HDFS-8058. Erasure coding: use BlockInfo[] for both striped and contiguous blocks in INodeFile. Contributed by Zhe Zhang and Yi Liu.

hadoop-hdfs-project/hadoop-hdfs/CHANGES-HDFS-EC-7285.txt

@@ -356,3 +356,6 @@
 
     HDFS-8619. Erasure Coding: revisit replica counting for striped blocks.
     (Jing Zhao via yliu)
+
+    HDFS-8058. Erasure coding: use BlockInfo[] for both striped and contiguous
+    blocks in INodeFile. (Zhe Zhang and Yi Liu via zhz)

hadoop-hdfs-project/hadoop-hdfs/src/main/java/org/apache/hadoop/hdfs/server/blockmanagement/BlockInfo.java

@@ -31,6 +31,7 @@ import org.apache.hadoop.util.LightWeightGSet;
  */
 public abstract class BlockInfo extends Block
     implements LightWeightGSet.LinkedElement {
+  public static final BlockInfo[] EMPTY_ARRAY = {};
   private BlockCollection bc;
 
   /** For implementing {@link LightWeightGSet.LinkedElement} interface */

hadoop-hdfs-project/hadoop-hdfs/src/main/java/org/apache/hadoop/hdfs/server/blockmanagement/BlockInfoContiguous.java

@@ -26,7 +26,6 @@ import org.apache.hadoop.hdfs.server.common.HdfsServerConstants.BlockUCState;
  */
 @InterfaceAudience.Private
 public class BlockInfoContiguous extends BlockInfo {
-  public static final BlockInfoContiguous[] EMPTY_ARRAY = {};
 
   public BlockInfoContiguous(short size) {
     super(size);

hadoop-hdfs-project/hadoop-hdfs/src/main/java/org/apache/hadoop/hdfs/server/blockmanagement/BlockManager.java

@@ -3037,13 +3037,13 @@ public class BlockManager {
   
   /** Set replication for the blocks. */
   public void setReplication(final short oldRepl, final short newRepl,
-      final String src, final BlockInfoContiguous... blocks) {
+      final String src, final BlockInfo... blocks) {
     if (newRepl == oldRepl) {
       return;
     }
 
     // update needReplication priority queues
-    for(BlockInfoContiguous b : blocks) {
+    for(BlockInfo b : blocks) {
       updateNeededReplications(b, 0, newRepl-oldRepl);
     }
       
@@ -3051,7 +3051,7 @@ public class BlockManager {
       // old replication > the new one; need to remove copies
       LOG.info("Decreasing replication from " + oldRepl + " to " + newRepl
           + " for " + src);
-      for(BlockInfoContiguous b : blocks) {
+      for(BlockInfo b : blocks) {
         processOverReplicatedBlock(b, newRepl, null, null);
       }
     } else { // replication factor is increased

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

@@ -25,14 +25,12 @@ import org.apache.hadoop.fs.XAttr;
 import org.apache.hadoop.fs.XAttrSetFlag;
 import org.apache.hadoop.fs.permission.FsAction;
 import org.apache.hadoop.fs.permission.FsPermission;
-import org.apache.hadoop.hdfs.protocol.Block;
 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;
-import org.apache.hadoop.hdfs.server.blockmanagement.BlockInfoContiguous;
 import org.apache.hadoop.hdfs.server.blockmanagement.BlockManager;
 import org.apache.hadoop.hdfs.server.blockmanagement.BlockStoragePolicySuite;
 import org.apache.hadoop.hdfs.util.EnumCounters;
@@ -150,7 +148,7 @@ public class FSDirAttrOp {
       }
 
       final short[] blockRepls = new short[2]; // 0: old, 1: new
-      final BlockInfoContiguous[] blocks = unprotectedSetReplication(fsd, src,
+      final BlockInfo[] blocks = unprotectedSetReplication(fsd, src,
           replication, blockRepls);
       isFile = blocks != null;
       if (isFile) {
@@ -377,7 +375,7 @@ public class FSDirAttrOp {
     }
   }
 
-  static BlockInfoContiguous[] unprotectedSetReplication(
+  static BlockInfo[] unprotectedSetReplication(
       FSDirectory fsd, String src, short replication, short[] blockRepls)
       throws QuotaExceededException, UnresolvedLinkException,
       SnapshotAccessControlException, UnsupportedActionException {
@@ -417,7 +415,7 @@ public class FSDirAttrOp {
       blockRepls[0] = oldBR;
       blockRepls[1] = newBR;
     }
-    return file.getContiguousBlocks();
+    return file.getBlocks();
   }
 
   static void unprotectedSetStoragePolicy(

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

@@ -234,7 +234,7 @@ class FSDirConcatOp {
     int count = 0;
     for (INodeFile nodeToRemove : srcList) {
       if(nodeToRemove != null) {
-        nodeToRemove.setContiguousBlocks(null);
+        nodeToRemove.clearBlocks();
         nodeToRemove.getParent().removeChild(nodeToRemove);
         fsd.getINodeMap().remove(nodeToRemove);
         count++;

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

@@ -44,7 +44,6 @@ import org.apache.hadoop.hdfs.protocol.LocatedBlock;
 import org.apache.hadoop.hdfs.protocol.QuotaExceededException;
 import org.apache.hadoop.hdfs.security.token.block.BlockTokenIdentifier;
 import org.apache.hadoop.hdfs.server.blockmanagement.BlockInfo;
-import org.apache.hadoop.hdfs.server.blockmanagement.BlockInfoContiguous;
 import org.apache.hadoop.hdfs.server.blockmanagement.BlockInfoContiguousUnderConstruction;
 import org.apache.hadoop.hdfs.server.blockmanagement.BlockInfoStripedUnderConstruction;
 import org.apache.hadoop.hdfs.server.blockmanagement.BlockInfoUnderConstruction;
@@ -481,25 +480,24 @@ class FSDirWriteFileOp {
       long preferredBlockSize, boolean underConstruction, String clientName,
       String clientMachine, byte storagePolicyId) {
     final INodeFile newNode;
+    Preconditions.checkNotNull(existing);
     assert fsd.hasWriteLock();
-    if (underConstruction) {
-      newNode = newINodeFile(id, permissions, modificationTime,
-          modificationTime, replication, preferredBlockSize, storagePolicyId);
-      newNode.toUnderConstruction(clientName, clientMachine);
-    } else {
-      newNode = newINodeFile(id, permissions, modificationTime, atime,
-          replication, preferredBlockSize, storagePolicyId);
-    }
-
-    newNode.setLocalName(localName);
     try {
+      // check if the file is in an EC zone
+      final boolean isStriped = FSDirErasureCodingOp.isInErasureCodingZone(
+          fsd.getFSNamesystem(), existing);
+      if (underConstruction) {
+        newNode = newINodeFile(id, permissions, modificationTime,
+            modificationTime, replication, preferredBlockSize, storagePolicyId,
+            isStriped);
+        newNode.toUnderConstruction(clientName, clientMachine);
+      } else {
+        newNode = newINodeFile(id, permissions, modificationTime, atime,
+            replication, preferredBlockSize, storagePolicyId, isStriped);
+      }
+      newNode.setLocalName(localName);
       INodesInPath iip = fsd.addINode(existing, newNode);
       if (iip != null) {
-        // check if the file is in an EC zone
-        if (FSDirErasureCodingOp.isInErasureCodingZone(fsd.getFSNamesystem(),
-            iip)) {
-          newNode.addStripedBlocksFeature();
-        }
         if (aclEntries != null) {
           AclStorage.updateINodeAcl(newNode, aclEntries, CURRENT_STATE_ID);
         }
@@ -580,21 +578,18 @@ class FSDirWriteFileOp {
       String clientName, String clientMachine)
       throws IOException {
 
+    Preconditions.checkNotNull(existing);
     long modTime = now();
-    INodeFile newNode = newINodeFile(fsd.allocateNewInodeId(), permissions,
-        modTime, modTime, replication, preferredBlockSize);
-    newNode.setLocalName(localName.getBytes(Charsets.UTF_8));
-    newNode.toUnderConstruction(clientName, clientMachine);
-
     INodesInPath newiip;
     fsd.writeLock();
     try {
+      final boolean isStriped = FSDirErasureCodingOp.isInErasureCodingZone(
+          fsd.getFSNamesystem(), existing);
+      INodeFile newNode = newINodeFile(fsd.allocateNewInodeId(), permissions,
+          modTime, modTime, replication, preferredBlockSize, isStriped);
+      newNode.setLocalName(localName.getBytes(Charsets.UTF_8));
+      newNode.toUnderConstruction(clientName, clientMachine);
       newiip = fsd.addINode(existing, newNode);
-      if (newiip != null
-          && FSDirErasureCodingOp.isInErasureCodingZone(fsd.getFSNamesystem(),
-              newiip)) {
-        newNode.addStripedBlocksFeature();
-      }
     } finally {
       fsd.writeUnlock();
     }
@@ -788,16 +783,18 @@ class FSDirWriteFileOp {
 
   private static INodeFile newINodeFile(
       long id, PermissionStatus permissions, long mtime, long atime,
-      short replication, long preferredBlockSize, byte storagePolicyId) {
+      short replication, long preferredBlockSize, byte storagePolicyId,
+      boolean isStriped) {
     return new INodeFile(id, null, permissions, mtime, atime,
-        BlockInfoContiguous.EMPTY_ARRAY, replication, preferredBlockSize,
+        BlockInfo.EMPTY_ARRAY, replication, preferredBlockSize,
-        storagePolicyId);
+        storagePolicyId, isStriped);
   }
 
   private static INodeFile newINodeFile(long id, PermissionStatus permissions,
-      long mtime, long atime, short replication, long preferredBlockSize) {
+      long mtime, long atime, short replication, long preferredBlockSize,
+      boolean isStriped) {
     return newINodeFile(id, permissions, mtime, atime, replication,
-        preferredBlockSize, (byte)0);
+        preferredBlockSize, (byte)0, isStriped);
   }
 
