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YARN-3727. For better error recovery, check if the directory exists before using it for localization. Contributed by Zhihai Xu

This commit is contained in:
Jason Lowe 2015-09-30 14:59:44 +00:00
parent 06abc57a90
commit 854d25b0c3
6 changed files with 94 additions and 22 deletions
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3
hadoop-yarn-project/CHANGES.txt
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@ -1005,6 +1005,9 @@ Release 2.7.2 - UNRELEASED
YARN-4180. AMLauncher does not retry on failures when talking to NM.
(adhoot)
YARN-3727. For better error recovery, check if the directory exists before
using it for localization. (Zhihai Xu via jlowe)
Release 2.7.1 - 2015-07-06
INCOMPATIBLE CHANGES

3
hadoop-yarn-project/hadoop-yarn/hadoop-yarn-server/hadoop-yarn-server-nodemanager/src/main/java/org/apache/hadoop/yarn/server/nodemanager/containermanager/localizer/LocalResourcesTracker.java
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@ -33,7 +33,8 @@ interface LocalResourcesTracker
boolean remove(LocalizedResource req, DeletionService delService);
Path getPathForLocalization(LocalResourceRequest req, Path localDirPath);
Path getPathForLocalization(LocalResourceRequest req, Path localDirPath,
DeletionService delService);
String getUser();

24
hadoop-yarn-project/hadoop-yarn/hadoop-yarn-server/hadoop-yarn-server-nodemanager/src/main/java/org/apache/hadoop/yarn/server/nodemanager/containermanager/localizer/LocalResourcesTrackerImpl.java
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@ -440,10 +440,12 @@ public Iterator<LocalizedResource> iterator() {
* @param {@link LocalResourceRequest} Resource localization request to
* localize the resource.
* @param {@link Path} local directory path
* @param {@link DeletionService} Deletion Service to delete existing
* path for localization.
*/
@Override
public Path
getPathForLocalization(LocalResourceRequest req, Path localDirPath) {
public Path getPathForLocalization(LocalResourceRequest req,
Path localDirPath, DeletionService delService) {
Path rPath = localDirPath;
if (useLocalCacheDirectoryManager && localDirPath != null) {
@ -463,8 +465,22 @@ public Iterator<LocalizedResource> iterator() {
inProgressLocalResourcesMap.put(req, rPath);
}
rPath = new Path(rPath,
Long.toString(uniqueNumberGenerator.incrementAndGet()));
while (true) {
Path uniquePath = new Path(rPath,
Long.toString(uniqueNumberGenerator.incrementAndGet()));
File file = new File(uniquePath.toUri().getRawPath());
if (!file.exists()) {
rPath = uniquePath;
break;
}
// If the directory already exists, delete it and move to next one.
LOG.warn("Directory " + uniquePath + " already exists, " +
"try next one.");
if (delService != null) {
delService.delete(getUser(), uniquePath);
}
}
Path localPath = new Path(rPath, req.getPath().getName());
LocalizedResource rsrc = localrsrc.get(req);
rsrc.setLocalPath(localPath);

5
hadoop-yarn-project/hadoop-yarn/hadoop-yarn-server/hadoop-yarn-server-nodemanager/src/main/java/org/apache/hadoop/yarn/server/nodemanager/containermanager/localizer/ResourceLocalizationService.java
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@ -830,7 +830,8 @@ public void addResource(LocalizerResourceRequestEvent request) {
+ ContainerLocalizer.FILECACHE,
ContainerLocalizer.getEstimatedSize(resource), true);
Path publicDirDestPath =
publicRsrc.getPathForLocalization(key, publicRootPath);
publicRsrc.getPathForLocalization(key, publicRootPath,
delService);
if (!publicDirDestPath.getParent().equals(publicRootPath)) {
DiskChecker.checkDir(new File(publicDirDestPath.toUri().getPath()));
}
@ -1116,7 +1117,7 @@ private Path getPathForLocalization(LocalResource rsrc) throws IOException,
dirsHandler.getLocalPathForWrite(cacheDirectory,
ContainerLocalizer.getEstimatedSize(rsrc), false);
return tracker.getPathForLocalization(new LocalResourceRequest(rsrc),
dirPath);
dirPath, delService);
}
@Override

65
hadoop-yarn-project/hadoop-yarn/hadoop-yarn-server/hadoop-yarn-server-nodemanager/src/test/java/org/apache/hadoop/yarn/server/nodemanager/containermanager/localizer/TestLocalResourcesTrackerImpl.java
View File

