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HDFS-5715. Use Snapshot ID to indicate the corresponding Snapshot for a FileDiff/DirectoryDiff. Contributed by Jing Zhao. 

git-svn-id: https://svn.apache.org/repos/asf/hadoop/common/trunk@1556353 13f79535-47bb-0310-9956-ffa450edef68
This commit is contained in:
Jing Zhao 2014-01-07 20:52:48 +00:00
parent 332c2704d4
commit 70cff9e2f0
38 changed files with 796 additions and 695 deletions
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3
hadoop-hdfs-project/hadoop-hdfs/CHANGES.txt
View File

@ -242,6 +242,9 @@ Trunk (Unreleased)
HDFS-5651. Remove dfs.namenode.caching.enabled and improve CRM locking.
(cmccabe via wang)
HDFS-5715. Use Snapshot ID to indicate the corresponding Snapshot for a
FileDiff/DirectoryDiff. (jing9)
OPTIMIZATIONS
HDFS-5349. DNA_CACHE and DNA_UNCACHE should be by blockId only. (cmccabe)

4
hadoop-hdfs-project/hadoop-hdfs/src/main/java/org/apache/hadoop/hdfs/server/blockmanagement/CacheReplicationMonitor.java
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@ -49,6 +49,7 @@
import org.apache.hadoop.hdfs.server.namenode.INode;
import org.apache.hadoop.hdfs.server.namenode.INodeDirectory;
import org.apache.hadoop.hdfs.server.namenode.INodeFile;
import org.apache.hadoop.hdfs.server.namenode.snapshot.Snapshot;
import org.apache.hadoop.hdfs.util.ReadOnlyList;
import org.apache.hadoop.util.GSet;
import org.apache.hadoop.util.Time;
@ -339,7 +340,8 @@ private void rescanCacheDirectives() {
}
} else if (node.isDirectory()) {
INodeDirectory dir = node.asDirectory();
ReadOnlyList<INode> children = dir.getChildrenList(null);
ReadOnlyList<INode> children = dir
.getChildrenList(Snapshot.CURRENT_STATE_ID);
for (INode child : children) {
if (child.isFile()) {
rescanFile(directive, child.asFile());

5
hadoop-hdfs-project/hadoop-hdfs/src/main/java/org/apache/hadoop/hdfs/server/namenode/CacheManager.java
View File

@ -53,7 +53,6 @@
import org.apache.hadoop.fs.UnresolvedLinkException;
import org.apache.hadoop.fs.permission.FsAction;
import org.apache.hadoop.hdfs.DFSUtil;
import org.apache.hadoop.hdfs.protocol.Block;
import org.apache.hadoop.hdfs.protocol.CacheDirective;
import org.apache.hadoop.hdfs.protocol.CacheDirectiveEntry;
import org.apache.hadoop.hdfs.protocol.CacheDirectiveInfo;
@ -69,6 +68,7 @@
import org.apache.hadoop.hdfs.server.blockmanagement.DatanodeDescriptor.CachedBlocksList;
import org.apache.hadoop.hdfs.server.blockmanagement.DatanodeDescriptor.CachedBlocksList.Type;
import org.apache.hadoop.hdfs.server.namenode.metrics.NameNodeMetrics;
import org.apache.hadoop.hdfs.server.namenode.snapshot.Snapshot;
import org.apache.hadoop.hdfs.server.namenode.startupprogress.Phase;
import org.apache.hadoop.hdfs.server.namenode.startupprogress.StartupProgress;
import org.apache.hadoop.hdfs.server.namenode.startupprogress.StartupProgress.Counter;
@ -399,7 +399,8 @@ private CacheDirectiveStats computeNeeded(String path, short replication) {
requestedBytes = file.computeFileSize();
} else if (node.isDirectory()) {
INodeDirectory dir = node.asDirectory();
ReadOnlyList<INode> children = dir.getChildrenList(null);
ReadOnlyList<INode> children = dir
.getChildrenList(Snapshot.CURRENT_STATE_ID);
requestedFiles = children.size();
for (INode child : children) {
if (child.isFile()) {

113
hadoop-hdfs-project/hadoop-hdfs/src/main/java/org/apache/hadoop/hdfs/server/namenode/FSDirectory.java
View File

@ -614,14 +614,14 @@ boolean unprotectedRenameTo(String src, String dst, long timestamp)
INode srcChild = srcIIP.getLastINode();
final byte[] srcChildName = srcChild.getLocalNameBytes();
final boolean isSrcInSnapshot = srcChild.isInLatestSnapshot(
srcIIP.getLatestSnapshot());
srcIIP.getLatestSnapshotId());
final boolean srcChildIsReference = srcChild.isReference();
// Record the snapshot on srcChild. After the rename, before any new
// snapshot is taken on the dst tree, changes will be recorded in the latest
// snapshot of the src tree.
if (isSrcInSnapshot) {
srcChild = srcChild.recordModification(srcIIP.getLatestSnapshot());
srcChild = srcChild.recordModification(srcIIP.getLatestSnapshotId());
srcIIP.setLastINode(srcChild);
}
@ -629,17 +629,16 @@ boolean unprotectedRenameTo(String src, String dst, long timestamp)
final INodeReference.WithCount withCount;
Quota.Counts oldSrcCounts = Quota.Counts.newInstance();
int srcRefDstSnapshot = srcChildIsReference ? srcChild.asReference()
.getDstSnapshotId() : Snapshot.INVALID_ID;
.getDstSnapshotId() : Snapshot.CURRENT_STATE_ID;
if (isSrcInSnapshot) {
final INodeReference.WithName withName =
srcIIP.getINode(-2).asDirectory().replaceChild4ReferenceWithName(
srcChild, srcIIP.getLatestSnapshot());
srcChild, srcIIP.getLatestSnapshotId());
withCount = (INodeReference.WithCount) withName.getReferredINode();
srcChild = withName;
srcIIP.setLastINode(srcChild);
// get the counts before rename
withCount.getReferredINode().computeQuotaUsage(oldSrcCounts, true,
Snapshot.INVALID_ID);
withCount.getReferredINode().computeQuotaUsage(oldSrcCounts, true);
} else if (srcChildIsReference) {
// srcChild is reference but srcChild is not in latest snapshot
withCount = (WithCount) srcChild.asReference().getReferredINode();
@ -675,10 +674,9 @@ boolean unprotectedRenameTo(String src, String dst, long timestamp)
toDst = srcChild;
} else {
withCount.getReferredINode().setLocalName(dstChildName);
Snapshot dstSnapshot = dstIIP.getLatestSnapshot();
int dstSnapshotId = dstIIP.getLatestSnapshotId();
final INodeReference.DstReference ref = new INodeReference.DstReference(
dstParent.asDirectory(), withCount,
dstSnapshot == null ? Snapshot.INVALID_ID : dstSnapshot.getId());
dstParent.asDirectory(), withCount, dstSnapshotId);
toDst = ref;
}
@ -690,9 +688,9 @@ boolean unprotectedRenameTo(String src, String dst, long timestamp)
}
// update modification time of dst and the parent of src
final INode srcParent = srcIIP.getINode(-2);
srcParent.updateModificationTime(timestamp, srcIIP.getLatestSnapshot());
srcParent.updateModificationTime(timestamp, srcIIP.getLatestSnapshotId());
dstParent = dstIIP.getINode(-2); // refresh dstParent
dstParent.updateModificationTime(timestamp, dstIIP.getLatestSnapshot());
dstParent.updateModificationTime(timestamp, dstIIP.getLatestSnapshotId());
// update moved leases with new filename
getFSNamesystem().unprotectedChangeLease(src, dst);
@ -700,7 +698,7 @@ boolean unprotectedRenameTo(String src, String dst, long timestamp)
if (isSrcInSnapshot) {
// get the counts after rename
Quota.Counts newSrcCounts = srcChild.computeQuotaUsage(
Quota.Counts.newInstance(), false, Snapshot.INVALID_ID);
Quota.Counts.newInstance(), false);
newSrcCounts.subtract(oldSrcCounts);
srcParent.addSpaceConsumed(newSrcCounts.get(Quota.NAMESPACE),
newSrcCounts.get(Quota.DISKSPACE), false);
@ -732,8 +730,7 @@ boolean unprotectedRenameTo(String src, String dst, long timestamp)
if (isSrcInSnapshot) {
// srcParent must have snapshot feature since isSrcInSnapshot is true
// and src node has been removed from srcParent
srcParent.undoRename4ScrParent(oldSrcChild.asReference(), srcChild,
srcIIP.getLatestSnapshot());
srcParent.undoRename4ScrParent(oldSrcChild.asReference(), srcChild);
} else {
// original srcChild is not in latest snapshot, we only need to add
// the srcChild back
@ -836,7 +833,7 @@ boolean unprotectedRenameTo(String src, String dst, long timestamp,
}
if (dstInode.isDirectory()) {
final ReadOnlyList<INode> children = dstInode.asDirectory()
.getChildrenList(null);
.getChildrenList(Snapshot.CURRENT_STATE_ID);
if (!children.isEmpty()) {
error = "rename destination directory is not empty: " + dst;
NameNode.stateChangeLog.warn(
@ -867,31 +864,30 @@ boolean unprotectedRenameTo(String src, String dst, long timestamp,
INode srcChild = srcIIP.getLastINode();
final byte[] srcChildName = srcChild.getLocalNameBytes();
final boolean isSrcInSnapshot = srcChild.isInLatestSnapshot(
srcIIP.getLatestSnapshot());
srcIIP.getLatestSnapshotId());
final boolean srcChildIsReference = srcChild.isReference();
// Record the snapshot on srcChild. After the rename, before any new
// snapshot is taken on the dst tree, changes will be recorded in the latest
// snapshot of the src tree.
if (isSrcInSnapshot) {
srcChild = srcChild.recordModification(srcIIP.getLatestSnapshot());
srcChild = srcChild.recordModification(srcIIP.getLatestSnapshotId());
srcIIP.setLastINode(srcChild);
}
// check srcChild for reference
final INodeReference.WithCount withCount;
int srcRefDstSnapshot = srcChildIsReference ? srcChild.asReference()
.getDstSnapshotId() : Snapshot.INVALID_ID;
.getDstSnapshotId() : Snapshot.CURRENT_STATE_ID;
Quota.Counts oldSrcCounts = Quota.Counts.newInstance();
if (isSrcInSnapshot) {
final INodeReference.WithName withName = srcIIP.getINode(-2).asDirectory()
.replaceChild4ReferenceWithName(srcChild, srcIIP.getLatestSnapshot());
.replaceChild4ReferenceWithName(srcChild, srcIIP.getLatestSnapshotId());
withCount = (INodeReference.WithCount) withName.getReferredINode();
srcChild = withName;
srcIIP.setLastINode(srcChild);
// get the counts before rename
withCount.getReferredINode().computeQuotaUsage(oldSrcCounts, true,
Snapshot.INVALID_ID);
withCount.getReferredINode().computeQuotaUsage(oldSrcCounts, true);
} else if (srcChildIsReference) {
// srcChild is reference but srcChild is not in latest snapshot
withCount = (WithCount) srcChild.asReference().getReferredINode();
@ -935,10 +931,9 @@ boolean unprotectedRenameTo(String src, String dst, long timestamp,
toDst = srcChild;
} else {
withCount.getReferredINode().setLocalName(dstChildName);
Snapshot dstSnapshot = dstIIP.getLatestSnapshot();
int dstSnapshotId = dstIIP.getLatestSnapshotId();
final INodeReference.DstReference ref = new INodeReference.DstReference(
dstIIP.getINode(-2).asDirectory(), withCount,
dstSnapshot == null ? Snapshot.INVALID_ID : dstSnapshot.getId());
dstIIP.getINode(-2).asDirectory(), withCount, dstSnapshotId);
toDst = ref;
}
@ -952,9 +947,9 @@ boolean unprotectedRenameTo(String src, String dst, long timestamp,
}
final INode srcParent = srcIIP.getINode(-2);
srcParent.updateModificationTime(timestamp, srcIIP.getLatestSnapshot());
srcParent.updateModificationTime(timestamp, srcIIP.getLatestSnapshotId());
dstParent = dstIIP.getINode(-2);
dstParent.updateModificationTime(timestamp, dstIIP.getLatestSnapshot());
dstParent.updateModificationTime(timestamp, dstIIP.getLatestSnapshotId());
// update moved lease with new filename
getFSNamesystem().unprotectedChangeLease(src, dst);
@ -964,8 +959,8 @@ boolean unprotectedRenameTo(String src, String dst, long timestamp,
undoRemoveDst = false;
BlocksMapUpdateInfo collectedBlocks = new BlocksMapUpdateInfo();
List<INode> removedINodes = new ChunkedArrayList<INode>();
filesDeleted = removedDst.cleanSubtree(null,
dstIIP.getLatestSnapshot(), collectedBlocks, removedINodes, true)
filesDeleted = removedDst.cleanSubtree(Snapshot.CURRENT_STATE_ID,
dstIIP.getLatestSnapshotId(), collectedBlocks, removedINodes, true)
.get(Quota.NAMESPACE);
getFSNamesystem().removePathAndBlocks(src, collectedBlocks,
removedINodes);
@ -981,7 +976,7 @@ boolean unprotectedRenameTo(String src, String dst, long timestamp,
if (isSrcInSnapshot) {
// get the counts after rename
Quota.Counts newSrcCounts = srcChild.computeQuotaUsage(
Quota.Counts.newInstance(), false, Snapshot.INVALID_ID);
Quota.Counts.newInstance(), false);
newSrcCounts.subtract(oldSrcCounts);
srcParent.addSpaceConsumed(newSrcCounts.get(Quota.NAMESPACE),
newSrcCounts.get(Quota.DISKSPACE), false);
@ -1012,8 +1007,7 @@ boolean unprotectedRenameTo(String src, String dst, long timestamp,
}
if (srcParent.isWithSnapshot()) {
srcParent.undoRename4ScrParent(oldSrcChild.asReference(), srcChild,
srcIIP.getLatestSnapshot());
srcParent.undoRename4ScrParent(oldSrcChild.asReference(), srcChild);
} else {
// srcParent is not an INodeDirectoryWithSnapshot, we only need to add
// the srcChild back
@ -1024,7 +1018,7 @@ boolean unprotectedRenameTo(String src, String dst, long timestamp,
// Rename failed - restore dst
if (dstParent.isDirectory() && dstParent.asDirectory().isWithSnapshot()) {
dstParent.asDirectory().undoRename4DstParent(removedDst,
dstIIP.getLatestSnapshot());
dstIIP.getLatestSnapshotId());
} else {
addLastINodeNoQuotaCheck(dstIIP, removedDst);
}
@ -1088,7 +1082,7 @@ Block[] unprotectedSetReplication(String src, short replication,
updateCount(iip, 0, dsDelta, true);
}
file = file.setFileReplication(replication, iip.getLatestSnapshot(),
file = file.setFileReplication(replication, iip.getLatestSnapshotId(),
inodeMap);
final short newBR = file.getBlockReplication();
@ -1155,7 +1149,7 @@ void unprotectedSetPermission(String src, FsPermission permissions)
if (inode == null) {
throw new FileNotFoundException("File does not exist: " + src);
}
inode.setPermission(permissions, inodesInPath.getLatestSnapshot());
inode.setPermission(permissions, inodesInPath.getLatestSnapshotId());
}
void setOwner(String src, String username, String groupname)
@ -1180,10 +1174,10 @@ void unprotectedSetOwner(String src, String username, String groupname)
throw new FileNotFoundException("File does not exist: " + src);
}
if (username != null) {
inode = inode.setUser(username, inodesInPath.getLatestSnapshot());
inode = inode.setUser(username, inodesInPath.getLatestSnapshotId());
}
if (groupname != null) {
inode.setGroup(groupname, inodesInPath.getLatestSnapshot());
inode.setGroup(groupname, inodesInPath.getLatestSnapshotId());
}
}
@ -1225,12 +1219,12 @@ void unprotectedConcat(String target, String [] srcs, long timestamp)
final INode[] trgINodes = trgIIP.getINodes();
final INodeFile trgInode = trgIIP.getLastINode().asFile();
INodeDirectory trgParent = trgINodes[trgINodes.length-2].asDirectory();
final Snapshot trgLatestSnapshot = trgIIP.getLatestSnapshot();
final int trgLatestSnapshot = trgIIP.getLatestSnapshotId();
final INodeFile [] allSrcInodes = new INodeFile[srcs.length];
for(int i = 0; i < srcs.length; i++) {
final INodesInPath iip = getINodesInPath4Write(srcs[i]);
final Snapshot latest = iip.getLatestSnapshot();
final int latest = iip.getLatestSnapshotId();
final INode inode = iip.getLastINode();
// check if the file in the latest snapshot
@ -1354,7 +1348,7 @@ boolean isNonEmptyDirectory(String path) throws UnresolvedLinkException {
//not found or not a directory
return false;
}
final Snapshot s = inodesInPath.getPathSnapshot();
final int s = inodesInPath.getPathSnapshotId();
return !inode.asDirectory().getChildrenList(s).isEmpty();
} finally {
readUnlock();
@ -1408,7 +1402,7 @@ long unprotectedDelete(INodesInPath iip, BlocksMapUpdateInfo collectedBlocks,
}
// record modification
final Snapshot latestSnapshot = iip.getLatestSnapshot();
final int latestSnapshot = iip.getLatestSnapshotId();
targetNode = targetNode.recordModification(latestSnapshot);
iip.setLastINode(targetNode);
@ -1429,8 +1423,8 @@ long unprotectedDelete(INodesInPath iip, BlocksMapUpdateInfo collectedBlocks,
if (!targetNode.isInLatestSnapshot(latestSnapshot)) {
targetNode.destroyAndCollectBlocks(collectedBlocks, removedINodes);
} else {
Quota.Counts counts = targetNode.cleanSubtree(null, latestSnapshot,
collectedBlocks, removedINodes, true);
Quota.Counts counts = targetNode.cleanSubtree(Snapshot.CURRENT_STATE_ID,
latestSnapshot, collectedBlocks, removedINodes, true);
parent.addSpaceConsumed(-counts.get(Quota.NAMESPACE),
-counts.get(Quota.DISKSPACE), true);
removed = counts.get(Quota.NAMESPACE);
@ -1467,7 +1461,7 @@ private static void checkSnapshot(INode target,
}
}
}
for (INode child : targetDir.getChildrenList(null)) {
for (INode child : targetDir.getChildrenList(Snapshot.CURRENT_STATE_ID)) {
checkSnapshot(child, snapshottableDirs);
}
}
@ -1491,7 +1485,7 @@ DirectoryListing getListing(String src, byte[] startAfter,
return getSnapshotsListing(srcs, startAfter);
}
final INodesInPath inodesInPath = rootDir.getLastINodeInPath(srcs, true);
final Snapshot snapshot = inodesInPath.getPathSnapshot();
final int snapshot = inodesInPath.getPathSnapshotId();
final INode targetNode = inodesInPath.getINode(0);
if (targetNode == null)
return null;
@ -1543,7 +1537,8 @@ private DirectoryListing getSnapshotsListing(String src, byte[] startAfter)
final HdfsFileStatus listing[] = new HdfsFileStatus[numOfListing];
for (int i = 0; i < numOfListing; i++) {
Root sRoot = snapshots.get(i + skipSize).getRoot();
listing[i] = createFileStatus(sRoot.getLocalNameBytes(), sRoot, null);
listing[i] = createFileStatus(sRoot.getLocalNameBytes(), sRoot,
Snapshot.CURRENT_STATE_ID);
}
return new DirectoryListing(
listing, snapshots.size() - skipSize - numOfListing);
@ -1566,7 +1561,7 @@ HdfsFileStatus getFileInfo(String src, boolean resolveLink)
final INodesInPath inodesInPath = rootDir.getLastINodeInPath(srcs, resolveLink);
final INode i = inodesInPath.getINode(0);
return i == null? null: createFileStatus(HdfsFileStatus.EMPTY_NAME, i,
inodesInPath.getPathSnapshot());
inodesInPath.getPathSnapshotId());
} finally {
readUnlock();
}
@ -2129,7 +2124,7 @@ void verifyMaxDirItems(INode[] pathComponents, int pos)
}
final INodeDirectory parent = pathComponents[pos-1].asDirectory();
final int count = parent.getChildrenList(null).size();
final int count = parent.getChildrenList(Snapshot.CURRENT_STATE_ID).size();
if (count >= maxDirItems) {
final MaxDirectoryItemsExceededException e
= new MaxDirectoryItemsExceededException(maxDirItems, count);
@ -2193,7 +2188,7 @@ private boolean addChild(INodesInPath iip, int pos,
final INodeDirectory parent = inodes[pos-1].asDirectory();
boolean added = false;
try {
added = parent.addChild(child, true, iip.getLatestSnapshot());
added = parent.addChild(child, true, iip.getLatestSnapshotId());
} catch (QuotaExceededException e) {
updateCountNoQuotaCheck(iip, pos,
-counts.get(Quota.NAMESPACE), -counts.get(Quota.DISKSPACE));
@ -2228,7 +2223,7 @@ private boolean addLastINodeNoQuotaCheck(INodesInPath inodesInPath, INode i) {
*/
private long removeLastINode(final INodesInPath iip)
throws QuotaExceededException {
final Snapshot latestSnapshot = iip.getLatestSnapshot();
final int latestSnapshot = iip.getLatestSnapshotId();
final INode last = iip.getLastINode();
final INodeDirectory parent = iip.getINode(-2).asDirectory();
if (!parent.removeChild(last, latestSnapshot)) {
@ -2382,7 +2377,7 @@ INodeDirectory unprotectedSetQuota(String src, long nsQuota, long dsQuota)
return null;
}
final Snapshot latest = iip.getLatestSnapshot();
final int latest = iip.getLatestSnapshotId();
dirNode = dirNode.recordModification(latest);
dirNode.setQuota(nsQuota, dsQuota);
return dirNode;
@ -2425,11 +2420,11 @@ long totalInodes() {
* Sets the access time on the file/directory. Logs it in the transaction log.
*/
void setTimes(String src, INode inode, long mtime, long atime, boolean force,
Snapshot latest) throws QuotaExceededException {
int latestSnapshotId) throws QuotaExceededException {
boolean status = false;
writeLock();
try {
status = unprotectedSetTimes(inode, mtime, atime, force, latest);
status = unprotectedSetTimes(inode, mtime, atime, force, latestSnapshotId);
} finally {
writeUnlock();
}
@ -2443,11 +2438,11 @@ boolean unprotectedSetTimes(String src, long mtime, long atime, boolean force)
assert hasWriteLock();
final INodesInPath i = getLastINodeInPath(src);
return unprotectedSetTimes(i.getLastINode(), mtime, atime, force,
i.getLatestSnapshot());
i.getLatestSnapshotId());
}
private boolean unprotectedSetTimes(INode inode, long mtime,
long atime, boolean force, Snapshot latest) throws QuotaExceededException {
long atime, boolean force, int latest) throws QuotaExceededException {
assert hasWriteLock();
boolean status = false;
if (mtime != -1) {
@ -2455,7 +2450,7 @@ private boolean unprotectedSetTimes(INode inode, long mtime,
status = true;
}
if (atime != -1) {
long inodeTime = inode.getAccessTime(null);
long inodeTime = inode.getAccessTime();
// if the last access time update was within the last precision interval, then
// no need to store access time
@ -2495,7 +2490,7 @@ void reset() {
* @throws IOException if any error occurs
*/
private HdfsFileStatus createFileStatus(byte[] path, INode node,
boolean needLocation, Snapshot snapshot) throws IOException {
boolean needLocation, int snapshot) throws IOException {
if (needLocation) {
return createLocatedFileStatus(path, node, snapshot);
} else {
@ -2506,7 +2501,7 @@ private HdfsFileStatus createFileStatus(byte[] path, INode node,
* Create FileStatus by file INode
*/
HdfsFileStatus createFileStatus(byte[] path, INode node,
Snapshot snapshot) {
int snapshot) {
long size = 0; // length is zero for directories
short replication = 0;
long blocksize = 0;
@ -2539,7 +2534,7 @@ HdfsFileStatus createFileStatus(byte[] path, INode node,
* Create FileStatus with location info by file INode
*/
private HdfsLocatedFileStatus createLocatedFileStatus(byte[] path,
INode node, Snapshot snapshot) throws IOException {
INode node, int snapshot) throws IOException {
assert hasReadLock();
long size = 0; // length is zero for directories
short replication = 0;
@ -2551,7 +2546,7 @@ private HdfsLocatedFileStatus createLocatedFileStatus(byte[] path,
replication = fileNode.getFileReplication(snapshot);
blocksize = fileNode.getPreferredBlockSize();
final boolean inSnapshot = snapshot != null;
final boolean inSnapshot = snapshot != Snapshot.CURRENT_STATE_ID;
final boolean isUc = inSnapshot ? false : fileNode.isUnderConstruction();
final long fileSize = !inSnapshot && isUc ?
fileNode.computeFileSizeNotIncludingLastUcBlock() : size;

