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Posted to hdfs-commits@hadoop.apache.org by sz...@apache.org on 2012/12/17 04:40:30 UTC
svn commit: r1422748 - in
/hadoop/common/branches/HDFS-2802/hadoop-hdfs-project/hadoop-hdfs: ./
src/main/java/org/apache/hadoop/hdfs/
src/main/java/org/apache/hadoop/hdfs/server/namenode/
src/main/java/org/apache/hadoop/hdfs/server/namenode/snapshot/ s...
Author: szetszwo
Date: Mon Dec 17 03:40:27 2012
New Revision: 1422748
URL: http://svn.apache.org/viewvc?rev=1422748&view=rev
Log:
HDFS-4317. Change INode and its subclasses to support HDFS-4103.
Modified:
hadoop/common/branches/HDFS-2802/hadoop-hdfs-project/hadoop-hdfs/CHANGES.HDFS-2802.txt
hadoop/common/branches/HDFS-2802/hadoop-hdfs-project/hadoop-hdfs/src/main/java/org/apache/hadoop/hdfs/DFSUtil.java
hadoop/common/branches/HDFS-2802/hadoop-hdfs-project/hadoop-hdfs/src/main/java/org/apache/hadoop/hdfs/server/namenode/FSDirectory.java
hadoop/common/branches/HDFS-2802/hadoop-hdfs-project/hadoop-hdfs/src/main/java/org/apache/hadoop/hdfs/server/namenode/FSEditLogLoader.java
hadoop/common/branches/HDFS-2802/hadoop-hdfs-project/hadoop-hdfs/src/main/java/org/apache/hadoop/hdfs/server/namenode/FSImageFormat.java
hadoop/common/branches/HDFS-2802/hadoop-hdfs-project/hadoop-hdfs/src/main/java/org/apache/hadoop/hdfs/server/namenode/FSNamesystem.java
hadoop/common/branches/HDFS-2802/hadoop-hdfs-project/hadoop-hdfs/src/main/java/org/apache/hadoop/hdfs/server/namenode/INode.java
hadoop/common/branches/HDFS-2802/hadoop-hdfs-project/hadoop-hdfs/src/main/java/org/apache/hadoop/hdfs/server/namenode/INodeDirectory.java
hadoop/common/branches/HDFS-2802/hadoop-hdfs-project/hadoop-hdfs/src/main/java/org/apache/hadoop/hdfs/server/namenode/INodeDirectoryWithQuota.java
hadoop/common/branches/HDFS-2802/hadoop-hdfs-project/hadoop-hdfs/src/main/java/org/apache/hadoop/hdfs/server/namenode/INodeFile.java
hadoop/common/branches/HDFS-2802/hadoop-hdfs-project/hadoop-hdfs/src/main/java/org/apache/hadoop/hdfs/server/namenode/INodeFileUnderConstruction.java
hadoop/common/branches/HDFS-2802/hadoop-hdfs-project/hadoop-hdfs/src/main/java/org/apache/hadoop/hdfs/server/namenode/INodeSymlink.java
hadoop/common/branches/HDFS-2802/hadoop-hdfs-project/hadoop-hdfs/src/main/java/org/apache/hadoop/hdfs/server/namenode/snapshot/INodeDirectorySnapshottable.java
hadoop/common/branches/HDFS-2802/hadoop-hdfs-project/hadoop-hdfs/src/main/java/org/apache/hadoop/hdfs/server/namenode/snapshot/INodeDirectoryWithSnapshot.java
hadoop/common/branches/HDFS-2802/hadoop-hdfs-project/hadoop-hdfs/src/main/java/org/apache/hadoop/hdfs/server/namenode/snapshot/INodeFileSnapshot.java
hadoop/common/branches/HDFS-2802/hadoop-hdfs-project/hadoop-hdfs/src/main/java/org/apache/hadoop/hdfs/server/namenode/snapshot/INodeFileWithLink.java
hadoop/common/branches/HDFS-2802/hadoop-hdfs-project/hadoop-hdfs/src/main/java/org/apache/hadoop/hdfs/server/namenode/snapshot/Snapshot.java
hadoop/common/branches/HDFS-2802/hadoop-hdfs-project/hadoop-hdfs/src/main/java/org/apache/hadoop/hdfs/server/namenode/snapshot/SnapshotManager.java
hadoop/common/branches/HDFS-2802/hadoop-hdfs-project/hadoop-hdfs/src/test/java/org/apache/hadoop/hdfs/server/namenode/snapshot/SnapshotTestHelper.java
hadoop/common/branches/HDFS-2802/hadoop-hdfs-project/hadoop-hdfs/src/test/java/org/apache/hadoop/hdfs/server/namenode/snapshot/TestINodeDirectoryWithSnapshot.java
hadoop/common/branches/HDFS-2802/hadoop-hdfs-project/hadoop-hdfs/src/test/java/org/apache/hadoop/hdfs/server/namenode/snapshot/TestSnapshot.java
Modified: hadoop/common/branches/HDFS-2802/hadoop-hdfs-project/hadoop-hdfs/CHANGES.HDFS-2802.txt
URL: http://svn.apache.org/viewvc/hadoop/common/branches/HDFS-2802/hadoop-hdfs-project/hadoop-hdfs/CHANGES.HDFS-2802.txt?rev=1422748&r1=1422747&r2=1422748&view=diff
==============================================================================
--- hadoop/common/branches/HDFS-2802/hadoop-hdfs-project/hadoop-hdfs/CHANGES.HDFS-2802.txt (original)
+++ hadoop/common/branches/HDFS-2802/hadoop-hdfs-project/hadoop-hdfs/CHANGES.HDFS-2802.txt Mon Dec 17 03:40:27 2012
@@ -83,3 +83,5 @@ Branch-2802 Snapshot (Unreleased)
structure and modifications. (Jing Zhao via suresh)
HDFS-4293. Fix TestSnapshot failure. (Jing Zhao via suresh)
+
+ HDFS-4317. Change INode and its subclasses to support HDFS-4103. (szetszwo)
Modified: hadoop/common/branches/HDFS-2802/hadoop-hdfs-project/hadoop-hdfs/src/main/java/org/apache/hadoop/hdfs/DFSUtil.java
URL: http://svn.apache.org/viewvc/hadoop/common/branches/HDFS-2802/hadoop-hdfs-project/hadoop-hdfs/src/main/java/org/apache/hadoop/hdfs/DFSUtil.java?rev=1422748&r1=1422747&r2=1422748&view=diff
==============================================================================
--- hadoop/common/branches/HDFS-2802/hadoop-hdfs-project/hadoop-hdfs/src/main/java/org/apache/hadoop/hdfs/DFSUtil.java (original)
+++ hadoop/common/branches/HDFS-2802/hadoop-hdfs-project/hadoop-hdfs/src/main/java/org/apache/hadoop/hdfs/DFSUtil.java Mon Dec 17 03:40:27 2012
@@ -234,9 +234,10 @@ public class DFSUtil {
* Given a list of path components returns a path as a UTF8 String
*/
public static String byteArray2PathString(byte[][] pathComponents) {
- if (pathComponents.length == 0)
+ if (pathComponents.length == 0) {
return "";
- if (pathComponents.length == 1 && pathComponents[0].length == 0) {
+ } else if (pathComponents.length == 1
+ && (pathComponents[0] == null || pathComponents[0].length == 0)) {
return Path.SEPARATOR;
}
try {
@@ -249,9 +250,8 @@ public class DFSUtil {
}
return result.toString();
} catch (UnsupportedEncodingException ex) {
- assert false : "UTF8 encoding is not supported ";
+ throw new AssertionError("UTF-8 encoding is not supported.");
}
- return null;
}
/** Convert an object representing a path to a string. */
Modified: hadoop/common/branches/HDFS-2802/hadoop-hdfs-project/hadoop-hdfs/src/main/java/org/apache/hadoop/hdfs/server/namenode/FSDirectory.java
URL: http://svn.apache.org/viewvc/hadoop/common/branches/HDFS-2802/hadoop-hdfs-project/hadoop-hdfs/src/main/java/org/apache/hadoop/hdfs/server/namenode/FSDirectory.java?rev=1422748&r1=1422747&r2=1422748&view=diff
==============================================================================
--- hadoop/common/branches/HDFS-2802/hadoop-hdfs-project/hadoop-hdfs/src/main/java/org/apache/hadoop/hdfs/server/namenode/FSDirectory.java (original)
+++ hadoop/common/branches/HDFS-2802/hadoop-hdfs-project/hadoop-hdfs/src/main/java/org/apache/hadoop/hdfs/server/namenode/FSDirectory.java Mon Dec 17 03:40:27 2012
@@ -383,7 +383,7 @@ public class FSDirectory implements Clos
writeLock();
try {
// file is closed
- file.setModificationTimeForce(now);
+ file.setModificationTime(now);
fsImage.getEditLog().logCloseFile(path, file);
if (NameNode.stateChangeLog.isDebugEnabled()) {
NameNode.stateChangeLog.debug("DIR* FSDirectory.closeFile: "
@@ -585,8 +585,8 @@ public class FSDirectory implements Clos
+ src + " is renamed to " + dst);
}
// update modification time of dst and the parent of src
- srcInodes[srcInodes.length-2].setModificationTime(timestamp);
- dstInodes[dstInodes.length-2].setModificationTime(timestamp);
+ srcInodes[srcInodes.length-2].updateModificationTime(timestamp);
+ dstInodes[dstInodes.length-2].updateModificationTime(timestamp);
// update moved leases with new filename
getFSNamesystem().unprotectedChangeLease(src, dst);
return true;
@@ -752,8 +752,8 @@ public class FSDirectory implements Clos
"DIR* FSDirectory.unprotectedRenameTo: " + src
+ " is renamed to " + dst);
}
- srcInodes[srcInodes.length - 2].setModificationTime(timestamp);
- dstInodes[dstInodes.length - 2].setModificationTime(timestamp);
+ srcInodes[srcInodes.length - 2].updateModificationTime(timestamp);
+ dstInodes[dstInodes.length - 2].updateModificationTime(timestamp);
// update moved lease with new filename
getFSNamesystem().unprotectedChangeLease(src, dst);
@@ -994,8 +994,8 @@ public class FSDirectory implements Clos
count++;
}
- trgInode.setModificationTimeForce(timestamp);
- trgParent.setModificationTime(timestamp);
+ trgInode.setModificationTime(timestamp);
+ trgParent.updateModificationTime(timestamp);
// update quota on the parent directory ('count' files removed, 0 space)
unprotectedUpdateCount(trgINodesInPath, trgINodes.length-1, -count, 0);
}
@@ -1133,7 +1133,7 @@ public class FSDirectory implements Clos
return 0;
}
// set the parent's modification time
- inodes[inodes.length - 2].setModificationTime(mtime);
+ inodes[inodes.length - 2].updateModificationTime(mtime);
int filesRemoved = targetNode.collectSubtreeBlocksAndClear(collectedBlocks);
if (NameNode.stateChangeLog.isDebugEnabled()) {
NameNode.stateChangeLog.debug("DIR* FSDirectory.unprotectedDelete: "
@@ -1167,35 +1167,14 @@ public class FSDirectory implements Clos
}
/**
- * Replaces the specified INode.
