HDFS-11641. Reduce cost of audit logging by using FileStatus instead of HdfsFileStatus. Contributed by Daryn Sharp.

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

@@ -17,6 +17,7 @@
  */
 package org.apache.hadoop.hdfs.server.namenode;
 
+import org.apache.hadoop.fs.FileStatus;
 import org.apache.hadoop.fs.permission.AclEntry;
 import org.apache.hadoop.fs.permission.AclEntryScope;
 import org.apache.hadoop.fs.permission.AclEntryType;
@@ -25,7 +26,6 @@ import org.apache.hadoop.fs.permission.FsAction;
 import org.apache.hadoop.fs.permission.FsPermission;
 import org.apache.hadoop.hdfs.DFSConfigKeys;
 import org.apache.hadoop.hdfs.protocol.AclException;
-import org.apache.hadoop.hdfs.protocol.HdfsFileStatus;
 import org.apache.hadoop.hdfs.server.namenode.FSDirectory.DirOp;
 
 import java.io.IOException;
@@ -33,7 +33,7 @@ import java.util.Collections;
 import java.util.List;
 
 class FSDirAclOp {
-  static HdfsFileStatus modifyAclEntries(
+  static FileStatus modifyAclEntries(
       FSDirectory fsd, final String srcArg, List<AclEntry> aclSpec)
       throws IOException {
     String src = srcArg;
@@ -58,7 +58,7 @@ class FSDirAclOp {
     return fsd.getAuditFileInfo(iip);
   }
 
-  static HdfsFileStatus removeAclEntries(
+  static FileStatus removeAclEntries(
       FSDirectory fsd, final String srcArg, List<AclEntry> aclSpec)
       throws IOException {
     String src = srcArg;
@@ -83,7 +83,7 @@ class FSDirAclOp {
     return fsd.getAuditFileInfo(iip);
   }
 
-  static HdfsFileStatus removeDefaultAcl(FSDirectory fsd, final String srcArg)
+  static FileStatus removeDefaultAcl(FSDirectory fsd, final String srcArg)
       throws IOException {
     String src = srcArg;
     checkAclsConfigFlag(fsd);
@@ -107,7 +107,7 @@ class FSDirAclOp {
     return fsd.getAuditFileInfo(iip);
   }
 
-  static HdfsFileStatus removeAcl(FSDirectory fsd, final String srcArg)
+  static FileStatus removeAcl(FSDirectory fsd, final String srcArg)
       throws IOException {
     String src = srcArg;
     checkAclsConfigFlag(fsd);
@@ -126,7 +126,7 @@ class FSDirAclOp {
     return fsd.getAuditFileInfo(iip);
   }
 
-  static HdfsFileStatus setAcl(
+  static FileStatus setAcl(
       FSDirectory fsd, final String srcArg, List<AclEntry> aclSpec)
       throws IOException {
     String src = srcArg;

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

@@ -18,6 +18,7 @@
 package org.apache.hadoop.hdfs.server.namenode;
 
 import org.apache.hadoop.HadoopIllegalArgumentException;
+import org.apache.hadoop.fs.FileStatus;
 import org.apache.hadoop.fs.InvalidPathException;
 import org.apache.hadoop.fs.PathIsNotDirectoryException;
 import org.apache.hadoop.fs.StorageType;
@@ -28,7 +29,6 @@ import org.apache.hadoop.fs.permission.FsAction;
 import org.apache.hadoop.fs.permission.FsPermission;
 import org.apache.hadoop.hdfs.protocol.BlockStoragePolicy;
 import org.apache.hadoop.hdfs.protocol.HdfsConstants;
-import org.apache.hadoop.hdfs.protocol.HdfsFileStatus;
 import org.apache.hadoop.hdfs.protocol.QuotaExceededException;
 import org.apache.hadoop.hdfs.protocol.SnapshotAccessControlException;
 import org.apache.hadoop.hdfs.server.blockmanagement.BlockInfo;
@@ -50,7 +50,7 @@ import static org.apache.hadoop.hdfs.DFSConfigKeys.DFS_QUOTA_BY_STORAGETYPE_ENAB
 import static org.apache.hadoop.hdfs.DFSConfigKeys.DFS_STORAGE_POLICY_ENABLED_KEY;
 
 public class FSDirAttrOp {
-  static HdfsFileStatus setPermission(
+  static FileStatus setPermission(
       FSDirectory fsd, final String src, FsPermission permission)
       throws IOException {
     if (FSDirectory.isExactReservedName(src)) {
@@ -70,7 +70,7 @@ public class FSDirAttrOp {
     return fsd.getAuditFileInfo(iip);
   }
 