15
hadoop-hdfs-project/hadoop-hdfs/src/main/java/org/apache/hadoop/hdfs/server/namenode/FSEditLogLoader.java
View File

@ -24,14 +24,12 @@
import java.io.InputStream;
import java.util.Arrays;
import java.util.EnumMap;
import java.util.EnumSet;
import java.util.List;
import org.apache.commons.logging.Log;
import org.apache.commons.logging.LogFactory;
import org.apache.hadoop.classification.InterfaceAudience;
import org.apache.hadoop.classification.InterfaceStability;
import org.apache.hadoop.fs.CacheFlag;
import org.apache.hadoop.hdfs.protocol.Block;
import org.apache.hadoop.hdfs.protocol.CacheDirectiveInfo;
import org.apache.hadoop.hdfs.protocol.HdfsConstants;
@ -79,6 +77,7 @@
import org.apache.hadoop.hdfs.server.namenode.FSEditLogOp.UpdateMasterKeyOp;
import org.apache.hadoop.hdfs.server.namenode.INode.BlocksMapUpdateInfo;
import org.apache.hadoop.hdfs.server.namenode.LeaseManager.Lease;
import org.apache.hadoop.hdfs.server.namenode.snapshot.Snapshot;
import org.apache.hadoop.hdfs.server.namenode.startupprogress.Phase;
import org.apache.hadoop.hdfs.server.namenode.startupprogress.StartupProgress;
import org.apache.hadoop.hdfs.server.namenode.startupprogress.StartupProgress.Counter;
@ -327,7 +326,7 @@ private long applyEditLogOp(FSEditLogOp op, FSDirectory fsDir,
// add the op into retry cache if necessary
if (toAddRetryCache) {
HdfsFileStatus stat = fsNamesys.dir.createFileStatus(
HdfsFileStatus.EMPTY_NAME, newFile, null);
HdfsFileStatus.EMPTY_NAME, newFile, Snapshot.CURRENT_STATE_ID);
fsNamesys.addCacheEntryWithPayload(addCloseOp.rpcClientId,
addCloseOp.rpcCallId, stat);
}
@ -340,7 +339,7 @@ private long applyEditLogOp(FSEditLogOp op, FSDirectory fsDir,
}
LocatedBlock lb = fsNamesys.prepareFileForWrite(addCloseOp.path,
oldFile, addCloseOp.clientName, addCloseOp.clientMachine, null,
false, iip.getLatestSnapshot(), false);
false, iip.getLatestSnapshotId(), false);
newFile = INodeFile.valueOf(fsDir.getINode(addCloseOp.path),
addCloseOp.path, true);
@ -356,8 +355,8 @@ private long applyEditLogOp(FSEditLogOp op, FSDirectory fsDir,
// update the block list.
// Update the salient file attributes.
newFile.setAccessTime(addCloseOp.atime, null);
newFile.setModificationTime(addCloseOp.mtime, null);
newFile.setAccessTime(addCloseOp.atime, Snapshot.CURRENT_STATE_ID);
newFile.setModificationTime(addCloseOp.mtime, Snapshot.CURRENT_STATE_ID);
updateBlocks(fsDir, addCloseOp, newFile);
break;
}
@ -375,8 +374,8 @@ private long applyEditLogOp(FSEditLogOp op, FSDirectory fsDir,
final INodeFile file = INodeFile.valueOf(iip.getINode(0), addCloseOp.path);
// Update the salient file attributes.
file.setAccessTime(addCloseOp.atime, null);
file.setModificationTime(addCloseOp.mtime, null);
file.setAccessTime(addCloseOp.atime, Snapshot.CURRENT_STATE_ID);
file.setModificationTime(addCloseOp.mtime, Snapshot.CURRENT_STATE_ID);
updateBlocks(fsDir, addCloseOp, file);
// Now close the file

3
hadoop-hdfs-project/hadoop-hdfs/src/main/java/org/apache/hadoop/hdfs/server/namenode/FSImage.java
View File

@ -53,6 +53,7 @@
import org.apache.hadoop.hdfs.server.namenode.FSImageStorageInspector.FSImageFile;
import org.apache.hadoop.hdfs.server.namenode.NNStorage.NameNodeDirType;
import org.apache.hadoop.hdfs.server.namenode.NNStorage.NameNodeFile;
import org.apache.hadoop.hdfs.server.namenode.snapshot.Snapshot;
import org.apache.hadoop.hdfs.server.namenode.startupprogress.Phase;
import org.apache.hadoop.hdfs.server.namenode.startupprogress.StartupProgress;
import org.apache.hadoop.hdfs.server.protocol.CheckpointCommand;
@ -770,7 +771,7 @@ private static void updateCountForQuotaRecursively(INodeDirectory dir,
dir.computeQuotaUsage4CurrentDirectory(counts);
for (INode child : dir.getChildrenList(null)) {
for (INode child : dir.getChildrenList(Snapshot.CURRENT_STATE_ID)) {
if (child.isDirectory()) {
updateCountForQuotaRecursively(child.asDirectory(), counts);
} else {

3
hadoop-hdfs-project/hadoop-hdfs/src/main/java/org/apache/hadoop/hdfs/server/namenode/FSImageFormat.java
View File

@ -1111,7 +1111,8 @@ private void saveImage(INodeDirectory current, DataOutputStream out,
return;
}
final ReadOnlyList<INode> children = current.getChildrenList(null);
final ReadOnlyList<INode> children = current
.getChildrenList(Snapshot.CURRENT_STATE_ID);
int dirNum = 0;
List<INodeDirectory> snapshotDirs = null;
DirectoryWithSnapshotFeature sf = current.getDirectoryWithSnapshotFeature();

32
hadoop-hdfs-project/hadoop-hdfs/src/main/java/org/apache/hadoop/hdfs/server/namenode/FSNamesystem.java
View File

@ -176,7 +176,15 @@
import org.apache.hadoop.hdfs.security.token.block.BlockTokenSecretManager.AccessMode;
import org.apache.hadoop.hdfs.security.token.delegation.DelegationTokenIdentifier;
import org.apache.hadoop.hdfs.security.token.delegation.DelegationTokenSecretManager;
import org.apache.hadoop.hdfs.server.blockmanagement.*;
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.blockmanagement.BlockManager;
import org.apache.hadoop.hdfs.server.blockmanagement.DatanodeDescriptor;
import org.apache.hadoop.hdfs.server.blockmanagement.DatanodeManager;
import org.apache.hadoop.hdfs.server.blockmanagement.DatanodeStatistics;
import org.apache.hadoop.hdfs.server.blockmanagement.DatanodeStorageInfo;
import org.apache.hadoop.hdfs.server.blockmanagement.OutOfV1GenerationStampsException;
import org.apache.hadoop.hdfs.server.common.GenerationStamp;
import org.apache.hadoop.hdfs.server.common.HdfsServerConstants.BlockUCState;
import org.apache.hadoop.hdfs.server.common.HdfsServerConstants.NamenodeRole;
@ -1617,11 +1625,11 @@ && doAccessTime && isAccessTimeSupported()) {
if (isReadOp) {
continue;
}
dir.setTimes(src, inode, -1, now, false, iip.getLatestSnapshot());
dir.setTimes(src, inode, -1, now, false, iip.getLatestSnapshotId());
}
}
final long fileSize = iip.isSnapshot() ?
inode.computeFileSize(iip.getPathSnapshot())
inode.computeFileSize(iip.getPathSnapshotId())
: inode.computeFileSizeNotIncludingLastUcBlock();
boolean isUc = inode.isUnderConstruction();
if (iip.isSnapshot()) {
@ -1869,7 +1877,7 @@ private void setTimesInt(String src, long mtime, long atime)
final INodesInPath iip = dir.getINodesInPath4Write(src);
final INode inode = iip.getLastINode();
if (inode != null) {
dir.setTimes(src, inode, mtime, atime, true, iip.getLatestSnapshot());
dir.setTimes(src, inode, mtime, atime, true, iip.getLatestSnapshotId());
resultingStat = getAuditFileInfo(src, false);
} else {
throw new FileNotFoundException("File/Directory " + src + " does not exist.");
@ -2265,7 +2273,7 @@ private LocatedBlock appendFileInternal(FSPermissionChecker pc, String src,
final DatanodeDescriptor clientNode =
blockManager.getDatanodeManager().getDatanodeByHost(clientMachine);
return prepareFileForWrite(src, myFile, holder, clientMachine, clientNode,
true, iip.getLatestSnapshot(), logRetryCache);
true, iip.getLatestSnapshotId(), logRetryCache);
} catch (IOException ie) {
NameNode.stateChangeLog.warn("DIR* NameSystem.append: " +ie.getMessage());
throw ie;
@ -2290,7 +2298,7 @@ private LocatedBlock appendFileInternal(FSPermissionChecker pc, String src,
*/
LocatedBlock prepareFileForWrite(String src, INodeFile file,
String leaseHolder, String clientMachine, DatanodeDescriptor clientNode,
boolean writeToEditLog, Snapshot latestSnapshot, boolean logRetryCache)
boolean writeToEditLog, int latestSnapshot, boolean logRetryCache)
throws IOException {
file = file.recordModification(latestSnapshot);
final INodeFile cons = file.toUnderConstruction(leaseHolder, clientMachine,
@ -2925,7 +2933,7 @@ private boolean completeFileInternal(String src,
}
finalizeINodeFileUnderConstruction(src, pendingFile,
iip.getLatestSnapshot());
iip.getLatestSnapshotId());
return true;
}
@ -3634,7 +3642,7 @@ boolean internalReleaseLease(Lease lease, String src,
// then reap lease immediately and close the file.
if(nrCompleteBlocks == nrBlocks) {
finalizeINodeFileUnderConstruction(src, pendingFile,
iip.getLatestSnapshot());
iip.getLatestSnapshotId());
NameNode.stateChangeLog.warn("BLOCK*"
+ " internalReleaseLease: All existing blocks are COMPLETE,"
+ " lease removed, file closed.");
@ -3683,7 +3691,7 @@ boolean internalReleaseLease(Lease lease, String src,
if(penultimateBlockMinReplication &&
blockManager.checkMinReplication(lastBlock)) {
finalizeINodeFileUnderConstruction(src, pendingFile,
iip.getLatestSnapshot());
iip.getLatestSnapshotId());
NameNode.stateChangeLog.warn("BLOCK*"
+ " internalReleaseLease: Committed blocks are minimally replicated,"
+ " lease removed, file closed.");
@ -3714,7 +3722,7 @@ boolean internalReleaseLease(Lease lease, String src,
// We can remove this block and close the file.
pendingFile.removeLastBlock(lastBlock);
finalizeINodeFileUnderConstruction(src, pendingFile,
iip.getLatestSnapshot());
iip.getLatestSnapshotId());
NameNode.stateChangeLog.warn("BLOCK* internalReleaseLease: "
+ "Removed empty last block and closed file.");
return true;
@ -3775,7 +3783,7 @@ private void commitOrCompleteLastBlock(final INodeFile fileINode,
}
private void finalizeINodeFileUnderConstruction(String src,
INodeFile pendingFile, Snapshot latestSnapshot) throws IOException,
INodeFile pendingFile, int latestSnapshot) throws IOException,
UnresolvedLinkException {
assert hasWriteLock();
FileUnderConstructionFeature uc = pendingFile.getFileUnderConstructionFeature();
@ -3975,7 +3983,7 @@ String closeFileCommitBlocks(INodeFile pendingFile, BlockInfo storedBlock)
//remove lease, close file
finalizeINodeFileUnderConstruction(src, pendingFile,
Snapshot.findLatestSnapshot(pendingFile, null));
Snapshot.findLatestSnapshot(pendingFile, Snapshot.CURRENT_STATE_ID));
return src;
}