   /**

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

@@ -55,9 +55,7 @@ import org.apache.hadoop.hdfs.protocol.LayoutVersion;
 import org.apache.hadoop.hdfs.protocol.LayoutVersion.Feature;
 import org.apache.hadoop.hdfs.server.blockmanagement.BlockInfo;
 import org.apache.hadoop.hdfs.server.blockmanagement.BlockInfoContiguous;
-import org.apache.hadoop.hdfs.server.blockmanagement.BlockInfoStriped;
 import org.apache.hadoop.hdfs.server.blockmanagement.BlockInfoContiguousUnderConstruction;
-import org.apache.hadoop.hdfs.server.blockmanagement.BlockInfoStripedUnderConstruction;
 import org.apache.hadoop.hdfs.server.blockmanagement.BlockManager;
 import org.apache.hadoop.hdfs.server.common.HdfsServerConstants;
 import org.apache.hadoop.hdfs.server.common.HdfsServerConstants.StartupOption;
@@ -76,7 +74,6 @@ import org.apache.hadoop.hdfs.util.ReadOnlyList;
 import org.apache.hadoop.io.IOUtils;
 import org.apache.hadoop.io.MD5Hash;
 import org.apache.hadoop.io.Text;
-import org.apache.hadoop.io.erasurecode.ECSchema;
 import org.apache.hadoop.util.StringUtils;
 
 import com.google.common.annotations.VisibleForTesting;
@@ -903,7 +900,7 @@ public class FSImageFormat {
       final long preferredBlockSize = in.readLong();
 
       return new INodeFileAttributes.SnapshotCopy(name, permissions, null, modificationTime,
-          accessTime, replication, preferredBlockSize, (byte) 0, null);
+          accessTime, replication, preferredBlockSize, (byte) 0, null, false);
     }
 
     public INodeDirectoryAttributes loadINodeDirectoryAttributes(DataInput in)

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

@@ -55,7 +55,6 @@ import org.apache.hadoop.hdfs.server.namenode.FsImageProto.FilesUnderConstructio
 import org.apache.hadoop.hdfs.server.namenode.FsImageProto.INodeDirectorySection;
 import org.apache.hadoop.hdfs.server.namenode.FsImageProto.INodeSection;
 import org.apache.hadoop.hdfs.server.namenode.FsImageProto.INodeSection.AclFeatureProto;
-import org.apache.hadoop.hdfs.server.namenode.FsImageProto.INodeSection.StripedBlocksFeature;
 import org.apache.hadoop.hdfs.server.namenode.FsImageProto.INodeSection.XAttrCompactProto;
 import org.apache.hadoop.hdfs.server.namenode.FsImageProto.INodeSection.XAttrFeatureProto;
 import org.apache.hadoop.hdfs.server.namenode.FsImageProto.INodeSection.QuotaByStorageTypeEntryProto;
@@ -326,13 +325,22 @@ public final class FSImageFormatPBINode {
       INodeSection.INodeFile f = n.getFile();
       List<BlockProto> bp = f.getBlocksList();
       short replication = (short) f.getReplication();
+      boolean isStriped = f.getIsStriped();
       LoaderContext state = parent.getLoaderContext();
+      ECSchema schema = ErasureCodingSchemaManager.getSystemDefaultSchema();
 
-      BlockInfoContiguous[] blocks = null;
+      if (isStriped) {
-      if (!f.hasStripedBlocks()) {
+        Preconditions.checkState(f.hasStripingCellSize());
-        blocks = new BlockInfoContiguous[bp.size()];
+      }
-        for (int i = 0, e = bp.size(); i < e; ++i) {
+      BlockInfo[] blocks = new BlockInfo[bp.size()];
-          blocks[i] = new BlockInfoContiguous(PBHelper.convert(bp.get(i)), replication);
+      for (int i = 0; i < bp.size(); ++i) {
+        BlockProto b = bp.get(i);
+        if (isStriped) {
+          blocks[i] = new BlockInfoStriped(PBHelper.convert(b), schema,
+              (int)f.getStripingCellSize());
+        } else {
+          blocks[i] = new BlockInfoContiguous(PBHelper.convert(b),
+              replication);
         }
       }
 
@@ -342,46 +350,31 @@ public final class FSImageFormatPBINode {
       final INodeFile file = new INodeFile(n.getId(),
           n.getName().toByteArray(), permissions, f.getModificationTime(),
           f.getAccessTime(), blocks, replication, f.getPreferredBlockSize(),
-          (byte)f.getStoragePolicyID());
+          (byte)f.getStoragePolicyID(), isStriped);
 
       if (f.hasAcl()) {
         int[] entries = AclEntryStatusFormat.toInt(loadAclEntries(
             f.getAcl(), state.getStringTable()));
         file.addAclFeature(new AclFeature(entries));
       }
-      
+
       if (f.hasXAttrs()) {
         file.addXAttrFeature(new XAttrFeature(
             loadXAttrs(f.getXAttrs(), state.getStringTable())));
       }
 
-      FileWithStripedBlocksFeature stripeFeature = null;
-      if (f.hasStripedBlocks()) {
-        // TODO: HDFS-7859
-        ECSchema schema = ErasureCodingSchemaManager.getSystemDefaultSchema();
-        stripeFeature = file.addStripedBlocksFeature();
-        if (bp.size() > 0) {
-          // if a striped file has block, the cellSize must exist in proto
-          final int cellSize = f.getStripedBlocks().getCellSize();
-          for (BlockProto b : bp) {
-            stripeFeature.addBlock(new BlockInfoStriped(PBHelper.convert(b),
-                schema, cellSize));
-          }
-        }
-      }
-
       // under-construction information
       if (f.hasFileUC()) {
         INodeSection.FileUnderConstructionFeature uc = f.getFileUC();
         file.toUnderConstruction(uc.getClientName(), uc.getClientMachine());
-        BlockInfo lastBlk = file.getLastBlock();
+        if (blocks.length > 0) {
-        if (lastBlk != null) {
+          BlockInfo lastBlk = file.getLastBlock();
           // replace the last block of file
           final BlockInfo ucBlk;
-          if (stripeFeature != null) {
+          if (isStriped) {
             BlockInfoStriped striped = (BlockInfoStriped) lastBlk;
             ucBlk = new BlockInfoStripedUnderConstruction(striped,
-                striped.getSchema(), striped.getCellSize());
+                schema, (int)f.getStripingCellSize());
           } else {
             ucBlk = new BlockInfoContiguousUnderConstruction(lastBlk,
                 replication);
@@ -500,7 +493,8 @@ public final class FSImageFormatPBINode {
           .setPermission(buildPermissionStatus(file, state.getStringMap()))
           .setPreferredBlockSize(file.getPreferredBlockSize())
           .setReplication(file.getFileReplication())
-          .setStoragePolicyID(file.getLocalStoragePolicyID());
+          .setStoragePolicyID(file.getLocalStoragePolicyID())
+          .setIsStriped(file.isStriped());
 
       AclFeature f = file.getAclFeature();
       if (f != null) {
@@ -654,28 +648,22 @@ public final class FSImageFormatPBINode {
     private void save(OutputStream out, INodeFile n) throws IOException {
       INodeSection.INodeFile.Builder b = buildINodeFile(n,
           parent.getSaverContext());
+      BlockInfo[] blocks = n.getBlocks();
 
-      BlockInfoContiguous[] cBlks = n.getContiguousBlocks();
+      if (blocks != null) {
-      if (cBlks != null) {
+        for (Block block : n.getBlocks()) {
-        for (Block block : cBlks) {
           b.addBlocks(PBHelper.convert(block));
         }
       }
 
-      FileWithStripedBlocksFeature sb = n.getStripedBlocksFeature();
+      if (n.isStriped()) {
-      if (sb != null) {
+        if (blocks != null && blocks.length > 0) {
-        StripedBlocksFeature.Builder builder =
+          BlockInfo firstBlock = blocks[0];
-            StripedBlocksFeature.newBuilder();
+          Preconditions.checkState(firstBlock.isStriped());
-        BlockInfoStriped[] sblocks = sb.getBlocks();
+          b.setStripingCellSize(((BlockInfoStriped)firstBlock).getCellSize());
-        if (sblocks != null && sblocks.length > 0) {
+        } else {
-          final int cellSize = sblocks[0].getCellSize();
+          b.setStripingCellSize(HdfsConstants.BLOCK_STRIPED_CELL_SIZE);
-          for (BlockInfoStriped sblk : sblocks) {
-            assert cellSize == sblk.getCellSize();
-            b.addBlocks(PBHelper.convert(sblk));
-          }
-          builder.setCellSize(cellSize);
         }
-        b.setStripedBlocks(builder.build());
       }
 
       FileUnderConstructionFeature uc = n.getFileUnderConstructionFeature();

