TestContainerMetrics.java
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* 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.nodemanager.containermanager.monitor;
import org.apache.hadoop.metrics2.AbstractMetric;
import org.apache.hadoop.metrics2.MetricsRecord;
import org.apache.hadoop.metrics2.impl.MetricsCollectorImpl;
import org.apache.hadoop.metrics2.impl.MetricsRecords;
import org.apache.hadoop.metrics2.impl.MetricsSystemImpl;
import org.apache.hadoop.yarn.api.records.ApplicationAttemptId;
import org.apache.hadoop.yarn.api.records.ApplicationId;
import org.apache.hadoop.yarn.api.records.ContainerId;
import org.junit.Assert;
import org.junit.Test;
import java.util.HashMap;
import java.util.HashSet;
import java.util.Map;
import java.util.Set;
import static org.junit.Assert.assertEquals;
import static org.junit.Assert.assertTrue;
import static org.mockito.Mockito.mock;
public class TestContainerMetrics {
@Test
public void testContainerMetricsFlow() throws InterruptedException {
final String ERR = "Error in number of records";
MetricsCollectorImpl collector = new MetricsCollectorImpl();
ContainerId containerId = mock(ContainerId.class);
ContainerMetrics metrics = ContainerMetrics.forContainer(containerId,
100, 1);
metrics.recordMemoryUsage(1024);
metrics.getMetrics(collector, true);
assertEquals(ERR, 0, collector.getRecords().size());
Thread.sleep(110);
metrics.getMetrics(collector, true);
assertEquals(ERR, 1, collector.getRecords().size());
collector.clear();
Thread.sleep(110);
metrics.getMetrics(collector, true);
assertEquals(ERR, 1, collector.getRecords().size());
collector.clear();
metrics.finished(false);
metrics.getMetrics(collector, true);
assertEquals(ERR, 1, collector.getRecords().size());
collector.clear();
metrics.getMetrics(collector, true);
assertEquals(ERR, 1, collector.getRecords().size());
collector.clear();
Thread.sleep(110);
metrics.getMetrics(collector, true);
assertEquals(ERR, 1, collector.getRecords().size());
}
@Test
public void testContainerMetricsLimit() throws InterruptedException {
final String ERR = "Error in number of records";
MetricsCollectorImpl collector = new MetricsCollectorImpl();
ContainerId containerId = mock(ContainerId.class);
ContainerMetrics metrics = ContainerMetrics.forContainer(containerId,
100, 1);
int anyPmemLimit = 1024;
int anyVmemLimit = 2048;
int anyVcores = 10;
long anyLaunchDuration = 20L;
long anyLocalizationDuration = 1000L;
String anyProcessId = "1234";
metrics.recordResourceLimit(anyVmemLimit, anyPmemLimit, anyVcores);
metrics.recordProcessId(anyProcessId);
metrics.recordStateChangeDurations(anyLaunchDuration,
anyLocalizationDuration);
Thread.sleep(110);
metrics.getMetrics(collector, true);
assertEquals(ERR, 1, collector.getRecords().size());
MetricsRecord record = collector.getRecords().get(0);
MetricsRecords.assertTag(record, ContainerMetrics.PROCESSID_INFO.name(),
anyProcessId);
MetricsRecords.assertMetric(record, ContainerMetrics
.PMEM_LIMIT_METRIC_NAME, anyPmemLimit);
MetricsRecords.assertMetric(record, ContainerMetrics.VMEM_LIMIT_METRIC_NAME, anyVmemLimit);
MetricsRecords.assertMetric(record, ContainerMetrics.VCORE_LIMIT_METRIC_NAME, anyVcores);
MetricsRecords.assertMetric(record,
ContainerMetrics.LAUNCH_DURATION_METRIC_NAME, anyLaunchDuration);
MetricsRecords.assertMetric(record,
ContainerMetrics.LOCALIZATION_DURATION_METRIC_NAME,
anyLocalizationDuration);
collector.clear();
}
@Test
public void testContainerMetricsFinished() throws InterruptedException {
MetricsSystemImpl system = new MetricsSystemImpl();
system.init("test");
ApplicationId appId = ApplicationId.newInstance(1234, 3);
ApplicationAttemptId appAttemptId =
ApplicationAttemptId.newInstance(appId, 4);
ContainerId containerId1 = ContainerId.newContainerId(appAttemptId, 1);
ContainerMetrics metrics1 = ContainerMetrics.forContainer(system,
containerId1, 1, 0);
ContainerId containerId2 = ContainerId.newContainerId(appAttemptId, 2);
ContainerMetrics metrics2 = ContainerMetrics.forContainer(system,
containerId2, 1, 0);
ContainerId containerId3 = ContainerId.newContainerId(appAttemptId, 3);
ContainerMetrics metrics3 = ContainerMetrics.forContainer(system,
containerId3, 1, 0);
metrics1.finished(false);
metrics2.finished(false);
system.sampleMetrics();
system.sampleMetrics();
Thread.sleep(100);
// verify metrics1 is unregistered
assertTrue(metrics1 != ContainerMetrics.forContainer(
system, containerId1, 1, 0));
// verify metrics2 is unregistered
assertTrue(metrics2 != ContainerMetrics.forContainer(
system, containerId2, 1, 0));
// verify metrics3 is still registered
assertTrue(metrics3 == ContainerMetrics.forContainer(
system, containerId3, 1, 0));
// YARN-5190: move stop() to the end to verify registering containerId1 and
// containerId2 won't get MetricsException thrown.