- */
- private void replaceINodeUnsynced(String path, INode oldnode, INode newnode
- ) throws IOException {
- //remove the old node from the namespace
- if (!oldnode.removeNode()) {
- final String mess = "FSDirectory.replaceINodeUnsynced: failed to remove "
- + path;
- NameNode.stateChangeLog.warn("DIR* " + mess);
- throw new IOException(mess);
- }
-
- //add the new node
- rootDir.addINode(path, newnode);
- }
-
- /**
* Replaces the specified INodeDirectory.
*/
public void replaceINodeDirectory(String path, INodeDirectory oldnode,
INodeDirectory newnode) throws IOException {
writeLock();
try {
- replaceINodeUnsynced(path, oldnode, newnode);
-
- //update children's parent directory
- for(INode i : newnode.getChildrenList(null)) {
- i.parent = newnode;
- }
+ unprotectedReplaceINode(path, oldnode, newnode);
+ // Note that the parent of the children of the oldnode is already updated
} finally {
writeUnlock();
}
@@ -1204,32 +1183,44 @@ public class FSDirectory implements Clos
/**
* Replaces the specified INodeFile with the specified one.
*/
- public void replaceNode(String path, INodeFile oldnode, INodeFile newnode
- ) throws IOException {
+ public void replaceINodeFile(String path, INodeFile oldnode,
+ INodeFile newnode) throws IOException {
writeLock();
try {
- unprotectedReplaceNode(path, oldnode, newnode);
+ unprotectedReplaceINodeFile(path, oldnode, newnode);
} finally {
writeUnlock();
}
}
-
- void unprotectedReplaceNode(String path, INodeFile oldnode, INodeFile newnode)
- throws IOException, UnresolvedLinkException {
- assert hasWriteLock();
- INodeDirectory parent = oldnode.parent;
+
+ private void unprotectedReplaceINode(String path, INode oldnode,
+ INode newnode) throws IOException {
+ Preconditions.checkState(hasWriteLock());
+
+ INodeDirectory parent = oldnode.getParent();
// Remove the node from the namespace
- if (!oldnode.removeNode()) {
- NameNode.stateChangeLog.warn("DIR* FSDirectory.replaceNode: " +
- "failed to remove " + path);
- throw new IOException("FSDirectory.replaceNode: " +
- "failed to remove " + path);
- }
+ if (parent == null) {
+ final String mess
+ = "FSDirectory.unprotectedReplaceINode: failed to remove " + path;
+ NameNode.stateChangeLog.warn("DIR* " + mess);
+ throw new IOException(mess);
+ }
- // Parent should be non-null, otherwise oldnode.removeNode() will return
- // false
- newnode.setLocalName(oldnode.getLocalNameBytes());
+ final INode removed = parent.removeChild(oldnode);
+ Preconditions.checkState(removed == oldnode,
+ "removed != oldnode=%s, removed=%s", oldnode, removed);
+
+ parent = oldnode.getParent();
+ oldnode.setParent(null);
parent.addChild(newnode, true);
+
+ }
+
+ void unprotectedReplaceINodeFile(String path, INodeFile oldnode,
+ INodeFile newnode)
+ throws IOException, UnresolvedLinkException {
+ unprotectedReplaceINode(path, oldnode, newnode);
+ newnode.setLocalName(oldnode.getLocalNameBytes());
/* Currently oldnode and newnode are assumed to contain the same
* blocks. Otherwise, blocks need to be removed from the blocksMap.
@@ -1326,9 +1317,16 @@ public class FSDirectory implements Clos
* Get {@link INode} associated with the file / directory.
*/
public INode getINode(String src) throws UnresolvedLinkException {
+ return getINodesInPath(src).getINode(0);
+ }
+
+ /**
+ * Get {@link INode} associated with the file / directory.
+ */
+ public INodesInPath getINodesInPath(String src) throws UnresolvedLinkException {
readLock();
try {
- return rootDir.getNode(src, true);
+ return rootDir.getINodesInPath(src, true);
} finally {
readUnlock();
}
@@ -1336,6 +1334,19 @@ public class FSDirectory implements Clos
/**
* Get {@link INode} associated with the file / directory.
+ */
+ public INodesInPath getMutableINodesInPath(String src
+ ) throws UnresolvedLinkException, SnapshotAccessControlException {
+ readLock();
+ try {
+ return rootDir.getMutableINodesInPath(src, true);
+ } finally {
+ readUnlock();
+ }
+ }
+
+ /**
+ * Get {@link INode} associated with the file / directory.
* @throws SnapshotAccessControlException if path is in RO snapshot
*/
public INode getMutableINode(String src) throws UnresolvedLinkException,
@@ -2015,8 +2026,8 @@ public class FSDirectory implements Clos
}
} else {
// a non-quota directory; so replace it with a directory with quota
- INodeDirectoryWithQuota newNode =
- new INodeDirectoryWithQuota(nsQuota, dsQuota, dirNode);
+ final INodeDirectoryWithQuota newNode = new INodeDirectoryWithQuota(
+ dirNode, true, nsQuota, dsQuota);
// non-root directory node; parent != null
INodeDirectory parent = (INodeDirectory)inodes[inodes.length-2];
dirNode = newNode;
@@ -2084,7 +2095,7 @@ public class FSDirectory implements Clos
assert hasWriteLock();
boolean status = false;
if (mtime != -1) {
- inode.setModificationTimeForce(mtime);
+ inode.setModificationTime(mtime);
status = true;
}
if (atime != -1) {
Modified: hadoop/common/branches/HDFS-2802/hadoop-hdfs-project/hadoop-hdfs/src/main/java/org/apache/hadoop/hdfs/server/namenode/FSEditLogLoader.java
URL: http://svn.apache.org/viewvc/hadoop/common/branches/HDFS-2802/hadoop-hdfs-project/hadoop-hdfs/src/main/java/org/apache/hadoop/hdfs/server/namenode/FSEditLogLoader.java?rev=1422748&r1=1422747&r2=1422748&view=diff
==============================================================================
--- hadoop/common/branches/HDFS-2802/hadoop-hdfs-project/hadoop-hdfs/src/main/java/org/apache/hadoop/hdfs/server/namenode/FSEditLogLoader.java (original)
+++ hadoop/common/branches/HDFS-2802/hadoop-hdfs-project/hadoop-hdfs/src/main/java/org/apache/hadoop/hdfs/server/namenode/FSEditLogLoader.java Mon Dec 17 03:40:27 2012
@@ -281,7 +281,7 @@ public class FSEditLogLoader {
// Update the salient file attributes.
newFile.setAccessTime(addCloseOp.atime);
- newFile.setModificationTimeForce(addCloseOp.mtime);
+ newFile.setModificationTime(addCloseOp.mtime);
updateBlocks(fsDir, addCloseOp, newFile);
break;
}
@@ -303,7 +303,7 @@ public class FSEditLogLoader {
// Update the salient file attributes.
oldFile.setAccessTime(addCloseOp.atime);
- oldFile.setModificationTimeForce(addCloseOp.mtime);
+ oldFile.setModificationTime(addCloseOp.mtime);
updateBlocks(fsDir, addCloseOp, oldFile);
// Now close the file
@@ -320,8 +320,8 @@ public class FSEditLogLoader {
if (oldFile.isUnderConstruction()) {
INodeFileUnderConstruction ucFile = (INodeFileUnderConstruction) oldFile;
fsNamesys.leaseManager.removeLeaseWithPrefixPath(addCloseOp.path);
- INodeFile newFile = ucFile.convertToInodeFile();
- fsDir.unprotectedReplaceNode(addCloseOp.path, ucFile, newFile);
+ INodeFile newFile = ucFile.convertToInodeFile(ucFile.getModificationTime());
+ fsDir.unprotectedReplaceINodeFile(addCloseOp.path, ucFile, newFile);
}
break;
}
Modified: hadoop/common/branches/HDFS-2802/hadoop-hdfs-project/hadoop-hdfs/src/main/java/org/apache/hadoop/hdfs/server/namenode/FSImageFormat.java
URL: http://svn.apache.org/viewvc/hadoop/common/branches/HDFS-2802/hadoop-hdfs-project/hadoop-hdfs/src/main/java/org/apache/hadoop/hdfs/server/namenode/FSImageFormat.java?rev=1422748&r1=1422747&r2=1422748&view=diff
==============================================================================
--- hadoop/common/branches/HDFS-2802/hadoop-hdfs-project/hadoop-hdfs/src/main/java/org/apache/hadoop/hdfs/server/namenode/FSImageFormat.java (original)
+++ hadoop/common/branches/HDFS-2802/hadoop-hdfs-project/hadoop-hdfs/src/main/java/org/apache/hadoop/hdfs/server/namenode/FSImageFormat.java Mon Dec 17 03:40:27 2012
@@ -23,6 +23,7 @@ import java.io.DataInputStream;
import java.io.DataOutputStream;
import java.io.File;
import java.io.FileInputStream;
+import java.io.FileNotFoundException;
import java.io.FileOutputStream;
import java.io.IOException;
import java.nio.ByteBuffer;
@@ -36,6 +37,8 @@ import org.apache.hadoop.classification.