@ -35,6 +35,7 @@
import java.util.concurrent.ConcurrentMap;
import org.apache.hadoop.conf.Configuration;
import org.apache.hadoop.fs.FileContext;
import org.apache.hadoop.fs.Path;
import org.apache.hadoop.yarn.api.records.ApplicationId;
import org.apache.hadoop.yarn.api.records.ContainerId;
@ -427,7 +428,7 @@ public void testHierarchicalLocalCacheDirectories() {
// Simulate the process of localization of lr1
// NOTE: Localization path from tracker has resource ID at end
Path hierarchicalPath1 =
tracker.getPathForLocalization(lr1, localDir).getParent();
tracker.getPathForLocalization(lr1, localDir, null).getParent();
// Simulate lr1 getting localized
ResourceLocalizedEvent rle1 =
new ResourceLocalizedEvent(lr1,
@ -444,7 +445,7 @@ public void testHierarchicalLocalCacheDirectories() {
tracker.handle(reqEvent2);
Path hierarchicalPath2 =
tracker.getPathForLocalization(lr2, localDir).getParent();
tracker.getPathForLocalization(lr2, localDir, null).getParent();
// localization failed.
ResourceFailedLocalizationEvent rfe2 =
new ResourceFailedLocalizationEvent(
@ -463,7 +464,7 @@ public void testHierarchicalLocalCacheDirectories() {
LocalResourceVisibility.PUBLIC, lc1);
tracker.handle(reqEvent3);
Path hierarchicalPath3 =
tracker.getPathForLocalization(lr3, localDir).getParent();
tracker.getPathForLocalization(lr3, localDir, null).getParent();
// localization successful
ResourceLocalizedEvent rle3 =
new ResourceLocalizedEvent(lr3, new Path(hierarchicalPath3.toUri()
@ -542,7 +543,8 @@ public void testStateStoreSuccessfulLocalization() throws Exception {
dispatcher.await();
// Simulate the process of localization of lr1
Path hierarchicalPath1 = tracker.getPathForLocalization(lr1, localDir);
Path hierarchicalPath1 = tracker.getPathForLocalization(lr1, localDir,
null);
ArgumentCaptor<LocalResourceProto> localResourceCaptor =
ArgumentCaptor.forClass(LocalResourceProto.class);
@ -622,7 +624,8 @@ public void testStateStoreFailedLocalization() throws Exception {
dispatcher.await();
// Simulate the process of localization of lr1
Path hierarchicalPath1 = tracker.getPathForLocalization(lr1, localDir);
Path hierarchicalPath1 = tracker.getPathForLocalization(lr1, localDir,
null);
ArgumentCaptor<LocalResourceProto> localResourceCaptor =
ArgumentCaptor.forClass(LocalResourceProto.class);
@ -691,7 +694,8 @@ public void testRecoveredResource() throws Exception {
LocalResourceVisibility.APPLICATION, lc2);
tracker.handle(reqEvent2);
dispatcher.await();
Path hierarchicalPath2 = tracker.getPathForLocalization(lr2, localDir);
Path hierarchicalPath2 = tracker.getPathForLocalization(lr2, localDir,
null);
long localizedId2 = Long.parseLong(hierarchicalPath2.getName());
Assert.assertEquals(localizedId1 + 1, localizedId2);
} finally {
@ -785,6 +789,49 @@ public void testRecoveredResourceWithDirCacheMgr() throws Exception {
}
}
@Test
@SuppressWarnings("unchecked")
public void testGetPathForLocalization() throws Exception {
FileContext lfs = FileContext.getLocalFSFileContext();
Path base_path = new Path("target",
TestLocalResourcesTrackerImpl.class.getSimpleName());
final String user = "someuser";
final ApplicationId appId = ApplicationId.newInstance(1, 1);
Configuration conf = new YarnConfiguration();
DrainDispatcher dispatcher = null;
dispatcher = createDispatcher(conf);
EventHandler<LocalizerEvent> localizerEventHandler =
mock(EventHandler.class);
EventHandler<LocalizerEvent> containerEventHandler =
mock(EventHandler.class);
dispatcher.register(LocalizerEventType.class, localizerEventHandler);
dispatcher.register(ContainerEventType.class, containerEventHandler);
NMStateStoreService stateStore = mock(NMStateStoreService.class);
DeletionService delService = mock(DeletionService.class);
try {
LocalResourceRequest req1 = createLocalResourceRequest(user, 1, 1,
LocalResourceVisibility.PUBLIC);
LocalizedResource lr1 = createLocalizedResource(req1, dispatcher);
ConcurrentMap<LocalResourceRequest, LocalizedResource> localrsrc =
new ConcurrentHashMap<LocalResourceRequest, LocalizedResource>();
localrsrc.put(req1, lr1);
LocalResourcesTrackerImpl tracker = new LocalResourcesTrackerImpl(user,
appId, dispatcher, localrsrc, true, conf, stateStore, null);
Path conflictPath = new Path(base_path, "10");
Path qualifiedConflictPath = lfs.makeQualified(conflictPath);
lfs.mkdir(qualifiedConflictPath, null, true);
Path rPath = tracker.getPathForLocalization(req1, base_path,
delService);
Assert.assertFalse(lfs.util().exists(rPath));
verify(delService, times(1)).delete(eq(user), eq(conflictPath));
} finally {
lfs.delete(base_path, true);
if (dispatcher != null) {
dispatcher.stop();
}
}
}
@SuppressWarnings("unchecked")
@Test
public void testResourcePresentInGoodDir() throws IOException {
@ -832,8 +879,10 @@ public void testResourcePresentInGoodDir() throws IOException {
tracker.handle(req21Event);
dispatcher.await();
// Localize resource1
Path p1 = tracker.getPathForLocalization(req1, new Path("/tmp/somedir1"));
Path p2 = tracker.getPathForLocalization(req2, new Path("/tmp/somedir2"));
Path p1 = tracker.getPathForLocalization(req1,
new Path("/tmp/somedir1"), null);
Path p2 = tracker.getPathForLocalization(req2,
new Path("/tmp/somedir2"), null);
ResourceLocalizedEvent rle1 = new ResourceLocalizedEvent(req1, p1, 1);
tracker.handle(rle1);
ResourceLocalizedEvent rle2 = new ResourceLocalizedEvent(req2, p2, 1);