-  static HdfsFileStatus setOwner(
+  static FileStatus setOwner(
       FSDirectory fsd, String src, String username, String group)
       throws IOException {
     if (FSDirectory.isExactReservedName(src)) {
@@ -100,7 +100,7 @@ public class FSDirAttrOp {
     return fsd.getAuditFileInfo(iip);
   }
 
-  static HdfsFileStatus setTimes(
+  static FileStatus setTimes(
       FSDirectory fsd, String src, long mtime, long atime)
       throws IOException {
     FSPermissionChecker pc = fsd.getPermissionChecker();
@@ -153,13 +153,13 @@ public class FSDirAttrOp {
     return isFile;
   }
 
-  static HdfsFileStatus unsetStoragePolicy(FSDirectory fsd, BlockManager bm,
+  static FileStatus unsetStoragePolicy(FSDirectory fsd, BlockManager bm,
       String src) throws IOException {
     return setStoragePolicy(fsd, bm, src,
         HdfsConstants.BLOCK_STORAGE_POLICY_ID_UNSPECIFIED, "unset");
   }
 
-  static HdfsFileStatus setStoragePolicy(FSDirectory fsd, BlockManager bm,
+  static FileStatus setStoragePolicy(FSDirectory fsd, BlockManager bm,
       String src, final String policyName) throws IOException {
     // get the corresponding policy and make sure the policy name is valid
     BlockStoragePolicy policy = bm.getStoragePolicy(policyName);
@@ -171,7 +171,7 @@ public class FSDirAttrOp {
     return setStoragePolicy(fsd, bm, src, policy.getId(), "set");
   }
 
-  static HdfsFileStatus setStoragePolicy(FSDirectory fsd, BlockManager bm,
+  static FileStatus setStoragePolicy(FSDirectory fsd, BlockManager bm,
       String src, final byte policyId, final String operation)
       throws IOException {
     if (!fsd.isStoragePolicyEnabled()) {

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

@@ -21,9 +21,9 @@ import com.google.common.base.Preconditions;
 
 import org.apache.hadoop.HadoopIllegalArgumentException;
 import org.apache.hadoop.fs.permission.FsAction;
+import org.apache.hadoop.fs.FileStatus;
 import org.apache.hadoop.fs.StorageType;
 import org.apache.hadoop.hdfs.protocol.BlockStoragePolicy;
-import org.apache.hadoop.hdfs.protocol.HdfsFileStatus;
 import org.apache.hadoop.hdfs.protocol.QuotaExceededException;
 import org.apache.hadoop.hdfs.protocol.SnapshotException;
 import org.apache.hadoop.hdfs.server.namenode.FSDirectory.DirOp;
@@ -48,7 +48,7 @@ import static org.apache.hadoop.util.Time.now;
  */
 class FSDirConcatOp {
 
-  static HdfsFileStatus concat(FSDirectory fsd, String target, String[] srcs,
+  static FileStatus concat(FSDirectory fsd, String target, String[] srcs,
     boolean logRetryCache) throws IOException {
     validatePath(target, srcs);
     assert srcs != null;