import org.apache.hadoop.classification.InterfaceStability;
import org.apache.hadoop.conf.Configuration;
import org.apache.hadoop.fs.Path;
+import org.apache.hadoop.fs.PathIsNotDirectoryException;
+import org.apache.hadoop.fs.UnresolvedLinkException;
import org.apache.hadoop.fs.permission.PermissionStatus;
import org.apache.hadoop.hdfs.DFSUtil;
import org.apache.hadoop.hdfs.protocol.HdfsConstants;
@@ -44,6 +47,7 @@ import org.apache.hadoop.hdfs.protocol.L
import org.apache.hadoop.hdfs.server.blockmanagement.BlockInfo;
import org.apache.hadoop.hdfs.server.blockmanagement.BlockManager;
import org.apache.hadoop.hdfs.server.common.InconsistentFSStateException;
+import org.apache.hadoop.hdfs.server.namenode.INodeDirectory.INodesInPath;
import org.apache.hadoop.hdfs.util.ReadOnlyList;
import org.apache.hadoop.io.MD5Hash;
import org.apache.hadoop.io.Text;
@@ -202,7 +206,7 @@ class FSImageFormat {
if (nsQuota != -1 || dsQuota != -1) {
fsDir.rootDir.setQuota(nsQuota, dsQuota);
}
- fsDir.rootDir.setModificationTime(root.getModificationTime());
+ fsDir.rootDir.cloneModificationTime(root);
fsDir.rootDir.clonePermissionStatus(root);
}
@@ -288,7 +292,7 @@ class FSImageFormat {
}
// check if the new inode belongs to the same parent
if(!isParent(pathComponents, parentPath)) {
- parentINode = fsDir.rootDir.getParent(pathComponents);
+ parentINode = getParentINodeDirectory(pathComponents);
parentPath = getParent(pathComponents);
}
@@ -298,12 +302,24 @@ class FSImageFormat {
}
}
+ private INodeDirectory getParentINodeDirectory(byte[][] pathComponents
+ ) throws FileNotFoundException, PathIsNotDirectoryException,
+ UnresolvedLinkException {
+ if (pathComponents.length < 2) { // root
+ return null;
+ }
+ // Gets the parent INode
+ final INodesInPath inodes = namesystem.dir.rootDir.getExistingPathINodes(
+ pathComponents, 2, false);
+ return INodeDirectory.valueOf(inodes.getINode(0), pathComponents);
+ }
+
/**
* Add the child node to parent and, if child is a file, update block map.
* This method is only used for image loading so that synchronization,
* modification time update and space count update are not needed.
*/
- void addToParent(INodeDirectory parent, INode child) {
+ private void addToParent(INodeDirectory parent, INode child) {
// NOTE: This does not update space counts for parents
if (!parent.addChild(child, false)) {
return;
@@ -389,7 +405,7 @@ class FSImageFormat {
// verify that file exists in namespace
String path = cons.getLocalName();
INodeFile oldnode = INodeFile.valueOf(fsDir.getINode(path), path);
- fsDir.replaceNode(path, oldnode, cons);
+ fsDir.replaceINodeFile(path, oldnode, cons);
namesystem.leaseManager.addLease(cons.getClientName(), path);
}
}
Modified: hadoop/common/branches/HDFS-2802/hadoop-hdfs-project/hadoop-hdfs/src/main/java/org/apache/hadoop/hdfs/server/namenode/FSNamesystem.java
URL: http://svn.apache.org/viewvc/hadoop/common/branches/HDFS-2802/hadoop-hdfs-project/hadoop-hdfs/src/main/java/org/apache/hadoop/hdfs/server/namenode/FSNamesystem.java?rev=1422748&r1=1422747&r2=1422748&view=diff
==============================================================================
--- hadoop/common/branches/HDFS-2802/hadoop-hdfs-project/hadoop-hdfs/src/main/java/org/apache/hadoop/hdfs/server/namenode/FSNamesystem.java (original)
+++ hadoop/common/branches/HDFS-2802/hadoop-hdfs-project/hadoop-hdfs/src/main/java/org/apache/hadoop/hdfs/server/namenode/FSNamesystem.java Mon Dec 17 03:40:27 2012
@@ -1952,7 +1952,7 @@ public class FSNamesystem implements Nam
leaseHolder,
clientMachine,
clientNode);
- dir.replaceNode(src, file, cons);
+ dir.replaceINodeFile(src, file, cons);
leaseManager.addLease(cons.getClientName(), src);
LocatedBlock ret = blockManager.convertLastBlockToUnderConstruction(cons);
@@ -3261,8 +3261,8 @@ public class FSNamesystem implements Nam
// The file is no longer pending.
// Create permanent INode, update blocks
- INodeFile newFile = pendingFile.convertToInodeFile();
- dir.replaceNode(src, pendingFile, newFile);
+ INodeFile newFile = pendingFile.convertToInodeFile(now());
+ dir.replaceINodeFile(src, pendingFile, newFile);
// close file and persist block allocations for this file
dir.closeFile(src, newFile);
Modified: hadoop/common/branches/HDFS-2802/hadoop-hdfs-project/hadoop-hdfs/src/main/java/org/apache/hadoop/hdfs/server/namenode/INode.java
URL: http://svn.apache.org/viewvc/hadoop/common/branches/HDFS-2802/hadoop-hdfs-project/hadoop-hdfs/src/main/java/org/apache/hadoop/hdfs/server/namenode/INode.java?rev=1422748&r1=1422747&r2=1422748&view=diff
==============================================================================
--- hadoop/common/branches/HDFS-2802/hadoop-hdfs-project/hadoop-hdfs/src/main/java/org/apache/hadoop/hdfs/server/namenode/INode.java (original)
+++ hadoop/common/branches/HDFS-2802/hadoop-hdfs-project/hadoop-hdfs/src/main/java/org/apache/hadoop/hdfs/server/namenode/INode.java Mon Dec 17 03:40:27 2012
@@ -24,6 +24,8 @@ import java.util.HashMap;
import java.util.Iterator;
import java.util.Map;
+import org.apache.commons.logging.Log;
+import org.apache.commons.logging.LogFactory;
import org.apache.hadoop.classification.InterfaceAudience;
import org.apache.hadoop.fs.ContentSummary;
import org.apache.hadoop.fs.Path;
@@ -46,9 +48,31 @@ import com.google.common.primitives.Sign
*/
@InterfaceAudience.Private
public abstract class INode implements Comparable<byte[]> {
+ public static final Log LOG = LogFactory.getLog(INode.class);
+
static final ReadOnlyList<INode> EMPTY_READ_ONLY_LIST
= ReadOnlyList.Util.emptyList();
+ /** A pair of objects. */
+ public static class Pair<L, R> {
+ public final L left;
+ public final R right;
+
+ public Pair(L left, R right) {
+ this.left = left;
+ this.right = right;
+ }
+ }
+
+ /** A triple of objects. */
+ public static class Triple<L, M, R> extends Pair<L, R> {
+ public final M middle;
+
+ public Triple(L left, M middle, R right) {
+ super(left, right);
+ this.middle = middle;
+ }
+ }
/** Wrapper of two counters for namespace consumed and diskspace consumed. */
static class DirCounts {
@@ -154,6 +178,17 @@ public abstract class INode implements C
}
/**
+ * Create a copy of this inode for snapshot.
+ *
+ * @return a pair of inodes, where the left inode is the current inode and
+ * the right inode is the snapshot copy. The current inode usually is
+ * the same object of this inode. However, in some cases, the inode
+ * may be replaced with a new inode for maintaining snapshot data.
+ * Then, the current inode is the new inode.
+ */
+ public abstract Pair<? extends INode, ? extends INode> createSnapshotCopy();
+
+ /**
* Check whether this is the root inode.
*/
boolean isRoot() {
@@ -246,11 +281,11 @@ public abstract class INode implements C
* Get the quota set for this inode
* @return the quota if it is set; -1 otherwise
*/
- long getNsQuota() {
+ public long getNsQuota() {
return -1;
}
- long getDsQuota() {
+ public long getDsQuota() {
return -1;
}
@@ -307,9 +342,24 @@ public abstract class INode implements C
@Override
public String toString() {
- return "\"" + getFullPathName() + "\":"
- + getUserName() + ":" + getGroupName() + ":"
- + (isDirectory()? "d": "-") + getFsPermission();
+ return name == null? "<name==null>": getFullPathName();
+ }
+
+ @VisibleForTesting
+ public String getObjectString() {
+ final String s = super.toString();
+ return s.substring(s.lastIndexOf(getClass().getSimpleName()));
+ }
+
+ @VisibleForTesting
+ public String toStringWithObjectType() {
+ return toString() + "(" + getObjectString() + ")";
+ }
+
+ @VisibleForTesting
+ public String toDetailString() {
+ return toStringWithObjectType()
+ + ", parent=" + (parent == null? null: parent.toStringWithObjectType());
}
/**
@@ -333,20 +383,22 @@ public abstract class INode implements C
return this.modificationTime;
}
- /**
- * Set last modification time of inode.
- */
- public void setModificationTime(long modtime) {
+ /** Update modification time if it is larger than the current value. */
+ public void updateModificationTime(long modtime) {
assert isDirectory();
if (this.modificationTime <= modtime) {
this.modificationTime = modtime;
}
}
+ void cloneModificationTime(INode that) {
+ this.modificationTime = that.modificationTime;
+ }
+
/**
* Always set the last modification time of inode.
