheduler.fair.policies.DominantResourceFairnessPolicy;
import org.apache.hadoop.yarn.server.resourcemanager.scheduler.fair.policies.FairSharePolicy;
import org.apache.hadoop.yarn.server.resourcemanager.scheduler.fair.policies.FifoPolicy;
import org.apache.hadoop.yarn.util.ControlledClock;
import org.apache.hadoop.yarn.util.resource.Resources;
import org.junit.Before;
import org.junit.Test;
import org.mockito.Mockito;
public class TestFSAppAttempt extends FairSchedulerTestBase {
@Before
public void setup() {
Configuration conf = createConfiguration();
resourceManager = new MockRM(conf);
resourceManager.start();
scheduler = (FairScheduler) resourceManager.getResourceScheduler();
}
@Test
public void testDelayScheduling() {
FSLeafQueue queue = Mockito.mock(FSLeafQueue.class);
Priority prio = Mockito.mock(Priority.class);
Mockito.when(prio.getPriority()).thenReturn(1);
double nodeLocalityThreshold = .5;
double rackLocalityThreshold = .6;
ApplicationAttemptId applicationAttemptId = createAppAttemptId(1, 1);
RMContext rmContext = resourceManager.getRMContext();
FSAppAttempt schedulerApp =
new FSAppAttempt(scheduler, applicationAttemptId, "user1", queue ,
null, rmContext);
// Default level should be node-local
assertEquals(NodeType.NODE_LOCAL, schedulerApp.getAllowedLocalityLevel(
prio, 10, nodeLocalityThreshold, rackLocalityThreshold));
// First five scheduling opportunities should remain node local
for (int i = 0; i < 5; i++) {
schedulerApp.addSchedulingOpportunity(prio);
assertEquals(NodeType.NODE_LOCAL, schedulerApp.getAllowedLocalityLevel(
prio, 10, nodeLocalityThreshold, rackLocalityThreshold));
}
// After five it should switch to rack local
schedulerApp.addSchedulingOpportunity(prio);
assertEquals(NodeType.RACK_LOCAL, schedulerApp.getAllowedLocalityLevel(
prio, 10, nodeLocalityThreshold, rackLocalityThreshold));
// Manually set back to node local
schedulerApp.resetAllowedLocalityLevel(prio, NodeType.NODE_LOCAL);
schedulerApp.resetSchedulingOpportunities(prio);
assertEquals(NodeType.NODE_LOCAL, schedulerApp.getAllowedLocalityLevel(
prio, 10, nodeLocalityThreshold, rackLocalityThreshold));
// Now escalate again to rack-local, then to off-switch
for (int i = 0; i < 5; i++) {
schedulerApp.addSchedulingOpportunity(prio);
assertEquals(NodeType.NODE_LOCAL, schedulerApp.getAllowedLocalityLevel(
prio, 10, nodeLocalityThreshold, rackLocalityThreshold));
}
schedulerApp.addSchedulingOpportunity(prio);
assertEquals(NodeType.RACK_LOCAL, schedulerApp.getAllowedLocalityLevel(
prio, 10, nodeLocalityThreshold, rackLocalityThreshold));
for (int i = 0; i < 6; i++) {
schedulerApp.addSchedulingOpportunity(prio);
assertEquals(NodeType.RACK_LOCAL, schedulerApp.getAllowedLocalityLevel(
prio, 10, nodeLocalityThreshold, rackLocalityThreshold));
}
schedulerApp.addSchedulingOpportunity(prio);
assertEquals(NodeType.OFF_SWITCH, schedulerApp.getAllowedLocalityLevel(
prio, 10, nodeLocalityThreshold, rackLocalityThreshold));
}
@Test
public void testDelaySchedulingForContinuousScheduling()
throws InterruptedException {
FSLeafQueue queue = scheduler.getQueueManager().getLeafQueue("queue", true);
Priority prio = Mockito.mock(Priority.class);
Mockito.when(prio.getPriority()).thenReturn(1);
ControlledClock clock = new ControlledClock();
scheduler.setClock(clock);
long nodeLocalityDelayMs = 5 * 1000L; // 5 seconds
long rackLocalityDelayMs = 6 * 1000L; // 6 seconds
RMContext rmContext = resourceManager.getRMContext();
ApplicationAttemptId applicationAttemptId = createAppAttemptId(1, 1);
FSAppAttempt schedulerApp =
new FSAppAttempt(scheduler, applicationAttemptId, "user1", queue,
null, rmContext);
// Default level should be node-local
assertEquals(NodeType.NODE_LOCAL,
schedulerApp.getAllowedLocalityLevelByTime(prio,
nodeLocalityDelayMs, rackLocalityDelayMs, clock.getTime()));
// after 4 seconds should remain node local
clock.tickSec(4);
assertEquals(NodeType.NODE_LOCAL,
schedulerApp.getAllowedLocalityLevelByTime(prio,
nodeLocalityDelayMs, rackLocalityDelayMs, clock.getTime()));
// after 6 seconds should switch to rack local
clock.tickSec(2);
assertEquals(NodeType.RACK_LOCAL,
schedulerApp.getAllowedLocalityLevelByTime(prio,
nodeLocalityDelayMs, rackLocalityDelayMs, clock.getTime()));
// manually set back to node local
schedulerApp.resetAllowedLocalityLevel(prio, NodeType.NODE_LOCAL);
schedulerApp.resetSchedulingOpportunities(prio, clock.getTime());
assertEquals(NodeType.NODE_LOCAL,
schedulerApp.getAllowedLocalityLevelByTime(prio,
nodeLocalityDelayMs, rackLocalityDelayMs, clock.getTime()));
// Now escalate again to rack-local, then to off-switch
clock.tickSec(6);
assertEquals(NodeType.RACK_LOCAL,
schedulerApp.getAllowedLocalityLevelByTime(prio,
nodeLocalityDelayMs, rackLocalityDelayMs, clock.getTime()));
clock.tickSec(7);
assertEquals(NodeType.OFF_SWITCH,
schedulerApp.getAllowedLocalityLevelByTime(prio,
nodeLocalityDelayMs, rackLocalityDelayMs, clock.getTime()));
}
@Test
/**
* Ensure that when negative paramaters are given (signaling delay scheduling
* no tin use), the least restrictive locality level is returned.