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

@@ -34,6 +34,7 @@ import org.apache.hadoop.crypto.key.KeyProvider;
 import org.apache.hadoop.crypto.key.KeyProviderCryptoExtension;
 import org.apache.hadoop.crypto.key.KeyProviderCryptoExtension.EncryptedKeyVersion;
 import org.apache.hadoop.fs.FileEncryptionInfo;
+import org.apache.hadoop.fs.FileStatus;
 import org.apache.hadoop.fs.UnresolvedLinkException;
 import org.apache.hadoop.fs.XAttr;
 import org.apache.hadoop.fs.XAttrSetFlag;
@@ -41,7 +42,6 @@ import org.apache.hadoop.fs.BatchedRemoteIterator.BatchedListEntries;
 import org.apache.hadoop.fs.permission.FsAction;
 import org.apache.hadoop.hdfs.XAttrHelper;
 import org.apache.hadoop.hdfs.protocol.EncryptionZone;
-import org.apache.hadoop.hdfs.protocol.HdfsFileStatus;
 import org.apache.hadoop.hdfs.protocol.SnapshotAccessControlException;
 import org.apache.hadoop.hdfs.protocol.proto.HdfsProtos;
 import org.apache.hadoop.hdfs.protocolPB.PBHelperClient;
@@ -143,10 +143,10 @@ final class FSDirEncryptionZoneOp {
    *                KeyProvider
    * @param logRetryCache whether to record RPC ids in editlog for retry cache
    *                      rebuilding
-   * @return HdfsFileStatus
+   * @return FileStatus
    * @throws IOException
    */
-  static HdfsFileStatus createEncryptionZone(final FSDirectory fsd,
+  static FileStatus createEncryptionZone(final FSDirectory fsd,
       final String srcArg, final FSPermissionChecker pc, final String cipher,
       final String keyName, final boolean logRetryCache) throws IOException {
     final CipherSuite suite = CipherSuite.convert(cipher);
@@ -177,7 +177,7 @@ final class FSDirEncryptionZoneOp {
    * @param pc permission checker to check fs permission
    * @return the EZ with file status.
    */
-  static Map.Entry<EncryptionZone, HdfsFileStatus> getEZForPath(
+  static Map.Entry<EncryptionZone, FileStatus> getEZForPath(
       final FSDirectory fsd, final String srcArg, final FSPermissionChecker pc)
       throws IOException {
     final INodesInPath iip;
@@ -192,7 +192,7 @@ final class FSDirEncryptionZoneOp {
     } finally {
       fsd.readUnlock();
     }
-    HdfsFileStatus auditStat = fsd.getAuditFileInfo(iip);
+    FileStatus auditStat = fsd.getAuditFileInfo(iip);
     return new AbstractMap.SimpleImmutableEntry<>(ret, auditStat);
   }
 

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

@@ -19,6 +19,7 @@ package org.apache.hadoop.hdfs.server.namenode;
 
 import com.google.common.base.Preconditions;
 import org.apache.hadoop.fs.FileAlreadyExistsException;
+import org.apache.hadoop.fs.FileStatus;
 import org.apache.hadoop.fs.ParentNotDirectoryException;
 import org.apache.hadoop.fs.UnresolvedLinkException;
 import org.apache.hadoop.fs.permission.AclEntry;
@@ -27,7 +28,6 @@ import org.apache.hadoop.fs.permission.FsPermission;
 import org.apache.hadoop.fs.permission.PermissionStatus;
 import org.apache.hadoop.hdfs.DFSUtil;
 import org.apache.hadoop.hdfs.protocol.AclException;
-import org.apache.hadoop.hdfs.protocol.HdfsFileStatus;
 import org.apache.hadoop.hdfs.protocol.QuotaExceededException;
 import org.apache.hadoop.hdfs.server.namenode.FSDirectory.DirOp;
 import org.apache.hadoop.hdfs.server.namenode.snapshot.Snapshot;
@@ -39,7 +39,7 @@ import static org.apache.hadoop.util.Time.now;
 
 class FSDirMkdirOp {
 
-  static HdfsFileStatus mkdirs(FSNamesystem fsn, String src,
+  static FileStatus mkdirs(FSNamesystem fsn, String src,
       PermissionStatus permissions, boolean createParent) throws IOException {
     FSDirectory fsd = fsn.getFSDirectory();
     if(NameNode.stateChangeLog.isDebugEnabled()) {

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

@@ -19,13 +19,13 @@ package org.apache.hadoop.hdfs.server.namenode;
 
 import com.google.common.base.Preconditions;
 import org.apache.hadoop.fs.FileAlreadyExistsException;
+import org.apache.hadoop.fs.FileStatus;
 import org.apache.hadoop.fs.InvalidPathException;
 import org.apache.hadoop.fs.Options;
 import org.apache.hadoop.fs.ParentNotDirectoryException;
 import org.apache.hadoop.fs.Path;
 import org.apache.hadoop.fs.permission.FsAction;
 import org.apache.hadoop.hdfs.DistributedFileSystem;
-import org.apache.hadoop.hdfs.protocol.HdfsFileStatus;
 import org.apache.hadoop.hdfs.protocol.QuotaExceededException;
 import org.apache.hadoop.hdfs.protocol.SnapshotException;
 import org.apache.hadoop.hdfs.server.blockmanagement.BlockStoragePolicySuite;
@@ -781,18 +781,18 @@ class FSDirRenameOp {
       INodesInPath dst, boolean filesDeleted,
       BlocksMapUpdateInfo collectedBlocks) throws IOException {
     boolean success = (dst != null);
-    HdfsFileStatus auditStat = success ? fsd.getAuditFileInfo(dst) : null;
+    FileStatus auditStat = success ? fsd.getAuditFileInfo(dst) : null;
     return new RenameResult(
         success, auditStat, filesDeleted, collectedBlocks);
   }
 
   static class RenameResult {
     final boolean success;
-    final HdfsFileStatus auditStat;
+    final FileStatus auditStat;
     final boolean filesDeleted;
     final BlocksMapUpdateInfo collectedBlocks;
 