*/
- void setModificationTimeForce(long modtime) {
+ void setModificationTime(long modtime) {
this.modificationTime = modtime;
}
@@ -525,9 +577,9 @@ public abstract class INode implements C
out.print(" ");
out.print(getLocalName());
out.print(" (");
- final String s = super.toString();
- out.print(s.substring(s.lastIndexOf(getClass().getSimpleName())));
- out.println(")");
+ out.print(getObjectString());
+ out.print("), parent=");
+ out.println(parent == null? null: parent.getLocalName());
}
/**
Modified: hadoop/common/branches/HDFS-2802/hadoop-hdfs-project/hadoop-hdfs/src/main/java/org/apache/hadoop/hdfs/server/namenode/INodeDirectory.java
URL: http://svn.apache.org/viewvc/hadoop/common/branches/HDFS-2802/hadoop-hdfs-project/hadoop-hdfs/src/main/java/org/apache/hadoop/hdfs/server/namenode/INodeDirectory.java?rev=1422748&r1=1422747&r2=1422748&view=diff
==============================================================================
--- hadoop/common/branches/HDFS-2802/hadoop-hdfs-project/hadoop-hdfs/src/main/java/org/apache/hadoop/hdfs/server/namenode/INodeDirectory.java (original)
+++ hadoop/common/branches/HDFS-2802/hadoop-hdfs-project/hadoop-hdfs/src/main/java/org/apache/hadoop/hdfs/server/namenode/INodeDirectory.java Mon Dec 17 03:40:27 2012
@@ -32,11 +32,13 @@ import org.apache.hadoop.hdfs.protocol.H
import org.apache.hadoop.hdfs.protocol.UnresolvedPathException;
import org.apache.hadoop.hdfs.server.namenode.snapshot.INodeDirectorySnapshottable;
import org.apache.hadoop.hdfs.server.namenode.snapshot.INodeDirectoryWithSnapshot;
+import org.apache.hadoop.hdfs.server.namenode.snapshot.INodeFileWithLink;
import org.apache.hadoop.hdfs.server.namenode.snapshot.Snapshot;
import org.apache.hadoop.hdfs.server.namenode.snapshot.SnapshotAccessControlException;
import org.apache.hadoop.hdfs.util.ReadOnlyList;
import com.google.common.annotations.VisibleForTesting;
+import com.google.common.base.Preconditions;
/**
* Directory INode class.
@@ -88,6 +90,12 @@ public class INodeDirectory extends INod
}
}
}
+
+ @Override
+ public Pair<INodeDirectory, INodeDirectory> createSnapshotCopy() {
+ return new Pair<INodeDirectory, INodeDirectory>(this,
+ new INodeDirectory(this, false));
+ }
/** @return true unconditionally. */
@Override
@@ -106,13 +114,27 @@ public class INodeDirectory extends INod
}
}
- private int searchChildren(INode inode) {
- return Collections.binarySearch(children, inode.getLocalNameBytes());
+ private int searchChildren(byte[] name) {
+ return Collections.binarySearch(children, name);
+ }
+
+ protected int searchChildrenForExistingINode(byte[] name) {
+ assertChildrenNonNull();
+ final int i = searchChildren(name);
+ if (i < 0) {
+ throw new AssertionError("Child not found: name="
+ + DFSUtil.bytes2String(name));
+ }
+ return i;
+ }
+
+ protected INode getExistingChild(int i) {
+ return children.get(i);
}
INode removeChild(INode node) {
assertChildrenNonNull();
- final int i = searchChildren(node);
+ final int i = searchChildren(node.getLocalNameBytes());
return i >= 0? children.remove(i): null;
}
@@ -123,7 +145,7 @@ public class INodeDirectory extends INod
void replaceChild(INode newChild) {
assertChildrenNonNull();
- final int low = searchChildren(newChild);
+ final int low = searchChildren(newChild.getLocalNameBytes());
if (low>=0) { // an old child exists so replace by the newChild
children.get(low).parent = null;
children.set(low, newChild);
@@ -132,6 +154,18 @@ public class INodeDirectory extends INod
}
}
+ /** Replace a child {@link INodeFile} with an {@link INodeFileWithLink}. */
+ INodeFileWithLink replaceINodeFile(final INodeFile child) {
+ assertChildrenNonNull();
+ Preconditions.checkArgument(!(child instanceof INodeFileWithLink),
+ "Child file is already an INodeFileWithLink, child=" + child);
+
+ final INodeFileWithLink newChild = new INodeFileWithLink(child);
+ final int i = searchChildrenForExistingINode(newChild.getLocalNameBytes());
+ children.set(i, newChild);
+ return newChild;
+ }
+
private INode getChild(byte[] name, Snapshot snapshot) {
final ReadOnlyList<INode> c = getChildrenList(snapshot);
final int i = ReadOnlyList.Util.binarySearch(c, name);
@@ -236,7 +270,7 @@ public class INodeDirectory extends INod
"Incorrect name " + getLocalName() + " expected "
+ (components[0] == null? null: DFSUtil.bytes2String(components[0]));
- INodesInPath existing = new INodesInPath(numOfINodes);
+ INodesInPath existing = new INodesInPath(components, numOfINodes);
INode curNode = this;
int count = 0;
int index = numOfINodes - components.length;
@@ -373,7 +407,7 @@ public class INodeDirectory extends INod
if (children == null) {
children = new ArrayList<INode>(DEFAULT_FILES_PER_DIRECTORY);
}
- final int low = searchChildren(node);
+ final int low = searchChildren(node.getLocalNameBytes());
if (low >= 0) {
return false;
}
@@ -381,7 +415,7 @@ public class INodeDirectory extends INod
children.add(-low - 1, node);
// update modification time of the parent directory
if (setModTime)
- setModificationTime(node.getModificationTime());
+ updateModificationTime(node.getModificationTime());
if (node.getGroupName() == null) {
node.setGroup(getGroupName());
}
@@ -408,20 +442,12 @@ public class INodeDirectory extends INod
}
newNode.setLocalName(pathComponents[pathComponents.length - 1]);
// insert into the parent children list
- INodeDirectory parent = getParent(pathComponents);
+ final INodesInPath iip = getExistingPathINodes(pathComponents, 2, false);
+ final INodeDirectory parent = INodeDirectory.valueOf(iip.getINode(0),
+ pathComponents);
return parent.addChild(newNode, true);
}
- INodeDirectory getParent(byte[][] pathComponents
- ) throws FileNotFoundException, PathIsNotDirectoryException,
- UnresolvedLinkException {
- if (pathComponents.length < 2) // add root
- return null;
- // Gets the parent INode
- INodesInPath inodes = getExistingPathINodes(pathComponents, 2, false);
- return INodeDirectory.valueOf(inodes.inodes[0], pathComponents);
- }
-
@Override
DirCounts spaceConsumedInTree(DirCounts counts) {
counts.nsCount += 1;
@@ -465,12 +491,14 @@ public class INodeDirectory extends INod
}
/**
+ * @param snapshot
+ * if it is not null, get the result from the given snapshot;
+ * otherwise, get the result from the current directory.
* @return the current children list if the specified snapshot is null;
* otherwise, return the children list corresponding to the snapshot.
* Note that the returned list is never null.
*/
public ReadOnlyList<INode> getChildrenList(final Snapshot snapshot) {
- //TODO: use snapshot to select children list
return children == null ? EMPTY_READ_ONLY_LIST
: ReadOnlyList.Util.asReadOnlyList(children);
}
@@ -499,6 +527,7 @@ public class INodeDirectory extends INod
* Contains INodes information resolved from a given path.
*/
static class INodesInPath {
+ private final byte[][] path;
/**
* Array with the specified number of INodes resolved for a given path.
*/
@@ -528,7 +557,8 @@ public class INodeDirectory extends INod
*/
private Snapshot snapshot = null;
- INodesInPath(int number) {
+ private INodesInPath(byte[][] path, int number) {
+ this.path = path;
assert (number >= 0);
inodes = new INode[number];
capacity = number;
@@ -578,10 +608,15 @@ public class INodeDirectory extends INod
}
/** @return the i-th inode. */
- INode getINode(int i) {
+ public INode getINode(int i) {
return inodes[i];
}
+ /** @return the last inode. */
+ public INode getLastINode() {
+ return inodes[inodes.length - 1];
+ }
+
/**
* @return index of the {@link INodeDirectoryWithSnapshot} in
* {@link #inodes} for snapshot path, else -1.