52
hadoop-hdfs-project/hadoop-hdfs/src/main/java/org/apache/hadoop/hdfs/server/namenode/FSPermissionChecker.java
View File

@ -17,7 +17,6 @@
*/
package org.apache.hadoop.hdfs.server.namenode;
import java.io.IOException;
import java.util.Arrays;
import java.util.Collections;
import java.util.HashSet;
@ -29,7 +28,6 @@
import org.apache.hadoop.fs.UnresolvedLinkException;
import org.apache.hadoop.fs.permission.FsAction;
import org.apache.hadoop.fs.permission.FsPermission;
import org.apache.hadoop.hdfs.server.namenode.snapshot.Snapshot;
import org.apache.hadoop.security.AccessControlException;
import org.apache.hadoop.security.UserGroupInformation;
@ -142,54 +140,54 @@ void checkPermission(String path, INodeDirectory root, boolean doCheckOwner,
// check if (parentAccess != null) && file exists, then check sb
// If resolveLink, the check is performed on the link target.
final INodesInPath inodesInPath = root.getINodesInPath(path, resolveLink);
final Snapshot snapshot = inodesInPath.getPathSnapshot();
final int snapshotId = inodesInPath.getPathSnapshotId();
final INode[] inodes = inodesInPath.getINodes();
int ancestorIndex = inodes.length - 2;
for(; ancestorIndex >= 0 && inodes[ancestorIndex] == null;
ancestorIndex--);
checkTraverse(inodes, ancestorIndex, snapshot);
checkTraverse(inodes, ancestorIndex, snapshotId);
final INode last = inodes[inodes.length - 1];
if (parentAccess != null && parentAccess.implies(FsAction.WRITE)
&& inodes.length > 1 && last != null) {
checkStickyBit(inodes[inodes.length - 2], last, snapshot);
checkStickyBit(inodes[inodes.length - 2], last, snapshotId);
}
if (ancestorAccess != null && inodes.length > 1) {
check(inodes, ancestorIndex, snapshot, ancestorAccess);
check(inodes, ancestorIndex, snapshotId, ancestorAccess);
}
if (parentAccess != null && inodes.length > 1) {
check(inodes, inodes.length - 2, snapshot, parentAccess);
check(inodes, inodes.length - 2, snapshotId, parentAccess);
}
if (access != null) {
check(last, snapshot, access);
check(last, snapshotId, access);
}
if (subAccess != null) {
checkSubAccess(last, snapshot, subAccess);
checkSubAccess(last, snapshotId, subAccess);
}
if (doCheckOwner) {
checkOwner(last, snapshot);
checkOwner(last, snapshotId);
}
}
/** Guarded by {@link FSNamesystem#readLock()} */
private void checkOwner(INode inode, Snapshot snapshot
private void checkOwner(INode inode, int snapshotId
) throws AccessControlException {
if (inode != null && user.equals(inode.getUserName(snapshot))) {
if (inode != null && user.equals(inode.getUserName(snapshotId))) {
return;
}
throw new AccessControlException("Permission denied");
}
/** Guarded by {@link FSNamesystem#readLock()} */
private void checkTraverse(INode[] inodes, int last, Snapshot snapshot
private void checkTraverse(INode[] inodes, int last, int snapshotId
) throws AccessControlException {
for(int j = 0; j <= last; j++) {
check(inodes[j], snapshot, FsAction.EXECUTE);
check(inodes[j], snapshotId, FsAction.EXECUTE);
}
}
/** Guarded by {@link FSNamesystem#readLock()} */
private void checkSubAccess(INode inode, Snapshot snapshot, FsAction access
private void checkSubAccess(INode inode, int snapshotId, FsAction access
) throws AccessControlException {
if (inode == null || !inode.isDirectory()) {
return;
@ -198,9 +196,9 @@ private void checkSubAccess(INode inode, Snapshot snapshot, FsAction access
Stack<INodeDirectory> directories = new Stack<INodeDirectory>();
for(directories.push(inode.asDirectory()); !directories.isEmpty(); ) {
INodeDirectory d = directories.pop();
check(d, snapshot, access);
check(d, snapshotId, access);
for(INode child : d.getChildrenList(snapshot)) {
for(INode child : d.getChildrenList(snapshotId)) {
if (child.isDirectory()) {
directories.push(child.asDirectory());
}
@ -209,23 +207,23 @@ private void checkSubAccess(INode inode, Snapshot snapshot, FsAction access
}
/** Guarded by {@link FSNamesystem#readLock()} */
private void check(INode[] inodes, int i, Snapshot snapshot, FsAction access
private void check(INode[] inodes, int i, int snapshotId, FsAction access
) throws AccessControlException {
check(i >= 0? inodes[i]: null, snapshot, access);
check(i >= 0? inodes[i]: null, snapshotId, access);
}
/** Guarded by {@link FSNamesystem#readLock()} */
private void check(INode inode, Snapshot snapshot, FsAction access
private void check(INode inode, int snapshotId, FsAction access
) throws AccessControlException {
if (inode == null) {
return;
}
FsPermission mode = inode.getFsPermission(snapshot);
FsPermission mode = inode.getFsPermission(snapshotId);
if (user.equals(inode.getUserName(snapshot))) { //user class
if (user.equals(inode.getUserName(snapshotId))) { //user class
if (mode.getUserAction().implies(access)) { return; }
}
else if (groups.contains(inode.getGroupName(snapshot))) { //group class
else if (groups.contains(inode.getGroupName(snapshotId))) { //group class
if (mode.getGroupAction().implies(access)) { return; }
}
else { //other class
@ -236,19 +234,19 @@ else if (groups.contains(inode.getGroupName(snapshot))) { //group class
}
/** Guarded by {@link FSNamesystem#readLock()} */
private void checkStickyBit(INode parent, INode inode, Snapshot snapshot
private void checkStickyBit(INode parent, INode inode, int snapshotId
) throws AccessControlException {
if(!parent.getFsPermission(snapshot).getStickyBit()) {
if(!parent.getFsPermission(snapshotId).getStickyBit()) {
return;
}
// If this user is the directory owner, return
if(parent.getUserName(snapshot).equals(user)) {
if(parent.getUserName(snapshotId).equals(user)) {
return;
}
// if this user is the file owner, return
if(inode.getUserName(snapshot).equals(user)) {
if(inode.getUserName(snapshotId).equals(user)) {
return;
}

156
hadoop-hdfs-project/hadoop-hdfs/src/main/java/org/apache/hadoop/hdfs/server/namenode/INode.java
View File

@ -70,98 +70,101 @@ final boolean isRoot() {
}
/** Get the {@link PermissionStatus} */
abstract PermissionStatus getPermissionStatus(Snapshot snapshot);
abstract PermissionStatus getPermissionStatus(int snapshotId);
/** The same as getPermissionStatus(null). */
final PermissionStatus getPermissionStatus() {
return getPermissionStatus(null);
return getPermissionStatus(Snapshot.CURRENT_STATE_ID);
}
/**
* @param snapshot
* if it is not null, get the result from the given snapshot;
* otherwise, get the result from the current inode.
* @param snapshotId
* if it is not {@link Snapshot#CURRENT_STATE_ID}, get the result
* from the given snapshot; otherwise, get the result from the
* current inode.
* @return user name
*/
abstract String getUserName(Snapshot snapshot);
abstract String getUserName(int snapshotId);
/** The same as getUserName(null). */
/** The same as getUserName(Snapshot.CURRENT_STATE_ID). */
@Override
public final String getUserName() {
return getUserName(null);
return getUserName(Snapshot.CURRENT_STATE_ID);
}
/** Set user */
abstract void setUser(String user);
/** Set user */
final INode setUser(String user, Snapshot latest)
final INode setUser(String user, int latestSnapshotId)
throws QuotaExceededException {
final INode nodeToUpdate = recordModification(latest);
final INode nodeToUpdate = recordModification(latestSnapshotId);
nodeToUpdate.setUser(user);
return nodeToUpdate;
}
/**
* @param snapshot
* if it is not null, get the result from the given snapshot;
* otherwise, get the result from the current inode.
* @param snapshotId
* if it is not {@link Snapshot#CURRENT_STATE_ID}, get the result
* from the given snapshot; otherwise, get the result from the
* current inode.
* @return group name
*/
abstract String getGroupName(Snapshot snapshot);
abstract String getGroupName(int snapshotId);
/** The same as getGroupName(null). */
/** The same as getGroupName(Snapshot.CURRENT_STATE_ID). */
@Override
public final String getGroupName() {
return getGroupName(null);
return getGroupName(Snapshot.CURRENT_STATE_ID);
}
/** Set group */
abstract void setGroup(String group);
/** Set group */
final INode setGroup(String group, Snapshot latest)
final INode setGroup(String group, int latestSnapshotId)
throws QuotaExceededException {
final INode nodeToUpdate = recordModification(latest);
final INode nodeToUpdate = recordModification(latestSnapshotId);
nodeToUpdate.setGroup(group);
return nodeToUpdate;
}
/**
* @param snapshot
* if it is not null, get the result from the given snapshot;
* otherwise, get the result from the current inode.
* @param snapshotId
* if it is not {@link Snapshot#CURRENT_STATE_ID}, get the result
* from the given snapshot; otherwise, get the result from the
* current inode.
* @return permission.
*/
abstract FsPermission getFsPermission(Snapshot snapshot);
abstract FsPermission getFsPermission(int snapshotId);
/** The same as getFsPermission(null). */
/** The same as getFsPermission(Snapshot.CURRENT_STATE_ID). */
@Override
public final FsPermission getFsPermission() {
return getFsPermission(null);
return getFsPermission(Snapshot.CURRENT_STATE_ID);
}
/** Set the {@link FsPermission} of this {@link INode} */
abstract void setPermission(FsPermission permission);
/** Set the {@link FsPermission} of this {@link INode} */
INode setPermission(FsPermission permission, Snapshot latest)
INode setPermission(FsPermission permission, int latestSnapshotId)
throws QuotaExceededException {
final INode nodeToUpdate = recordModification(latest);
final INode nodeToUpdate = recordModification(latestSnapshotId);
nodeToUpdate.setPermission(permission);
return nodeToUpdate;
}
/**
* @return if the given snapshot is null, return this;
* otherwise return the corresponding snapshot inode.
* @return if the given snapshot id is {@link Snapshot#CURRENT_STATE_ID},
* return this; otherwise return the corresponding snapshot inode.
*/
public INodeAttributes getSnapshotINode(final Snapshot snapshot) {
public INodeAttributes getSnapshotINode(final int snapshotId) {
return this;
}
/** Is this inode in the latest snapshot? */
public final boolean isInLatestSnapshot(final Snapshot latest) {
if (latest == null) {
public final boolean isInLatestSnapshot(final int latestSnapshotId) {
if (latestSnapshotId == Snapshot.CURRENT_STATE_ID) {
return false;
}
// if parent is a reference node, parent must be a renamed node. We can
@ -173,10 +176,11 @@ public final boolean isInLatestSnapshot(final Snapshot latest) {
if (parentDir == null) { // root
return true;
}
if (!parentDir.isInLatestSnapshot(latest)) {
if (!parentDir.isInLatestSnapshot(latestSnapshotId)) {
return false;
}
final INode child = parentDir.getChild(getLocalNameBytes(), latest);
final INode child = parentDir.getChild(getLocalNameBytes(),
latestSnapshotId);
if (this == child) {
return true;
}
@ -203,21 +207,22 @@ public final boolean isAncestorDirectory(final INodeDirectory dir) {
* operation, or the snapshot belonging to the DST tree.
*
* @param latestInDst
* the latest snapshot in the DST tree above the reference node
* id of the latest snapshot in the DST tree above the reference node
* @return True: the modification should be recorded in the snapshot that
* belongs to the SRC tree. False: the modification should be
* recorded in the snapshot that belongs to the DST tree.
*/
public final boolean shouldRecordInSrcSnapshot(final Snapshot latestInDst) {
public final boolean shouldRecordInSrcSnapshot(final int latestInDst) {
Preconditions.checkState(!isReference());
if (latestInDst == null) {
if (latestInDst == Snapshot.CURRENT_STATE_ID) {
return true;
}
INodeReference withCount = getParentReference();
if (withCount != null) {
int dstSnapshotId = withCount.getParentReference().getDstSnapshotId();
if (dstSnapshotId >= latestInDst.getId()) {
if (dstSnapshotId != Snapshot.CURRENT_STATE_ID
&& dstSnapshotId >= latestInDst) {
return true;
}
}
@ -228,13 +233,14 @@ public final boolean shouldRecordInSrcSnapshot(final Snapshot latestInDst) {
* This inode is being modified. The previous version of the inode needs to
* be recorded in the latest snapshot.
*
* @param latest the latest snapshot that has been taken.
* Note that it is null if no snapshots have been taken.
* @param latestSnapshotId The id of the latest snapshot that has been taken.
* Note that it is {@link Snapshot#CURRENT_STATE_ID}
* if no snapshots have been taken.
* @return The current inode, which usually is the same object of this inode.
* However, in some cases, this inode may be replaced with a new inode
* for maintaining snapshots. The current inode is then the new inode.
*/
abstract INode recordModification(final Snapshot latest)
abstract INode recordModification(final int latestSnapshotId)
throws QuotaExceededException;
/** Check whether it's a reference. */
@ -330,12 +336,13 @@ public INodeSymlink asSymlink() {
* snapshot in its diff list. Recursively clean its children.
* </pre>
*
* @param snapshot
* The snapshot to delete. Null means to delete the current
* @param snapshotId
* The id of the snapshot to delete.
* {@link Snapshot#CURRENT_STATE_ID} means to delete the current
* file/directory.
* @param prior
* The latest snapshot before the to-be-deleted snapshot. When
* deleting a current inode, this parameter captures the latest
* @param priorSnapshotId
* The id of the latest snapshot before the to-be-deleted snapshot.
* When deleting a current inode, this parameter captures the latest
* snapshot.
* @param collectedBlocks
* blocks collected from the descents for further block
@ -345,8 +352,8 @@ public INodeSymlink asSymlink() {
* inodeMap
* @return quota usage delta when deleting a snapshot
*/
public abstract Quota.Counts cleanSubtree(final Snapshot snapshot,
Snapshot prior, BlocksMapUpdateInfo collectedBlocks,
public abstract Quota.Counts cleanSubtree(final int snapshotId,
int priorSnapshotId, BlocksMapUpdateInfo collectedBlocks,
List<INode> removedINodes, boolean countDiffChange)
throws QuotaExceededException;
@ -460,9 +467,10 @@ public final Quota.Counts computeQuotaUsage() {
* @param counts The subtree counts for returning.
* @param useCache Whether to use cached quota usage. Note that
* {@link WithName} node never uses cache for its subtree.
* @param lastSnapshotId {@link Snapshot#INVALID_ID} indicates the computation
* is in the current tree. Otherwise the id indicates
* the computation range for a {@link WithName} node.
* @param lastSnapshotId {@link Snapshot#CURRENT_STATE_ID} indicates the
* computation is in the current tree. Otherwise the id
* indicates the computation range for a
* {@link WithName} node.
* @return The same objects as the counts parameter.
*/
public abstract Quota.Counts computeQuotaUsage(Quota.Counts counts,
@ -470,7 +478,7 @@ public abstract Quota.Counts computeQuotaUsage(Quota.Counts counts,
public final Quota.Counts computeQuotaUsage(Quota.Counts counts,
boolean useCache) {
return computeQuotaUsage(counts, useCache, Snapshot.INVALID_ID);
return computeQuotaUsage(counts, useCache, Snapshot.CURRENT_STATE_ID);
}
/**
@ -558,21 +566,22 @@ public void clear() {
}
/**
* @param snapshot
* if it is not null, get the result from the given snapshot;
* otherwise, get the result from the current inode.
* @param snapshotId
* if it is not {@link Snapshot#CURRENT_STATE_ID}, get the result
* from the given snapshot; otherwise, get the result from the
* current inode.
* @return modification time.
*/
abstract long getModificationTime(Snapshot snapshot);
abstract long getModificationTime(int snapshotId);
/** The same as getModificationTime(null). */
/** The same as getModificationTime(Snapshot.CURRENT_STATE_ID). */
@Override
public final long getModificationTime() {
return getModificationTime(null);
return getModificationTime(Snapshot.CURRENT_STATE_ID);
}
/** Update modification time if it is larger than the current value. */
public abstract INode updateModificationTime(long mtime, Snapshot latest)
public abstract INode updateModificationTime(long mtime, int latestSnapshotId)
throws QuotaExceededException;
/** Set the last modification time of inode. */
@ -580,24 +589,25 @@ public abstract INode updateModificationTime(long mtime, Snapshot latest)
/** Set the last modification time of inode. */
public final INode setModificationTime(long modificationTime,
Snapshot latest) throws QuotaExceededException {
final INode nodeToUpdate = recordModification(latest);
int latestSnapshotId) throws QuotaExceededException {
final INode nodeToUpdate = recordModification(latestSnapshotId);
nodeToUpdate.setModificationTime(modificationTime);
return nodeToUpdate;
}
/**
* @param snapshot
* if it is not null, get the result from the given snapshot;
* otherwise, get the result from the current inode.
* @param snapshotId
* if it is not {@link Snapshot#CURRENT_STATE_ID}, get the result
* from the given snapshot; otherwise, get the result from the
* current inode.
* @return access time
*/
abstract long getAccessTime(Snapshot snapshot);
abstract long getAccessTime(int snapshotId);
/** The same as getAccessTime(null). */
/** The same as getAccessTime(Snapshot.CURRENT_STATE_ID). */
@Override
public final long getAccessTime() {
return getAccessTime(null);
return getAccessTime(Snapshot.CURRENT_STATE_ID);
}
/**
@ -608,9 +618,9 @@ public final long getAccessTime() {
/**
* Set last access time of inode.
*/
public final INode setAccessTime(long accessTime, Snapshot latest)
public final INode setAccessTime(long accessTime, int latestSnapshotId)
throws QuotaExceededException {
final INode nodeToUpdate = recordModification(latest);
final INode nodeToUpdate = recordModification(latestSnapshotId);
nodeToUpdate.setAccessTime(accessTime);
return nodeToUpdate;
}
@ -679,13 +689,15 @@ public final int hashCode() {
@VisibleForTesting
public final StringBuffer dumpTreeRecursively() {
final StringWriter out = new StringWriter();
dumpTreeRecursively(new PrintWriter(out, true), new StringBuilder(), null);
dumpTreeRecursively(new PrintWriter(out, true), new StringBuilder(),
Snapshot.CURRENT_STATE_ID);
return out.getBuffer();
}
@VisibleForTesting
public final void dumpTreeRecursively(PrintStream out) {
dumpTreeRecursively(new PrintWriter(out, true), new StringBuilder(), null);
dumpTreeRecursively(new PrintWriter(out, true), new StringBuilder(),
Snapshot.CURRENT_STATE_ID);
}
/**
@ -694,7 +706,7 @@ public final void dumpTreeRecursively(PrintStream out) {
*/
@VisibleForTesting
public void dumpTreeRecursively(PrintWriter out, StringBuilder prefix,
Snapshot snapshot) {
int snapshotId) {
out.print(prefix);
out.print(" ");
final String name = getLocalName();
@ -703,7 +715,7 @@ public void dumpTreeRecursively(PrintWriter out, StringBuilder prefix,
out.print(getObjectString());
out.print("), ");
out.print(getParentString());
out.print(", " + getPermissionStatus(snapshot));
out.print(", " + getPermissionStatus(snapshotId));
}
/**