-    RenameResult(boolean success, HdfsFileStatus auditStat,
+    RenameResult(boolean success, FileStatus auditStat,
         boolean filesDeleted, BlocksMapUpdateInfo collectedBlocks) {
       this.success = success;
       this.auditStat = auditStat;

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

@@ -17,13 +17,13 @@
  */
 package org.apache.hadoop.hdfs.server.namenode;
 
+import org.apache.hadoop.fs.FileStatus;
 import org.apache.hadoop.fs.InvalidPathException;
 import org.apache.hadoop.fs.UnresolvedLinkException;
 import org.apache.hadoop.fs.permission.FsAction;
 import org.apache.hadoop.fs.permission.FsPermission;
 import org.apache.hadoop.fs.permission.PermissionStatus;
 import org.apache.hadoop.hdfs.DFSUtil;
-import org.apache.hadoop.hdfs.protocol.HdfsFileStatus;
 import org.apache.hadoop.hdfs.protocol.QuotaExceededException;
 import org.apache.hadoop.hdfs.server.namenode.FSDirectory.DirOp;
 
@@ -33,7 +33,7 @@ import static org.apache.hadoop.util.Time.now;
 
 class FSDirSymlinkOp {
 
-  static HdfsFileStatus createSymlinkInt(
+  static FileStatus createSymlinkInt(
       FSNamesystem fsn, String target, final String linkArg,
       PermissionStatus dirPerms, boolean createParent, boolean logRetryCache)
       throws IOException {

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

@@ -21,11 +21,11 @@ import java.io.IOException;
 import java.util.Set;
 
 import org.apache.hadoop.HadoopIllegalArgumentException;
+import org.apache.hadoop.fs.FileStatus;
 import org.apache.hadoop.fs.UnresolvedLinkException;
 import org.apache.hadoop.fs.permission.FsAction;
 import org.apache.hadoop.hdfs.protocol.Block;
 import org.apache.hadoop.hdfs.protocol.BlockStoragePolicy;
-import org.apache.hadoop.hdfs.protocol.HdfsFileStatus;
 import org.apache.hadoop.hdfs.protocol.QuotaExceededException;
 import org.apache.hadoop.hdfs.protocol.SnapshotAccessControlException;
 import org.apache.hadoop.hdfs.server.blockmanagement.BlockInfo;
@@ -337,9 +337,9 @@ final class FSDirTruncateOp {
    */
   static class TruncateResult {
     private final boolean result;
-    private final HdfsFileStatus stat;
+    private final FileStatus stat;
 
-    public TruncateResult(boolean result, HdfsFileStatus stat) {
+    public TruncateResult(boolean result, FileStatus stat) {
       this.result = result;
       this.stat = stat;
     }
@@ -355,7 +355,7 @@ final class FSDirTruncateOp {
     /**
      * @return file information.
      */
-    HdfsFileStatus getFileStatus() {
+    FileStatus getFileStatus() {
       return stat;
     }
   }