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

@@ -1,116 +0,0 @@
-/**
- * Licensed to the Apache Software Foundation (ASF) under one
- * or more contributor license agreements.  See the NOTICE file
- * distributed with this work for additional information
- * regarding copyright ownership.  The ASF licenses this file
- * to you under the Apache License, Version 2.0 (the
- * "License"); you may not use this file except in compliance
- * with the License.  You may obtain a copy of the License at
- *
- *     http://www.apache.org/licenses/LICENSE-2.0
- *
- * Unless required by applicable law or agreed to in writing, software
- * distributed under the License is distributed on an "AS IS" BASIS,
- * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
- * See the License for the specific language governing permissions and
- * limitations under the License.
- */
-package org.apache.hadoop.hdfs.server.namenode;
-
-import com.google.common.base.Preconditions;
-import org.apache.hadoop.hdfs.protocol.Block;
-import org.apache.hadoop.hdfs.server.blockmanagement.BlockInfoContiguous;
-import org.apache.hadoop.hdfs.server.blockmanagement.BlockInfoStriped;
-import org.apache.hadoop.hdfs.server.blockmanagement.BlockInfoStripedUnderConstruction;
-
-/**
- * Feature for file with striped blocks
- */
-class FileWithStripedBlocksFeature implements INode.Feature {
-  private BlockInfoStriped[] blocks;
-
-  FileWithStripedBlocksFeature() {
-    blocks = new BlockInfoStriped[0];
-  }
-
-  FileWithStripedBlocksFeature(BlockInfoStriped[] blocks) {
-    Preconditions.checkArgument(blocks != null);
-    this.blocks = blocks;
-  }
-
-  BlockInfoStriped[] getBlocks() {
-    return this.blocks;
-  }
-
-  void setBlock(int index, BlockInfoStriped blk) {
-    blocks[index] = blk;
-  }
-
-  BlockInfoStriped getLastBlock() {
-    return blocks == null || blocks.length == 0 ?
-        null : blocks[blocks.length - 1];
-  }
-
-  int numBlocks() {
-    return blocks == null ? 0 : blocks.length;
-  }
-
-  void updateBlockCollection(INodeFile file) {
-    if (blocks != null) {
-      for (BlockInfoStriped blk : blocks) {
-        blk.setBlockCollection(file);
-      }
-    }
-  }
-
-  private void setBlocks(BlockInfoStriped[] blocks) {
-    this.blocks = blocks;
-  }
-
-  void addBlock(BlockInfoStriped newBlock) {
-    if (this.blocks == null) {
-      this.setBlocks(new BlockInfoStriped[]{newBlock});
-    } else {
-      int size = this.blocks.length;
-      BlockInfoStriped[] newlist = new BlockInfoStriped[size + 1];
-      System.arraycopy(this.blocks, 0, newlist, 0, size);
-      newlist[size] = newBlock;
-      this.setBlocks(newlist);
-    }
-  }
-
-  BlockInfoStripedUnderConstruction removeLastBlock(
-      Block oldblock) {
-    if (blocks == null || blocks.length == 0) {
-      return null;
-    }
-    int newSize = blocks.length - 1;
-    if (!blocks[newSize].equals(oldblock)) {
-      return null;
-    }
-
-    BlockInfoStripedUnderConstruction uc =
-        (BlockInfoStripedUnderConstruction) blocks[newSize];
-    //copy to a new list
-    BlockInfoStriped[] newlist = new BlockInfoStriped[newSize];
-    System.arraycopy(blocks, 0, newlist, 0, newSize);
-    setBlocks(newlist);
-    return uc;
-  }
-
-  void truncateStripedBlocks(int n) {
-    final BlockInfoStriped[] newBlocks;
-    if (n == 0) {
-      newBlocks = new BlockInfoStriped[0];
-    } else {
-      newBlocks = new BlockInfoStriped[n];
-      System.arraycopy(getBlocks(), 0, newBlocks, 0, n);
-    }
-    // set new blocks
-    setBlocks(newBlocks);
-  }
-
-  void clear() {
-    this.blocks = null;
-  }
-}

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

@@ -40,9 +40,7 @@ import org.apache.hadoop.hdfs.protocol.QuotaExceededException;
 import org.apache.hadoop.hdfs.server.blockmanagement.BlockCollection;
 import org.apache.hadoop.hdfs.server.blockmanagement.BlockInfo;
 import org.apache.hadoop.hdfs.server.blockmanagement.BlockInfoContiguous;
-import org.apache.hadoop.hdfs.server.blockmanagement.BlockInfoContiguousUnderConstruction;
 import org.apache.hadoop.hdfs.server.blockmanagement.BlockInfoStriped;
-import org.apache.hadoop.hdfs.server.blockmanagement.BlockInfoStripedUnderConstruction;
 import org.apache.hadoop.hdfs.server.blockmanagement.BlockInfoUnderConstruction;
 import org.apache.hadoop.hdfs.server.blockmanagement.BlockStoragePolicySuite;
 import org.apache.hadoop.hdfs.server.blockmanagement.DatanodeStorageInfo;
@@ -84,12 +82,14 @@ public class INodeFile extends INodeWithAdditionalFields
 
   /** 
    * Bit format:
-   * [4-bit storagePolicyID][12-bit replication][48-bit preferredBlockSize]
+   * [4-bit storagePolicyID][1-bit isStriped]
+   * [11-bit replication][48-bit preferredBlockSize]
    */
   static enum HeaderFormat {
     PREFERRED_BLOCK_SIZE(null, 48, 1),
-    REPLICATION(PREFERRED_BLOCK_SIZE.BITS, 12, 0),
+    REPLICATION(PREFERRED_BLOCK_SIZE.BITS, 11, 0),
-    STORAGE_POLICY_ID(REPLICATION.BITS, BlockStoragePolicySuite.ID_BIT_LENGTH,
+    IS_STRIPED(REPLICATION.BITS, 1, 0),
+    STORAGE_POLICY_ID(IS_STRIPED.BITS, BlockStoragePolicySuite.ID_BIT_LENGTH,
         0);
 
     private final LongBitFormat BITS;
@@ -110,14 +110,27 @@ public class INodeFile extends INodeWithAdditionalFields
       return (byte)STORAGE_POLICY_ID.BITS.retrieve(header);
     }
 
+    static boolean isStriped(long header) {
+      long isStriped = IS_STRIPED.BITS.retrieve(header);
+      Preconditions.checkState(isStriped == 0 || isStriped == 1);
+      return isStriped == 1;
+    }
+
     static long toLong(long preferredBlockSize, short replication,
-        byte storagePolicyID) {
+        boolean isStriped, byte storagePolicyID) {
       long h = 0;
       if (preferredBlockSize == 0) {
         preferredBlockSize = PREFERRED_BLOCK_SIZE.BITS.getMin();
       }
       h = PREFERRED_BLOCK_SIZE.BITS.combine(preferredBlockSize, h);
-      h = REPLICATION.BITS.combine(replication, h);
+      // Replication factor for striped files is zero
+      if (isStriped) {
+        h = REPLICATION.BITS.combine(0L, h);
+        h = IS_STRIPED.BITS.combine(1L, h);
+      } else {
+        h = REPLICATION.BITS.combine(replication, h);
+        h = IS_STRIPED.BITS.combine(0L, h);
+      }
       h = STORAGE_POLICY_ID.BITS.combine(storagePolicyID, h);
       return h;
     }
@@ -126,21 +139,27 @@ public class INodeFile extends INodeWithAdditionalFields
 
   private long header = 0L;
 
-  private BlockInfoContiguous[] blocks;
+  private BlockInfo[] blocks;
 
   INodeFile(long id, byte[] name, PermissionStatus permissions, long mtime,
-            long atime, BlockInfoContiguous[] blklist, short replication,
+            long atime, BlockInfo[] blklist, short replication,
             long preferredBlockSize) {
     this(id, name, permissions, mtime, atime, blklist, replication,
-         preferredBlockSize, (byte) 0);
+        preferredBlockSize, (byte) 0, false);
   }
 
   INodeFile(long id, byte[] name, PermissionStatus permissions, long mtime,
-      long atime, BlockInfoContiguous[] blklist, short replication,
+      long atime, BlockInfo[] blklist, short replication,
-      long preferredBlockSize, byte storagePolicyID) {
+      long preferredBlockSize, byte storagePolicyID, boolean isStriped) {
     super(id, name, permissions, mtime, atime);
-    header = HeaderFormat.toLong(preferredBlockSize, replication, storagePolicyID);
+    header = HeaderFormat.toLong(preferredBlockSize, replication, isStriped,
-    this.blocks = blklist;
+        storagePolicyID);
+    if (blklist != null && blklist.length > 0) {
+      for (BlockInfo b : blklist) {
+        Preconditions.checkArgument(b.isStriped() == isStriped);
+      }
+    }
+    setBlocks(blklist);
   }
   
   public INodeFile(INodeFile that) {
@@ -177,27 +196,6 @@ public class INodeFile extends INodeWithAdditionalFields
         && getXAttrFeature() == other.getXAttrFeature();
   }
 
-  /* Start of StripedBlock Feature */
-
-  public final FileWithStripedBlocksFeature getStripedBlocksFeature() {
-    return getFeature(FileWithStripedBlocksFeature.class);
-  }
-
-  public FileWithStripedBlocksFeature addStripedBlocksFeature() {
-    assert blocks == null || blocks.length == 0:
-        "The file contains contiguous blocks";
-    assert !isStriped();
-    this.setFileReplication((short) 0);
-    FileWithStripedBlocksFeature sb = new FileWithStripedBlocksFeature();
-    addFeature(sb);
-    return sb;
-  }
-
-  /** Used to make sure there is no contiguous block related info */
-  private boolean hasNoContiguousBlock() {
-    return (blocks == null || blocks.length == 0) && getFileReplication() == 0;
-  }
-
   /* Start of Under-Construction Feature */
 