137
hadoop-hdfs-project/hadoop-hdfs/src/main/java/org/apache/hadoop/hdfs/server/namenode/INodeDirectory.java
View File

@ -204,9 +204,9 @@ public DirectoryDiffList getDiffs() {
}
@Override
public INodeDirectoryAttributes getSnapshotINode(Snapshot snapshot) {
public INodeDirectoryAttributes getSnapshotINode(int snapshotId) {
DirectoryWithSnapshotFeature sf = getDirectoryWithSnapshotFeature();
return sf == null ? this : sf.getDiffs().getSnapshotINode(snapshot, this);
return sf == null ? this : sf.getDiffs().getSnapshotINode(snapshotId, this);
}
@Override
@ -217,12 +217,13 @@ public String toDetailString() {
/** Replace itself with an {@link INodeDirectorySnapshottable}. */
public INodeDirectorySnapshottable replaceSelf4INodeDirectorySnapshottable(
Snapshot latest, final INodeMap inodeMap) throws QuotaExceededException {
int latestSnapshotId, final INodeMap inodeMap)
throws QuotaExceededException {
Preconditions.checkState(!(this instanceof INodeDirectorySnapshottable),
"this is already an INodeDirectorySnapshottable, this=%s", this);
final INodeDirectorySnapshottable s = new INodeDirectorySnapshottable(this);
replaceSelf(s, inodeMap).getDirectoryWithSnapshotFeature().getDiffs()
.saveSelf2Snapshot(latest, s, this);
.saveSelf2Snapshot(latestSnapshotId, s, this);
return s;
}
@ -289,8 +290,8 @@ public void replaceChild(INode oldChild, final INode newChild,
}
INodeReference.WithName replaceChild4ReferenceWithName(INode oldChild,
Snapshot latest) {
Preconditions.checkArgument(latest != null);
int latestSnapshotId) {
Preconditions.checkArgument(latestSnapshotId != Snapshot.CURRENT_STATE_ID);
if (oldChild instanceof INodeReference.WithName) {
return (INodeReference.WithName)oldChild;
}
@ -304,22 +305,23 @@ INodeReference.WithName replaceChild4ReferenceWithName(INode oldChild,
withCount = new INodeReference.WithCount(null, oldChild);
}
final INodeReference.WithName ref = new INodeReference.WithName(this,
withCount, oldChild.getLocalNameBytes(), latest.getId());
withCount, oldChild.getLocalNameBytes(), latestSnapshotId);
replaceChild(oldChild, ref, null);
return ref;
}
@Override
public INodeDirectory recordModification(Snapshot latest)
public INodeDirectory recordModification(int latestSnapshotId)
throws QuotaExceededException {
if (isInLatestSnapshot(latest) && !shouldRecordInSrcSnapshot(latest)) {
if (isInLatestSnapshot(latestSnapshotId)
&& !shouldRecordInSrcSnapshot(latestSnapshotId)) {
// add snapshot feature if necessary
DirectoryWithSnapshotFeature sf = getDirectoryWithSnapshotFeature();
if (sf == null) {
sf = addSnapshotFeature(null);
}
// record self in the diff list if necessary
sf.getDiffs().saveSelf2Snapshot(latest, this, null);
sf.getDiffs().saveSelf2Snapshot(latestSnapshotId, this, null);
}
return this;
}
@ -329,9 +331,9 @@ public INodeDirectory recordModification(Snapshot latest)
*
* @return the child inode, which may be replaced.
*/
public INode saveChild2Snapshot(final INode child, final Snapshot latest,
public INode saveChild2Snapshot(final INode child, final int latestSnapshotId,
final INode snapshotCopy) throws QuotaExceededException {
if (latest == null) {
if (latestSnapshotId == Snapshot.CURRENT_STATE_ID) {
return child;
}
@ -340,42 +342,45 @@ public INode saveChild2Snapshot(final INode child, final Snapshot latest,
if (sf == null) {
sf = this.addSnapshotFeature(null);
}
return sf.saveChild2Snapshot(this, child, latest, snapshotCopy);
return sf.saveChild2Snapshot(this, child, latestSnapshotId, snapshotCopy);
}
/**
* @param name the name of the child
* @param snapshot
* if it is not null, get the result from the given snapshot;
* otherwise, get the result from the current directory.
* @param snapshotId
* if it is not {@link Snapshot#CURRENT_STATE_ID}, get the result
* from the corresponding snapshot; otherwise, get the result from
* the current directory.
* @return the child inode.
*/
public INode getChild(byte[] name, Snapshot snapshot) {
public INode getChild(byte[] name, int snapshotId) {
DirectoryWithSnapshotFeature sf;
if (snapshot == null || (sf = getDirectoryWithSnapshotFeature()) == null) {
if (snapshotId == Snapshot.CURRENT_STATE_ID ||
(sf = getDirectoryWithSnapshotFeature()) == null) {
ReadOnlyList<INode> c = getCurrentChildrenList();
final int i = ReadOnlyList.Util.binarySearch(c, name);
return i < 0 ? null : c.get(i);
}
return sf.getChild(this, name, snapshot);
return sf.getChild(this, name, snapshotId);
}
/**
* @param snapshot
* if it is not null, get the result from the given snapshot;
* otherwise, get the result from the current directory.
* @param snapshotId
* if it is not {@link Snapshot#CURRENT_STATE_ID}, get the result
* from the corresponding 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) {
public ReadOnlyList<INode> getChildrenList(final int snapshotId) {
DirectoryWithSnapshotFeature sf;
if (snapshot == null
if (snapshotId == Snapshot.CURRENT_STATE_ID
|| (sf = this.getDirectoryWithSnapshotFeature()) == null) {
return getCurrentChildrenList();
}
return sf.getChildrenList(this, snapshot);
return sf.getChildrenList(this, snapshotId);
}
private ReadOnlyList<INode> getCurrentChildrenList() {
@ -450,15 +455,15 @@ static int nextChild(ReadOnlyList<INode> children, byte[] name) {
/**
* Remove the specified child from this directory.
*/
public boolean removeChild(INode child, Snapshot latest)
public boolean removeChild(INode child, int latestSnapshotId)
throws QuotaExceededException {
if (isInLatestSnapshot(latest)) {
if (isInLatestSnapshot(latestSnapshotId)) {
// create snapshot feature if necessary
DirectoryWithSnapshotFeature sf = this.getDirectoryWithSnapshotFeature();
if (sf == null) {
sf = this.addSnapshotFeature(null);
}
return sf.removeChild(this, child, latest);
return sf.removeChild(this, child, latestSnapshotId);
}
return removeChild(child);
}
@ -493,24 +498,24 @@ public boolean removeChild(final INode child) {
* otherwise, return true;
*/
public boolean addChild(INode node, final boolean setModTime,
final Snapshot latest) throws QuotaExceededException {
final int latestSnapshotId) throws QuotaExceededException {
final int low = searchChildren(node.getLocalNameBytes());
if (low >= 0) {
return false;
}
if (isInLatestSnapshot(latest)) {
if (isInLatestSnapshot(latestSnapshotId)) {
// create snapshot feature if necessary
DirectoryWithSnapshotFeature sf = this.getDirectoryWithSnapshotFeature();
if (sf == null) {
sf = this.addSnapshotFeature(null);
}
return sf.addChild(this, node, setModTime, latest);
return sf.addChild(this, node, setModTime, latestSnapshotId);
}
addChild(node, low);
if (setModTime) {
// update modification time of the parent directory
updateModificationTime(node.getModificationTime(), latest);
updateModificationTime(node.getModificationTime(), latestSnapshotId);
}
return true;
}
@ -548,10 +553,9 @@ public Quota.Counts computeQuotaUsage(Quota.Counts counts, boolean useCache,
// we are computing the quota usage for a specific snapshot here, i.e., the
// computation only includes files/directories that exist at the time of the
// given snapshot
if (sf != null && lastSnapshotId != Snapshot.INVALID_ID
if (sf != null && lastSnapshotId != Snapshot.CURRENT_STATE_ID
&& !(useCache && isQuotaSet())) {
Snapshot lastSnapshot = sf.getDiffs().getSnapshotById(lastSnapshotId);
ReadOnlyList<INode> childrenList = getChildrenList(lastSnapshot);
ReadOnlyList<INode> childrenList = getChildrenList(lastSnapshotId);
for (INode child : childrenList) {
child.computeQuotaUsage(counts, useCache, lastSnapshotId);
}
@ -607,7 +611,7 @@ public ContentSummaryComputationContext computeContentSummary(
ContentSummaryComputationContext computeDirectoryContentSummary(
ContentSummaryComputationContext summary) {
ReadOnlyList<INode> childrenList = getChildrenList(null);
ReadOnlyList<INode> childrenList = getChildrenList(Snapshot.CURRENT_STATE_ID);
// Explicit traversing is done to enable repositioning after relinquishing
// and reacquiring locks.
for (int i = 0; i < childrenList.size(); i++) {
@ -629,7 +633,7 @@ ContentSummaryComputationContext computeDirectoryContentSummary(
break;
}
// Obtain the children list again since it may have been modified.
childrenList = getChildrenList(null);
childrenList = getChildrenList(Snapshot.CURRENT_STATE_ID);
// Reposition in case the children list is changed. Decrement by 1
// since it will be incremented when loops.
i = nextChild(childrenList, childName) - 1;
@ -668,21 +672,16 @@ ContentSummaryComputationContext computeDirectoryContentSummary(
* The reference node to be removed/replaced
* @param newChild
* The node to be added back
* @param latestSnapshot
* The latest snapshot. Note this may not be the last snapshot in the
* diff list, since the src tree of the current rename operation
* may be the dst tree of a previous rename.
* @throws QuotaExceededException should not throw this exception
*/
public void undoRename4ScrParent(final INodeReference oldChild,
final INode newChild, Snapshot latestSnapshot)
throws QuotaExceededException {
final INode newChild) throws QuotaExceededException {
DirectoryWithSnapshotFeature sf = getDirectoryWithSnapshotFeature();
Preconditions.checkState(sf != null,
"Directory does not have snapshot feature");
sf.getDiffs().removeChild(ListType.DELETED, oldChild);
sf.getDiffs().replaceChild(ListType.CREATED, oldChild, newChild);
addChild(newChild, true, null);
addChild(newChild, true, Snapshot.CURRENT_STATE_ID);
}
/**
@ -691,16 +690,14 @@ public void undoRename4ScrParent(final INodeReference oldChild,
* and delete possible record in the deleted list.
*/
public void undoRename4DstParent(final INode deletedChild,
Snapshot latestSnapshot) throws QuotaExceededException {
int latestSnapshotId) throws QuotaExceededException {
DirectoryWithSnapshotFeature sf = getDirectoryWithSnapshotFeature();
Preconditions.checkState(sf != null,
"Directory does not have snapshot feature");
boolean removeDeletedChild = sf.getDiffs().removeChild(ListType.DELETED,
deletedChild);
// pass null for inodeMap since the parent node will not get replaced when
// undoing rename
final boolean added = addChild(deletedChild, true, removeDeletedChild ? null
: latestSnapshot);
int sid = removeDeletedChild ? Snapshot.CURRENT_STATE_ID : latestSnapshotId;
final boolean added = addChild(deletedChild, true, sid);
// update quota usage if adding is successfully and the old child has not
// been stored in deleted list before
if (added && !removeDeletedChild) {
@ -722,8 +719,8 @@ public void clear() {
}
/** Call cleanSubtree(..) recursively down the subtree. */
public Quota.Counts cleanSubtreeRecursively(final Snapshot snapshot,
Snapshot prior, final BlocksMapUpdateInfo collectedBlocks,
public Quota.Counts cleanSubtreeRecursively(final int snapshot,
int prior, final BlocksMapUpdateInfo collectedBlocks,
final List<INode> removedINodes, final Map<INode, INode> excludedNodes,
final boolean countDiffChange) throws QuotaExceededException {
Quota.Counts counts = Quota.Counts.newInstance();
@ -732,9 +729,10 @@ public Quota.Counts cleanSubtreeRecursively(final Snapshot snapshot,
// to its latest previous snapshot. (besides, we also need to consider nodes
// created after prior but before snapshot. this will be done in
// DirectoryWithSnapshotFeature)
Snapshot s = snapshot != null && prior != null ? prior : snapshot;
int s = snapshot != Snapshot.CURRENT_STATE_ID
&& prior != Snapshot.NO_SNAPSHOT_ID ? prior : snapshot;
for (INode child : getChildrenList(s)) {
if (snapshot != null && excludedNodes != null
if (snapshot != Snapshot.CURRENT_STATE_ID && excludedNodes != null
&& excludedNodes.containsKey(child)) {
continue;
} else {
@ -753,7 +751,7 @@ public void destroyAndCollectBlocks(final BlocksMapUpdateInfo collectedBlocks,
if (sf != null) {
sf.clear(this, collectedBlocks, removedINodes);
}
for (INode child : getChildrenList(null)) {
for (INode child : getChildrenList(Snapshot.CURRENT_STATE_ID)) {
child.destroyAndCollectBlocks(collectedBlocks, removedINodes);
}
clear();
@ -761,18 +759,19 @@ public void destroyAndCollectBlocks(final BlocksMapUpdateInfo collectedBlocks,
}
@Override
public Quota.Counts cleanSubtree(final Snapshot snapshot, Snapshot prior,
public Quota.Counts cleanSubtree(final int snapshotId, int priorSnapshotId,
final BlocksMapUpdateInfo collectedBlocks,
final List<INode> removedINodes, final boolean countDiffChange)
throws QuotaExceededException {
DirectoryWithSnapshotFeature sf = getDirectoryWithSnapshotFeature();
// there is snapshot data
if (sf != null) {
return sf.cleanDirectory(this, snapshot, prior, collectedBlocks,
removedINodes, countDiffChange);
return sf.cleanDirectory(this, snapshotId, priorSnapshotId,
collectedBlocks, removedINodes, countDiffChange);
}
// there is no snapshot data
if (prior == null && snapshot == null) {
if (priorSnapshotId == Snapshot.NO_SNAPSHOT_ID
&& snapshotId == Snapshot.CURRENT_STATE_ID) {
// destroy the whole subtree and collect blocks that should be deleted
Quota.Counts counts = Quota.Counts.newInstance();
this.computeQuotaUsage(counts, true);
@ -780,7 +779,7 @@ public Quota.Counts cleanSubtree(final Snapshot snapshot, Snapshot prior,
return counts;
} else {
// process recursively down the subtree
Quota.Counts counts = cleanSubtreeRecursively(snapshot, prior,
Quota.Counts counts = cleanSubtreeRecursively(snapshotId, priorSnapshotId,
collectedBlocks, removedINodes, null, countDiffChange);
if (isQuotaSet()) {
getDirectoryWithQuotaFeature().addSpaceConsumed2Cache(
@ -816,7 +815,7 @@ && getQuotaCounts().equals(other.getQuotaCounts())
@VisibleForTesting
@Override
public void dumpTreeRecursively(PrintWriter out, StringBuilder prefix,
final Snapshot snapshot) {
final int snapshot) {
super.dumpTreeRecursively(out, prefix, snapshot);
out.print(", childrenSize=" + getChildrenList(snapshot).size());
final DirectoryWithQuotaFeature q = getDirectoryWithQuotaFeature();
@ -824,7 +823,7 @@ public void dumpTreeRecursively(PrintWriter out, StringBuilder prefix,
out.print(", " + q);
}
if (this instanceof Snapshot.Root) {
out.print(", snapshotId=" + snapshot.getId());
out.print(", snapshotId=" + snapshot);
}
out.println();
@ -869,7 +868,7 @@ protected static void dumpTreeRecursively(PrintWriter out,
for(final Iterator<SnapshotAndINode> i = subs.iterator(); i.hasNext();) {
final SnapshotAndINode pair = i.next();
prefix.append(i.hasNext()? DUMPTREE_EXCEPT_LAST_ITEM: DUMPTREE_LAST_ITEM);
pair.inode.dumpTreeRecursively(out, prefix, pair.snapshot);
pair.inode.dumpTreeRecursively(out, prefix, pair.snapshotId);
prefix.setLength(prefix.length() - 2);
}
}
@ -877,20 +876,16 @@ protected static void dumpTreeRecursively(PrintWriter out,
/** A pair of Snapshot and INode objects. */
protected static class SnapshotAndINode {
public final Snapshot snapshot;
public final int snapshotId;
public final INode inode;
public SnapshotAndINode(Snapshot snapshot, INode inode) {
this.snapshot = snapshot;
public SnapshotAndINode(int snapshot, INode inode) {
this.snapshotId = snapshot;
this.inode = inode;
}
public SnapshotAndINode(Snapshot snapshot) {
this(snapshot, snapshot.getRoot());
}
}
public final int getChildrenNum(final Snapshot snapshot) {
return getChildrenList(snapshot).size();
public final int getChildrenNum(final int snapshotId) {
return getChildrenList(snapshotId).size();
}
}