@@ -621,8 +656,17 @@ public class INodeDirectory extends INod
@Override
public String toString() {
+ return toString(true);
+ }
+
+ private String toString(boolean vaildateObject) {
+ if (vaildateObject) {
+ vaildate();
+ }
+
final StringBuilder b = new StringBuilder(getClass().getSimpleName())
- .append(":\n inodes = ");
+ .append(": path = ").append(DFSUtil.byteArray2PathString(path))
+ .append("\n inodes = ");
if (inodes == null) {
b.append("null");
} else if (inodes.length == 0) {
@@ -641,6 +685,31 @@ public class INodeDirectory extends INod
.append("\n snapshot = ").append(snapshot);
return b.toString();
}
+
+ void vaildate() {
+ // check parent up to snapshotRootIndex or numNonNull
+ final int n = snapshotRootIndex >= 0? snapshotRootIndex + 1: numNonNull;
+ int i = 0;
+ if (inodes[i] != null) {
+ for(i++; i < n && inodes[i] != null; i++) {
+ final INodeDirectory parent_i = inodes[i].getParent();
+ final INodeDirectory parent_i_1 = inodes[i-1].getParent();
+ if (parent_i != inodes[i-1] &&
+ (parent_i_1 == null || !parent_i_1.isSnapshottable()
+ || parent_i != parent_i_1)) {
+ throw new AssertionError(
+ "inodes[" + i + "].getParent() != inodes[" + (i-1)
+ + "]\n inodes[" + i + "]=" + inodes[i].toDetailString()
+ + "\n inodes[" + (i-1) + "]=" + inodes[i-1].toDetailString()
+ + "\n this=" + toString(false));
+ }
+ }
+ }
+ if (i != n) {
+ throw new AssertionError("i = " + i + " != " + n
+ + ", this=" + toString(false));
+ }
+ }
}
/*
Modified: hadoop/common/branches/HDFS-2802/hadoop-hdfs-project/hadoop-hdfs/src/main/java/org/apache/hadoop/hdfs/server/namenode/INodeDirectoryWithQuota.java
URL: http://svn.apache.org/viewvc/hadoop/common/branches/HDFS-2802/hadoop-hdfs-project/hadoop-hdfs/src/main/java/org/apache/hadoop/hdfs/server/namenode/INodeDirectoryWithQuota.java?rev=1422748&r1=1422747&r2=1422748&view=diff
==============================================================================
--- hadoop/common/branches/HDFS-2802/hadoop-hdfs-project/hadoop-hdfs/src/main/java/org/apache/hadoop/hdfs/server/namenode/INodeDirectoryWithQuota.java (original)
+++ hadoop/common/branches/HDFS-2802/hadoop-hdfs-project/hadoop-hdfs/src/main/java/org/apache/hadoop/hdfs/server/namenode/INodeDirectoryWithQuota.java Mon Dec 17 03:40:27 2012
@@ -42,9 +42,9 @@ public class INodeDirectoryWithQuota ext
* @param dsQuota Diskspace quota to be assigned to this indoe
* @param other The other inode from which all other properties are copied
*/
- protected INodeDirectoryWithQuota(long nsQuota, long dsQuota,
- INodeDirectory other) {
- super(other, true);
+ protected INodeDirectoryWithQuota(INodeDirectory other, boolean adopt,
+ long nsQuota, long dsQuota) {
+ super(other, adopt);
INode.DirCounts counts = new INode.DirCounts();
other.spaceConsumedInTree(counts);
this.nsCount = counts.getNsCount();
Modified: hadoop/common/branches/HDFS-2802/hadoop-hdfs-project/hadoop-hdfs/src/main/java/org/apache/hadoop/hdfs/server/namenode/INodeFile.java
URL: http://svn.apache.org/viewvc/hadoop/common/branches/HDFS-2802/hadoop-hdfs-project/hadoop-hdfs/src/main/java/org/apache/hadoop/hdfs/server/namenode/INodeFile.java?rev=1422748&r1=1422747&r2=1422748&view=diff
==============================================================================
--- hadoop/common/branches/HDFS-2802/hadoop-hdfs-project/hadoop-hdfs/src/main/java/org/apache/hadoop/hdfs/server/namenode/INodeFile.java (original)
+++ hadoop/common/branches/HDFS-2802/hadoop-hdfs-project/hadoop-hdfs/src/main/java/org/apache/hadoop/hdfs/server/namenode/INodeFile.java Mon Dec 17 03:40:27 2012
@@ -28,6 +28,8 @@ import org.apache.hadoop.hdfs.protocol.B
import org.apache.hadoop.hdfs.server.blockmanagement.BlockCollection;
import org.apache.hadoop.hdfs.server.blockmanagement.BlockInfo;
import org.apache.hadoop.hdfs.server.blockmanagement.BlockInfoUnderConstruction;
+import org.apache.hadoop.hdfs.server.namenode.snapshot.INodeFileSnapshot;
+import org.apache.hadoop.hdfs.server.namenode.snapshot.INodeFileWithLink;
/** I-node for closed file. */
@InterfaceAudience.Private
@@ -89,16 +91,27 @@ public class INodeFile extends INode imp
INodeFile(PermissionStatus permissions, BlockInfo[] blklist,
short replication, long modificationTime,
long atime, long preferredBlockSize) {
- super(permissions, modificationTime, atime);
+ this(null, permissions, modificationTime, atime, blklist, replication,
+ preferredBlockSize);
+ }
+
+ INodeFile(byte[] name, PermissionStatus permissions, long mtime, long atime,
+ BlockInfo[] blklist, short replication, long preferredBlockSize) {
+ super(name, permissions, null, mtime, atime);
header = HeaderFormat.combineReplication(header, replication);
header = HeaderFormat.combinePreferredBlockSize(header, preferredBlockSize);
this.blocks = blklist;
}
- protected INodeFile(INodeFile f) {
- this(f.getPermissionStatus(), f.getBlocks(), f.getFileReplication(),
- f.getModificationTime(), f.getAccessTime(), f.getPreferredBlockSize());
- this.setLocalName(f.getLocalNameBytes());
+ protected INodeFile(INodeFile that) {
+ super(that);
+ this.header = that.header;
+ this.blocks = that.blocks;
+ }
+
+ @Override
+ public Pair<INodeFileWithLink, INodeFileSnapshot> createSnapshotCopy() {
+ return parent.replaceINodeFile(this).createSnapshotCopy();
}
/** @return true unconditionally. */
Modified: hadoop/common/branches/HDFS-2802/hadoop-hdfs-project/hadoop-hdfs/src/main/java/org/apache/hadoop/hdfs/server/namenode/INodeFileUnderConstruction.java
URL: http://svn.apache.org/viewvc/hadoop/common/branches/HDFS-2802/hadoop-hdfs-project/hadoop-hdfs/src/main/java/org/apache/hadoop/hdfs/server/namenode/INodeFileUnderConstruction.java?rev=1422748&r1=1422747&r2=1422748&view=diff
==============================================================================
--- hadoop/common/branches/HDFS-2802/hadoop-hdfs-project/hadoop-hdfs/src/main/java/org/apache/hadoop/hdfs/server/namenode/INodeFileUnderConstruction.java (original)
+++ hadoop/common/branches/HDFS-2802/hadoop-hdfs-project/hadoop-hdfs/src/main/java/org/apache/hadoop/hdfs/server/namenode/INodeFileUnderConstruction.java Mon Dec 17 03:40:27 2012
@@ -72,9 +72,8 @@ public class INodeFileUnderConstruction
String clientName,
String clientMachine,
DatanodeDescriptor clientNode) {
- super(perm, blocks, blockReplication, modificationTime, modificationTime,
- preferredBlockSize);
- setLocalName(name);
+ super(name, perm, modificationTime, modificationTime,
+ blocks, blockReplication, preferredBlockSize);
this.clientName = clientName;
this.clientMachine = clientMachine;
this.clientNode = clientNode;
@@ -108,19 +107,14 @@ public class INodeFileUnderConstruction
// converts a INodeFileUnderConstruction into a INodeFile
// use the modification time as the access time
//
- INodeFile convertToInodeFile() {
+ INodeFile convertToInodeFile(long mtime) {
assert allBlocksComplete() : "Can't finalize inode " + this
+ " since it contains non-complete blocks! Blocks are "
+ Arrays.asList(getBlocks());
//TODO SNAPSHOT: may convert to INodeFileWithLink
- INodeFile obj = new INodeFile(getPermissionStatus(),
- getBlocks(),
- getFileReplication(),
- getModificationTime(),
- getModificationTime(),
- getPreferredBlockSize());
- return obj;
-
+ return new INodeFile(getLocalNameBytes(), getPermissionStatus(),
+ mtime, getModificationTime(),
+ getBlocks(), getFileReplication(), getPreferredBlockSize());
}
/**
Modified: hadoop/common/branches/HDFS-2802/hadoop-hdfs-project/hadoop-hdfs/src/main/java/org/apache/hadoop/hdfs/server/namenode/INodeSymlink.java
URL: http://svn.apache.org/viewvc/hadoop/common/branches/HDFS-2802/hadoop-hdfs-project/hadoop-hdfs/src/main/java/org/apache/hadoop/hdfs/server/namenode/INodeSymlink.java?rev=1422748&r1=1422747&r2=1422748&view=diff
==============================================================================
--- hadoop/common/branches/HDFS-2802/hadoop-hdfs-project/hadoop-hdfs/src/main/java/org/apache/hadoop/hdfs/server/namenode/INodeSymlink.java (original)
+++ hadoop/common/branches/HDFS-2802/hadoop-hdfs-project/hadoop-hdfs/src/main/java/org/apache/hadoop/hdfs/server/namenode/INodeSymlink.java Mon Dec 17 03:40:27 2012
@@ -43,6 +43,12 @@ public class INodeSymlink extends INode
}
@Override
+ public Pair<INodeSymlink, INodeSymlink> createSnapshotCopy() {
+ return new Pair<INodeSymlink, INodeSymlink>(this, new INodeSymlink(this));
+ }
+
+ /** @return true unconditionally. */
+ @Override
public boolean isSymlink() {
return true;
}
Modified: hadoop/common/branches/HDFS-2802/hadoop-hdfs-project/hadoop-hdfs/src/main/java/org/apache/hadoop/hdfs/server/namenode/snapshot/INodeDirectorySnapshottable.java
URL: http://svn.apache.org/viewvc/hadoop/common/branches/HDFS-2802/hadoop-hdfs-project/hadoop-hdfs/src/main/java/org/apache/hadoop/hdfs/server/namenode/snapshot/INodeDirectorySnapshottable.java?rev=1422748&r1=1422747&r2=1422748&view=diff
==============================================================================
--- hadoop/common/branches/HDFS-2802/hadoop-hdfs-project/hadoop-hdfs/src/main/java/org/apache/hadoop/hdfs/server/namenode/snapshot/INodeDirectorySnapshottable.java (original)
+++ hadoop/common/branches/HDFS-2802/hadoop-hdfs-project/hadoop-hdfs/src/main/java/org/apache/hadoop/hdfs/server/namenode/snapshot/INodeDirectorySnapshottable.java Mon Dec 17 03:40:27 2012
@@ -29,7 +29,6 @@ import org.apache.hadoop.classification.
import org.apache.hadoop.hdfs.DFSUtil;
import org.apache.hadoop.hdfs.server.namenode.INode;
import org.apache.hadoop.hdfs.server.namenode.INodeDirectory;
-import org.apache.hadoop.hdfs.server.namenode.INodeDirectoryWithQuota;
import org.apache.hadoop.util.Time;
import com.google.common.annotations.VisibleForTesting;
@@ -41,18 +40,10 @@ import com.google.common.annotations.Vis
* by the namesystem and FSDirectory locks.
