TestTTMemoryReporting.java
上传用户:quxuerui
上传日期:2018-01-08
资源大小:41811k
文件大小:9k
- /**
- * 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.mapred;
- import java.io.IOException;
- import java.util.List;
- import org.apache.commons.logging.Log;
- import org.apache.commons.logging.LogFactory;
- import org.apache.hadoop.conf.Configuration;
- import org.apache.hadoop.examples.SleepJob;
- import org.apache.hadoop.fs.FileSystem;
- import org.apache.hadoop.hdfs.MiniDFSCluster;
- import org.apache.hadoop.util.LinuxMemoryCalculatorPlugin;
- import org.apache.hadoop.util.MemoryCalculatorPlugin;
- import org.apache.hadoop.util.ToolRunner;
- import junit.framework.TestCase;
- /**
- * This test class tests the functionality related to configuring, reporting
- * and computing memory related parameters in a Map/Reduce cluster.
- *
- * Each test sets up a {@link MiniMRCluster} with a locally defined
- * {@link org.apache.hadoop.mapred.TaskScheduler}. This scheduler validates
- * the memory related configuration is correctly computed and reported from
- * the tasktracker in
- * {@link org.apache.hadoop.mapred.TaskScheduler#assignTasks(TaskTrackerStatus)}.
- */
- public class TestTTMemoryReporting extends TestCase {
- static final Log LOG = LogFactory.getLog(TestTTMemoryReporting.class);
-
- private MiniDFSCluster miniDFSCluster;
- private MiniMRCluster miniMRCluster;
- /**
- * Fake scheduler to test the proper reporting of memory values by TT
- */
- public static class FakeTaskScheduler extends JobQueueTaskScheduler {
-
- private boolean hasPassed = true;
- private String message;
-
- public FakeTaskScheduler() {
- super();
- }
-
- public boolean hasTestPassed() {
- return hasPassed;
- }
-
- public String getFailureMessage() {
- return message;
- }
-
- @Override
- public List<Task> assignTasks(TaskTrackerStatus status)
- throws IOException {
- long totalVirtualMemoryOnTT =
- getConf().getLong("totalVmemOnTT", JobConf.DISABLED_MEMORY_LIMIT);
- long totalPhysicalMemoryOnTT =
- getConf().getLong("totalPmemOnTT", JobConf.DISABLED_MEMORY_LIMIT);
- long virtualMemoryReservedOnTT =
- getConf().getLong("reservedVmemOnTT", JobConf.DISABLED_MEMORY_LIMIT);
- long physicalMemoryReservedOnTT =
- getConf().getLong("reservedPmemOnTT", JobConf.DISABLED_MEMORY_LIMIT);
- long reportedTotalVirtualMemoryOnTT =
- status.getResourceStatus().getTotalVirtualMemory();
- long reportedTotalPhysicalMemoryOnTT =
- status.getResourceStatus().getTotalPhysicalMemory();
- long reportedVirtualMemoryReservedOnTT =
- status.getResourceStatus().getReservedTotalMemory();
- long reportedPhysicalMemoryReservedOnTT =
- status.getResourceStatus().getReservedPhysicalMemory();
- message =
- "expected memory values : (totalVirtualMemoryOnTT, totalPhysicalMemoryOnTT, "
- + "virtualMemoryReservedOnTT, physicalMemoryReservedOnTT) = ("
- + totalVirtualMemoryOnTT + ", " + totalPhysicalMemoryOnTT + ", "
- + virtualMemoryReservedOnTT + ", " + physicalMemoryReservedOnTT
- + ")";
- message +=
- "nreported memory values : (totalVirtualMemoryOnTT, totalPhysicalMemoryOnTT, "
- + "virtualMemoryReservedOnTT, physicalMemoryReservedOnTT) = ("
- + reportedTotalVirtualMemoryOnTT
- + ", "
- + reportedTotalPhysicalMemoryOnTT
- + ", "
- + reportedVirtualMemoryReservedOnTT
- + ", "
- + reportedPhysicalMemoryReservedOnTT + ")";
- LOG.info(message);
- if (totalVirtualMemoryOnTT != reportedTotalVirtualMemoryOnTT
- || totalPhysicalMemoryOnTT != reportedTotalPhysicalMemoryOnTT
- || virtualMemoryReservedOnTT != reportedVirtualMemoryReservedOnTT
- || physicalMemoryReservedOnTT != reportedPhysicalMemoryReservedOnTT) {
- hasPassed = false;
- }
- return super.assignTasks(status);
- }
- }
- /**
- * Test that verifies default values are configured and reported correctly.
- *
- * @throws Exception
- */
- public void testDefaultMemoryValues()
- throws Exception {
- JobConf conf = new JobConf();
- try {
- // Memory values are disabled by default.