74
hadoop-hdfs-project/hadoop-hdfs/src/main/java/org/apache/hadoop/hdfs/server/namenode/INodeFile.java
View File

@ -17,6 +17,9 @@
*/
package org.apache.hadoop.hdfs.server.namenode;
import static org.apache.hadoop.hdfs.server.namenode.snapshot.Snapshot.CURRENT_STATE_ID;
import static org.apache.hadoop.hdfs.server.namenode.snapshot.Snapshot.NO_SNAPSHOT_ID;
import java.io.FileNotFoundException;
import java.io.IOException;
import java.io.PrintWriter;
@ -282,26 +285,27 @@ public String toDetailString() {
}
@Override
public INodeFileAttributes getSnapshotINode(final Snapshot snapshot) {
public INodeFileAttributes getSnapshotINode(final int snapshotId) {
FileWithSnapshotFeature sf = this.getFileWithSnapshotFeature();
if (sf != null) {
return sf.getDiffs().getSnapshotINode(snapshot, this);
return sf.getDiffs().getSnapshotINode(snapshotId, this);
} else {
return this;
}
}
@Override
public INodeFile recordModification(final Snapshot latest)
public INodeFile recordModification(final int latestSnapshotId)
throws QuotaExceededException {
if (isInLatestSnapshot(latest) && !shouldRecordInSrcSnapshot(latest)) {
if (isInLatestSnapshot(latestSnapshotId)
&& !shouldRecordInSrcSnapshot(latestSnapshotId)) {
// the file is in snapshot, create a snapshot feature if it does not have
FileWithSnapshotFeature sf = this.getFileWithSnapshotFeature();
if (sf == null) {
sf = addSnapshotFeature(null);
}
// record self in the diff list if necessary
sf.getDiffs().saveSelf2Snapshot(latest, this, null);
sf.getDiffs().saveSelf2Snapshot(latestSnapshotId, this, null);
}
return this;
}
@ -317,23 +321,22 @@ public FileDiffList getDiffs() {
/* End of Snapshot Feature */
/** @return the replication factor of the file. */
public final short getFileReplication(Snapshot snapshot) {
if (snapshot != null) {
public final short getFileReplication(int snapshot) {
if (snapshot != CURRENT_STATE_ID) {
return getSnapshotINode(snapshot).getFileReplication();
}
return HeaderFormat.getReplication(header);
}
/** The same as getFileReplication(null). */
@Override // INodeFileAttributes
public final short getFileReplication() {
return getFileReplication(null);
return getFileReplication(CURRENT_STATE_ID);
}
@Override // BlockCollection
public short getBlockReplication() {
short max = getFileReplication(null);
short max = getFileReplication(CURRENT_STATE_ID);
FileWithSnapshotFeature sf = this.getFileWithSnapshotFeature();
if (sf != null) {
short maxInSnapshot = sf.getMaxBlockRepInDiffs();
@ -351,9 +354,10 @@ public final void setFileReplication(short replication) {
}
/** Set the replication factor of this file. */
public final INodeFile setFileReplication(short replication, Snapshot latest,
final INodeMap inodeMap) throws QuotaExceededException {
final INodeFile nodeToUpdate = recordModification(latest);
public final INodeFile setFileReplication(short replication,
int latestSnapshotId, final INodeMap inodeMap)
throws QuotaExceededException {
final INodeFile nodeToUpdate = recordModification(latestSnapshotId);
nodeToUpdate.setFileReplication(replication);
return nodeToUpdate;
}
@ -431,22 +435,22 @@ public void setBlocks(BlockInfo[] blocks) {
}
@Override
public Quota.Counts cleanSubtree(final Snapshot snapshot, Snapshot prior,
public Quota.Counts cleanSubtree(final int snapshot, int priorSnapshotId,
final BlocksMapUpdateInfo collectedBlocks,
final List<INode> removedINodes, final boolean countDiffChange)
throws QuotaExceededException {
FileWithSnapshotFeature sf = getFileWithSnapshotFeature();
if (sf != null) {
return sf.cleanFile(this, snapshot, prior, collectedBlocks,
return sf.cleanFile(this, snapshot, priorSnapshotId, collectedBlocks,
removedINodes, countDiffChange);
}
Quota.Counts counts = Quota.Counts.newInstance();
if (snapshot == null && prior == null) {
if (snapshot == CURRENT_STATE_ID && priorSnapshotId == NO_SNAPSHOT_ID) {
// this only happens when deleting the current file and the file is not
// in any snapshot
computeQuotaUsage(counts, false);
destroyAndCollectBlocks(collectedBlocks, removedINodes);
} else if (snapshot == null && prior != null) {
} else if (snapshot == CURRENT_STATE_ID && priorSnapshotId != NO_SNAPSHOT_ID) {
// when deleting the current file and the file is in snapshot, we should
// clean the 0-sized block if the file is UC
FileUnderConstructionFeature uc = getFileUnderConstructionFeature();
@ -490,17 +494,18 @@ public final Quota.Counts computeQuotaUsage(Quota.Counts counts,
FileWithSnapshotFeature sf = getFileWithSnapshotFeature();
if (sf != null) {
FileDiffList fileDiffList = sf.getDiffs();
Snapshot last = fileDiffList.getLastSnapshot();
int last = fileDiffList.getLastSnapshotId();
List<FileDiff> diffs = fileDiffList.asList();
if (lastSnapshotId == Snapshot.INVALID_ID || last == null) {
if (lastSnapshotId == Snapshot.CURRENT_STATE_ID
|| last == Snapshot.CURRENT_STATE_ID) {
nsDelta += diffs.size();
dsDelta = diskspaceConsumed();
} else if (last.getId() < lastSnapshotId) {
} else if (last < lastSnapshotId) {
dsDelta = computeFileSize(true, false) * getFileReplication();
} else {
Snapshot s = fileDiffList.getSnapshotById(lastSnapshotId);
dsDelta = diskspaceConsumed(s);
int sid = fileDiffList.getSnapshotById(lastSnapshotId);
dsDelta = diskspaceConsumed(sid);
}
} else {
dsDelta = diskspaceConsumed();
@ -511,7 +516,7 @@ public final Quota.Counts computeQuotaUsage(Quota.Counts counts,
}
@Override
public final ContentSummaryComputationContext computeContentSummary(
public final ContentSummaryComputationContext computeContentSummary(
final ContentSummaryComputationContext summary) {
computeContentSummary4Snapshot(summary.getCounts());
computeContentSummary4Current(summary.getCounts());
@ -550,23 +555,21 @@ private void computeContentSummary4Current(final Content.Counts counts) {
/** The same as computeFileSize(null). */
public final long computeFileSize() {
return computeFileSize(null);
return computeFileSize(CURRENT_STATE_ID);
}
/**
* Compute file size of the current file if the given snapshot is null;
* otherwise, get the file size from the given snapshot.
*/
public final long computeFileSize(Snapshot snapshot) {
public final long computeFileSize(int snapshotId) {
FileWithSnapshotFeature sf = this.getFileWithSnapshotFeature();
if (snapshot != null && sf != null) {
final FileDiff d = sf.getDiffs().getDiff(
snapshot);
if (snapshotId != CURRENT_STATE_ID && sf != null) {
final FileDiff d = sf.getDiffs().getDiffById(snapshotId);
if (d != null) {
return d.getFileSize();
}
}
return computeFileSize(true, false);
}
@ -617,9 +620,10 @@ public final long diskspaceConsumed() {
return computeFileSize(true, true) * getBlockReplication();
}
public final long diskspaceConsumed(Snapshot lastSnapshot) {
if (lastSnapshot != null) {
return computeFileSize(lastSnapshot) * getFileReplication(lastSnapshot);
public final long diskspaceConsumed(int lastSnapshotId) {
if (lastSnapshotId != CURRENT_STATE_ID) {
return computeFileSize(lastSnapshotId)
* getFileReplication(lastSnapshotId);
} else {
return diskspaceConsumed();
}
@ -648,9 +652,9 @@ public int numBlocks() {
@VisibleForTesting
@Override
public void dumpTreeRecursively(PrintWriter out, StringBuilder prefix,
final Snapshot snapshot) {
super.dumpTreeRecursively(out, prefix, snapshot);
out.print(", fileSize=" + computeFileSize(snapshot));
final int snapshotId) {
super.dumpTreeRecursively(out, prefix, snapshotId);
out.print(", fileSize=" + computeFileSize(snapshotId));
// only compare the first block
out.print(", blocks=");
out.print(blocks == null || blocks.length == 0? null: blocks[0]);

6
hadoop-hdfs-project/hadoop-hdfs/src/main/java/org/apache/hadoop/hdfs/server/namenode/INodeMap.java
View File

@ -23,7 +23,6 @@
import org.apache.hadoop.fs.permission.PermissionStatus;
import org.apache.hadoop.hdfs.protocol.QuotaExceededException;
import org.apache.hadoop.hdfs.server.namenode.Quota.Counts;
import org.apache.hadoop.hdfs.server.namenode.snapshot.Snapshot;
import org.apache.hadoop.util.GSet;
import org.apache.hadoop.util.LightWeightGSet;
@ -89,7 +88,8 @@ public INode get(long id) {
"", "", new FsPermission((short) 0)), 0, 0) {
@Override
INode recordModification(Snapshot latest) throws QuotaExceededException {
INode recordModification(int latestSnapshotId)
throws QuotaExceededException {
return null;
}
@ -112,7 +112,7 @@ public ContentSummaryComputationContext computeContentSummary(
}
@Override
public Counts cleanSubtree(Snapshot snapshot, Snapshot prior,
public Counts cleanSubtree(int snapshotId, int priorSnapshotId,
BlocksMapUpdateInfo collectedBlocks, List<INode> removedINodes,
boolean countDiffChange) throws QuotaExceededException {
return null;

121
hadoop-hdfs-project/hadoop-hdfs/src/main/java/org/apache/hadoop/hdfs/server/namenode/INodeReference.java
View File

