/**
* 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.localizer;
import org.junit.Assert;
import org.apache.hadoop.fs.Path;
import org.apache.hadoop.yarn.conf.YarnConfiguration;
import org.apache.hadoop.yarn.exceptions.YarnRuntimeException;
import org.apache.hadoop.yarn.server.nodemanager.NodeManager.NMContext;
import org.apache.hadoop.yarn.server.nodemanager.containermanager.localizer.LocalCacheDirectoryManager.Directory;
import org.apache.hadoop.yarn.server.nodemanager.recovery.NMNullStateStoreService;
import org.apache.hadoop.yarn.server.nodemanager.security.NMContainerTokenSecretManager;
import org.apache.hadoop.yarn.server.nodemanager.security.NMTokenSecretManagerInNM;
import org.apache.hadoop.yarn.server.security.ApplicationACLsManager;
import org.junit.Test;
public class TestLocalCacheDirectoryManager {
@Test(timeout = 10000)
public void testHierarchicalSubDirectoryCreation() {
// setting per directory file limit to 1.
YarnConfiguration conf = new YarnConfiguration();
conf.set(YarnConfiguration.NM_LOCAL_CACHE_MAX_FILES_PER_DIRECTORY, "37");
LocalCacheDirectoryManager hDir = new LocalCacheDirectoryManager(conf);
// Test root directory path = ""
Assert.assertTrue(hDir.getRelativePathForLocalization().isEmpty());
// Testing path generation from "0" to "0/0/z/z"
for (int i = 1; i <= 37 * 36 * 36; i++) {
StringBuffer sb = new StringBuffer();
String num = Integer.toString(i - 1, 36);
if (num.length() == 1) {
sb.append(num.charAt(0));
} else {
sb.append(Integer.toString(
Integer.parseInt(num.substring(0, 1), 36) - 1, 36));
}
for (int j = 1; j < num.length(); j++) {
sb.append(Path.SEPARATOR).append(num.charAt(j));
}
Assert.assertEquals(sb.toString(), hDir.getRelativePathForLocalization());
}
String testPath1 = "4";
String testPath2 = "2";
/*
* Making sure directory "4" and "2" becomes non-full so that they are
* reused for future getRelativePathForLocalization() calls in the order
* they are freed.
*/
hDir.decrementFileCountForPath(testPath1);
hDir.decrementFileCountForPath(testPath2);
// After below call directory "4" should become full.
Assert.assertEquals(testPath1, hDir.getRelativePathForLocalization());
Assert.assertEquals(testPath2, hDir.getRelativePathForLocalization());
}
@Test(timeout = 10000)
public void testMinimumPerDirectoryFileLimit() {
YarnConfiguration conf = new YarnConfiguration();
conf.set(YarnConfiguration.NM_LOCAL_CACHE_MAX_FILES_PER_DIRECTORY, "1");
Exception e = null;
NMContext nmContext =
new NMContext(new NMContainerTokenSecretManager(conf),
new NMTokenSecretManagerInNM(), null,
new ApplicationACLsManager(conf), new NMNullStateStoreService());
ResourceLocalizationService service =
new ResourceLocalizationService(null, null, null, null, nmContext);
try {
service.init(conf);
} catch (Exception e1) {
e = e1;
}
Assert.assertNotNull(e);
Assert.assertEquals(YarnRuntimeException.class, e.getClass());
Assert.assertEquals(e.getMessage(),
YarnConfiguration.NM_LOCAL_CACHE_MAX_FILES_PER_DIRECTORY
+ " parameter is configured with a value less than 37.");
}
@Test(timeout = 1000)
public void testDirectoryStateChangeFromFullToNonFull() {
YarnConfiguration conf = new YarnConfiguration();
conf.set(YarnConfiguration.NM_LOCAL_CACHE_MAX_FILES_PER_DIRECTORY, "40");
LocalCacheDirectoryManager dir = new LocalCacheDirectoryManager(conf);
// checking for first four paths
String rootPath = "";
String firstSubDir = "0";
for (int i = 0; i < 4; i++) {
Assert.assertEquals(rootPath, dir.getRelativePathForLocalization());
}
// Releasing two files from the root directory.
dir.decrementFileCountForPath(rootPath);
dir.decrementFileCountForPath(rootPath);
// Space for two files should be available in root directory.
Assert.assertEquals(rootPath, dir.getRelativePathForLocalization());
Assert.assertEquals(rootPath, dir.getRelativePathForLocalization());
// As no space is now available in root directory so it should be from
// first sub directory
Assert.assertEquals(firstSubDir, dir.getRelativePathForLocalization());
}
@Test
public void testDirectoryConversion() {
for (int i = 0; i < 10000; ++i) {
String path = Directory.getRelativePath(i);
Assert.assertEquals("Incorrect conversion for " + i, i,
Directory.getDirectoryNumber(path));
}
}
@Test
public void testIncrementFileCountForPath() {
YarnConfiguration conf = new YarnConfiguration();
conf.setInt(YarnConfiguration.NM_LOCAL_CACHE_MAX_FILES_PER_DIRECTORY,
LocalCacheDirectoryManager.DIRECTORIES_PER_LEVEL + 2);
LocalCacheDirectoryManager mgr = new LocalCacheDirectoryManager(conf);
final String rootPath = "";
mgr.incrementFileCountForPath(rootPath);
Assert.assertEquals(rootPath, mgr.getRelativePathForLocalization());
Assert.assertFalse("root dir should be full",
rootPath.equals(mgr.getRelativePathForLocalization()));
// finish filling the other directory
mgr.getRelativePathForLocalization();
// free up space in the root dir
mgr.decrementFileCountForPath(rootPath);
mgr.decrementFileCountForPath(rootPath);
Assert.assertEquals(rootPath, mgr.getRelativePathForLocalization());
Assert.assertEquals(rootPath, mgr.getRelativePathForLocalization());
String otherDir = mgr.getRelativePathForLocalization();
Assert.assertFalse("root dir should be full", otherDir.equals(rootPath));
final String deepDir0 = "d/e/e/p/0";
final String deepDir1 = "d/e/e/p/1";
final String deepDir2 = "d/e/e/p/2";
final String deepDir3 = "d/e/e/p/3";
mgr.incrementFileCountForPath(deepDir0);
Assert.assertEquals(otherDir, mgr.getRelativePathForLocalization());
Assert.assertEquals(deepDir0, mgr.getRelativePathForLocalization());
Assert.assertEquals("total dir count incorrect after increment",
deepDir1, mgr.getRelativePathForLocalization());
mgr.incrementFileCountForPath(deepDir2);
mgr.incrementFileCountForPath(deepDir1);
mgr.incrementFileCountForPath(deepDir2);
Assert.assertEquals(deepDir3, mgr.getRelativePathForLocalization());
}
}