   /**
@@ -232,7 +230,7 @@ public class INodeFile extends INodeWithAdditionalFields
         "file is no longer under construction");
     FileUnderConstructionFeature uc = getFileUnderConstructionFeature();
     if (uc != null) {
-      assertAllBlocksComplete(getBlocks());
+      assertAllBlocksComplete();
       removeFeature(uc);
       this.setModificationTime(mtime);
     }
@@ -240,32 +238,21 @@ public class INodeFile extends INodeWithAdditionalFields
   }
 
   /** Assert all blocks are complete. */
-  private void assertAllBlocksComplete(BlockInfo[] blks) {
+  private void assertAllBlocksComplete() {
-    if (blks == null) {
+    if (blocks == null) {
       return;
     }
-    for (int i = 0; i < blks.length; i++) {
+    for (int i = 0; i < blocks.length; i++) {
-      Preconditions.checkState(blks[i].isComplete(), "Failed to finalize"
+      Preconditions.checkState(blocks[i].isComplete(), "Failed to finalize"
           + " %s %s since blocks[%s] is non-complete, where blocks=%s.",
-          getClass().getSimpleName(), this, i, Arrays.asList(blks));
+          getClass().getSimpleName(), this, i, Arrays.asList(blocks));
     }
   }
 
-  /**
-   * Instead of adding a new block, this function is usually used while loading
-   * fsimage or converting the last block to UC/Complete.
-   */
   @Override // BlockCollection
   public void setBlock(int index, BlockInfo blk) {
-    FileWithStripedBlocksFeature sb = getStripedBlocksFeature();
+    Preconditions.checkArgument(blk.isStriped() == this.isStriped());
-    if (sb == null) {
+    this.blocks[index] = blk;
-      assert !blk.isStriped();
-      this.blocks[index] = (BlockInfoContiguous) blk;
-    } else {
-      assert blk.isStriped();
-      assert hasNoContiguousBlock();
-      sb.setBlock(index, (BlockInfoStriped) blk);
-    }
   }
 
   @Override // BlockCollection, the file should be under construction
@@ -278,15 +265,13 @@ public class INodeFile extends INodeWithAdditionalFields
     }
 
     final BlockInfo ucBlock;
-    FileWithStripedBlocksFeature sb = getStripedBlocksFeature();
+    if (isStriped()) {
-    if (sb == null) {
+      Preconditions.checkState(lastBlock.isStriped());
-      assert !lastBlock.isStriped();
+      ucBlock = ((BlockInfoStriped) lastBlock)
-      ucBlock = ((BlockInfoContiguous) lastBlock)
           .convertToBlockUnderConstruction(UNDER_CONSTRUCTION, locations);
     } else {
-      assert hasNoContiguousBlock();
+      Preconditions.checkState(!lastBlock.isStriped());
-      assert lastBlock.isStriped();
+      ucBlock = ((BlockInfoContiguous) lastBlock)
-      ucBlock = ((BlockInfoStriped) lastBlock)
           .convertToBlockUnderConstruction(UNDER_CONSTRUCTION, locations);
     }
     setBlock(numBlocks() - 1, ucBlock);
@@ -299,27 +284,21 @@ public class INodeFile extends INodeWithAdditionalFields
   BlockInfoUnderConstruction removeLastBlock(Block oldblock) {
     Preconditions.checkState(isUnderConstruction(),
         "file is no longer under construction");
-    FileWithStripedBlocksFeature sb = getStripedBlocksFeature();
+    if (blocks == null || blocks.length == 0) {
-    if (sb == null) {
+      return null;
-      if (blocks == null || blocks.length == 0) {
-        return null;
-      }
-      int size_1 = blocks.length - 1;
-      if (!blocks[size_1].equals(oldblock)) {
-        return null;
-      }
-
-      BlockInfoContiguousUnderConstruction uc =
-          (BlockInfoContiguousUnderConstruction)blocks[size_1];
-      //copy to a new list
-      BlockInfoContiguous[] newlist = new BlockInfoContiguous[size_1];
-      System.arraycopy(blocks, 0, newlist, 0, size_1);
-      setContiguousBlocks(newlist);
-      return uc;
-    } else {
-      assert hasNoContiguousBlock();
-      return sb.removeLastBlock(oldblock);
     }
+    int size_1 = blocks.length - 1;
+    if (!blocks[size_1].equals(oldblock)) {
+      return null;
+    }
+
+    BlockInfoUnderConstruction uc =
+        (BlockInfoUnderConstruction)blocks[size_1];
+    //copy to a new list
+    BlockInfo[] newlist = new BlockInfo[size_1];
+    System.arraycopy(blocks, 0, newlist, 0, size_1);
+    setBlocks(newlist);
+    return uc;
   }
 
   /* End of Under-Construction Feature */
@@ -401,7 +380,7 @@ public class INodeFile extends INodeWithAdditionalFields
 
   /** The same as getFileReplication(null). */
   @Override // INodeFileAttributes
-  // TODO striped
+  // TODO properly handle striped files
   public final short getFileReplication() {
     return getFileReplication(CURRENT_STATE_ID);
   }
@@ -466,6 +445,16 @@ public class INodeFile extends INodeWithAdditionalFields
     setStoragePolicyID(storagePolicyId);
   }
 
+
+  /**
+   * @return true if the file is in the striping layout.
+   */
+  @VisibleForTesting
+  @Override
+  public boolean isStriped() {
+    return HeaderFormat.isStriped(header);
+  }
+
   @Override // INodeFileAttributes
   public long getHeaderLong() {
     return header;
@@ -474,17 +463,6 @@ public class INodeFile extends INodeWithAdditionalFields
   /** @return the blocks of the file. */
   @Override // BlockCollection
   public BlockInfo[] getBlocks() {
-    FileWithStripedBlocksFeature sb = getStripedBlocksFeature();
-    if (sb != null) {
-      assert hasNoContiguousBlock();
-      return sb.getBlocks();
-    } else {
-      return this.blocks;
-    }
-  }
-
-  /** Used by snapshot diff */
-  public BlockInfoContiguous[] getContiguousBlocks() {
     return this.blocks;
   }
 
@@ -507,16 +485,11 @@ public class INodeFile extends INodeWithAdditionalFields
   }
 
   /** Used during concat to update the BlockCollection for each block */
-  private void updateBlockCollection() {
+  void updateBlockCollection() {
-    if (blocks != null && blocks.length > 0) {
+    if (blocks != null) {
-      for(BlockInfoContiguous b : blocks) {
+      for(BlockInfo b : blocks) {
         b.setBlockCollection(this);
       }
-    } else {
-      FileWithStripedBlocksFeature sb = getStripedBlocksFeature();
-      if (sb != null) {
-        sb.updateBlockCollection(this);
-      }
     }
   }
 
@@ -527,11 +500,12 @@ public class INodeFile extends INodeWithAdditionalFields
     int size = this.blocks.length;
     int totalAddedBlocks = 0;
     for(INodeFile f : inodes) {
+      Preconditions.checkState(f.isStriped() == this.isStriped());
       totalAddedBlocks += f.blocks.length;
     }
     
-    BlockInfoContiguous[] newlist =
+    BlockInfo[] newlist =
-        new BlockInfoContiguous[size + totalAddedBlocks];
+        new BlockInfo[size + totalAddedBlocks];
     System.arraycopy(this.blocks, 0, newlist, 0, size);
     
     for(INodeFile in: inodes) {
@@ -539,43 +513,35 @@ public class INodeFile extends INodeWithAdditionalFields
       size += in.blocks.length;
     }
 
-    setContiguousBlocks(newlist);
+    setBlocks(newlist);
     updateBlockCollection();
   }
   
   /**
-   * add a contiguous block to the block list
+   * add a block to the block list
    */
-  private void addContiguousBlock(BlockInfoContiguous newblock) {
+  void addBlock(BlockInfo newblock) {
+    Preconditions.checkArgument(newblock.isStriped() == this.isStriped());
     if (this.blocks == null) {
-      this.setContiguousBlocks(new BlockInfoContiguous[]{newblock});
+      this.setBlocks(new BlockInfo[]{newblock});
     } else {
       int size = this.blocks.length;
-      BlockInfoContiguous[] newlist = new BlockInfoContiguous[size + 1];
+      BlockInfo[] newlist = new BlockInfo[size + 1];
       System.arraycopy(this.blocks, 0, newlist, 0, size);
       newlist[size] = newblock;
-      this.setContiguousBlocks(newlist);
+      this.setBlocks(newlist);
-    }
-  }
-
-  /** add a striped or contiguous block */
-  void addBlock(BlockInfo newblock) {
-    FileWithStripedBlocksFeature sb = getStripedBlocksFeature();
-    if (sb == null) {
-      assert !newblock.isStriped();
-      addContiguousBlock((BlockInfoContiguous) newblock);
-    } else {
-      assert newblock.isStriped();
-      assert hasNoContiguousBlock();
-      sb.addBlock((BlockInfoStriped) newblock);
     }
   }
 
   /** Set the blocks. */
-  public void setContiguousBlocks(BlockInfoContiguous[] blocks) {
+  private void setBlocks(BlockInfo[] blocks) {
     this.blocks = blocks;
   }
 