*/
@InterfaceAudience.Private
-public class INodeDirectorySnapshottable extends INodeDirectoryWithQuota {
+public class INodeDirectorySnapshottable extends INodeDirectoryWithSnapshot {
static public INodeDirectorySnapshottable newInstance(
final INodeDirectory dir, final int snapshotQuota) {
- long nsq = -1L;
- long dsq = -1L;
-
- if (dir instanceof INodeDirectoryWithQuota) {
- final INodeDirectoryWithQuota q = (INodeDirectoryWithQuota)dir;
- nsq = q.getNsQuota();
- dsq = q.getDsQuota();
- }
- return new INodeDirectorySnapshottable(nsq, dsq, dir, snapshotQuota);
+ return new INodeDirectorySnapshottable(dir, snapshotQuota);
}
/** Cast INode to INodeDirectorySnapshottable. */
@@ -90,9 +81,9 @@ public class INodeDirectorySnapshottable
/** Number of snapshots allowed. */
private int snapshotQuota;
- private INodeDirectorySnapshottable(long nsQuota, long dsQuota,
- INodeDirectory dir, final int snapshotQuota) {
- super(nsQuota, dsQuota, dir);
+ private INodeDirectorySnapshottable(INodeDirectory dir,
+ final int snapshotQuota) {
+ super(dir, true);
setSnapshotQuota(snapshotQuota);
}
@@ -196,8 +187,8 @@ public class INodeDirectorySnapshottable
//set modification time
final long timestamp = Time.now();
- s.getRoot().setModificationTime(timestamp);
- setModificationTime(timestamp);
+ s.getRoot().updateModificationTime(timestamp);
+ updateModificationTime(timestamp);
return s;
}
Modified: hadoop/common/branches/HDFS-2802/hadoop-hdfs-project/hadoop-hdfs/src/main/java/org/apache/hadoop/hdfs/server/namenode/snapshot/INodeDirectoryWithSnapshot.java
URL: http://svn.apache.org/viewvc/hadoop/common/branches/HDFS-2802/hadoop-hdfs-project/hadoop-hdfs/src/main/java/org/apache/hadoop/hdfs/server/namenode/snapshot/INodeDirectoryWithSnapshot.java?rev=1422748&r1=1422747&r2=1422748&view=diff
==============================================================================
--- hadoop/common/branches/HDFS-2802/hadoop-hdfs-project/hadoop-hdfs/src/main/java/org/apache/hadoop/hdfs/server/namenode/snapshot/INodeDirectoryWithSnapshot.java (original)
+++ hadoop/common/branches/HDFS-2802/hadoop-hdfs-project/hadoop-hdfs/src/main/java/org/apache/hadoop/hdfs/server/namenode/snapshot/INodeDirectoryWithSnapshot.java Mon Dec 17 03:40:27 2012
@@ -23,9 +23,12 @@ import java.util.List;
import org.apache.hadoop.hdfs.server.namenode.INode;
import org.apache.hadoop.hdfs.server.namenode.INodeDirectory;
+import org.apache.hadoop.hdfs.server.namenode.INodeDirectoryWithQuota;
+
+import com.google.common.base.Preconditions;
/** The directory with snapshots. */
-public class INodeDirectoryWithSnapshot extends INodeDirectory {
+public class INodeDirectoryWithSnapshot extends INodeDirectoryWithQuota {
/**
* The difference between the current state and a previous snapshot
* of an INodeDirectory.
@@ -79,6 +82,13 @@ public class INodeDirectoryWithSnapshot
return inodes == null? -1: Collections.binarySearch(inodes, name);
}
+ private static void remove(final List<INode> inodes, final int i,
+ final INode expected) {
+ final INode removed = inodes.remove(-i - 1);
+ Preconditions.checkState(removed == expected,
+ "removed != expected=%s, removed=%s.", expected, removed);
+ }
+
/** c-list: inode(s) created in current. */
private List<INode> created;
/** d-list: inode(s) deleted from current. */
@@ -116,82 +126,126 @@ public class INodeDirectoryWithSnapshot
deleted.add(-i - 1, inode);
}
- /** Create an inode in current state. */
- void create(final INode inode) {
+ /**
+ * Create an inode in current state.
+ * @return the c-list insertion point for undo.
+ */
+ int create(final INode inode) {
final int c = search(created, inode);
insertCreated(inode, c);
+ return c;
}
- /** Delete an inode from current state. */
- void delete(final INode inode) {
+ void undoCreate(final INode inode, final int insertionPoint) {
+ remove(created, insertionPoint, inode);
+ }
+
+ /**
+ * Delete an inode from current state.
+ * @return a triple for undo.
+ */
+ Triple<Integer, INode, Integer> delete(final INode inode) {
final int c = search(created, inode);
+ INode previous = null;
+ Integer d = null;
if (c >= 0) {
// remove a newly created inode
- created.remove(c);
+ previous = created.remove(c);
} else {
// not in c-list, it must be in previous
- final int d = search(deleted, inode);
+ d = search(deleted, inode);
insertDeleted(inode, d);
}
+ return new Triple<Integer, INode, Integer>(c, previous, d);
+ }
+
+ void undoDelete(final INode inode,
+ final Triple<Integer, INode, Integer> undoInfo) {
+ final int c = undoInfo.left;
+ if (c >= 0) {
+ created.add(c, undoInfo.middle);
+ } else {
+ remove(deleted, undoInfo.right, inode);
+ }
}
- /** Modify an inode in current state. */
- void modify(final INode oldinode, final INode newinode) {
+ /**
+ * Modify an inode in current state.
+ * @return a triple for undo.
+ */
+ Triple<Integer, INode, Integer> modify(final INode oldinode, final INode newinode) {
if (!oldinode.equals(newinode)) {
throw new AssertionError("The names do not match: oldinode="
+ oldinode + ", newinode=" + newinode);
}
final int c = search(created, newinode);
+ INode previous = null;
+ Integer d = null;
if (c >= 0) {
// inode is already in c-list,
- created.set(c, newinode);
+ previous = created.set(c, newinode);
} else {
- final int d = search(deleted, oldinode);
+ d = search(deleted, oldinode);
if (d < 0) {
// neither in c-list nor d-list
insertCreated(newinode, c);
insertDeleted(oldinode, d);
}
}
+ return new Triple<Integer, INode, Integer>(c, previous, d);
+ }
+
+ void undoModify(final INode oldinode, final INode newinode,
+ final Triple<Integer, INode, Integer> undoInfo) {
+ final int c = undoInfo.left;
+ if (c >= 0) {
+ created.set(c, undoInfo.middle);
+ } else {
+ final int d = undoInfo.right;
+ if (d < 0) {
+ remove(created, c, newinode);
+ remove(deleted, d, oldinode);
+ }
+ }
}
/**
- * Given an inode in current state, find the corresponding inode in previous
- * snapshot. The inodes in current state and previous snapshot can possibly
- * be the same.
- *
- * @param inodeInCurrent The inode, possibly null, in current state.
- * @return null if the inode is not found in previous snapshot;
- * otherwise, return the corresponding inode in previous snapshot.
+ * Find an inode in the previous snapshot.
+ * @return null if the inode cannot be determined in the previous snapshot
+ * since no change is recorded and it should be determined in the
+ * current snapshot; otherwise, return an array with size one
+ * containing the inode in the previous snapshot. Note that the
+ * inode can possibly be null which means that the inode is not
+ * found in the previous snapshot.
*/
- INode accessPrevious(byte[] name, INode inodeInCurrent) {
- return accessPrevious(name, inodeInCurrent, created, deleted);
+ INode[] accessPrevious(byte[] name) {
+ return accessPrevious(name, created, deleted);
}
- private static INode accessPrevious(byte[] name, INode inodeInCurrent,
+ private static INode[] accessPrevious(byte[] name,
final List<INode> clist, final List<INode> dlist) {
final int d = search(dlist, name);
if (d >= 0) {
// the inode was in previous and was once deleted in current.
- return dlist.get(d);
+ return new INode[]{dlist.get(d)};
} else {
final int c = search(clist, name);
// When c >= 0, the inode in current is a newly created inode.
- return c >= 0? null: inodeInCurrent;
+ return c >= 0? new INode[]{null}: null;
}
}
/**
- * Given an inode in previous snapshot, find the corresponding inode in
- * current state. The inodes in current state and previous snapshot can
- * possibly be the same.
- *
- * @param inodeInPrevious The inode, possibly null, in previous snapshot.
- * @return null if the inode is not found in current state;
- * otherwise, return the corresponding inode in current state.
+ * Find an inode in the current snapshot.
+ * @return null if the inode cannot be determined in the current snapshot
+ * since no change is recorded and it should be determined in the
+ * previous snapshot; otherwise, return an array with size one
+ * containing the inode in the current snapshot. Note that the
+ * inode can possibly be null which means that the inode is not
+ * found in the current snapshot.
*/
- INode accessCurrent(byte[] name, INode inodeInPrevious) {
- return accessPrevious(name, inodeInPrevious, deleted, created);
+ INode[] accessCurrent(byte[] name) {
+ return accessPrevious(name, deleted, created);
}
/**
@@ -230,15 +284,13 @@ public class INodeDirectoryWithSnapshot
/** Convert the inode list to a compact string. */
static String toString(List<INode> inodes) {
- if (inodes == null) {
- return null;
- } else if (inodes.isEmpty()) {
- return "[]";
+ if (inodes == null || inodes.isEmpty()) {
+ return "<empty>";
}
final StringBuilder b = new StringBuilder("[")
- .append(inodes.get(0).getLocalName());
+ .append(inodes.get(0));
for(int i = 1; i < inodes.size(); i++) {
- b.append(", ").append(inodes.get(i).getLocalName());
+ b.append(", ").append(inodes.get(i));
}
return b.append("]").toString();
}
@@ -246,13 +298,12 @@ public class INodeDirectoryWithSnapshot
@Override
public String toString() {
return getClass().getSimpleName()
- + ":\n created=" + toString(created)
- + "\n deleted=" + toString(deleted);
+ + "{created=" + toString(created)
+ + ", deleted=" + toString(deleted) + "}";
}
}
- INodeDirectoryWithSnapshot(String name, INodeDirectory dir) {
- super(name, dir.getPermissionStatus());
- parent = dir;
+ public INodeDirectoryWithSnapshot(INodeDirectory that, boolean adopt) {
+ super(that, adopt, that.getNsQuota(), that.getDsQuota());
}
}
Modified: hadoop/common/branches/HDFS-2802/hadoop-hdfs-project/hadoop-hdfs/src/main/java/org/apache/hadoop/hdfs/server/namenode/snapshot/INodeFileSnapshot.java
URL: http://svn.apache.org/viewvc/hadoop/common/branches/HDFS-2802/hadoop-hdfs-project/hadoop-hdfs/src/main/java/org/apache/hadoop/hdfs/server/namenode/snapshot/INodeFileSnapshot.java?rev=1422748&r1=1422747&r2=1422748&view=diff
==============================================================================
--- hadoop/common/branches/HDFS-2802/hadoop-hdfs-project/hadoop-hdfs/src/main/java/org/apache/hadoop/hdfs/server/namenode/snapshot/INodeFileSnapshot.java (original)
+++ hadoop/common/branches/HDFS-2802/hadoop-hdfs-project/hadoop-hdfs/src/main/java/org/apache/hadoop/hdfs/server/namenode/snapshot/INodeFileSnapshot.java Mon Dec 17 03:40:27 2012
@@ -18,7 +18,6 @@
package org.apache.hadoop.hdfs.server.namenode.snapshot;
import org.apache.hadoop.classification.InterfaceAudience;
-import org.apache.hadoop.hdfs.server.namenode.INodeFile;
/**
* INode representing a snapshot of a file.
