HDFS-14921. Remove SuperUser Check in Setting Storage Policy in FileStatus During Listing. Contributed by Ayush Saxena.

hadoop-hdfs-project/hadoop-hdfs/src/main/java/org/apache/hadoop/hdfs/server/namenode/FSDirStatAndListingOp.java

@@ -73,14 +73,12 @@ static DirectoryListing getListingInt(FSDirectory fsd, FSPermissionChecker pc,
       }
     }
 
-    boolean isSuperUser = true;
     if (fsd.isPermissionEnabled()) {
       if (iip.getLastINode() != null && iip.getLastINode().isDirectory()) {
         fsd.checkPathAccess(pc, iip, FsAction.READ_EXECUTE);
       }
-      isSuperUser = pc.isSuperUser();
     }
-    return getListing(fsd, iip, startAfter, needLocation, isSuperUser);
+    return getListing(fsd, iip, startAfter, needLocation);
   }
 
   /**
@@ -210,11 +208,10 @@ private static byte getStoragePolicyID(byte inodePolicy, byte parentPolicy) {
    *            path
    * @param startAfter the name to start listing after
    * @param needLocation if block locations are returned
-   * @param includeStoragePolicy if storage policy is returned
    * @return a partial listing starting after startAfter
    */
   private static DirectoryListing getListing(FSDirectory fsd, INodesInPath iip,
-      byte[] startAfter, boolean needLocation, boolean includeStoragePolicy)
+      byte[] startAfter, boolean needLocation)
       throws IOException {
     if (FSDirectory.isExactReservedName(iip.getPathComponents())) {
       return getReservedListing(fsd);
@@ -231,9 +228,7 @@ private static DirectoryListing getListing(FSDirectory fsd, INodesInPath iip,
         return null;
       }
 
-      byte parentStoragePolicy = includeStoragePolicy
+      byte parentStoragePolicy = targetNode.getStoragePolicyID();
-          ? targetNode.getStoragePolicyID()
-          : HdfsConstants.BLOCK_STORAGE_POLICY_ID_UNSPECIFIED;
 
       if (!targetNode.isDirectory()) {
         // return the file's status. note that the iip already includes the
@@ -255,7 +250,8 @@ private static DirectoryListing getListing(FSDirectory fsd, INodesInPath iip,
       HdfsFileStatus listing[] = new HdfsFileStatus[numOfListing];
       for (int i = 0; i < numOfListing && locationBudget > 0; i++) {
         INode child = contents.get(startChild+i);
-        byte childStoragePolicy = (includeStoragePolicy && !child.isSymlink())
+        byte childStoragePolicy =
+            !child.isSymlink()
                 ? getStoragePolicyID(child.getLocalStoragePolicyID(),
                     parentStoragePolicy)
             : parentStoragePolicy;

hadoop-hdfs-project/hadoop-hdfs/src/test/java/org/apache/hadoop/hdfs/TestDistributedFileSystem.java

@@ -79,6 +79,7 @@
 import org.apache.hadoop.fs.StorageStatistics.LongStatistic;
 import org.apache.hadoop.fs.StorageType;
 import org.apache.hadoop.fs.contract.ContractTestUtils;
+import org.apache.hadoop.fs.permission.FsAction;
 import org.apache.hadoop.fs.permission.FsPermission;
 import org.apache.hadoop.hdfs.DistributedFileSystem.HdfsDataOutputStreamBuilder;
 import org.apache.hadoop.hdfs.client.HdfsClientConfigKeys;
@@ -90,6 +91,7 @@
 import org.apache.hadoop.hdfs.protocol.CachePoolInfo;
 import org.apache.hadoop.hdfs.protocol.ErasureCodingPolicy;
 import org.apache.hadoop.hdfs.protocol.HdfsConstants;
+import org.apache.hadoop.hdfs.protocol.HdfsFileStatus;
 import org.apache.hadoop.hdfs.protocol.HdfsConstants.RollingUpgradeAction;
 import org.apache.hadoop.hdfs.protocol.HdfsConstants.SafeModeAction;
 import org.apache.hadoop.hdfs.protocol.HdfsConstants.StoragePolicySatisfierMode;
@@ -1879,6 +1881,34 @@ public Void run() throws Exception {
     }
   }
 
+  @Test
+  public void testListingStoragePolicyNonSuperUser() throws Exception {
+    HdfsConfiguration conf = new HdfsConfiguration();
+    try (MiniDFSCluster cluster = new MiniDFSCluster.Builder(conf).build()) {
+      cluster.waitActive();
+      final DistributedFileSystem dfs = cluster.getFileSystem();
+      Path dir = new Path("/dir");
+      dfs.mkdirs(dir);
+      dfs.setPermission(dir,
+          new FsPermission(FsAction.ALL, FsAction.ALL, FsAction.ALL));
+
+      // Create a non-super user.
+      UserGroupInformation user = UserGroupInformation.createUserForTesting(
+          "Non_SuperUser", new String[] {"Non_SuperGroup"});
+
+      DistributedFileSystem userfs = (DistributedFileSystem) user.doAs(
+          (PrivilegedExceptionAction<FileSystem>) () -> FileSystem.get(conf));
+      Path sDir = new Path("/dir/sPolicy");
+      userfs.mkdirs(sDir);
+      userfs.setStoragePolicy(sDir, "COLD");
+      HdfsFileStatus[] list = userfs.getClient()
+          .listPaths(dir.toString(), HdfsFileStatus.EMPTY_NAME)
+          .getPartialListing();
+      assertEquals(HdfsConstants.COLD_STORAGE_POLICY_ID,
+          list[0].getStoragePolicy());
+    }
+  }
+
   @Test
   public void testRemoveErasureCodingPolicy() throws Exception {
     Configuration conf = getTestConfiguration();