@ -91,7 +91,7 @@ private static int removeReference(INodeReference ref) {
* method to identify the snapshot which is the latest snapshot before the
* reference node's creation.
*/
static Snapshot getPriorSnapshot(INodeReference ref) {
static int getPriorSnapshot(INodeReference ref) {
WithCount wc = (WithCount) ref.getReferredINode();
WithName wn = null;
if (ref instanceof DstReference) {
@ -111,7 +111,7 @@ static Snapshot getPriorSnapshot(INodeReference ref) {
}
}
}
return null;
return Snapshot.NO_SNAPSHOT_ID;
}
private INode referred;
@ -185,13 +185,13 @@ public final long getId() {
}
@Override
public final PermissionStatus getPermissionStatus(Snapshot snapshot) {
return referred.getPermissionStatus(snapshot);
public final PermissionStatus getPermissionStatus(int snapshotId) {
return referred.getPermissionStatus(snapshotId);
}
@Override
public final String getUserName(Snapshot snapshot) {
return referred.getUserName(snapshot);
public final String getUserName(int snapshotId) {
return referred.getUserName(snapshotId);
}
@Override
@ -200,8 +200,8 @@ final void setUser(String user) {
}
@Override
public final String getGroupName(Snapshot snapshot) {
return referred.getGroupName(snapshot);
public final String getGroupName(int snapshotId) {
return referred.getGroupName(snapshotId);
}
@Override
@ -210,8 +210,8 @@ final void setGroup(String group) {
}
@Override
public final FsPermission getFsPermission(Snapshot snapshot) {
return referred.getFsPermission(snapshot);
public final FsPermission getFsPermission(int snapshotId) {
return referred.getFsPermission(snapshotId);
}
@Override
public final short getFsPermissionShort() {
@ -229,14 +229,14 @@ public long getPermissionLong() {
}
@Override
public final long getModificationTime(Snapshot snapshot) {
return referred.getModificationTime(snapshot);
public final long getModificationTime(int snapshotId) {
return referred.getModificationTime(snapshotId);
}
@Override
public final INode updateModificationTime(long mtime, Snapshot latest)
public final INode updateModificationTime(long mtime, int latestSnapshotId)
throws QuotaExceededException {
return referred.updateModificationTime(mtime, latest);
return referred.updateModificationTime(mtime, latestSnapshotId);
}
@Override
@ -245,8 +245,8 @@ public final void setModificationTime(long modificationTime) {
}
@Override
public final long getAccessTime(Snapshot snapshot) {
return referred.getAccessTime(snapshot);
public final long getAccessTime(int snapshotId) {
return referred.getAccessTime(snapshotId);
}
@Override
@ -255,15 +255,15 @@ public final void setAccessTime(long accessTime) {
}
@Override
final INode recordModification(Snapshot latest)
final INode recordModification(int latestSnapshotId)
throws QuotaExceededException {
referred.recordModification(latest);
referred.recordModification(latestSnapshotId);
// reference is never replaced
return this;
}
@Override // used by WithCount
public Quota.Counts cleanSubtree(Snapshot snapshot, Snapshot prior,
public Quota.Counts cleanSubtree(int snapshot, int prior,
BlocksMapUpdateInfo collectedBlocks, final List<INode> removedINodes,
final boolean countDiffChange) throws QuotaExceededException {
return referred.cleanSubtree(snapshot, prior, collectedBlocks,
@ -291,8 +291,8 @@ public Quota.Counts computeQuotaUsage(Quota.Counts counts, boolean useCache,
}
@Override
public final INodeAttributes getSnapshotINode(Snapshot snapshot) {
return referred.getSnapshotINode(snapshot);
public final INodeAttributes getSnapshotINode(int snapshotId) {
return referred.getSnapshotINode(snapshotId);
}
@Override
@ -308,7 +308,7 @@ public final void clear() {
@Override
public void dumpTreeRecursively(PrintWriter out, StringBuilder prefix,
final Snapshot snapshot) {
final int snapshot) {
super.dumpTreeRecursively(out, prefix, snapshot);
if (this instanceof DstReference) {
out.print(", dstSnapshotId=" + ((DstReference) this).dstSnapshotId);
@ -327,7 +327,7 @@ public void dumpTreeRecursively(PrintWriter out, StringBuilder prefix,
}
public int getDstSnapshotId() {
return Snapshot.INVALID_ID;
return Snapshot.CURRENT_STATE_ID;
}
/** An anonymous reference with reference count. */
@ -457,34 +457,35 @@ public final Quota.Counts computeQuotaUsage(Quota.Counts counts,
// node happened before the rename of its ancestor. This should be
// impossible since for WithName node we only count its children at the
// time of the rename.
Preconditions.checkState(this.lastSnapshotId >= lastSnapshotId);
Preconditions.checkState(lastSnapshotId == Snapshot.CURRENT_STATE_ID
|| this.lastSnapshotId >= lastSnapshotId);
final INode referred = this.getReferredINode().asReference()
.getReferredINode();
// We will continue the quota usage computation using the same snapshot id
// as time line (if the given snapshot id is valid). Also, we cannot use
// cache for the referred node since its cached quota may have already
// been updated by changes in the current tree.
int id = lastSnapshotId > Snapshot.INVALID_ID ?
int id = lastSnapshotId != Snapshot.CURRENT_STATE_ID ?
lastSnapshotId : this.lastSnapshotId;
return referred.computeQuotaUsage(counts, false, id);
}
@Override
public Quota.Counts cleanSubtree(final Snapshot snapshot, Snapshot prior,
public Quota.Counts cleanSubtree(final int snapshot, int prior,
final BlocksMapUpdateInfo collectedBlocks,
final List<INode> removedINodes, final boolean countDiffChange)
throws QuotaExceededException {
// since WithName node resides in deleted list acting as a snapshot copy,
// the parameter snapshot must be non-null
Preconditions.checkArgument(snapshot != null);
// if prior is null, we need to check snapshot belonging to the previous
// WithName instance
if (prior == null) {
Preconditions.checkArgument(snapshot != Snapshot.CURRENT_STATE_ID);
// if prior is NO_SNAPSHOT_ID, we need to check snapshot belonging to the
// previous WithName instance
if (prior == Snapshot.NO_SNAPSHOT_ID) {
prior = getPriorSnapshot(this);
}
if (prior != null
&& Snapshot.ID_COMPARATOR.compare(snapshot, prior) <= 0) {
if (prior != Snapshot.NO_SNAPSHOT_ID
&& Snapshot.ID_INTEGER_COMPARATOR.compare(snapshot, prior) <= 0) {
return Quota.Counts.newInstance();
}
@ -496,7 +497,7 @@ public Quota.Counts cleanSubtree(final Snapshot snapshot, Snapshot prior,
-counts.get(Quota.DISKSPACE), true);
}
if (snapshot.getId() < lastSnapshotId) {
if (snapshot < lastSnapshotId) {
// for a WithName node, when we compute its quota usage, we only count
// in all the nodes existing at the time of the corresponding rename op.
// Thus if we are deleting a snapshot before/at the snapshot associated
@ -509,16 +510,16 @@ public Quota.Counts cleanSubtree(final Snapshot snapshot, Snapshot prior,
@Override
public void destroyAndCollectBlocks(BlocksMapUpdateInfo collectedBlocks,
final List<INode> removedINodes) {
Snapshot snapshot = getSelfSnapshot();
int snapshot = getSelfSnapshot();
if (removeReference(this) <= 0) {
getReferredINode().destroyAndCollectBlocks(collectedBlocks,
removedINodes);
} else {
Snapshot prior = getPriorSnapshot(this);
int prior = getPriorSnapshot(this);
INode referred = getReferredINode().asReference().getReferredINode();
if (snapshot != null) {
if (prior != null && snapshot.getId() <= prior.getId()) {
if (snapshot != Snapshot.NO_SNAPSHOT_ID) {
if (prior != Snapshot.NO_SNAPSHOT_ID && snapshot <= prior) {
// the snapshot to be deleted has been deleted while traversing
// the src tree of the previous rename operation. This usually
// happens when rename's src and dst are under the same
@ -545,9 +546,9 @@ public void destroyAndCollectBlocks(BlocksMapUpdateInfo collectedBlocks,
}
}
private Snapshot getSelfSnapshot() {
private int getSelfSnapshot() {
INode referred = getReferredINode().asReference().getReferredINode();
Snapshot snapshot = null;
int snapshot = Snapshot.NO_SNAPSHOT_ID;
if (referred.isFile() && referred.asFile().isWithSnapshot()) {
snapshot = referred.asFile().getDiffs().getPrior(lastSnapshotId);
} else if (referred.isDirectory()) {
@ -569,7 +570,7 @@ public static class DstReference extends INodeReference {
* latest snapshot. Otherwise changes will be recorded to the snapshot
* belonging to the src of the rename.
*
* {@link Snapshot#INVALID_ID} means no dstSnapshot (e.g., src of the
* {@link Snapshot#NO_SNAPSHOT_ID} means no dstSnapshot (e.g., src of the
* first-time rename).
*/
private final int dstSnapshotId;
@ -587,25 +588,27 @@ public DstReference(INodeDirectory parent, WithCount referred,
}
@Override
public Quota.Counts cleanSubtree(Snapshot snapshot, Snapshot prior,
public Quota.Counts cleanSubtree(int snapshot, int prior,
BlocksMapUpdateInfo collectedBlocks, List<INode> removedINodes,
final boolean countDiffChange) throws QuotaExceededException {
if (snapshot == null && prior == null) {
if (snapshot == Snapshot.CURRENT_STATE_ID
&& prior == Snapshot.NO_SNAPSHOT_ID) {
Quota.Counts counts = Quota.Counts.newInstance();
this.computeQuotaUsage(counts, true);
destroyAndCollectBlocks(collectedBlocks, removedINodes);
return counts;
} else {
// if prior is null, we need to check snapshot belonging to the previous
// WithName instance
if (prior == null) {
// if prior is NO_SNAPSHOT_ID, we need to check snapshot belonging to
// the previous WithName instance
if (prior == Snapshot.NO_SNAPSHOT_ID) {
prior = getPriorSnapshot(this);
}
// if prior is not null, and prior is not before the to-be-deleted
// snapshot, we can quit here and leave the snapshot deletion work to
// the src tree of rename
if (snapshot != null && prior != null
&& Snapshot.ID_COMPARATOR.compare(snapshot, prior) <= 0) {
// if prior is not NO_SNAPSHOT_ID, and prior is not before the
// to-be-deleted snapshot, we can quit here and leave the snapshot
// deletion work to the src tree of rename
if (snapshot != Snapshot.CURRENT_STATE_ID
&& prior != Snapshot.NO_SNAPSHOT_ID
&& Snapshot.ID_INTEGER_COMPARATOR.compare(snapshot, prior) <= 0) {
return Quota.Counts.newInstance();
}
return getReferredINode().cleanSubtree(snapshot, prior,
@ -632,12 +635,12 @@ public void destroyAndCollectBlocks(
} else {
// we will clean everything, including files, directories, and
// snapshots, that were created after this prior snapshot
Snapshot prior = getPriorSnapshot(this);
int prior = getPriorSnapshot(this);
// prior must be non-null, otherwise we do not have any previous
// WithName nodes, and the reference number will be 0.
Preconditions.checkState(prior != null);
Preconditions.checkState(prior != Snapshot.NO_SNAPSHOT_ID);
// identify the snapshot created after prior
Snapshot snapshot = getSelfSnapshot(prior);
int snapshot = getSelfSnapshot(prior);
INode referred = getReferredINode().asReference().getReferredINode();
if (referred.isFile()) {
@ -671,23 +674,23 @@ public void destroyAndCollectBlocks(
}
}
private Snapshot getSelfSnapshot(final Snapshot prior) {
private int getSelfSnapshot(final int prior) {
WithCount wc = (WithCount) getReferredINode().asReference();
INode referred = wc.getReferredINode();
Snapshot lastSnapshot = null;
int lastSnapshot = Snapshot.CURRENT_STATE_ID;
if (referred.isFile() && referred.asFile().isWithSnapshot()) {
lastSnapshot = referred.asFile().getDiffs().getLastSnapshot();
lastSnapshot = referred.asFile().getDiffs().getLastSnapshotId();
} else if (referred.isDirectory()) {
DirectoryWithSnapshotFeature sf = referred.asDirectory()
.getDirectoryWithSnapshotFeature();
if (sf != null) {
lastSnapshot = sf.getLastSnapshot();
lastSnapshot = sf.getLastSnapshotId();
}
}
if (lastSnapshot != null && !lastSnapshot.equals(prior)) {
if (lastSnapshot != Snapshot.CURRENT_STATE_ID && lastSnapshot != prior) {
return lastSnapshot;
} else {
return null;
return Snapshot.CURRENT_STATE_ID;
}
}
}

13
hadoop-hdfs-project/hadoop-hdfs/src/main/java/org/apache/hadoop/hdfs/server/namenode/INodeSymlink.java
View File

@ -45,10 +45,10 @@ public class INodeSymlink extends INodeWithAdditionalFields {
}
@Override
INode recordModification(Snapshot latest) throws QuotaExceededException {
if (isInLatestSnapshot(latest)) {
INode recordModification(int latestSnapshotId) throws QuotaExceededException {
if (isInLatestSnapshot(latestSnapshotId)) {
INodeDirectory parent = getParent();
parent.saveChild2Snapshot(this, latest, new INodeSymlink(this));
parent.saveChild2Snapshot(this, latestSnapshotId, new INodeSymlink(this));
}
return this;
}
@ -74,10 +74,11 @@ public byte[] getSymlink() {
}
@Override
public Quota.Counts cleanSubtree(final Snapshot snapshot, Snapshot prior,
public Quota.Counts cleanSubtree(final int snapshotId, int priorSnapshotId,
final BlocksMapUpdateInfo collectedBlocks,
final List<INode> removedINodes, final boolean countDiffChange) {
if (snapshot == null && prior == null) {
if (snapshotId == Snapshot.CURRENT_STATE_ID
&& priorSnapshotId == Snapshot.NO_SNAPSHOT_ID) {
destroyAndCollectBlocks(collectedBlocks, removedINodes);
}
return Quota.Counts.newInstance(1, 0);
@ -105,7 +106,7 @@ public ContentSummaryComputationContext computeContentSummary(
@Override
public void dumpTreeRecursively(PrintWriter out, StringBuilder prefix,
final Snapshot snapshot) {
final int snapshot) {
super.dumpTreeRecursively(out, prefix, snapshot);
out.println();
}

41
hadoop-hdfs-project/hadoop-hdfs/src/main/java/org/apache/hadoop/hdfs/server/namenode/INodeWithAdditionalFields.java
View File

@ -154,9 +154,9 @@ final void clonePermissionStatus(INodeWithAdditionalFields that) {
}
@Override
final PermissionStatus getPermissionStatus(Snapshot snapshot) {
return new PermissionStatus(getUserName(snapshot), getGroupName(snapshot),
getFsPermission(snapshot));
final PermissionStatus getPermissionStatus(int snapshotId) {
return new PermissionStatus(getUserName(snapshotId), getGroupName(snapshotId),
getFsPermission(snapshotId));
}
private final void updatePermissionStatus(PermissionStatusFormat f, long n) {
@ -164,9 +164,9 @@ private final void updatePermissionStatus(PermissionStatusFormat f, long n) {
}
@Override
final String getUserName(Snapshot snapshot) {
if (snapshot != null) {
return getSnapshotINode(snapshot).getUserName();
final String getUserName(int snapshotId) {
if (snapshotId != Snapshot.CURRENT_STATE_ID) {
return getSnapshotINode(snapshotId).getUserName();
}
int n = (int)PermissionStatusFormat.USER.retrieve(permission);
@ -180,9 +180,9 @@ final void setUser(String user) {
}
@Override
final String getGroupName(Snapshot snapshot) {
if (snapshot != null) {
return getSnapshotINode(snapshot).getGroupName();
final String getGroupName(int snapshotId) {
if (snapshotId != Snapshot.CURRENT_STATE_ID) {
return getSnapshotINode(snapshotId).getGroupName();
}
int n = (int)PermissionStatusFormat.GROUP.retrieve(permission);
@ -196,9 +196,9 @@ final void setGroup(String group) {
}
@Override
final FsPermission getFsPermission(Snapshot snapshot) {
if (snapshot != null) {
return getSnapshotINode(snapshot).getFsPermission();
final FsPermission getFsPermission(int snapshotId) {
if (snapshotId != Snapshot.CURRENT_STATE_ID) {
return getSnapshotINode(snapshotId).getFsPermission();
}
return new FsPermission(getFsPermissionShort());
@ -220,9 +220,9 @@ public long getPermissionLong() {
}
@Override
final long getModificationTime(Snapshot snapshot) {
if (snapshot != null) {
return getSnapshotINode(snapshot).getModificationTime();
final long getModificationTime(int snapshotId) {
if (snapshotId != Snapshot.CURRENT_STATE_ID) {
return getSnapshotINode(snapshotId).getModificationTime();
}
return this.modificationTime;
@ -231,13 +231,13 @@ final long getModificationTime(Snapshot snapshot) {
/** Update modification time if it is larger than the current value. */
@Override
public final INode updateModificationTime(long mtime, Snapshot latest)
public final INode updateModificationTime(long mtime, int latestSnapshotId)
throws QuotaExceededException {
Preconditions.checkState(isDirectory());
if (mtime <= modificationTime) {
return this;
}
return setModificationTime(mtime, latest);
return setModificationTime(mtime, latestSnapshotId);
}
final void cloneModificationTime(INodeWithAdditionalFields that) {
@ -250,11 +250,10 @@ public final void setModificationTime(long modificationTime) {
}
@Override
final long getAccessTime(Snapshot snapshot) {
if (snapshot != null) {
return getSnapshotINode(snapshot).getAccessTime();
final long getAccessTime(int snapshotId) {
if (snapshotId != Snapshot.CURRENT_STATE_ID) {
return getSnapshotINode(snapshotId).getAccessTime();
}
return accessTime;
}

61
hadoop-hdfs-project/hadoop-hdfs/src/main/java/org/apache/hadoop/hdfs/server/namenode/INodesInPath.java
View File