@@ -28,9 +27,10 @@ public class INodeFileSnapshot extends I
/** The file size at snapshot creation time. */
final long size;
- public INodeFileSnapshot(INodeFile f, long size) {
+ INodeFileSnapshot(INodeFileWithLink f) {
super(f);
- this.size = size;
+ this.size = f.computeFileSize(true);
+ f.insert(this);
}
@Override
@@ -39,4 +39,4 @@ public class INodeFileSnapshot extends I
//since files in a snapshot are considered as closed.
return size;
}
-}
+}
\ No newline at end of file
Modified: hadoop/common/branches/HDFS-2802/hadoop-hdfs-project/hadoop-hdfs/src/main/java/org/apache/hadoop/hdfs/server/namenode/snapshot/INodeFileWithLink.java
URL: http://svn.apache.org/viewvc/hadoop/common/branches/HDFS-2802/hadoop-hdfs-project/hadoop-hdfs/src/main/java/org/apache/hadoop/hdfs/server/namenode/snapshot/INodeFileWithLink.java?rev=1422748&r1=1422747&r2=1422748&view=diff
==============================================================================
--- hadoop/common/branches/HDFS-2802/hadoop-hdfs-project/hadoop-hdfs/src/main/java/org/apache/hadoop/hdfs/server/namenode/snapshot/INodeFileWithLink.java (original)
+++ hadoop/common/branches/HDFS-2802/hadoop-hdfs-project/hadoop-hdfs/src/main/java/org/apache/hadoop/hdfs/server/namenode/snapshot/INodeFileWithLink.java Mon Dec 17 03:40:27 2012
@@ -37,6 +37,12 @@ public class INodeFileWithLink extends I
next = this;
}
+ @Override
+ public Pair<INodeFileWithLink, INodeFileSnapshot> createSnapshotCopy() {
+ return new Pair<INodeFileWithLink, INodeFileSnapshot>(this,
+ new INodeFileSnapshot(this));
+ }
+
void setNext(INodeFileWithLink next) {
this.next = next;
}
Modified: hadoop/common/branches/HDFS-2802/hadoop-hdfs-project/hadoop-hdfs/src/main/java/org/apache/hadoop/hdfs/server/namenode/snapshot/Snapshot.java
URL: http://svn.apache.org/viewvc/hadoop/common/branches/HDFS-2802/hadoop-hdfs-project/hadoop-hdfs/src/main/java/org/apache/hadoop/hdfs/server/namenode/snapshot/Snapshot.java?rev=1422748&r1=1422747&r2=1422748&view=diff
==============================================================================
--- hadoop/common/branches/HDFS-2802/hadoop-hdfs-project/hadoop-hdfs/src/main/java/org/apache/hadoop/hdfs/server/namenode/snapshot/Snapshot.java (original)
+++ hadoop/common/branches/HDFS-2802/hadoop-hdfs-project/hadoop-hdfs/src/main/java/org/apache/hadoop/hdfs/server/namenode/snapshot/Snapshot.java Mon Dec 17 03:40:27 2012
@@ -44,7 +44,8 @@ public class Snapshot implements Compara
Snapshot(int id, String name, INodeDirectorySnapshottable dir) {
this.id = id;
- this.root = new INodeDirectoryWithSnapshot(name, dir);
+ this.root = new INodeDirectoryWithSnapshot(dir, false);
+ this.root.setLocalName(name);
}
/** @return the root directory of the snapshot. */
Modified: hadoop/common/branches/HDFS-2802/hadoop-hdfs-project/hadoop-hdfs/src/main/java/org/apache/hadoop/hdfs/server/namenode/snapshot/SnapshotManager.java
URL: http://svn.apache.org/viewvc/hadoop/common/branches/HDFS-2802/hadoop-hdfs-project/hadoop-hdfs/src/main/java/org/apache/hadoop/hdfs/server/namenode/snapshot/SnapshotManager.java?rev=1422748&r1=1422747&r2=1422748&view=diff
==============================================================================
--- hadoop/common/branches/HDFS-2802/hadoop-hdfs-project/hadoop-hdfs/src/main/java/org/apache/hadoop/hdfs/server/namenode/snapshot/SnapshotManager.java (original)
+++ hadoop/common/branches/HDFS-2802/hadoop-hdfs-project/hadoop-hdfs/src/main/java/org/apache/hadoop/hdfs/server/namenode/snapshot/SnapshotManager.java Mon Dec 17 03:40:27 2012
@@ -210,9 +210,6 @@ public class SnapshotManager implements
*/
private INodeFileSnapshot processINodeFile(final INodeDirectory parent,
final INodeFile file) {
- final INodeFileSnapshot snapshot = new INodeFileSnapshot(
- file, file.computeFileSize(true));
-
final INodeFileWithLink srcWithLink;
//check source INode type
if (file instanceof INodeFileWithLink) {
@@ -228,6 +225,7 @@ public class SnapshotManager implements
}
//insert the snapshot to src's linked list.
+ final INodeFileSnapshot snapshot = new INodeFileSnapshot(srcWithLink);
srcWithLink.insert(snapshot);
return snapshot;
}
Modified: hadoop/common/branches/HDFS-2802/hadoop-hdfs-project/hadoop-hdfs/src/test/java/org/apache/hadoop/hdfs/server/namenode/snapshot/SnapshotTestHelper.java
URL: http://svn.apache.org/viewvc/hadoop/common/branches/HDFS-2802/hadoop-hdfs-project/hadoop-hdfs/src/test/java/org/apache/hadoop/hdfs/server/namenode/snapshot/SnapshotTestHelper.java?rev=1422748&r1=1422747&r2=1422748&view=diff
==============================================================================
--- hadoop/common/branches/HDFS-2802/hadoop-hdfs-project/hadoop-hdfs/src/test/java/org/apache/hadoop/hdfs/server/namenode/snapshot/SnapshotTestHelper.java (original)
+++ hadoop/common/branches/HDFS-2802/hadoop-hdfs-project/hadoop-hdfs/src/test/java/org/apache/hadoop/hdfs/server/namenode/snapshot/SnapshotTestHelper.java Mon Dec 17 03:40:27 2012
@@ -150,6 +150,7 @@ public class SnapshotTestHelper {
list.add(node);
}
+ int id = 0;
/**
* Recursively generate the tree based on the height.
*
@@ -162,9 +163,9 @@ public class SnapshotTestHelper {
return;
}
parent.leftChild = new Node(new Path(parent.nodePath,
- "leftChild"), height - level, parent, fs);
+ "left" + ++id), height - level, parent, fs);
parent.rightChild = new Node(new Path(parent.nodePath,
- "rightChild"), height - level, parent, fs);
+ "right" + ++id), height - level, parent, fs);
addDirNode(parent.leftChild, parent.leftChild.level);
addDirNode(parent.rightChild, parent.rightChild.level);
genChildren(parent.leftChild, level - 1);
@@ -254,11 +255,11 @@ public class SnapshotTestHelper {
* Create files and add them in the fileList. Initially the last element
* in the fileList is set to null (where we start file creation).
*/
- void initFileList(long fileLen, short replication, long seed, int numFiles)
+ void initFileList(String namePrefix, long fileLen, short replication, long seed, int numFiles)
throws Exception {
fileList = new ArrayList<Path>(numFiles);
for (int i = 0; i < numFiles; i++) {
- Path file = new Path(nodePath, "file" + i);
+ Path file = new Path(nodePath, namePrefix + "-f" + i);
fileList.add(file);
if (i < numFiles - 1) {
DFSTestUtil.createFile(fs, file, fileLen, replication, seed);
Modified: hadoop/common/branches/HDFS-2802/hadoop-hdfs-project/hadoop-hdfs/src/test/java/org/apache/hadoop/hdfs/server/namenode/snapshot/TestINodeDirectoryWithSnapshot.java
URL: http://svn.apache.org/viewvc/hadoop/common/branches/HDFS-2802/hadoop-hdfs-project/hadoop-hdfs/src/test/java/org/apache/hadoop/hdfs/server/namenode/snapshot/TestINodeDirectoryWithSnapshot.java?rev=1422748&r1=1422747&r2=1422748&view=diff
==============================================================================
--- hadoop/common/branches/HDFS-2802/hadoop-hdfs-project/hadoop-hdfs/src/test/java/org/apache/hadoop/hdfs/server/namenode/snapshot/TestINodeDirectoryWithSnapshot.java (original)
+++ hadoop/common/branches/HDFS-2802/hadoop-hdfs-project/hadoop-hdfs/src/test/java/org/apache/hadoop/hdfs/server/namenode/snapshot/TestINodeDirectoryWithSnapshot.java Mon Dec 17 03:40:27 2012
@@ -24,6 +24,7 @@ import java.util.Random;
import org.apache.hadoop.fs.permission.FsPermission;
import org.apache.hadoop.fs.permission.PermissionStatus;
import org.apache.hadoop.hdfs.server.namenode.INode;
+import org.apache.hadoop.hdfs.server.namenode.INode.Triple;
import org.apache.hadoop.hdfs.server.namenode.INodeDirectory;
import org.apache.hadoop.hdfs.server.namenode.snapshot.INodeDirectoryWithSnapshot.Diff;
import org.junit.Assert;
@@ -33,7 +34,8 @@ import org.junit.Test;
* Test {@link INodeDirectoryWithSnapshot}, especially, {@link Diff}.