16
hadoop-yarn-project/hadoop-yarn/hadoop-yarn-server/hadoop-yarn-server-nodemanager/src/test/java/org/apache/hadoop/yarn/server/nodemanager/containermanager/localizer/TestResourceLocalizationService.java
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@ -624,29 +624,31 @@ public void testRecovery() throws Exception {
// Simulate start of localization for all resources
privTracker1.getPathForLocalization(privReq1,
dirsHandler.getLocalPathForWrite(
ContainerLocalizer.USERCACHE + user1));
ContainerLocalizer.USERCACHE + user1), null);
privTracker1.getPathForLocalization(privReq2,
dirsHandler.getLocalPathForWrite(
ContainerLocalizer.USERCACHE + user1));
ContainerLocalizer.USERCACHE + user1), null);
LocalizedResource privLr1 = privTracker1.getLocalizedResource(privReq1);
LocalizedResource privLr2 = privTracker1.getLocalizedResource(privReq2);
appTracker1.getPathForLocalization(appReq1,
dirsHandler.getLocalPathForWrite(
ContainerLocalizer.APPCACHE + appId1));
ContainerLocalizer.APPCACHE + appId1), null);
LocalizedResource appLr1 = appTracker1.getLocalizedResource(appReq1);
appTracker2.getPathForLocalization(appReq2,
dirsHandler.getLocalPathForWrite(
ContainerLocalizer.APPCACHE + appId2));
ContainerLocalizer.APPCACHE + appId2), null);
LocalizedResource appLr2 = appTracker2.getLocalizedResource(appReq2);
appTracker2.getPathForLocalization(appReq3,
dirsHandler.getLocalPathForWrite(
ContainerLocalizer.APPCACHE + appId2));
ContainerLocalizer.APPCACHE + appId2), null);
LocalizedResource appLr3 = appTracker2.getLocalizedResource(appReq3);
pubTracker.getPathForLocalization(pubReq1,
dirsHandler.getLocalPathForWrite(ContainerLocalizer.FILECACHE));
dirsHandler.getLocalPathForWrite(ContainerLocalizer.FILECACHE),
null);
LocalizedResource pubLr1 = pubTracker.getLocalizedResource(pubReq1);
pubTracker.getPathForLocalization(pubReq2,
dirsHandler.getLocalPathForWrite(ContainerLocalizer.FILECACHE));
dirsHandler.getLocalPathForWrite(ContainerLocalizer.FILECACHE),
null);
LocalizedResource pubLr2 = pubTracker.getLocalizedResource(pubReq2);
// Simulate completion of localization for most resources with