+  public void clearBlocks() {
+    setBlocks(null);
+  }
+
   @Override
   public void cleanSubtree(ReclaimContext reclaimContext,
       final int snapshot, int priorSnapshotId) {
@@ -623,19 +589,13 @@ public class INodeFile extends INodeWithAdditionalFields
   }
 
   public void clearFile(ReclaimContext reclaimContext) {
-    BlockInfo[] blks = getBlocks();
+    if (blocks != null && reclaimContext.collectedBlocks != null) {
-    if (blks != null && reclaimContext.collectedBlocks != null) {
+      for (BlockInfo blk : blocks) {
-      for (BlockInfo blk : blks) {
         reclaimContext.collectedBlocks.addDeleteBlock(blk);
         blk.setBlockCollection(null);
       }
     }
-    setContiguousBlocks(null);
+    clearBlocks();
-
-    FileWithStripedBlocksFeature sb = getStripedBlocksFeature();
-    if (sb != null) {
-      sb.clear();
-    }
     if (getAclFeature() != null) {
       AclStorage.removeAclFeature(getAclFeature());
     }
@@ -677,7 +637,7 @@ public class INodeFile extends INodeWithAdditionalFields
     if (isStriped()) {
       return computeQuotaUsageWithStriped(bsp, counts);
     }
-    
+
     if (last < lastSnapshotId) {
       ssDeltaNoReplication = computeFileSize(true, false);
       replication = getFileReplication();
@@ -790,33 +750,27 @@ public class INodeFile extends INodeWithAdditionalFields
    * @return file size
    */
   public final long computeFileSize(boolean includesLastUcBlock,
-                                    boolean usePreferredBlockSize4LastUcBlock) {
+      boolean usePreferredBlockSize4LastUcBlock) {
-    BlockInfo[] blockInfos = getBlocks();
+    if (blocks == null || blocks.length == 0) {
-    // In case of contiguous blocks
-    if (blockInfos == null || blockInfos.length == 0) {
       return 0;
     }
-    final int last = blockInfos.length - 1;
+    final int last = blocks.length - 1;
     //check if the last block is BlockInfoUnderConstruction
-    long size = blockInfos[last].getNumBytes();
+    BlockInfo lastBlk = blocks[last];
-    if (blockInfos[last] instanceof BlockInfoContiguousUnderConstruction) {
+    long size = lastBlk.getNumBytes();
-      if (!includesLastUcBlock) {
+    if (lastBlk instanceof BlockInfoUnderConstruction) {
-        size = 0;
+       if (!includesLastUcBlock) {
-      } else if (usePreferredBlockSize4LastUcBlock) {
+         size = 0;
-        size = getPreferredBlockSize();
+       } else if (usePreferredBlockSize4LastUcBlock) {
-      }
+         size = isStriped()?
-    } else if (blockInfos[last] instanceof BlockInfoStripedUnderConstruction) {
+             getPreferredBlockSize() *
-      if (!includesLastUcBlock) {
+                 ((BlockInfoStriped)lastBlk).getDataBlockNum() :
-        size = 0;
+             getPreferredBlockSize();
-      } else if (usePreferredBlockSize4LastUcBlock) {
+       }
-        BlockInfoStripedUnderConstruction blockInfoStripedUC
-            = (BlockInfoStripedUnderConstruction) blockInfos[last];
-        size = getPreferredBlockSize() * blockInfoStripedUC.getDataBlockNum();
-      }
     }
     //sum other blocks
     for (int i = 0; i < last; i++) {
-      size += blockInfos[i].getNumBytes();
+      size += blocks[i].getNumBytes();
     }
     return size;
   }
@@ -828,41 +782,30 @@ public class INodeFile extends INodeWithAdditionalFields
    */
   public final QuotaCounts storagespaceConsumed(BlockStoragePolicy bsp) {
     if (isStriped()) {
-      return storagespaceConsumedWithStriped();
+      return storagespaceConsumedStriped();
     } else {
-      return storagespaceConsumedWithReplication(bsp);
+      return storagespaceConsumedContiguous(bsp);
     }
   }
 
   // TODO: support EC with heterogeneous storage
-  public final QuotaCounts storagespaceConsumedWithStriped() {
+  public final QuotaCounts storagespaceConsumedStriped() {
     QuotaCounts counts = new QuotaCounts.Builder().build();
-    BlockInfo[] blockInfos = getBlocks();
+    if (blocks == null || blocks.length == 0) {
-    if (blockInfos == null || blockInfos.length == 0) {
       return counts;
     }
 
-    long size;
+    for (BlockInfo b : blocks) {
-    final int last = blockInfos.length - 1;
+      Preconditions.checkState(b.isStriped());
-    if (blockInfos[last] instanceof BlockInfoStripedUnderConstruction) {
+      long blockSize = b.isComplete() ?
-      BlockInfoStripedUnderConstruction blockInfoStripedUC
+          ((BlockInfoStriped)b).spaceConsumed() : getPreferredBlockSize() *
-          =(BlockInfoStripedUnderConstruction)blockInfos[last];
+          ((BlockInfoStriped)b).getTotalBlockNum();
-      size = getPreferredBlockSize() * blockInfoStripedUC.getTotalBlockNum();
+      counts.addStorageSpace(blockSize);
-    } else {
-      // In case of last block is complete
-      BlockInfoStriped blockInfoStriped = (BlockInfoStriped)blockInfos[last];
-      size = blockInfoStriped.spaceConsumed();
     }
-    for (int i = 0; i < last; i++) {
-      BlockInfoStriped blockInfoStriped = (BlockInfoStriped)blockInfos[i];
-      size += blockInfoStriped.spaceConsumed();
-    }
-
-    counts.addStorageSpace(size);
     return  counts;
   }
 
-  public final QuotaCounts storagespaceConsumedWithReplication(
+  public final QuotaCounts storagespaceConsumedContiguous(
       BlockStoragePolicy bsp) {
     QuotaCounts counts = new QuotaCounts.Builder().build();
     final Iterable<BlockInfo> blocks;
@@ -874,7 +817,7 @@ public class INodeFile extends INodeWithAdditionalFields
       Set<BlockInfo> allBlocks = new HashSet<>(Arrays.asList(getBlocks()));
       List<FileDiff> diffs = sf.getDiffs().asList();
       for(FileDiff diff : diffs) {
-        BlockInfoContiguous[] diffBlocks = diff.getBlocks();
+        BlockInfo[] diffBlocks = diff.getBlocks();
         if (diffBlocks != null) {
           allBlocks.addAll(Arrays.asList(diffBlocks));
         }
@@ -903,32 +846,20 @@ public class INodeFile extends INodeWithAdditionalFields
    * Return the penultimate allocated block for this file.
    */
   BlockInfo getPenultimateBlock() {
-    BlockInfo[] blks = getBlocks();
+    if (blocks == null || blocks.length <= 1) {
-    return (blks == null || blks.length <= 1) ?
+      return null;
-        null : blks[blks.length - 2];
+    }
+    return blocks[blocks.length - 2];
   }
 
   @Override
   public BlockInfo getLastBlock() {
-    FileWithStripedBlocksFeature sb = getStripedBlocksFeature();
+    return blocks == null || blocks.length == 0? null: blocks[blocks.length-1];
-    if (sb == null) {
-      return blocks == null || blocks.length == 0 ?
-          null : blocks[blocks.length - 1];
-    } else {
-      assert hasNoContiguousBlock();
-      return sb.getLastBlock();
-    }
   }
 
   @Override
   public int numBlocks() {
-    FileWithStripedBlocksFeature sb = getStripedBlocksFeature();
+    return blocks == null ? 0 : blocks.length;
-    if (sb == null) {
-      return blocks == null ? 0 : blocks.length;
-    } else {
-      assert hasNoContiguousBlock();
-      return sb.numBlocks();
-    }
   }
 
   @VisibleForTesting
@@ -939,8 +870,7 @@ public class INodeFile extends INodeWithAdditionalFields
     out.print(", fileSize=" + computeFileSize(snapshotId));
     // only compare the first block
     out.print(", blocks=");
-    BlockInfo[] blks = getBlocks();
+    out.print(blocks == null || blocks.length == 0? null: blocks[0]);
-    out.print(blks == null || blks.length == 0? null: blks[0]);
     out.println();
   }
 
@@ -1033,24 +963,15 @@ public class INodeFile extends INodeWithAdditionalFields
   }
 
   void truncateBlocksTo(int n) {
-    FileWithStripedBlocksFeature sb = getStripedBlocksFeature();
+    final BlockInfo[] newBlocks;
-    if (sb == null) {
-      truncateContiguousBlocks(n);
-    } else {
-      sb.truncateStripedBlocks(n);
-    }
-  }
-
-  private void truncateContiguousBlocks(int n) {
-    final BlockInfoContiguous[] newBlocks;
     if (n == 0) {
-      newBlocks = BlockInfoContiguous.EMPTY_ARRAY;
+      newBlocks = BlockInfo.EMPTY_ARRAY;
     } else {
-      newBlocks = new BlockInfoContiguous[n];
+      newBlocks = new BlockInfo[n];
-      System.arraycopy(blocks, 0, newBlocks, 0, n);
+      System.arraycopy(getBlocks(), 0, newBlocks, 0, n);
     }
     // set new blocks
-    setContiguousBlocks(newBlocks);
+    setBlocks(newBlocks);
   }
 