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

@@ -21,13 +21,13 @@ import com.google.common.annotations.VisibleForTesting;
 import com.google.common.base.Preconditions;
 import com.google.common.collect.Lists;
 import org.apache.hadoop.HadoopIllegalArgumentException;
+import org.apache.hadoop.fs.FileStatus;
 import org.apache.hadoop.fs.XAttr;
 import org.apache.hadoop.fs.XAttrSetFlag;
 import org.apache.hadoop.fs.permission.FsAction;
 import org.apache.hadoop.hdfs.DFSConfigKeys;
 import org.apache.hadoop.hdfs.DFSUtil;
 import org.apache.hadoop.hdfs.XAttrHelper;
-import org.apache.hadoop.hdfs.protocol.HdfsFileStatus;
 import org.apache.hadoop.hdfs.protocol.proto.HdfsProtos;
 import org.apache.hadoop.hdfs.protocolPB.PBHelperClient;
 import org.apache.hadoop.hdfs.server.namenode.FSDirectory.DirOp;
@@ -59,7 +59,7 @@ class FSDirXAttrOp {
    *          - xAttrs flags
    * @throws IOException
    */
-  static HdfsFileStatus setXAttr(
+  static FileStatus setXAttr(
       FSDirectory fsd, String src, XAttr xAttr, EnumSet<XAttrSetFlag> flag,
       boolean logRetryCache)
       throws IOException {
@@ -153,7 +153,7 @@ class FSDirXAttrOp {
    *          - xAttr to remove
    * @throws IOException
    */
-  static HdfsFileStatus removeXAttr(
+  static FileStatus removeXAttr(
       FSDirectory fsd, String src, XAttr xAttr, boolean logRetryCache)
       throws IOException {
     FSDirXAttrOp.checkXAttrsConfigFlag(fsd);

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

@@ -28,6 +28,7 @@ import org.apache.hadoop.HadoopIllegalArgumentException;
 import org.apache.hadoop.classification.InterfaceAudience;
 import org.apache.hadoop.conf.Configuration;
 import org.apache.hadoop.crypto.key.KeyProviderCryptoExtension;
+import org.apache.hadoop.fs.FileStatus;
 import org.apache.hadoop.fs.InvalidPathException;
 import org.apache.hadoop.fs.ParentNotDirectoryException;
 import org.apache.hadoop.fs.Path;
@@ -38,6 +39,7 @@ import org.apache.hadoop.fs.permission.FsAction;
 import org.apache.hadoop.fs.permission.FsPermission;
 import org.apache.hadoop.hdfs.DFSConfigKeys;
 import org.apache.hadoop.hdfs.DFSUtil;
+import org.apache.hadoop.hdfs.DFSUtilClient;
 import org.apache.hadoop.hdfs.protocol.BlockStoragePolicy;
 import org.apache.hadoop.hdfs.protocol.FSLimitException.MaxDirectoryItemsExceededException;
 import org.apache.hadoop.hdfs.protocol.FSLimitException.PathComponentTooLongException;
@@ -1711,10 +1713,45 @@ public class FSDirectory implements Closeable {
     }
   }
 
-  HdfsFileStatus getAuditFileInfo(INodesInPath iip)
+  FileStatus getAuditFileInfo(INodesInPath iip)
       throws IOException {
-    return (namesystem.isAuditEnabled() && namesystem.isExternalInvocation())
-        ? FSDirStatAndListingOp.getFileInfo(this, iip, false) : null;
+    if (!namesystem.isAuditEnabled() || !namesystem.isExternalInvocation()) {
+      return null;
+    }
+
+    final INode inode = iip.getLastINode();
+    if (inode == null) {
+      return null;
+    }
+    final int snapshot = iip.getPathSnapshotId();
+
+    Path symlink = null;
+    long size = 0;     // length is zero for directories
+    short replication = 0;
+    long blocksize = 0;
+
+    if (inode.isFile()) {
+      final INodeFile fileNode = inode.asFile();
+      size = fileNode.computeFileSize(snapshot);
+      replication = fileNode.getFileReplication(snapshot);
+      blocksize = fileNode.getPreferredBlockSize();
+    } else if (inode.isSymlink()) {
+      symlink = new Path(
+          DFSUtilClient.bytes2String(inode.asSymlink().getSymlink()));
+    }
+
+    return new FileStatus(
+        size,
+        inode.isDirectory(),
+        replication,
+        blocksize,
+        inode.getModificationTime(snapshot),
+        inode.getAccessTime(snapshot),
+        inode.getFsPermission(snapshot),
+        inode.getUserName(snapshot),
+        inode.getGroupName(snapshot),
+        symlink,
+        new Path(iip.getPath()));
   }
 
   /**

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

@@ -337,25 +337,33 @@ public class FSNamesystem implements Namesystem, FSNamesystemMBean,
   }
   
   private void logAuditEvent(boolean succeeded, String cmd, String src,
-      String dst, HdfsFileStatus stat) throws IOException {
+      String dst, FileStatus stat) throws IOException {
     if (isAuditEnabled() && isExternalInvocation()) {
       logAuditEvent(succeeded, Server.getRemoteUser(), Server.getRemoteIp(),
                     cmd, src, dst, stat);
     }
   }
 