*/
public class TestINodeDirectoryWithSnapshot {
- private static Random RANDOM = new Random();
+ private static final Random RANDOM = new Random();
+ private static final int UNDO_TEST_P = 10;
private static final PermissionStatus PERM = PermissionStatus.createImmutable(
"user", "group", FsPermission.createImmutable((short)0));
@@ -139,10 +141,14 @@ public class TestINodeDirectoryWithSnaps
for(int m = 0; m < n; m++) {
final INode inode = newINode(m, width);
{// test accessPrevious
- final int i = Diff.search(current, inode);
- final INode inodeInCurrent = i < 0? null: current.get(i);
- final INode computed = diff.accessPrevious(
- inode.getLocalNameBytes(), inodeInCurrent);
+ final INode[] array = diff.accessPrevious(inode.getLocalNameBytes());
+ final INode computed;
+ if (array != null) {
+ computed = array[0];
+ } else {
+ final int i = Diff.search(current, inode);
+ computed = i < 0? null: current.get(i);
+ }
final int j = Diff.search(previous, inode);
final INode expected = j < 0? null: previous.get(j);
@@ -151,10 +157,14 @@ public class TestINodeDirectoryWithSnaps
}
{// test accessCurrent
- final int i = Diff.search(previous, inode);
- final INode inodeInPrevious = i < 0? null: previous.get(i);
- final INode computed = diff.accessCurrent(
- inode.getLocalNameBytes(), inodeInPrevious);
+ final INode[] array = diff.accessCurrent(inode.getLocalNameBytes());
+ final INode computed;
+ if (array != null) {
+ computed = array[0];
+ } else {
+ final int i = Diff.search(previous, inode);
+ computed = i < 0? null: previous.get(i);
+ }
final int j = Diff.search(current, inode);
final INode expected = j < 0? null: current.get(j);
@@ -182,6 +192,10 @@ public class TestINodeDirectoryWithSnaps
return true;
}
+ static String toString(Diff diff) {
+ return diff.toString();
+ }
+
static String toString(INode inode) {
return inode == null? null
: inode.getLocalName() + ":" + inode.getModificationTime();
@@ -202,7 +216,24 @@ public class TestINodeDirectoryWithSnaps
Assert.assertTrue(i < 0);
current.add(-i - 1, inode);
if (diff != null) {
- diff.create(inode);
+ //test undo with 1/UNDO_TEST_P probability
+ final boolean testUndo = RANDOM.nextInt(UNDO_TEST_P) == 0;
+ String before = null;
+ if (testUndo) {
+ before = toString(diff);
+ }
+
+ final int undoInfo = diff.create(inode);
+
+ if (testUndo) {
+ final String after = toString(diff);
+ //undo
+ diff.undoCreate(inode, undoInfo);
+ assertDiff(before, diff);
+ //re-do
+ diff.create(inode);
+ assertDiff(after, diff);
+ }
}
}
@@ -212,7 +243,24 @@ public class TestINodeDirectoryWithSnaps
i >= 0);
current.remove(i);
if (diff != null) {
- diff.delete(inode);
+ //test undo with 1/UNDO_TEST_P probability
+ final boolean testUndo = RANDOM.nextInt(UNDO_TEST_P) == 0;
+ String before = null;
+ if (testUndo) {
+ before = toString(diff);
+ }
+
+ final Triple<Integer, INode, Integer> undoInfo = diff.delete(inode);
+
+ if (testUndo) {
+ final String after = toString(diff);
+ //undo
+ diff.undoDelete(inode, undoInfo);
+ assertDiff(before, diff);
+ //re-do
+ diff.delete(inode);
+ assertDiff(after, diff);
+ }
}
}
@@ -220,14 +268,35 @@ public class TestINodeDirectoryWithSnaps
final int i = Diff.search(current, inode);
Assert.assertTrue(i >= 0);
final INodeDirectory oldinode = (INodeDirectory)current.get(i);
- final INodeDirectory newinode = new INodeDirectory(oldinode, true);
- newinode.setModificationTime(oldinode.getModificationTime() + 1);
+ final INodeDirectory newinode = oldinode.createSnapshotCopy().right;
+ newinode.updateModificationTime(oldinode.getModificationTime() + 1);
current.set(i, newinode);
if (diff != null) {
- diff.modify(oldinode, newinode);
+ //test undo with 1/UNDO_TEST_P probability
+ final boolean testUndo = RANDOM.nextInt(UNDO_TEST_P) == 0;
+ String before = null;
+ if (testUndo) {
+ before = toString(diff);
+ }
+
+ final Triple<Integer, INode, Integer> undoInfo = diff.modify(oldinode, newinode);
+
+ if (testUndo) {
+ final String after = toString(diff);
+ //undo
+ diff.undoModify(oldinode, newinode, undoInfo);
+ assertDiff(before, diff);
+ //re-do
+ diff.modify(oldinode, newinode);
+ assertDiff(after, diff);
+ }
}
}
+
+ static void assertDiff(String s, Diff diff) {
+ Assert.assertEquals(s, toString(diff));
+ }
/**
* Test {@link Snapshot#ID_COMPARATOR}.
Modified: hadoop/common/branches/HDFS-2802/hadoop-hdfs-project/hadoop-hdfs/src/test/java/org/apache/hadoop/hdfs/server/namenode/snapshot/TestSnapshot.java
URL: http://svn.apache.org/viewvc/hadoop/common/branches/HDFS-2802/hadoop-hdfs-project/hadoop-hdfs/src/test/java/org/apache/hadoop/hdfs/server/namenode/snapshot/TestSnapshot.java?rev=1422748&r1=1422747&r2=1422748&view=diff
==============================================================================
--- hadoop/common/branches/HDFS-2802/hadoop-hdfs-project/hadoop-hdfs/src/test/java/org/apache/hadoop/hdfs/server/namenode/snapshot/TestSnapshot.java (original)
+++ hadoop/common/branches/HDFS-2802/hadoop-hdfs-project/hadoop-hdfs/src/test/java/org/apache/hadoop/hdfs/server/namenode/snapshot/TestSnapshot.java Mon Dec 17 03:40:27 2012
@@ -61,7 +61,7 @@ public class TestSnapshot {
protected Configuration conf;
protected MiniDFSCluster cluster;
- protected FSNamesystem fsn;
+ protected static FSNamesystem fsn;
protected DistributedFileSystem hdfs;
private static Random random = new Random(Time.now());
@@ -205,7 +205,7 @@ public class TestSnapshot {
for (TestDirectoryTree.Node node : nodes) {
// If the node does not have files in it, create files
if (node.fileList == null) {
- node.initFileList(BLOCKSIZE, REPLICATION, seed, 6);
+ node.initFileList(node.nodePath.getName(), BLOCKSIZE, REPLICATION, seed, 6);
}
//
@@ -250,7 +250,8 @@ public class TestSnapshot {
mList.add(create);
mList.add(delete);
- mList.add(append);
+ // TODO: fix append for snapshots
+// mList.add(append);
mList.add(chmod);
mList.add(chown);
mList.add(replication);
@@ -284,10 +285,10 @@ public class TestSnapshot {
* Generate a random snapshot name.
* @return The snapshot name
*/
- private String genSnapshotName() {
- return "s" + Math.abs(random.nextLong());
+ static String genSnapshotName() {
+ return String.format("s-%X", random.nextInt());
}
-
+
/**
* Base class to present changes applied to current file/dir. A modification
* can be file creation, deletion, or other modifications such as appending on
@@ -496,6 +497,8 @@ public class TestSnapshot {
@Override
void modify() throws Exception {
+ System.out.println("BEFORE create " + file + "\n"
+ + fsn.getFSDirectory().getINode("/").dumpTreeRecursively());
DFSTestUtil.createFile(fs, file, fileLen, fileLen, BLOCKSIZE,
REPLICATION, seed);
}
@@ -506,11 +509,12 @@ public class TestSnapshot {
Path snapshotFile = SnapshotTestHelper.getSnapshotFile(fs,
snapshotRoot, file);
if (snapshotFile != null) {
- boolean currentSnapshotFileExist = fs.exists(snapshotFile);
- boolean originalSnapshotFileExist =
- fileStatusMap.get(snapshotFile) != null;
- assertEquals(currentSnapshotFileExist, originalSnapshotFileExist);
- if (currentSnapshotFileExist) {
+ boolean computed = fs.exists(snapshotFile);
+ boolean expected = fileStatusMap.get(snapshotFile) != null;
+ assertEquals("snapshotFile=" + snapshotFile + "\n"
+ + fsn.getFSDirectory().getINode("/").dumpTreeRecursively(),
+ expected, computed);
+ if (computed) {
FileStatus currentSnapshotStatus = fs.getFileStatus(snapshotFile);
FileStatus originalStatus = fileStatusMap.get(snapshotFile);
// We compare the string because it contains all the information,
@@ -615,7 +619,7 @@ public class TestSnapshot {
TestDirectoryTree.Node newChild = new TestDirectoryTree.Node(
changedPath, node.level + 1, node, node.fs);
// create file under the new non-snapshottable directory
- newChild.initFileList(BLOCKSIZE, REPLICATION, seed, 2);
+ newChild.initFileList(node.nodePath.getName(), BLOCKSIZE, REPLICATION, seed, 2);
node.nonSnapshotChildren.add(newChild);
} else {
// deletion