/**
* 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
* <p/>
* http://www.apache.org/licenses/LICENSE-2.0
* <p/>
* 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.ambari.server.controller.metrics.timeline.cache;
import java.util.HashSet;
import java.util.Set;
import java.util.TreeMap;
import org.apache.ambari.server.controller.internal.TemporalInfoImpl;
import org.apache.ambari.server.controller.spi.TemporalInfo;
import org.apache.hadoop.metrics2.sink.timeline.TimelineMetric;
import org.apache.hadoop.metrics2.sink.timeline.TimelineMetrics;
import org.junit.Assert;
import org.junit.Test;
import net.sf.ehcache.pool.sizeof.ReflectionSizeOf;
import net.sf.ehcache.pool.sizeof.SizeOf;
public class TimelineMetricCacheSizingTest {
SizeOf reflectionSizeOf = new ReflectionSizeOf();
private TimelineMetric getSampleTimelineMetric(String metricName) {
TimelineMetric metric = new TimelineMetric();
metric.setMetricName(metricName);
metric.setAppId("KAFKA_BROKER");
metric.setInstanceId("NULL");
metric.setHostName("my.privatehostname.of.average.length");
metric.setTimestamp(System.currentTimeMillis());
metric.setStartTime(System.currentTimeMillis());
metric.setType("LONG");
// JSON dser gives a LinkedHashMap
TreeMap<Long, Double> valueMap = new TreeMap<>();
long now = System.currentTimeMillis();
for (int i = 0; i < 50000; i++) {
valueMap.put(new Long(now + i), new Double(1.0 + i));
}
metric.setMetricValues(valueMap);
return metric;
}
@Test
public void testTimelineMetricCacheSizing() throws Exception {
Set<String> metricNames = new HashSet<>();
String metric1 = "prefix1.suffix1.suffix2.actualNamePrefix.longMetricName1";
String metric2 = "prefix1.suffix1.suffix2.actualNamePrefix.longMetricName2";
String metric3 = "prefix1.suffix1.suffix2.actualNamePrefix.longMetricName3";
String metric4 = "prefix1.suffix1.suffix2.actualNamePrefix.longMetricName4";
String metric5 = "prefix1.suffix1.suffix2.actualNamePrefix.longMetricName5";
String metric6 = "prefix1.suffix1.suffix2.actualNamePrefix.longMetricName6";
metricNames.add(metric1);
metricNames.add(metric2);
metricNames.add(metric3);
metricNames.add(metric4);
metricNames.add(metric5);
metricNames.add(metric6);
long now = System.currentTimeMillis();
TemporalInfo temporalInfo = new TemporalInfoImpl(now - 1000, now, 15);
TimelineAppMetricCacheKey key = new TimelineAppMetricCacheKey(
metricNames, "KAFKA_BROKER", temporalInfo);
// Some random spec
key.setSpec("http://104.196.94.129:6188/ws/v1/timeline/metrics?metricNames=" +
"jvm.JvmMetrics.MemHeapCommittedM&appId=RESOURCEMANAGER&" +
"startTime=1439522640000&endTime=1440127440000&precision=hours");
TimelineMetrics metrics = new TimelineMetrics();
metrics.getMetrics().add(getSampleTimelineMetric(metric1));
metrics.getMetrics().add(getSampleTimelineMetric(metric2));
metrics.getMetrics().add(getSampleTimelineMetric(metric3));
metrics.getMetrics().add(getSampleTimelineMetric(metric4));
metrics.getMetrics().add(getSampleTimelineMetric(metric5));
metrics.getMetrics().add(getSampleTimelineMetric(metric6));
TimelineMetricsCacheValue value = new TimelineMetricsCacheValue(now -
1000, now, metrics, null);
TimelineMetricsCacheSizeOfEngine customSizeOfEngine = new TimelineMetricsCacheSizeOfEngine();
long bytesFromReflectionEngine =
reflectionSizeOf.deepSizeOf(50000, false, key).getCalculated() +
reflectionSizeOf.deepSizeOf(50000, false, value).getCalculated();
long bytesFromCustomSizeOfEngine = customSizeOfEngine.sizeOf(key, value, null).getCalculated();
long sampleSizeInMB = bytesFromReflectionEngine / (1024 * 1024);
long discrepancyInKB = Math.abs(bytesFromCustomSizeOfEngine - bytesFromReflectionEngine) / 1024;
Assert.assertTrue("Sample size is " + sampleSizeInMB + ", expected to be" +
"greater that 10 MB", sampleSizeInMB > 10);
Assert.assertTrue("Discrepancy in values is " + discrepancyInKB + ", " +
"expected to be less than 10K. " + "Bytes from reflection = " +
bytesFromReflectionEngine + ", bytes from custom sizing engine = " +
bytesFromCustomSizeOfEngine, discrepancyInKB < 10);
}
}