system.stop();
system.shutdown();
}
/**
* Run a test to submit values for actual memory usage and see if the
* histogram comes out correctly.
* @throws Exception
*/
@Test
public void testContainerMetricsHistogram() throws Exception {
// submit 2 values - 1024 and 2048. 75th, 90th, 95th and 99th percentiles
// will be 2048. 50th percentile will be 1536((1024+2048)/2)
// if we keep recording 1024 and 2048 in a loop, the 50th percentile
// will tend closer to 2048
Map<String, Long> expectedValues = new HashMap<>();
expectedValues.put("PMemUsageMBHistogram50thPercentileMBs", 1536L);
expectedValues.put("PMemUsageMBHistogram75thPercentileMBs", 2048L);
expectedValues.put("PMemUsageMBHistogram90thPercentileMBs", 2048L);
expectedValues.put("PMemUsageMBHistogram95thPercentileMBs", 2048L);
expectedValues.put("PMemUsageMBHistogram99thPercentileMBs", 2048L);
expectedValues.put("PCpuUsagePercentHistogram50thPercentilePercents", 0L);
expectedValues.put("PCpuUsagePercentHistogram75thPercentilePercents", 0L);
expectedValues.put("PCpuUsagePercentHistogram90thPercentilePercents", 0L);
expectedValues.put("PCpuUsagePercentHistogram95thPercentilePercents", 0L);
expectedValues.put("PCpuUsagePercentHistogram99thPercentilePercents", 0L);
Set<String> testResults = new HashSet<>();
int delay = 10;
int rolloverDelay = 1000;
MetricsCollectorImpl collector = new MetricsCollectorImpl();
ContainerId containerId = mock(ContainerId.class);
ContainerMetrics metrics =
ContainerMetrics.forContainer(containerId, delay, 0);
metrics.recordMemoryUsage(1024);
metrics.recordMemoryUsage(2048);
Thread.sleep(rolloverDelay + 10);
metrics.getMetrics(collector, true);
for (MetricsRecord record : collector.getRecords()) {
for (AbstractMetric metric : record.metrics()) {
String metricName = metric.name();
if (expectedValues.containsKey(metricName)) {
Long expectedValue = expectedValues.get(metricName);
Assert.assertEquals(
"Metric " + metricName + " doesn't have expected value",
expectedValue, metric.value());
testResults.add(metricName);
}
}
}
Assert.assertEquals(expectedValues.keySet(), testResults);
}
@Test
public void testContainerMetricsUpdateContainerPid() {
ContainerId containerId = mock(ContainerId.class);
ContainerMetrics metrics = ContainerMetrics.forContainer(containerId,
100, 1);
String origPid = "1234";
metrics.recordProcessId(origPid);
assertEquals(origPid, metrics.registry.getTag(
ContainerMetrics.PROCESSID_INFO.name()).value());
String newPid = "4321";
metrics.recordProcessId(newPid);
assertEquals(newPid, metrics.registry.getTag(
ContainerMetrics.PROCESSID_INFO.name()).value());
}
}