HDFS-17524. OIV: add Transformed processor which reconstructs a fsimage from another fsimage file

Author: wuxiaobao

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

@@ -134,4 +134,8 @@ private static SerialNumberManager getSerialNumberManager(AclEntryType type) {
   public int getLength() {
     return BITS.getLength();
   }
+
+  public LongBitFormat getBitFormat() {
+    return BITS;
+  }
 }

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

@@ -35,7 +35,7 @@ public abstract class INodeWithAdditionalFields extends INode
     implements LinkedElement {
   // Note: this format is used both in-memory and on-disk.  Changes will be
   // incompatible.
-  enum PermissionStatusFormat implements LongBitFormat.Enum {
+  public enum PermissionStatusFormat implements LongBitFormat.Enum {
     MODE(null, 16),
     GROUP(MODE.BITS, 24),
     USER(GROUP.BITS, 24);
@@ -93,6 +93,10 @@ static PermissionStatus toPermissionStatus(long id,
     public int getLength() {
       return BITS.getLength();
     }
+
+    public LongBitFormat getBitFormat() {
+      return BITS;
+    }
   }
 
   /** The inode id. */

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

@@ -61,6 +61,9 @@ public int getLength() {
     return BITS.getLength();
   }
 
+  public LongBitFormat getBitFormat() {
+    return BITS;
+  }
   static XAttr.NameSpace getNamespace(int record) {
     long nid = NS.BITS.retrieve(record);
     nid |= NS_EXT.BITS.retrieve(record) << NS_EXT_SHIFT;