   /**
@@ -1059,10 +980,11 @@ public class INodeFile extends INodeWithAdditionalFields
    * snapshots. Since we do not support truncation with striped blocks,
    * we only need to handle contiguous blocks here.
    */
-  public void collectBlocksBeyondSnapshot(BlockInfoContiguous[] snapshotBlocks,
+  public void collectBlocksBeyondSnapshot(BlockInfo[] snapshotBlocks,
                                           BlocksMapUpdateInfo collectedBlocks) {
-    BlockInfoContiguous[] oldBlocks = this.blocks;
+    Preconditions.checkState(!isStriped());
-    if (snapshotBlocks == null || oldBlocks == null)
+    BlockInfo[] oldBlocks = getBlocks();
+    if(snapshotBlocks == null || oldBlocks == null)
       return;
     // Skip blocks in common between the file and the snapshot
     int n = 0;
@@ -1070,7 +992,7 @@ public class INodeFile extends INodeWithAdditionalFields
           oldBlocks[n] == snapshotBlocks[n]) {
       n++;
     }
-    truncateContiguousBlocks(n);
+    truncateBlocksTo(n);
     // Collect the remaining blocks of the file
     while(n < oldBlocks.length) {
       collectedBlocks.addDeleteBlock(oldBlocks[n++]);
@@ -1085,7 +1007,7 @@ public class INodeFile extends INodeWithAdditionalFields
     FileWithSnapshotFeature sf = getFileWithSnapshotFeature();
     if(sf == null)
       return;
-    BlockInfoContiguous[] snapshotBlocks =
+    BlockInfo[] snapshotBlocks =
         getDiffs().findEarlierSnapshotBlocks(snapshotId);
     if(snapshotBlocks == null)
       return;
@@ -1099,23 +1021,14 @@ public class INodeFile extends INodeWithAdditionalFields
   /**
    * @return true if the block is contained in a snapshot or false otherwise.
    */
-  boolean isBlockInLatestSnapshot(BlockInfoContiguous block) {
+  boolean isBlockInLatestSnapshot(BlockInfo block) {
     FileWithSnapshotFeature sf = this.getFileWithSnapshotFeature();
     if (sf == null || sf.getDiffs() == null) {
       return false;
     }
-    BlockInfoContiguous[] snapshotBlocks = getDiffs()
+    BlockInfo[] snapshotBlocks = getDiffs()
         .findEarlierSnapshotBlocks(getDiffs().getLastSnapshotId());
     return snapshotBlocks != null &&
         Arrays.asList(snapshotBlocks).contains(block);
   }
-
-  /**
-   * @return true if the file is in the striping layout.
-   */
-  @VisibleForTesting
-  @Override
-  public boolean isStriped() {
-    return getStripedBlocksFeature() != null;
-  }
 }

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

@@ -29,6 +29,9 @@ public interface INodeFileAttributes extends INodeAttributes {
   /** @return the file replication. */
   public short getFileReplication();
 
+  /** @return whether the file is striped (instead of contiguous) */
+  public boolean isStriped();
+
   /** @return preferred block size in bytes */
   public long getPreferredBlockSize();
 
@@ -47,10 +50,10 @@ public interface INodeFileAttributes extends INodeAttributes {
     public SnapshotCopy(byte[] name, PermissionStatus permissions,
         AclFeature aclFeature, long modificationTime, long accessTime,
         short replication, long preferredBlockSize,
-        byte storagePolicyID, XAttrFeature xAttrsFeature) {
+        byte storagePolicyID, XAttrFeature xAttrsFeature, boolean isStriped) {
       super(name, permissions, aclFeature, modificationTime, accessTime, 
           xAttrsFeature);
-      header = HeaderFormat.toLong(preferredBlockSize, replication,
+      header = HeaderFormat.toLong(preferredBlockSize, replication, isStriped,
           storagePolicyID);
     }
 
@@ -69,6 +72,11 @@ public interface INodeFileAttributes extends INodeAttributes {
       return HeaderFormat.getReplication(header);
     }
 
+    @Override
+    public boolean isStriped() {
+      return HeaderFormat.isStriped(header);
+    }
+
     @Override
     public long getPreferredBlockSize() {
       return HeaderFormat.getPreferredBlockSize(header);

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

@@ -233,7 +233,8 @@ public class FSImageFormatPBSnapshot {
               .toByteArray(), permission, acl, fileInPb.getModificationTime(),
               fileInPb.getAccessTime(), (short) fileInPb.getReplication(),
               fileInPb.getPreferredBlockSize(),
-              (byte)fileInPb.getStoragePolicyID(), xAttrs);
+              (byte)fileInPb.getStoragePolicyID(), xAttrs,
+              fileInPb.getIsStriped());
         }
 
         FileDiff diff = new FileDiff(pbf.getSnapshotId(), copy, null,

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

@@ -21,6 +21,7 @@ import java.io.DataOutput;
 import java.io.IOException;
 import java.util.Arrays;
 
+import org.apache.hadoop.hdfs.server.blockmanagement.BlockInfo;
 import org.apache.hadoop.hdfs.server.blockmanagement.BlockInfoContiguous;
 import org.apache.hadoop.hdfs.server.namenode.FSImageSerialization;
 import org.apache.hadoop.hdfs.server.namenode.INode;
@@ -38,7 +39,7 @@ public class FileDiff extends
   /** The file size at snapshot creation time. */
   private final long fileSize;
   /** A copy of the INodeFile block list. Used in truncate. */
-  private BlockInfoContiguous[] blocks;
+  private BlockInfo[] blocks;
 
   FileDiff(int snapshotId, INodeFile file) {
     super(snapshotId, null, null);
@@ -64,7 +65,7 @@ public class FileDiff extends
    * up to the current {@link #fileSize}.
    * Should be done only once.
    */
-  public void setBlocks(BlockInfoContiguous[] blocks) {
+  public void setBlocks(BlockInfo[] blocks) {
     if(this.blocks != null)
       return;
     int numBlocks = 0;
@@ -73,7 +74,7 @@ public class FileDiff extends
     this.blocks = Arrays.copyOf(blocks, numBlocks);
   }
 
-  public BlockInfoContiguous[] getBlocks() {
+  public BlockInfo[] getBlocks() {
     return blocks;
   }
 
@@ -118,7 +119,7 @@ public class FileDiff extends
     if (blocks == null || collectedBlocks == null) {
       return;
     }
-    for (BlockInfoContiguous blk : blocks) {
+    for (BlockInfo blk : blocks) {
       collectedBlocks.addDeleteBlock(blk);
     }
     blocks = null;

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

@@ -56,20 +56,20 @@ public class FileDiffList extends
     final FileDiff diff =
         super.saveSelf2Snapshot(latestSnapshotId, iNodeFile, snapshotCopy);
     if (withBlocks) {  // Store blocks if this is the first update
-      BlockInfoContiguous[] blks = iNodeFile.getContiguousBlocks();
+      BlockInfo[] blks = iNodeFile.getBlocks();
       assert blks != null;
       diff.setBlocks(blks);
     }
   }
 
-  public BlockInfoContiguous[] findEarlierSnapshotBlocks(int snapshotId) {
+  public BlockInfo[] findEarlierSnapshotBlocks(int snapshotId) {
     assert snapshotId != Snapshot.NO_SNAPSHOT_ID : "Wrong snapshot id";
     if (snapshotId == Snapshot.CURRENT_STATE_ID) {
       return null;
     }
     List<FileDiff> diffs = this.asList();
     int i = Collections.binarySearch(diffs, snapshotId);
-    BlockInfoContiguous[] blocks = null;
+    BlockInfo[] blocks = null;
     for(i = i >= 0 ? i : -i-2; i >= 0; i--) {
       blocks = diffs.get(i).getBlocks();
       if(blocks != null) {
@@ -79,14 +79,14 @@ public class FileDiffList extends
     return blocks;
   }
 
-  public BlockInfoContiguous[] findLaterSnapshotBlocks(int snapshotId) {
+  public BlockInfo[] findLaterSnapshotBlocks(int snapshotId) {
     assert snapshotId != Snapshot.NO_SNAPSHOT_ID : "Wrong snapshot id";
     if (snapshotId == Snapshot.CURRENT_STATE_ID) {
       return null;
     }
     List<FileDiff> diffs = this.asList();
     int i = Collections.binarySearch(diffs, snapshotId);
-    BlockInfoContiguous[] blocks = null;
+    BlockInfo[] blocks = null;
     for (i = i >= 0 ? i+1 : -i-1; i < diffs.size(); i++) {
       blocks = diffs.get(i).getBlocks();
       if (blocks != null) {
@@ -103,7 +103,7 @@ public class FileDiffList extends
    */
   void combineAndCollectSnapshotBlocks(
       INode.ReclaimContext reclaimContext, INodeFile file, FileDiff removed) {
-    BlockInfoContiguous[] removedBlocks = removed.getBlocks();
+    BlockInfo[] removedBlocks = removed.getBlocks();
     if (removedBlocks == null) {
       FileWithSnapshotFeature sf = file.getFileWithSnapshotFeature();
       assert sf != null : "FileWithSnapshotFeature is null";
@@ -117,11 +117,11 @@ public class FileDiffList extends
     if (earlierDiff != null) {
       earlierDiff.setBlocks(removedBlocks);
     }
-    BlockInfoContiguous[] earlierBlocks =
+    BlockInfo[] earlierBlocks =
         (earlierDiff == null ? new BlockInfoContiguous[]{} : earlierDiff.getBlocks());
     // Find later snapshot (or file itself) with blocks
-    BlockInfoContiguous[] laterBlocks = findLaterSnapshotBlocks(removed.getSnapshotId());
+    BlockInfo[] laterBlocks = findLaterSnapshotBlocks(removed.getSnapshotId());
-    laterBlocks = (laterBlocks == null) ? file.getContiguousBlocks() : laterBlocks;
+    laterBlocks = (laterBlocks == null) ? file.getBlocks() : laterBlocks;
     // Skip blocks, which belong to either the earlier or the later lists
     int i = 0;
     for(; i < removedBlocks.length; i++) {

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

@@ -22,7 +22,7 @@ import java.util.List;
 import org.apache.hadoop.classification.InterfaceAudience;
 import org.apache.hadoop.fs.StorageType;
 import org.apache.hadoop.hdfs.protocol.HdfsConstants;
-import org.apache.hadoop.hdfs.server.blockmanagement.BlockInfoContiguous;
+import org.apache.hadoop.hdfs.server.blockmanagement.BlockInfo;
 import org.apache.hadoop.hdfs.server.namenode.AclFeature;
 import org.apache.hadoop.hdfs.server.namenode.INode;
 import org.apache.hadoop.hdfs.server.namenode.AclStorage;
@@ -208,7 +208,7 @@ public class FileWithSnapshotFeature implements INode.Feature {
 
