YARN-9557. Application fails in diskchecker when ReadWriteDiskValidator is configured. Contributed by Bilwa S T.

hadoop-yarn-project/hadoop-yarn/hadoop-yarn-server/hadoop-yarn-server-nodemanager/src/main/java/org/apache/hadoop/yarn/server/nodemanager/containermanager/localizer/ContainerLocalizer.java

@@ -130,13 +130,19 @@ public class ContainerLocalizer {
     this.localDirs = localDirs;
     this.localizerId = localizerId;
     this.recordFactory = recordFactory;
-    this.conf = new YarnConfiguration();
+    this.conf = initConfiguration();
     this.diskValidator = DiskValidatorFactory.getInstance(
         YarnConfiguration.DEFAULT_DISK_VALIDATOR);
     this.appCacheDirContextName = String.format(APPCACHE_CTXT_FMT, appId);
     this.pendingResources = new HashMap<LocalResource,Future<Path>>();
   }
 
+  @VisibleForTesting
+  @Private
+  Configuration initConfiguration() {
+    return new YarnConfiguration();
+  }
+
   @Private
   @VisibleForTesting
   public LocalizationProtocol getProxy(final InetSocketAddress nmAddr) {
@@ -246,7 +252,8 @@ public class ContainerLocalizer {
     if (rsrc.getVisibility() == LocalResourceVisibility.PRIVATE) {
       createParentDirs(destDirPath);
     }
-    diskValidator.checkStatus(new File(destDirPath.toUri().getRawPath()));
+    diskValidator
+        .checkStatus(new File(destDirPath.getParent().toUri().getRawPath()));
     return new FSDownloadWrapper(lfs, ugi, conf, destDirPath, rsrc);
   }
 

hadoop-yarn-project/hadoop-yarn/hadoop-yarn-server/hadoop-yarn-server-nodemanager/src/test/java/org/apache/hadoop/yarn/server/nodemanager/containermanager/localizer/TestContainerLocalizer.java

@@ -68,12 +68,14 @@ import org.apache.hadoop.security.Credentials;
 import org.apache.hadoop.security.UserGroupInformation;
 import org.apache.hadoop.security.token.Token;
 import org.apache.hadoop.test.GenericTestUtils;
+import org.apache.hadoop.util.DiskChecker.DiskErrorException;
 import org.apache.hadoop.util.Shell;
 import org.apache.hadoop.util.Shell.ShellCommandExecutor;
 import org.apache.hadoop.yarn.api.records.LocalResource;
 import org.apache.hadoop.yarn.api.records.LocalResourceType;
 import org.apache.hadoop.yarn.api.records.LocalResourceVisibility;
 import org.apache.hadoop.yarn.api.records.URL;
+import org.apache.hadoop.yarn.conf.YarnConfiguration;
 import org.apache.hadoop.yarn.exceptions.YarnException;
 import org.apache.hadoop.yarn.exceptions.YarnRuntimeException;
 import org.apache.hadoop.yarn.factories.RecordFactory;
@@ -239,6 +241,32 @@ public class TestContainerLocalizer {
     }
   }
 
+  @Test
+  public void testDiskCheckFailure() throws Exception {
+    Configuration conf = new Configuration();
+    conf.set(YarnConfiguration.DISK_VALIDATOR, "read-write");
+    FileContext lfs = FileContext.getLocalFSFileContext(conf);
+    Path fileCacheDir = lfs.makeQualified(new Path(basedir, "filecache"));
+    lfs.mkdir(fileCacheDir, FsPermission.getDefault(), true);
+    RecordFactory recordFactory = mock(RecordFactory.class);
+    ContainerLocalizer localizer = new ContainerLocalizer(lfs,
+        UserGroupInformation.getCurrentUser().getUserName(), "application_01",
+        "container_01", new ArrayList<>(), recordFactory) {
+      @Override
+      Configuration initConfiguration() {
+        return conf;
+      }
+    };
+    LocalResource rsrc = mock(LocalResource.class);
+    Path destDirPath = new Path(fileCacheDir, "11");
+    try {
+      localizer.download(destDirPath, rsrc,
+          UserGroupInformation.getCurrentUser());
+    } catch (DiskErrorException ex) {
+      fail(ex.getCause().toString());
+    }
+  }
+
   @Test
   @SuppressWarnings("unchecked")
   public void testLocalizerTokenIsGettingRemoved() throws Exception {