@ -135,8 +135,8 @@ static INodesInPath resolve(final INodeDirectory startingDir,
if (!isRef && isDir && dir.isWithSnapshot()) {
//if the path is a non-snapshot path, update the latest snapshot.
if (!existing.isSnapshot()) {
existing.updateLatestSnapshot(dir.getDirectoryWithSnapshotFeature()
.getLastSnapshot());
existing.updateLatestSnapshotId(dir.getDirectoryWithSnapshotFeature()
.getLastSnapshotId());
}
} else if (isRef && isDir && !lastComp) {
// If the curNode is a reference node, need to check its dstSnapshot:
@ -151,16 +151,17 @@ static INodesInPath resolve(final INodeDirectory startingDir,
// recordModification method.
if (!existing.isSnapshot()) {
int dstSnapshotId = curNode.asReference().getDstSnapshotId();
Snapshot latest = existing.getLatestSnapshot();
if (latest == null || // no snapshot in dst tree of rename
dstSnapshotId >= latest.getId()) { // the above scenario
Snapshot lastSnapshot = null;
int latest = existing.getLatestSnapshotId();
if (latest == Snapshot.CURRENT_STATE_ID || // no snapshot in dst tree of rename
(dstSnapshotId != Snapshot.CURRENT_STATE_ID &&
dstSnapshotId >= latest)) { // the above scenario
int lastSnapshot = Snapshot.CURRENT_STATE_ID;
DirectoryWithSnapshotFeature sf = null;
if (curNode.isDirectory() &&
(sf = curNode.asDirectory().getDirectoryWithSnapshotFeature()) != null) {
lastSnapshot = sf.getLastSnapshot();
lastSnapshot = sf.getLastSnapshotId();
}
existing.setSnapshot(lastSnapshot);
existing.setSnapshotId(lastSnapshot);
}
}
}
@ -206,14 +207,14 @@ static INodesInPath resolve(final INodeDirectory startingDir,
curNode = null;
} else {
curNode = s.getRoot();
existing.setSnapshot(s);
existing.setSnapshotId(s.getId());
}
if (index >= -1) {
existing.snapshotRootIndex = existing.numNonNull;
}
} else {
// normal case, and also for resolving file/dir under snapshot root
curNode = dir.getChild(childName, existing.getPathSnapshot());
curNode = dir.getChild(childName, existing.getPathSnapshotId());
}
count++;
index++;
@ -245,11 +246,12 @@ static INodesInPath resolve(final INodeDirectory startingDir,
*/
private int snapshotRootIndex;
/**
* For snapshot paths, it is the reference to the snapshot; or null if the
* snapshot does not exist. For non-snapshot paths, it is the reference to
* the latest snapshot found in the path; or null if no snapshot is found.
* For snapshot paths, it is the id of the snapshot; or
* {@link Snapshot#CURRENT_STATE_ID} if the snapshot does not exist. For
* non-snapshot paths, it is the id of the latest snapshot found in the path;
* or {@link Snapshot#CURRENT_STATE_ID} if no snapshot is found.
*/
private Snapshot snapshot = null;
private int snapshotId = Snapshot.CURRENT_STATE_ID;
private INodesInPath(byte[][] path, int number) {
this.path = path;
@ -262,29 +264,30 @@ private INodesInPath(byte[][] path, int number) {
}
/**
* For non-snapshot paths, return the latest snapshot found in the path.
* For snapshot paths, return null.
* For non-snapshot paths, return the latest snapshot id found in the path.
*/
public Snapshot getLatestSnapshot() {
return isSnapshot? null: snapshot;
public int getLatestSnapshotId() {
Preconditions.checkState(!isSnapshot);
return snapshotId;
}
/**
* For snapshot paths, return the snapshot specified in the path.
* For non-snapshot paths, return null.
* For snapshot paths, return the id of the snapshot specified in the path.
* For non-snapshot paths, return {@link Snapshot#CURRENT_STATE_ID}.
*/
public Snapshot getPathSnapshot() {
return isSnapshot? snapshot: null;
public int getPathSnapshotId() {
return isSnapshot ? snapshotId : Snapshot.CURRENT_STATE_ID;
}
private void setSnapshot(Snapshot s) {
snapshot = s;
private void setSnapshotId(int sid) {
snapshotId = sid;
}
private void updateLatestSnapshot(Snapshot s) {
if (snapshot == null
|| (s != null && Snapshot.ID_COMPARATOR.compare(snapshot, s) < 0)) {
snapshot = s;
private void updateLatestSnapshotId(int sid) {
if (snapshotId == Snapshot.CURRENT_STATE_ID
|| (sid != Snapshot.CURRENT_STATE_ID && Snapshot.ID_INTEGER_COMPARATOR
.compare(snapshotId, sid) < 0)) {
snapshotId = sid;
}
}
@ -386,7 +389,7 @@ private String toString(boolean vaildateObject) {
.append("\n capacity = ").append(capacity)
.append("\n isSnapshot = ").append(isSnapshot)
.append("\n snapshotRootIndex = ").append(snapshotRootIndex)
.append("\n snapshot = ").append(snapshot);
.append("\n snapshotId = ").append(snapshotId);
return b.toString();
}

29
hadoop-hdfs-project/hadoop-hdfs/src/main/java/org/apache/hadoop/hdfs/server/namenode/snapshot/AbstractINodeDiff.java
View File

@ -22,8 +22,8 @@
import java.util.List;
import org.apache.hadoop.hdfs.server.namenode.INode;
import org.apache.hadoop.hdfs.server.namenode.INodeAttributes;
import org.apache.hadoop.hdfs.server.namenode.INode.BlocksMapUpdateInfo;
import org.apache.hadoop.hdfs.server.namenode.INodeAttributes;
import org.apache.hadoop.hdfs.server.namenode.Quota;
import org.apache.hadoop.hdfs.server.namenode.snapshot.SnapshotFSImageFormat.ReferenceMap;
@ -52,8 +52,8 @@ abstract class AbstractINodeDiff<N extends INode,
D extends AbstractINodeDiff<N, A, D>>
implements Comparable<Integer> {
/** The snapshot will be obtained after this diff is applied. */
Snapshot snapshot;
/** The id of the corresponding snapshot. */
private int snapshotId;
/** The snapshot inode data. It is null when there is no change. */
A snapshotINode;
/**
@ -64,10 +64,8 @@ abstract class AbstractINodeDiff<N extends INode,
*/
private D posteriorDiff;
AbstractINodeDiff(Snapshot snapshot, A snapshotINode, D posteriorDiff) {
Preconditions.checkNotNull(snapshot, "snapshot is null");
this.snapshot = snapshot;
AbstractINodeDiff(int snapshotId, A snapshotINode, D posteriorDiff) {
this.snapshotId = snapshotId;
this.snapshotINode = snapshotINode;
this.posteriorDiff = posteriorDiff;
}
@ -75,16 +73,16 @@ abstract class AbstractINodeDiff<N extends INode,
/** Compare diffs with snapshot ID. */
@Override
public final int compareTo(final Integer that) {
return Snapshot.ID_INTEGER_COMPARATOR.compare(this.snapshot.getId(), that);
return Snapshot.ID_INTEGER_COMPARATOR.compare(this.snapshotId, that);
}
/** @return the snapshot object of this diff. */
public final Snapshot getSnapshot() {
return snapshot;
public final int getSnapshotId() {
return snapshotId;
}
final void setSnapshot(Snapshot snapshot) {
this.snapshot = snapshot;
final void setSnapshotId(int snapshot) {
this.snapshotId = snapshot;
}
/** @return the posterior diff. */
@ -132,13 +130,12 @@ abstract Quota.Counts destroyDiffAndCollectBlocks(final N currentINode,
@Override
public String toString() {
return getClass().getSimpleName() + ": " + snapshot + " (post="
+ (posteriorDiff == null? null: posteriorDiff.snapshot) + ")";
return getClass().getSimpleName() + ": " + snapshotId + " (post="
+ (posteriorDiff == null? null: posteriorDiff.snapshotId) + ")";
}
void writeSnapshot(DataOutput out) throws IOException {
// Assume the snapshot is recorded before, write id only.
out.writeInt(snapshot.getId());
out.writeInt(snapshotId);
}
abstract void write(DataOutput out, ReferenceMap referenceMap

100
hadoop-hdfs-project/hadoop-hdfs/src/main/java/org/apache/hadoop/hdfs/server/namenode/snapshot/AbstractINodeDiffList.java
View File

@ -53,7 +53,7 @@ public void clear() {
}
/** @return an {@link AbstractINodeDiff}. */
abstract D createDiff(Snapshot snapshot, N currentINode);
abstract D createDiff(int snapshotId, N currentINode);
/** @return a snapshot copy of the current inode. */
abstract A createSnapshotCopy(N currentINode);
@ -63,25 +63,25 @@ public void clear() {
* outside. If the diff to remove is not the first one in the diff list, we
* need to combine the diff with its previous one.
*
* @param snapshot The snapshot to be deleted
* @param prior The snapshot taken before the to-be-deleted snapshot
* @param snapshot The id of the snapshot to be deleted
* @param prior The id of the snapshot taken before the to-be-deleted snapshot
* @param collectedBlocks Used to collect information for blocksMap update
* @return delta in namespace.
*/
public final Quota.Counts deleteSnapshotDiff(final Snapshot snapshot,
Snapshot prior, final N currentINode,
public final Quota.Counts deleteSnapshotDiff(final int snapshot,
final int prior, final N currentINode,
final BlocksMapUpdateInfo collectedBlocks,
final List<INode> removedINodes, boolean countDiffChange)
throws QuotaExceededException {
int snapshotIndex = Collections.binarySearch(diffs, snapshot.getId());
int snapshotIndex = Collections.binarySearch(diffs, snapshot);
Quota.Counts counts = Quota.Counts.newInstance();
D removed = null;
if (snapshotIndex == 0) {
if (prior != null) {
if (prior != Snapshot.NO_SNAPSHOT_ID) { // there is still snapshot before
// set the snapshot to latestBefore
diffs.get(snapshotIndex).setSnapshot(prior);
} else {
diffs.get(snapshotIndex).setSnapshotId(prior);
} else { // there is no snapshot before
removed = diffs.remove(0);
if (countDiffChange) {
counts.add(Quota.NAMESPACE, 1);
@ -96,8 +96,8 @@ public final Quota.Counts deleteSnapshotDiff(final Snapshot snapshot,
}
} else if (snapshotIndex > 0) {
final AbstractINodeDiff<N, A, D> previous = diffs.get(snapshotIndex - 1);
if (!previous.getSnapshot().equals(prior)) {
diffs.get(snapshotIndex).setSnapshot(prior);
if (previous.getSnapshotId() != prior) {
diffs.get(snapshotIndex).setSnapshotId(prior);
} else {
// combine the to-be-removed diff with its previous diff
removed = diffs.remove(snapshotIndex);
@ -120,10 +120,10 @@ public final Quota.Counts deleteSnapshotDiff(final Snapshot snapshot,
}
/** Add an {@link AbstractINodeDiff} for the given snapshot. */
final D addDiff(Snapshot latest, N currentINode)
final D addDiff(int latestSnapshotId, N currentINode)
throws QuotaExceededException {
currentINode.addSpaceConsumed(1, 0, true);
return addLast(createDiff(latest, currentINode));
return addLast(createDiff(latestSnapshotId, currentINode));
}
/** Append the diff at the end of the list. */
@ -149,10 +149,10 @@ public final D getLast() {
return n == 0? null: diffs.get(n - 1);
}
/** @return the last snapshot. */
public final Snapshot getLastSnapshot() {
/** @return the id of the last snapshot. */
public final int getLastSnapshotId() {
final AbstractINodeDiff<N, A, D> last = getLast();
return last == null? null: last.getSnapshot();
return last == null ? Snapshot.CURRENT_STATE_ID : last.getSnapshotId();
}
/**
@ -161,60 +161,49 @@ public final Snapshot getLastSnapshot() {
* snapshot id.
* @param exclusive True means the returned snapshot's id must be < the given
* id, otherwise <=.
* @return The latest snapshot before the given snapshot.
* @return The id of the latest snapshot before the given snapshot.
*/
private final Snapshot getPrior(int anchorId, boolean exclusive) {
if (anchorId == Snapshot.INVALID_ID) {
return getLastSnapshot();
private final int getPrior(int anchorId, boolean exclusive) {
if (anchorId == Snapshot.CURRENT_STATE_ID) {
return getLastSnapshotId();
}
final int i = Collections.binarySearch(diffs, anchorId);
if (exclusive) { // must be the one before
if (i == -1 || i == 0) {
return null;
return Snapshot.NO_SNAPSHOT_ID;
} else {
int priorIndex = i > 0 ? i - 1 : -i - 2;
return diffs.get(priorIndex).getSnapshot();
return diffs.get(priorIndex).getSnapshotId();
}
} else { // the one, or the one before if not existing
if (i >= 0) {
return diffs.get(i).getSnapshot();
return diffs.get(i).getSnapshotId();
} else if (i < -1) {
return diffs.get(-i - 2).getSnapshot();
return diffs.get(-i - 2).getSnapshotId();
} else { // i == -1
return null;
return Snapshot.NO_SNAPSHOT_ID;
}
}
}
public final Snapshot getPrior(int snapshotId) {
public final int getPrior(int snapshotId) {
return getPrior(snapshotId, false);
}
/**
* Update the prior snapshot.
*/
final Snapshot updatePrior(Snapshot snapshot, Snapshot prior) {
int id = snapshot == null ? Snapshot.INVALID_ID : snapshot.getId();
Snapshot s = getPrior(id, true);
if (s != null &&
(prior == null || Snapshot.ID_COMPARATOR.compare(s, prior) > 0)) {
return s;
final int updatePrior(int snapshot, int prior) {
int p = getPrior(snapshot, true);
if (p != Snapshot.CURRENT_STATE_ID
&& Snapshot.ID_INTEGER_COMPARATOR.compare(p, prior) > 0) {
return p;
}
return prior;
}
/**
* @return the diff corresponding to the given snapshot.
* When the diff is null, it means that the current state and
* the corresponding snapshot state are the same.
*/
public final D getDiff(Snapshot snapshot) {
return getDiffById(snapshot == null ?
Snapshot.INVALID_ID : snapshot.getId());
}
private final D getDiffById(final int snapshotId) {
if (snapshotId == Snapshot.INVALID_ID) {
public final D getDiffById(final int snapshotId) {
if (snapshotId == Snapshot.CURRENT_STATE_ID) {
return null;
}
final int i = Collections.binarySearch(diffs, snapshotId);
@ -234,9 +223,9 @@ private final D getDiffById(final int snapshotId) {
* Search for the snapshot whose id is 1) no less than the given id,
* and 2) most close to the given id.
*/
public final Snapshot getSnapshotById(final int snapshotId) {
public final int getSnapshotById(final int snapshotId) {
D diff = getDiffById(snapshotId);
return diff == null ? null : diff.getSnapshot();
return diff == null ? Snapshot.CURRENT_STATE_ID : diff.getSnapshotId();
}
/**
@ -271,8 +260,8 @@ final boolean changedBetweenSnapshots(Snapshot earlier, Snapshot later) {
* Note that the current inode is returned if there is no change
* between the given snapshot and the current state.
*/
public A getSnapshotINode(final Snapshot snapshot, final A currentINode) {
final D diff = getDiff(snapshot);
public A getSnapshotINode(final int snapshotId, final A currentINode) {
final D diff = getDiffById(snapshotId);
final A inode = diff == null? null: diff.getSnapshotINode();
return inode == null? currentINode: inode;
}
@ -281,15 +270,16 @@ public A getSnapshotINode(final Snapshot snapshot, final A currentINode) {
* Check if the latest snapshot diff exists. If not, add it.
* @return the latest snapshot diff, which is never null.
*/
final D checkAndAddLatestSnapshotDiff(Snapshot latest, N currentINode)
final D checkAndAddLatestSnapshotDiff(int latestSnapshotId, N currentINode)
throws QuotaExceededException {
final D last = getLast();
if (last != null
&& Snapshot.ID_COMPARATOR.compare(last.getSnapshot(), latest) >= 0) {
&& Snapshot.ID_INTEGER_COMPARATOR.compare(last.getSnapshotId(),
latestSnapshotId) >= 0) {
return last;
} else {
try {
return addDiff(latest, currentINode);
return addDiff(latestSnapshotId, currentINode);
} catch(NSQuotaExceededException e) {
e.setMessagePrefix("Failed to record modification for snapshot");
throw e;
@ -298,10 +288,10 @@ final D checkAndAddLatestSnapshotDiff(Snapshot latest, N currentINode)
}
/** Save the snapshot copy to the latest snapshot. */
public void saveSelf2Snapshot(Snapshot latest, N currentINode, A snapshotCopy)
throws QuotaExceededException {
if (latest != null) {
D diff = checkAndAddLatestSnapshotDiff(latest, currentINode);
public void saveSelf2Snapshot(int latestSnapshotId, N currentINode,
A snapshotCopy) throws QuotaExceededException {
if (latestSnapshotId != Snapshot.CURRENT_STATE_ID) {
D diff = checkAndAddLatestSnapshotDiff(latestSnapshotId, currentINode);
if (diff.snapshotINode == null) {
if (snapshotCopy == null) {
snapshotCopy = createSnapshotCopy(currentINode);

136
hadoop-hdfs-project/hadoop-hdfs/src/main/java/org/apache/hadoop/hdfs/server/namenode/snapshot/DirectoryWithSnapshotFeature.java
View File