     // Collect blocks that should be deleted
     FileDiff last = diffs.getLast();
-    BlockInfoContiguous[] snapshotBlocks = last == null ? null : last.getBlocks();
+    BlockInfo[] snapshotBlocks = last == null ? null : last.getBlocks();
     if(snapshotBlocks == null)
       file.collectBlocksBeyondMax(max, reclaimContext.collectedBlocks());
     else

hadoop-hdfs-project/hadoop-hdfs/src/main/proto/fsimage.proto

@@ -92,11 +92,6 @@ message INodeSection {
     optional string clientMachine = 2;
   }
 
-  message StripedBlocksFeature {
-    // store striped blocks related information
-    optional uint32 cellSize = 1;
-  }
-
   message AclFeatureProto {
     /**
      * An ACL entry is represented by a 32-bit integer in Big Endian
@@ -145,7 +140,8 @@ message INodeSection {
     optional AclFeatureProto acl = 8;
     optional XAttrFeatureProto xAttrs = 9;
     optional uint32 storagePolicyID = 10;
-    optional StripedBlocksFeature stripedBlocks = 11;
+    optional bool isStriped = 11;
+    optional uint64 stripingCellSize = 12;
   }
 
   message QuotaByStorageTypeEntryProto {

hadoop-hdfs-project/hadoop-hdfs/src/test/java/org/apache/hadoop/hdfs/server/namenode/CreateEditsLog.java

@@ -23,6 +23,7 @@ import java.io.IOException;
 import org.apache.hadoop.fs.permission.FsPermission;
 import org.apache.hadoop.fs.permission.PermissionStatus;
 import org.apache.hadoop.hdfs.protocol.Block;
+import org.apache.hadoop.hdfs.server.blockmanagement.BlockInfo;
 import org.apache.hadoop.hdfs.server.blockmanagement.BlockInfoContiguous;
 import org.apache.hadoop.hdfs.server.common.GenerationStamp;
 import org.apache.hadoop.hdfs.server.common.Storage;
@@ -66,7 +67,7 @@ public class CreateEditsLog {
     INodeDirectory dirInode = new INodeDirectory(inodeId.nextValue(), null, p,
       0L);
     editLog.logMkDir(BASE_PATH, dirInode);
-    BlockInfoContiguous[] blocks = new BlockInfoContiguous[blocksPerFile];
+    BlockInfo[] blocks = new BlockInfo[blocksPerFile];
     for (int iB = 0; iB < blocksPerFile; ++iB) {
       blocks[iB] = 
        new BlockInfoContiguous(new Block(0, blockSize, BLOCK_GENERATION_STAMP),
@@ -97,7 +98,7 @@ public class CreateEditsLog {
         editLog.logMkDir(currentDir, dirInode);
       }
       INodeFile fileUc = new INodeFile(inodeId.nextValue(), null,
-          p, 0L, 0L, BlockInfoContiguous.EMPTY_ARRAY, replication, blockSize);
+          p, 0L, 0L, BlockInfo.EMPTY_ARRAY, replication, blockSize);
       fileUc.toUnderConstruction("", "");
       editLog.logOpenFile(filePath, fileUc, false, false);
       editLog.logCloseFile(filePath, inode);

hadoop-hdfs-project/hadoop-hdfs/src/test/java/org/apache/hadoop/hdfs/server/namenode/TestAddStripedBlocks.java

@@ -333,7 +333,7 @@ public class TestAddStripedBlocks {
     INodeFile fileNode = ns.getFSDirectory().getINode(filePath.toString()).
         asFile();
     Assert.assertTrue(fileNode.isStriped());
-    BlockInfoStriped stored = fileNode.getStripedBlocksFeature().getBlocks()[0];
+    BlockInfo stored = fileNode.getBlocks()[0];
     BlockManagerTestUtil.updateState(ns.getBlockManager());
     Assert.assertEquals(0, ns.getCorruptReplicaBlocks());
 

hadoop-hdfs-project/hadoop-hdfs/src/test/java/org/apache/hadoop/hdfs/server/namenode/TestEditLog.java

@@ -69,7 +69,7 @@ import org.apache.hadoop.hdfs.DFSConfigKeys;
 import org.apache.hadoop.hdfs.HdfsConfiguration;
 import org.apache.hadoop.hdfs.MiniDFSCluster;
 import org.apache.hadoop.hdfs.protocol.HdfsFileStatus;
-import org.apache.hadoop.hdfs.server.blockmanagement.BlockInfoContiguous;
+import org.apache.hadoop.hdfs.server.blockmanagement.BlockInfo;
 import org.apache.hadoop.hdfs.server.common.HdfsServerConstants;
 import org.apache.hadoop.hdfs.server.common.Storage.StorageDirectory;
 import org.apache.hadoop.hdfs.server.namenode.NNStorage.NameNodeDirType;
@@ -205,7 +205,7 @@ public class TestEditLog {
 
       for (int i = 0; i < numTransactions; i++) {
         INodeFile inode = new INodeFile(namesystem.dir.allocateNewInodeId(), null,
-            p, 0L, 0L, BlockInfoContiguous.EMPTY_ARRAY, replication, blockSize);
+            p, 0L, 0L, BlockInfo.EMPTY_ARRAY, replication, blockSize);
         inode.toUnderConstruction("", "");
 
         editLog.logOpenFile("/filename" + (startIndex + i), inode, false, false);

hadoop-hdfs-project/hadoop-hdfs/src/test/java/org/apache/hadoop/hdfs/server/namenode/TestFSEditLogLoader.java

@@ -46,6 +46,7 @@ import org.apache.hadoop.hdfs.DFSTestUtil;
 import org.apache.hadoop.hdfs.HdfsConfiguration;
 import org.apache.hadoop.hdfs.MiniDFSCluster;
 import org.apache.hadoop.hdfs.protocol.ErasureCodingZone;
+import org.apache.hadoop.hdfs.server.blockmanagement.BlockInfo;
 import org.apache.hadoop.hdfs.server.common.HdfsServerConstants;
 import org.apache.hadoop.hdfs.DistributedFileSystem;
 import org.apache.hadoop.hdfs.protocol.HdfsConstants;
@@ -468,7 +469,7 @@ public class TestFSEditLogLoader {
           new Block(blkId, blkNumBytes, timestamp), testSchema, cellSize);
       INodeFile file = (INodeFile)fns.getFSDirectory().getINode(testFilePath);
       file.toUnderConstruction(clientName, clientMachine);
-      file.getStripedBlocksFeature().addBlock(stripedBlk);
+      file.addBlock(stripedBlk);
       fns.getEditLog().logAddBlock(testFilePath, file);
       file.toCompleteFile(System.currentTimeMillis());
 
@@ -483,14 +484,14 @@ public class TestFSEditLogLoader {
 
       assertTrue(inodeLoaded.isStriped());
 
-      BlockInfoStriped[] blks = (BlockInfoStriped[])inodeLoaded.getBlocks();
+      BlockInfo[] blks = inodeLoaded.getBlocks();
       assertEquals(1, blks.length);
       assertEquals(blkId, blks[0].getBlockId());
       assertEquals(blkNumBytes, blks[0].getNumBytes());
       assertEquals(timestamp, blks[0].getGenerationStamp());
-      assertEquals(blockNum, blks[0].getDataBlockNum());
+      assertEquals(blockNum, ((BlockInfoStriped)blks[0]).getDataBlockNum());
-      assertEquals(parityNum, blks[0].getParityBlockNum());
+      assertEquals(parityNum, ((BlockInfoStriped)blks[0]).getParityBlockNum());
-      assertEquals(cellSize, blks[0].getCellSize());
+      assertEquals(cellSize, ((BlockInfoStriped)blks[0]).getCellSize());
 
       cluster.shutdown();
       cluster = null;
@@ -536,7 +537,7 @@ public class TestFSEditLogLoader {
           new Block(blkId, blkNumBytes, timestamp), testSchema, cellSize);
       INodeFile file = (INodeFile)fns.getFSDirectory().getINode(testFilePath);
       file.toUnderConstruction(clientName, clientMachine);
-      file.getStripedBlocksFeature().addBlock(stripedBlk);
+      file.addBlock(stripedBlk);
       fns.getEditLog().logAddBlock(testFilePath, file);
       file.toCompleteFile(System.currentTimeMillis());
       fns.enterSafeMode(false);
@@ -564,14 +565,15 @@ public class TestFSEditLogLoader {
 
       assertTrue(inodeLoaded.isStriped());
 
-      BlockInfoStriped[] blks = (BlockInfoStriped[])inodeLoaded.getBlocks();
+      BlockInfo[] blks = inodeLoaded.getBlocks();
       assertEquals(1, blks.length);
+      assertTrue(blks[0].isStriped());
       assertEquals(blkId, blks[0].getBlockId());
       assertEquals(newBlkNumBytes, blks[0].getNumBytes());
       assertEquals(newTimestamp, blks[0].getGenerationStamp());
-      assertEquals(blockNum, blks[0].getDataBlockNum());
+      assertEquals(blockNum, ((BlockInfoStriped)blks[0]).getDataBlockNum());
-      assertEquals(parityNum, blks[0].getParityBlockNum());
+      assertEquals(parityNum, ((BlockInfoStriped)blks[0]).getParityBlockNum());
-      assertEquals(cellSize, blks[0].getCellSize());
+      assertEquals(cellSize, ((BlockInfoStriped)blks[0]).getCellSize());
 
       cluster.shutdown();
       cluster = null;

hadoop-hdfs-project/hadoop-hdfs/src/test/java/org/apache/hadoop/hdfs/server/namenode/TestFSImage.java