-  private void logAuditEvent(boolean succeeded,
-      UserGroupInformation ugi, InetAddress addr, String cmd, String src,
-      String dst, HdfsFileStatus stat) {
+  private void logAuditEvent(boolean succeeded, String cmd, String src,
+      HdfsFileStatus stat) throws IOException {
+    if (!isAuditEnabled() || !isExternalInvocation()) {
+      return;
+    }
     FileStatus status = null;
     if (stat != null) {
       Path symlink = stat.isSymlink() ? new Path(stat.getSymlink()) : null;
-      Path path = dst != null ? new Path(dst) : new Path(src);
+      Path path = new Path(src);
       status = new FileStatus(stat.getLen(), stat.isDir(),
           stat.getReplication(), stat.getBlockSize(), stat.getModificationTime(),
           stat.getAccessTime(), stat.getPermission(), stat.getOwner(),
           stat.getGroup(), symlink, path);
     }
+    logAuditEvent(succeeded, cmd, src, null, status);
+  }
+
+  private void logAuditEvent(boolean succeeded,
+      UserGroupInformation ugi, InetAddress addr, String cmd, String src,
+      String dst, FileStatus status) {
     final String ugiStr = ugi.toString();
     for (AuditLogger logger : auditLoggers) {
       if (logger instanceof HdfsAuditLogger) {
@@ -1710,7 +1718,7 @@ public class FSNamesystem implements Namesystem, FSNamesystemMBean,
    */
   void setPermission(String src, FsPermission permission) throws IOException {
     final String operationName = "setPermission";
-    HdfsFileStatus auditStat;
+    FileStatus auditStat;
     checkOperation(OperationCategory.WRITE);
     writeLock();
     try {
@@ -1734,7 +1742,7 @@ public class FSNamesystem implements Namesystem, FSNamesystemMBean,
   void setOwner(String src, String username, String group)
       throws IOException {
     final String operationName = "setOwner";
-    HdfsFileStatus auditStat;
+    FileStatus auditStat;
     checkOperation(OperationCategory.WRITE);
     writeLock();
     try {
@@ -1862,7 +1870,7 @@ public class FSNamesystem implements Namesystem, FSNamesystemMBean,
   void concat(String target, String [] srcs, boolean logRetryCache)
       throws IOException {
     final String operationName = "concat";
-    HdfsFileStatus stat = null;
+    FileStatus stat = null;
     boolean success = false;
     writeLock();
     try {
@@ -1887,7 +1895,7 @@ public class FSNamesystem implements Namesystem, FSNamesystemMBean,
    */
   void setTimes(String src, long mtime, long atime) throws IOException {
     final String operationName = "setTimes";
-    HdfsFileStatus auditStat;
+    FileStatus auditStat;
     checkOperation(OperationCategory.WRITE);
     writeLock();
     try {
@@ -1915,7 +1923,7 @@ public class FSNamesystem implements Namesystem, FSNamesystemMBean,
     if (!FileSystem.areSymlinksEnabled()) {
       throw new UnsupportedOperationException("Symlinks not supported");
     }
-    HdfsFileStatus auditStat = null;
+    FileStatus auditStat = null;
     checkOperation(OperationCategory.WRITE);
     writeLock();
     try {
@@ -2025,7 +2033,7 @@ public class FSNamesystem implements Namesystem, FSNamesystemMBean,
    */
   void setStoragePolicy(String src, String policyName) throws IOException {
     final String operationName = "setStoragePolicy";
-    HdfsFileStatus auditStat;
+    FileStatus auditStat;
     checkOperation(OperationCategory.WRITE);
     writeLock();
     try {
@@ -2050,7 +2058,7 @@ public class FSNamesystem implements Namesystem, FSNamesystemMBean,
    */
   void unsetStoragePolicy(String src) throws IOException {
     final String operationName = "unsetStoragePolicy";
-    HdfsFileStatus auditStat;
+    FileStatus auditStat;
     checkOperation(OperationCategory.WRITE);
     writeLock();
     try {
@@ -2170,7 +2178,7 @@ public class FSNamesystem implements Namesystem, FSNamesystemMBean,
       logAuditEvent(false, "create", src);
       throw e;
     }
-    logAuditEvent(true, "create", src, null, status);
+    logAuditEvent(true, "create", src, status);
     return status;
   }
 