- conf.setClass(
- TaskTracker.MAPRED_TASKTRACKER_MEMORY_CALCULATOR_PLUGIN_PROPERTY,
- DummyMemoryCalculatorPlugin.class, MemoryCalculatorPlugin.class);
- setUpCluster(conf);
- runSleepJob();
- verifyTestResults();
- } finally {
- tearDownCluster();
- }
- }
- /**
- * Test that verifies that configured values are reported correctly.
- *
- * @throws Exception
- */
- public void testConfiguredMemoryValues()
- throws Exception {
- JobConf conf = new JobConf();
- conf.setLong("totalVmemOnTT", 4 * 1024 * 1024 * 1024L);
- conf.setLong("totalPmemOnTT", 2 * 1024 * 1024 * 1024L);
- conf.setLong("reservedVmemOnTT", 1 * 1024 * 1024 * 1024L);
- conf.setLong("reservedPmemOnTT", 512 * 1024 * 1024L);
- conf.setClass(
- TaskTracker.MAPRED_TASKTRACKER_MEMORY_CALCULATOR_PLUGIN_PROPERTY,
- DummyMemoryCalculatorPlugin.class, MemoryCalculatorPlugin.class);
- conf.setLong(DummyMemoryCalculatorPlugin.MAXVMEM_TESTING_PROPERTY,
- 4 * 1024 * 1024 * 1024L);
- conf.setLong(DummyMemoryCalculatorPlugin.MAXPMEM_TESTING_PROPERTY,
- 2 * 1024 * 1024 * 1024L);
- conf.setLong(
- TaskTracker.MAPRED_TASKTRACKER_VMEM_RESERVED_PROPERTY,
- 1 * 1024 * 1024 * 1024L);
- conf.setLong(
- TaskTracker.MAPRED_TASKTRACKER_PMEM_RESERVED_PROPERTY,
- 512 * 1024 * 1024L);
- try {
- setUpCluster(conf);
- runSleepJob();
- verifyTestResults();
- } finally {
- tearDownCluster();
- }
- }
- /**
- * Test that verifies that total memory values are calculated and reported
- * correctly.
- *
- * @throws Exception
- */
- public void testMemoryValuesOnLinux()
- throws Exception {
- if (!System.getProperty("os.name").startsWith("Linux")) {
- return;
- }
- JobConf conf = new JobConf();
- LinuxMemoryCalculatorPlugin plugin = new LinuxMemoryCalculatorPlugin();
- conf.setLong("totalVmemOnTT", plugin.getVirtualMemorySize());
- conf.setLong("totalPmemOnTT", plugin.getPhysicalMemorySize());
- conf.setLong("reservedVmemOnTT", 1 * 1024 * 1024 * 1024L);
- conf.setLong("reservedPmemOnTT", 512 * 1024 * 1024L);
- conf.setLong(
- TaskTracker.MAPRED_TASKTRACKER_VMEM_RESERVED_PROPERTY,
- 1 * 1024 * 1024 * 1024L);
- conf.setLong(
- TaskTracker.MAPRED_TASKTRACKER_PMEM_RESERVED_PROPERTY,
- 512 * 1024 * 1024L);
- try {
- setUpCluster(conf);
- runSleepJob();
- verifyTestResults();
- } finally {
- tearDownCluster();
- }
- }
- private void setUpCluster(JobConf conf)
- throws Exception {
- conf.setClass("mapred.jobtracker.taskScheduler",
- TestTTMemoryReporting.FakeTaskScheduler.class,
- TaskScheduler.class);
- miniDFSCluster = new MiniDFSCluster(conf, 1, true, null);
- FileSystem fileSys = miniDFSCluster.getFileSystem();
- String namenode = fileSys.getUri().toString();
- miniMRCluster = new MiniMRCluster(1, namenode, 3,
- null, null, conf);
- }
-
- private void runSleepJob() throws Exception {
- Configuration conf = new Configuration();
- conf.set("mapred.job.tracker", "localhost:"
- + miniMRCluster.getJobTrackerPort());
- String[] args = { "-m", "1", "-r", "1",
- "-mt", "1000", "-rt", "1000" };
- ToolRunner.run(conf, new SleepJob(), args);
- }
- private void verifyTestResults() {
- FakeTaskScheduler scheduler =
- (FakeTaskScheduler)miniMRCluster.getJobTrackerRunner().
- getJobTracker().getTaskScheduler();
- assertTrue(scheduler.getFailureMessage(), scheduler.hasTestPassed());
- }
-
- private void tearDownCluster() {
- if (miniMRCluster != null) { miniMRCluster.shutdown(); }
- if (miniDFSCluster != null) { miniDFSCluster.shutdown(); }
- }
- }