@@ -152,9 +152,8 @@ public class TestFSImage {
     short replication = 3;
     long preferredBlockSize = 128*1024*1024;
     INodeFile file = new INodeFile(id, name, permissionStatus, mtime, atime,
-        blks, replication, preferredBlockSize);
+        blks, replication, preferredBlockSize, (byte) 0, true);
     ByteArrayOutputStream bs = new ByteArrayOutputStream();
-    file.addStripedBlocksFeature();
 
     //construct StripedBlocks for the INode
     BlockInfoStriped[] stripedBlks = new BlockInfoStriped[3];
@@ -164,7 +163,7 @@ public class TestFSImage {
       stripedBlks[i] = new BlockInfoStriped(
               new Block(stripedBlkId + i, preferredBlockSize, timestamp),
               testSchema, cellSize);
-      file.getStripedBlocksFeature().addBlock(stripedBlks[i]);
+      file.addBlock(stripedBlks[i]);
     }
 
     final String client = "testClient";
@@ -206,7 +205,7 @@ public class TestFSImage {
     assertEquals(isUC ? mtime : atime, fileByLoaded.getAccessTime());
     // TODO for striped blocks, we currently save and load them as contiguous
     // blocks to/from legacy fsimage
-    assertEquals(3, fileByLoaded.getContiguousBlocks().length);
+    assertEquals(3, fileByLoaded.getBlocks().length);
     assertEquals(preferredBlockSize, fileByLoaded.getPreferredBlockSize());
 
     if (isUC) {
@@ -405,13 +404,12 @@ public class TestFSImage {
       // check the information of striped blocks
       FSNamesystem fsn = cluster.getNamesystem();
       INodeFile inode = fsn.dir.getINode(file.toString()).asFile();
-      FileWithStripedBlocksFeature sb = inode.getStripedBlocksFeature();
+      assertTrue(inode.isStriped());
-      assertNotNull(sb);
+      BlockInfo[] blks = inode.getBlocks();
-      BlockInfoStriped[] blks = sb.getBlocks();
       assertEquals(1, blks.length);
       assertTrue(blks[0].isStriped());
-      assertEquals(HdfsConstants.NUM_DATA_BLOCKS, blks[0].getDataBlockNum());
+      assertEquals(HdfsConstants.NUM_DATA_BLOCKS, ((BlockInfoStriped)blks[0]).getDataBlockNum());
-      assertEquals(HdfsConstants.NUM_PARITY_BLOCKS, blks[0].getParityBlockNum());
+      assertEquals(HdfsConstants.NUM_PARITY_BLOCKS, ((BlockInfoStriped)blks[0]).getParityBlockNum());
     } finally {
       cluster.shutdown();
     }

hadoop-hdfs-project/hadoop-hdfs/src/test/java/org/apache/hadoop/hdfs/server/namenode/TestINodeFile.java

@@ -92,7 +92,7 @@ public class TestINodeFile {
 
   private static INodeFile createINodeFile(byte storagePolicyID) {
     return new INodeFile(HdfsConstants.GRANDFATHER_INODE_ID, null, perm, 0L, 0L,
-        null, (short)3, 1024L, storagePolicyID);
+        null, (short)3, 1024L, storagePolicyID, false);
   }
 
   @Test

hadoop-hdfs-project/hadoop-hdfs/src/test/java/org/apache/hadoop/hdfs/server/namenode/TestStripedINodeFile.java

@@ -57,14 +57,13 @@ public class TestStripedINodeFile {
 
   private static INodeFile createStripedINodeFile() {
     return new INodeFile(HdfsConstants.GRANDFATHER_INODE_ID, null, perm, 0L, 0L,
-        null, (short)0, 1024L, HdfsServerConstants.COLD_STORAGE_POLICY_ID);
+        null, (short)0, 1024L, HdfsServerConstants.COLD_STORAGE_POLICY_ID, true);
   }
 
   @Test
   public void testBlockStripedFeature()
       throws IOException, InterruptedException{
     INodeFile inf = createStripedINodeFile();
-    inf.addStripedBlocksFeature();
     assertTrue(inf.isStriped());
   }
 
@@ -80,7 +79,6 @@ public class TestStripedINodeFile {
   public void testBlockStripedLength()
       throws IOException, InterruptedException {
     INodeFile inf = createStripedINodeFile();
-    inf.addStripedBlocksFeature();
     Block blk = new Block(1);
     BlockInfoStriped blockInfoStriped
         = new BlockInfoStriped(blk, testSchema, cellSize);
@@ -92,7 +90,6 @@ public class TestStripedINodeFile {
   public void testBlockStripedConsumedSpace()
       throws IOException, InterruptedException {
     INodeFile inf = createStripedINodeFile();
-    inf.addStripedBlocksFeature();
     Block blk = new Block(1);
     BlockInfoStriped blockInfoStriped
         = new BlockInfoStriped(blk, testSchema, cellSize);
@@ -110,7 +107,7 @@ public class TestStripedINodeFile {
     //  a. <Cell Size> * (<Num Stripes> - 1) * <Total Block Num> = 0
     //  b. <Num Bytes> % <Num Bytes per Stripes> = 1
     //  c. <Last Stripe Length> * <Parity Block Num> = 1 * 3
-    assertEquals(4, inf.storagespaceConsumedWithStriped().getStorageSpace());
+    assertEquals(4, inf.storagespaceConsumedStriped().getStorageSpace());
     assertEquals(4, inf.storagespaceConsumed(defaultPolicy).getStorageSpace());
   }
 
@@ -118,7 +115,6 @@ public class TestStripedINodeFile {
   public void testMultipleBlockStripedConsumedSpace()
       throws IOException, InterruptedException {
     INodeFile inf = createStripedINodeFile();
-    inf.addStripedBlocksFeature();
     Block blk1 = new Block(1);
     BlockInfoStriped blockInfoStriped1
         = new BlockInfoStriped(blk1, testSchema, cellSize);
@@ -130,7 +126,7 @@ public class TestStripedINodeFile {
     inf.addBlock(blockInfoStriped1);
     inf.addBlock(blockInfoStriped2);
     // This is the double size of one block in above case.
-    assertEquals(4 * 2, inf.storagespaceConsumedWithStriped().getStorageSpace());
+    assertEquals(4 * 2, inf.storagespaceConsumedStriped().getStorageSpace());
     assertEquals(4 * 2, inf.storagespaceConsumed(defaultPolicy).getStorageSpace());
   }
 
@@ -138,7 +134,6 @@ public class TestStripedINodeFile {
   public void testBlockStripedFileSize()
       throws IOException, InterruptedException {
     INodeFile inf = createStripedINodeFile();
-    inf.addStripedBlocksFeature();
     Block blk = new Block(1);
     BlockInfoStriped blockInfoStriped
         = new BlockInfoStriped(blk, testSchema, cellSize);
@@ -154,7 +149,6 @@ public class TestStripedINodeFile {
   public void testBlockStripedUCFileSize()
       throws IOException, InterruptedException {
     INodeFile inf = createStripedINodeFile();
-    inf.addStripedBlocksFeature();
     Block blk = new Block(1);
     BlockInfoStripedUnderConstruction bInfoStripedUC
         = new BlockInfoStripedUnderConstruction(blk, testSchema, cellSize);
@@ -168,7 +162,6 @@ public class TestStripedINodeFile {
   public void testBlockStripedComputeQuotaUsage()
       throws IOException, InterruptedException {
     INodeFile inf = createStripedINodeFile();
-    inf.addStripedBlocksFeature();
     Block blk = new Block(1);
     BlockInfoStriped blockInfoStriped
         = new BlockInfoStriped(blk, testSchema, cellSize);
@@ -190,7 +183,6 @@ public class TestStripedINodeFile {
   public void testBlockStripedUCComputeQuotaUsage()
       throws IOException, InterruptedException {
     INodeFile inf = createStripedINodeFile();
-    inf.addStripedBlocksFeature();
     Block blk = new Block(1);
     BlockInfoStripedUnderConstruction bInfoStripedUC
         = new BlockInfoStripedUnderConstruction(blk, testSchema, cellSize);

hadoop-hdfs-project/hadoop-hdfs/src/test/java/org/apache/hadoop/hdfs/server/namenode/TestTruncateQuotaUpdate.java

@@ -78,7 +78,7 @@ public class TestTruncateQuotaUpdate {
   @Test
   public void testTruncateWithSnapshotNoDivergence() {
     INodeFile file = createMockFile(BLOCKSIZE * 2 + BLOCKSIZE / 2, REPLICATION);
-    addSnapshotFeature(file, file.getContiguousBlocks());
+    addSnapshotFeature(file, file.getBlocks());
 
     // case 4: truncate to 1.5 blocks
     // all the blocks are in snapshot. truncate need to allocate a new block
@@ -152,7 +152,7 @@ public class TestTruncateQuotaUpdate {
     return new BlockInfoContiguous(b, replication);
   }
 
-  private static void addSnapshotFeature(INodeFile file, BlockInfoContiguous[] blocks) {
+  private static void addSnapshotFeature(INodeFile file, BlockInfo[] blocks) {
     FileDiff diff = mock(FileDiff.class);
     when(diff.getBlocks()).thenReturn(blocks);
     FileDiffList diffList = new FileDiffList();