@@ -2917,7 +2925,7 @@ public class FSNamesystem implements Namesystem, FSNamesystemMBean,
   boolean mkdirs(String src, PermissionStatus permissions,
       boolean createParent) throws IOException {
     final String operationName = "mkdirs";
-    HdfsFileStatus auditStat = null;
+    FileStatus auditStat = null;
     checkOperation(OperationCategory.WRITE);
     writeLock();
     try {
@@ -6512,7 +6520,7 @@ public class FSNamesystem implements Namesystem, FSNamesystemMBean,
   void modifyAclEntries(final String src, List<AclEntry> aclSpec)
       throws IOException {
     final String operationName = "modifyAclEntries";
-    HdfsFileStatus auditStat = null;
+    FileStatus auditStat = null;
     checkOperation(OperationCategory.WRITE);
     writeLock();
     try {
@@ -6533,7 +6541,7 @@ public class FSNamesystem implements Namesystem, FSNamesystemMBean,
       throws IOException {
     final String operationName = "removeAclEntries";
     checkOperation(OperationCategory.WRITE);
-    HdfsFileStatus auditStat = null;
+    FileStatus auditStat = null;
     writeLock();
     try {
       checkOperation(OperationCategory.WRITE);
@@ -6551,7 +6559,7 @@ public class FSNamesystem implements Namesystem, FSNamesystemMBean,
 
   void removeDefaultAcl(final String src) throws IOException {
     final String operationName = "removeDefaultAcl";
-    HdfsFileStatus auditStat = null;
+    FileStatus auditStat = null;
     checkOperation(OperationCategory.WRITE);
     writeLock();
     try {
@@ -6570,7 +6578,7 @@ public class FSNamesystem implements Namesystem, FSNamesystemMBean,
 
   void removeAcl(final String src) throws IOException {
     final String operationName = "removeAcl";
-    HdfsFileStatus auditStat = null;
+    FileStatus auditStat = null;
     checkOperation(OperationCategory.WRITE);
     writeLock();
     try {
@@ -6589,7 +6597,7 @@ public class FSNamesystem implements Namesystem, FSNamesystemMBean,
 
   void setAcl(final String src, List<AclEntry> aclSpec) throws IOException {
     final String operationName = "setAcl";
-    HdfsFileStatus auditStat = null;
+    FileStatus auditStat = null;
     checkOperation(OperationCategory.WRITE);
     writeLock();
     try {
@@ -6643,7 +6651,7 @@ public class FSNamesystem implements Namesystem, FSNamesystemMBean,
       checkSuperuserPrivilege();
       FSPermissionChecker pc = getPermissionChecker();
       checkOperation(OperationCategory.WRITE);
-      final HdfsFileStatus resultingStat;
+      final FileStatus resultingStat;
       writeLock();
       try {
         checkSuperuserPrivilege();
@@ -6674,14 +6682,14 @@ public class FSNamesystem implements Namesystem, FSNamesystemMBean,
   EncryptionZone getEZForPath(final String srcArg)
     throws AccessControlException, UnresolvedLinkException, IOException {
     final String operationName = "getEZForPath";
-    HdfsFileStatus resultingStat = null;
+    FileStatus resultingStat = null;
     boolean success = false;
     final FSPermissionChecker pc = getPermissionChecker();
     checkOperation(OperationCategory.READ);
     readLock();
     try {
       checkOperation(OperationCategory.READ);
-      Entry<EncryptionZone, HdfsFileStatus> ezForPath = FSDirEncryptionZoneOp
+      Entry<EncryptionZone, FileStatus> ezForPath = FSDirEncryptionZoneOp
           .getEZForPath(dir, srcArg, pc);
       success = true;
       resultingStat = ezForPath.getValue();
@@ -6716,7 +6724,7 @@ public class FSNamesystem implements Namesystem, FSNamesystemMBean,
                 boolean logRetryCache)
       throws IOException {
     final String operationName = "setXAttr";
-    HdfsFileStatus auditStat = null;
+    FileStatus auditStat = null;
     writeLock();
     try {
       checkOperation(OperationCategory.WRITE);
@@ -6766,7 +6774,7 @@ public class FSNamesystem implements Namesystem, FSNamesystemMBean,
   void removeXAttr(String src, XAttr xAttr, boolean logRetryCache)
       throws IOException {
     final String operationName = "removeXAttr";
-    HdfsFileStatus auditStat = null;
+    FileStatus auditStat = null;
     writeLock();
     try {
       checkOperation(OperationCategory.WRITE);