/**
* 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.hdfs.storageservice;
import org.apache.hadoop.conf.Configuration;
import org.apache.hadoop.hdfs.MiniAvatarCluster;
import org.apache.hadoop.hdfs.protocol.FSConstants;
import org.apache.hadoop.hdfs.storageservice.NNLatencyBenchmark.MeanDevAccumulator;
import org.apache.hadoop.hdfs.storageservice.NNLatencyBenchmark.TimedCallable;
import org.apache.hadoop.hdfs.storageservice.server.ClientProxyService;
import org.apache.hadoop.hdfs.storageservice.server.ClientProxyService.ClientProxyCommons;
import org.apache.hadoop.io.IOUtils;
import org.junit.AfterClass;
import org.junit.BeforeClass;
import org.junit.Test;
import java.io.IOException;
import static org.junit.Assert.assertEquals;
public class TestNNLatencyBenchmark {
private MiniAvatarCluster cluster;
private ClientProxyService proxyService;
private NNLatencyBenchmark benchmark;
@BeforeClass
public static void setUpClass() throws Exception {
MiniAvatarCluster.createAndStartZooKeeper();
}
public void setUp() throws Exception {
try {
Configuration conf = new Configuration();
// Bind port automatically
conf.setInt(StorageServiceConfigKeys.PROXY_THRIFT_PORT_KEY, 0);
conf.setInt(StorageServiceConfigKeys.PROXY_RPC_PORT_KEY, 0);
cluster = new MiniAvatarCluster(conf, 2, true, null, null, 1, true);
proxyService = new ClientProxyService(new ClientProxyCommons(conf, conf.get(
FSConstants.DFS_CLUSTER_NAME)));
benchmark = new NNLatencyBenchmark();
benchmark.setConf(conf);
} catch (IOException e) {
tearDown();
throw e;
}
}
public void tearDown() throws IOException {
if (proxyService != null) {
proxyService.getCommons().metrics.dump();
}
IOUtils.cleanup(null, proxyService);
try {
if (cluster != null) {
cluster.shutDown();
}
} catch (Exception e) {
}
}
@AfterClass
public static void tearDownClass() throws Exception {
MiniAvatarCluster.shutDownZooKeeper();
}
@Test
public void testMeanDevAccumulator() {
MeanDevAccumulator acc0 = new MeanDevAccumulator();
for (int i : new int[]{2, 4, 4, 4, 5, 5, 5, 7, 9}) {
acc0.add(i);
}
assertEquals(5, acc0.getMean(), 1e-6);
assertEquals(4, acc0.getVariance(), 1e-6);
assertEquals(2, acc0.getStdDev(), 1e-6);
}
@Test
public void testTimedCallable() throws Exception {
long start = System.nanoTime();
double time = new TimedCallable() {
@Override
protected void callTimed() throws Exception {
Thread.sleep(337);
}
}.call();
long end = System.nanoTime();
assertEquals(337, (end - start) / 1e6, 30);
assertEquals(337, time, 10);
}
@Test
public void testSimpleRun() throws Exception {
setUp();
try {
NNLatencyBenchmark.WARMUP_SAMPLES = 5;
NNLatencyBenchmark.MEASURED_SAMPLES = 50;
assertEquals(0, benchmark.run(new String[]{"localhost", "" + proxyService.getThriftPort(),
"" + proxyService.getRPCPort()}));
} finally
{
tearDown();
}
}
}