*/
public void testLocalityLevelWithoutDelays() {
FSLeafQueue queue = Mockito.mock(FSLeafQueue.class);
Priority prio = Mockito.mock(Priority.class);
Mockito.when(prio.getPriority()).thenReturn(1);
RMContext rmContext = resourceManager.getRMContext();
ApplicationAttemptId applicationAttemptId = createAppAttemptId(1, 1);
FSAppAttempt schedulerApp =
new FSAppAttempt(scheduler, applicationAttemptId, "user1", queue ,
null, rmContext);
assertEquals(NodeType.OFF_SWITCH, schedulerApp.getAllowedLocalityLevel(
prio, 10, -1.0, -1.0));
}
@Test
public void testHeadroom() {
final FairScheduler mockScheduler = Mockito.mock(FairScheduler.class);
Mockito.when(mockScheduler.getClock()).thenReturn(scheduler.getClock());
final FSLeafQueue mockQueue = Mockito.mock(FSLeafQueue.class);
final Resource queueMaxResources = Resource.newInstance(5 * 1024, 3);
final Resource queueFairShare = Resources.createResource(4096, 2);
final Resource queueUsage = Resource.newInstance(2048, 2);
final Resource queueStarvation =
Resources.subtract(queueFairShare, queueUsage);
final Resource queueMaxResourcesAvailable =
Resources.subtract(queueMaxResources, queueUsage);
final Resource clusterResource = Resources.createResource(8192, 8);
final Resource clusterUsage = Resources.createResource(2048, 2);
final Resource clusterAvailable =
Resources.subtract(clusterResource, clusterUsage);
final QueueMetrics fakeRootQueueMetrics = Mockito.mock(QueueMetrics.class);
Mockito.when(mockQueue.getMaxShare()).thenReturn(queueMaxResources);
Mockito.when(mockQueue.getFairShare()).thenReturn(queueFairShare);
Mockito.when(mockQueue.getResourceUsage()).thenReturn(queueUsage);
Mockito.when(mockScheduler.getClusterResource()).thenReturn
(clusterResource);
Mockito.when(fakeRootQueueMetrics.getAllocatedResources()).thenReturn
(clusterUsage);
Mockito.when(mockScheduler.getRootQueueMetrics()).thenReturn
(fakeRootQueueMetrics);
ApplicationAttemptId applicationAttemptId = createAppAttemptId(1, 1);
RMContext rmContext = resourceManager.getRMContext();
FSAppAttempt schedulerApp =
new FSAppAttempt(mockScheduler, applicationAttemptId, "user1", mockQueue ,
null, rmContext);
// Min of Memory and CPU across cluster and queue is used in
// DominantResourceFairnessPolicy
Mockito.when(mockQueue.getPolicy()).thenReturn(SchedulingPolicy
.getInstance(DominantResourceFairnessPolicy.class));
verifyHeadroom(schedulerApp,
min(queueStarvation.getMemory(),
clusterAvailable.getMemory(),
queueMaxResourcesAvailable.getMemory()),
min(queueStarvation.getVirtualCores(),
clusterAvailable.getVirtualCores(),
queueMaxResourcesAvailable.getVirtualCores())
);
// Fair and Fifo ignore CPU of queue, so use cluster available CPU
Mockito.when(mockQueue.getPolicy()).thenReturn(SchedulingPolicy
.getInstance(FairSharePolicy.class));
verifyHeadroom(schedulerApp,
min(queueStarvation.getMemory(),
clusterAvailable.getMemory(),
queueMaxResourcesAvailable.getMemory()),
Math.min(
clusterAvailable.getVirtualCores(),
queueMaxResourcesAvailable.getVirtualCores())
);
Mockito.when(mockQueue.getPolicy()).thenReturn(SchedulingPolicy
.getInstance(FifoPolicy.class));
verifyHeadroom(schedulerApp,
min(queueStarvation.getMemory(),
clusterAvailable.getMemory(),
queueMaxResourcesAvailable.getMemory()),
Math.min(
clusterAvailable.getVirtualCores(),
queueMaxResourcesAvailable.getVirtualCores())
);
}
private static int min(int value1, int value2, int value3) {
return Math.min(Math.min(value1, value2), value3);
}
protected void verifyHeadroom(FSAppAttempt schedulerApp,
int expectedMemory, int expectedCPU) {
Resource headroom = schedulerApp.getHeadroom();
assertEquals(expectedMemory, headroom.getMemory());
assertEquals(expectedCPU, headroom.getVirtualCores());
}
}