@ -225,30 +225,36 @@ public static class DirectoryDiff extends
private final int childrenSize;
/** The children list diff. */
private final ChildrenDiff diff;
private boolean isSnapshotRoot = false;
private DirectoryDiff(int snapshotId, INodeDirectory dir) {
super(snapshotId, null, null);
private DirectoryDiff(Snapshot snapshot, INodeDirectory dir) {
super(snapshot, null, null);
this.childrenSize = dir.getChildrenList(null).size();
this.childrenSize = dir.getChildrenList(Snapshot.CURRENT_STATE_ID).size();
this.diff = new ChildrenDiff();
}
/** Constructor used by FSImage loading */
DirectoryDiff(Snapshot snapshot, INodeDirectoryAttributes snapshotINode,
DirectoryDiff posteriorDiff, int childrenSize,
List<INode> createdList, List<INode> deletedList) {
super(snapshot, snapshotINode, posteriorDiff);
DirectoryDiff(int snapshotId, INodeDirectoryAttributes snapshotINode,
DirectoryDiff posteriorDiff, int childrenSize, List<INode> createdList,
List<INode> deletedList, boolean isSnapshotRoot) {
super(snapshotId, snapshotINode, posteriorDiff);
this.childrenSize = childrenSize;
this.diff = new ChildrenDiff(createdList, deletedList);
this.isSnapshotRoot = isSnapshotRoot;
}
ChildrenDiff getChildrenDiff() {
return diff;
}
/** Is the inode the root of the snapshot? */
void setSnapshotRoot(INodeDirectoryAttributes root) {
this.snapshotINode = root;
this.isSnapshotRoot = true;
}
boolean isSnapshotRoot() {
return snapshotINode == snapshot.getRoot();
return isSnapshotRoot;
}
@Override
@ -287,7 +293,7 @@ private List<INode> initChildren() {
combined.combinePosterior(d.diff, null);
}
children = combined.apply2Current(ReadOnlyList.Util.asList(
currentDir.getChildrenList(null)));
currentDir.getChildrenList(Snapshot.CURRENT_STATE_ID)));
}
return children;
}
@ -327,7 +333,7 @@ INode getChild(byte[] name, boolean checkPosterior,
return null;
} else if (d.getPosterior() == null) {
// no more posterior diff, get from current inode.
return currentDir.getChild(name, null);
return currentDir.getChild(name, Snapshot.CURRENT_STATE_ID);
}
}
}
@ -342,11 +348,9 @@ void write(DataOutput out, ReferenceMap referenceMap) throws IOException {
writeSnapshot(out);
out.writeInt(childrenSize);
// write snapshotINode
if (isSnapshotRoot()) {
out.writeBoolean(true);
} else {
out.writeBoolean(false);
// Write snapshotINode
out.writeBoolean(isSnapshotRoot);
if (!isSnapshotRoot) {
if (snapshotINode != null) {
out.writeBoolean(true);
FSImageSerialization.writeINodeDirectoryAttributes(snapshotINode, out);
@ -373,7 +377,7 @@ public static class DirectoryDiffList
extends AbstractINodeDiffList<INodeDirectory, INodeDirectoryAttributes, DirectoryDiff> {
@Override
DirectoryDiff createDiff(Snapshot snapshot, INodeDirectory currentDir) {
DirectoryDiff createDiff(int snapshot, INodeDirectory currentDir) {
return new DirectoryDiff(snapshot, currentDir);
}
@ -424,12 +428,13 @@ private static Map<INode, INode> cloneDiffList(List<INode> diffList) {
/**
* Destroy a subtree under a DstReference node.
*/
public static void destroyDstSubtree(INode inode, final Snapshot snapshot,
final Snapshot prior, final BlocksMapUpdateInfo collectedBlocks,
public static void destroyDstSubtree(INode inode, final int snapshot,
final int prior, final BlocksMapUpdateInfo collectedBlocks,
final List<INode> removedINodes) throws QuotaExceededException {
Preconditions.checkArgument(prior != null);
Preconditions.checkArgument(prior != Snapshot.NO_SNAPSHOT_ID);
if (inode.isReference()) {
if (inode instanceof INodeReference.WithName && snapshot != null) {
if (inode instanceof INodeReference.WithName
&& snapshot != Snapshot.CURRENT_STATE_ID) {
// this inode has been renamed before the deletion of the DstReference
// subtree
inode.cleanSubtree(snapshot, prior, collectedBlocks, removedINodes,
@ -447,18 +452,18 @@ public static void destroyDstSubtree(INode inode, final Snapshot snapshot,
DirectoryWithSnapshotFeature sf = dir.getDirectoryWithSnapshotFeature();
if (sf != null) {
DirectoryDiffList diffList = sf.getDiffs();
DirectoryDiff priorDiff = diffList.getDiff(prior);
if (priorDiff != null && priorDiff.getSnapshot().equals(prior)) {
DirectoryDiff priorDiff = diffList.getDiffById(prior);
if (priorDiff != null && priorDiff.getSnapshotId() == prior) {
List<INode> dList = priorDiff.diff.getList(ListType.DELETED);
excludedNodes = cloneDiffList(dList);
}
if (snapshot != null) {
if (snapshot != Snapshot.CURRENT_STATE_ID) {
diffList.deleteSnapshotDiff(snapshot, prior, dir, collectedBlocks,
removedINodes, true);
}
priorDiff = diffList.getDiff(prior);
if (priorDiff != null && priorDiff.getSnapshot().equals(prior)) {
priorDiff = diffList.getDiffById(prior);
if (priorDiff != null && priorDiff.getSnapshotId() == prior) {
priorDiff.diff.destroyCreatedList(dir, collectedBlocks,
removedINodes);
}
@ -478,14 +483,14 @@ public static void destroyDstSubtree(INode inode, final Snapshot snapshot,
* deleted list of prior.
* @param inode The inode to clean.
* @param post The post snapshot.
* @param prior The prior snapshot.
* @param prior The id of the prior snapshot.
* @param collectedBlocks Used to collect blocks for later deletion.
* @return Quota usage update.
*/
private static Quota.Counts cleanDeletedINode(INode inode,
final Snapshot post, final Snapshot prior,
final int post, final int prior,
final BlocksMapUpdateInfo collectedBlocks,
final List<INode> removedINodes, final boolean countDiffChange)
final List<INode> removedINodes, final boolean countDiffChange)
throws QuotaExceededException {
Quota.Counts counts = Quota.Counts.newInstance();
Deque<INode> queue = new ArrayDeque<INode>();
@ -494,7 +499,7 @@ private static Quota.Counts cleanDeletedINode(INode inode,
INode topNode = queue.pollFirst();
if (topNode instanceof INodeReference.WithName) {
INodeReference.WithName wn = (INodeReference.WithName) topNode;
if (wn.getLastSnapshotId() >= post.getId()) {
if (wn.getLastSnapshotId() >= post) {
wn.cleanSubtree(post, prior, collectedBlocks, removedINodes,
countDiffChange);
}
@ -511,8 +516,8 @@ private static Quota.Counts cleanDeletedINode(INode inode,
if (sf != null) {
// delete files/dirs created after prior. Note that these
// files/dirs, along with inode, were deleted right after post.
DirectoryDiff priorDiff = sf.getDiffs().getDiff(prior);
if (priorDiff != null && priorDiff.getSnapshot().equals(prior)) {
DirectoryDiff priorDiff = sf.getDiffs().getDiffById(prior);
if (priorDiff != null && priorDiff.getSnapshotId() == prior) {
priorChildrenDiff = priorDiff.getChildrenDiff();
counts.add(priorChildrenDiff.destroyCreatedList(dir,
collectedBlocks, removedINodes));
@ -540,8 +545,8 @@ public DirectoryWithSnapshotFeature(DirectoryDiffList diffs) {
}
/** @return the last snapshot. */
public Snapshot getLastSnapshot() {
return diffs.getLastSnapshot();
public int getLastSnapshotId() {
return diffs.getLastSnapshotId();
}
/** @return the snapshot diff list. */
@ -565,11 +570,13 @@ public void getSnapshotDirectory(List<INodeDirectory> snapshotDir) {
* to make sure that parent is in the given snapshot "latest".
*/
public boolean addChild(INodeDirectory parent, INode inode,
boolean setModTime, Snapshot latest) throws QuotaExceededException {
ChildrenDiff diff = diffs.checkAndAddLatestSnapshotDiff(latest, parent).diff;
boolean setModTime, int latestSnapshotId) throws QuotaExceededException {
ChildrenDiff diff = diffs.checkAndAddLatestSnapshotDiff(latestSnapshotId,
parent).diff;
int undoInfo = diff.create(inode);
final boolean added = parent.addChild(inode, setModTime, null);
final boolean added = parent.addChild(inode, setModTime,
Snapshot.CURRENT_STATE_ID);
if (!added) {
diff.undoCreate(inode, undoInfo);
}
@ -581,7 +588,7 @@ public boolean addChild(INodeDirectory parent, INode inode,
* needs to make sure that parent is in the given snapshot "latest".
*/
public boolean removeChild(INodeDirectory parent, INode child,
Snapshot latest) throws QuotaExceededException {
int latestSnapshotId) throws QuotaExceededException {
// For a directory that is not a renamed node, if isInLatestSnapshot returns
// false, the directory is not in the latest snapshot, thus we do not need
// to record the removed child in any snapshot.
@ -593,7 +600,8 @@ public boolean removeChild(INodeDirectory parent, INode child,
// directory node cannot be in any snapshot (not in current tree, nor in
// previous src tree). Thus we do not need to record the removed child in
// any snapshot.
ChildrenDiff diff = diffs.checkAndAddLatestSnapshotDiff(latest, parent).diff;
ChildrenDiff diff = diffs.checkAndAddLatestSnapshotDiff(latestSnapshotId,
parent).diff;
UndoInfo<INode> undoInfo = diff.delete(child);
final boolean removed = parent.removeChild(child);
@ -611,29 +619,29 @@ public boolean removeChild(INodeDirectory parent, INode child,
* for the snapshot and return it.
*/
public ReadOnlyList<INode> getChildrenList(INodeDirectory currentINode,
final Snapshot snapshot) {
final DirectoryDiff diff = diffs.getDiff(snapshot);
final int snapshotId) {
final DirectoryDiff diff = diffs.getDiffById(snapshotId);
return diff != null ? diff.getChildrenList(currentINode) : currentINode
.getChildrenList(null);
.getChildrenList(Snapshot.CURRENT_STATE_ID);
}
public INode getChild(INodeDirectory currentINode, byte[] name,
Snapshot snapshot) {
final DirectoryDiff diff = diffs.getDiff(snapshot);
int snapshotId) {
final DirectoryDiff diff = diffs.getDiffById(snapshotId);
return diff != null ? diff.getChild(name, true, currentINode)
: currentINode.getChild(name, null);
: currentINode.getChild(name, Snapshot.CURRENT_STATE_ID);
}
/** Used to record the modification of a symlink node */
public INode saveChild2Snapshot(INodeDirectory currentINode,
final INode child, final Snapshot latest, final INode snapshotCopy)
final INode child, final int latestSnapshotId, final INode snapshotCopy)
throws QuotaExceededException {
Preconditions.checkArgument(!child.isDirectory(),
"child is a directory, child=%s", child);
Preconditions.checkArgument(latest != null);
Preconditions.checkArgument(latestSnapshotId != Snapshot.CURRENT_STATE_ID);
final DirectoryDiff diff = diffs.checkAndAddLatestSnapshotDiff(latest,
currentINode);
final DirectoryDiff diff = diffs.checkAndAddLatestSnapshotDiff(
latestSnapshotId, currentINode);
if (diff.getChild(child.getLocalNameBytes(), false, currentINode) != null) {
// it was already saved in the latest snapshot earlier.
return child;
@ -656,7 +664,7 @@ public void clear(INodeDirectory currentINode,
public Quota.Counts computeQuotaUsage4CurrentDirectory(Quota.Counts counts) {
for(DirectoryDiff d : diffs) {
for(INode deleted : d.getChildrenDiff().getList(ListType.DELETED)) {
deleted.computeQuotaUsage(counts, false, Snapshot.INVALID_ID);
deleted.computeQuotaUsage(counts, false, Snapshot.CURRENT_STATE_ID);
}
}
counts.add(Quota.NAMESPACE, diffs.asList().size());
@ -744,14 +752,14 @@ boolean computeDiffBetweenSnapshots(Snapshot fromSnapshot,
}
public Quota.Counts cleanDirectory(final INodeDirectory currentINode,
final Snapshot snapshot, Snapshot prior,
final int snapshot, int prior,
final BlocksMapUpdateInfo collectedBlocks,
final List<INode> removedINodes, final boolean countDiffChange)
throws QuotaExceededException {
Quota.Counts counts = Quota.Counts.newInstance();
Map<INode, INode> priorCreated = null;
Map<INode, INode> priorDeleted = null;
if (snapshot == null) { // delete the current directory
if (snapshot == Snapshot.CURRENT_STATE_ID) { // delete the current directory
currentINode.recordModification(prior);
// delete everything in created list
DirectoryDiff lastDiff = diffs.getLast();
@ -764,9 +772,9 @@ public Quota.Counts cleanDirectory(final INodeDirectory currentINode,
prior = getDiffs().updatePrior(snapshot, prior);
// if there is a snapshot diff associated with prior, we need to record
// its original created and deleted list before deleting post
if (prior != null) {
DirectoryDiff priorDiff = this.getDiffs().getDiff(prior);
if (priorDiff != null && priorDiff.getSnapshot().equals(prior)) {
if (prior != Snapshot.NO_SNAPSHOT_ID) {
DirectoryDiff priorDiff = this.getDiffs().getDiffById(prior);
if (priorDiff != null && priorDiff.getSnapshotId() == prior) {
List<INode> cList = priorDiff.diff.getList(ListType.CREATED);
List<INode> dList = priorDiff.diff.getList(ListType.DELETED);
priorCreated = cloneDiffList(cList);
@ -774,13 +782,13 @@ public Quota.Counts cleanDirectory(final INodeDirectory currentINode,
}
}
counts.add(getDiffs().deleteSnapshotDiff(snapshot, prior, currentINode,
collectedBlocks, removedINodes, countDiffChange));
counts.add(getDiffs().deleteSnapshotDiff(snapshot, prior,
currentINode, collectedBlocks, removedINodes, countDiffChange));
// check priorDiff again since it may be created during the diff deletion
if (prior != null) {
DirectoryDiff priorDiff = this.getDiffs().getDiff(prior);
if (priorDiff != null && priorDiff.getSnapshot().equals(prior)) {
if (prior != Snapshot.NO_SNAPSHOT_ID) {
DirectoryDiff priorDiff = this.getDiffs().getDiffById(prior);
if (priorDiff != null && priorDiff.getSnapshotId() == prior) {
// For files/directories created between "prior" and "snapshot",
// we need to clear snapshot copies for "snapshot". Note that we must
// use null as prior in the cleanSubtree call. Files/directories that
@ -791,8 +799,8 @@ public Quota.Counts cleanDirectory(final INodeDirectory currentINode,
for (INode cNode : priorDiff.getChildrenDiff().getList(
ListType.CREATED)) {
if (priorCreated.containsKey(cNode)) {
counts.add(cNode.cleanSubtree(snapshot, null, collectedBlocks,
removedINodes, countDiffChange));
counts.add(cNode.cleanSubtree(snapshot, Snapshot.NO_SNAPSHOT_ID,
collectedBlocks, removedINodes, countDiffChange));
}
}
}

8
hadoop-hdfs-project/hadoop-hdfs/src/main/java/org/apache/hadoop/hdfs/server/namenode/snapshot/FileDiff.java
View File

@ -38,15 +38,15 @@ public class FileDiff extends
/** The file size at snapshot creation time. */
private final long fileSize;
FileDiff(Snapshot snapshot, INodeFile file) {
super(snapshot, null, null);
FileDiff(int snapshotId, INodeFile file) {
super(snapshotId, null, null);
fileSize = file.computeFileSize();
}
/** Constructor used by FSImage loading */
FileDiff(Snapshot snapshot, INodeFileAttributes snapshotINode,
FileDiff(int snapshotId, INodeFileAttributes snapshotINode,
FileDiff posteriorDiff, long fileSize) {
super(snapshot, snapshotINode, posteriorDiff);
super(snapshotId, snapshotINode, posteriorDiff);
this.fileSize = fileSize;
}

4
hadoop-hdfs-project/hadoop-hdfs/src/main/java/org/apache/hadoop/hdfs/server/namenode/snapshot/FileDiffList.java
View File

@ -25,8 +25,8 @@ public class FileDiffList extends
AbstractINodeDiffList<INodeFile, INodeFileAttributes, FileDiff> {
@Override
FileDiff createDiff(Snapshot snapshot, INodeFile file) {
return new FileDiff(snapshot, file);
FileDiff createDiff(int snapshotId, INodeFile file) {
return new FileDiff(snapshotId, file);
}
@Override

14
hadoop-hdfs-project/hadoop-hdfs/src/main/java/org/apache/hadoop/hdfs/server/namenode/snapshot/FileWithSnapshotFeature.java
View File

@ -78,22 +78,22 @@ public String getDetailedString() {
return (isCurrentFileDeleted()? "(DELETED), ": ", ") + diffs;
}
public Quota.Counts cleanFile(final INodeFile file, final Snapshot snapshot,
Snapshot prior, final BlocksMapUpdateInfo collectedBlocks,
public Quota.Counts cleanFile(final INodeFile file, final int snapshotId,
int priorSnapshotId, final BlocksMapUpdateInfo collectedBlocks,
final List<INode> removedINodes, final boolean countDiffChange)
throws QuotaExceededException {
if (snapshot == null) {
if (snapshotId == Snapshot.CURRENT_STATE_ID) {
// delete the current file while the file has snapshot feature
if (!isCurrentFileDeleted()) {
file.recordModification(prior);
file.recordModification(priorSnapshotId);
deleteCurrentFile();
}
collectBlocksAndClear(file, collectedBlocks, removedINodes);
return Quota.Counts.newInstance();
} else { // delete the snapshot
prior = getDiffs().updatePrior(snapshot, prior);
return diffs.deleteSnapshotDiff(snapshot, prior, file, collectedBlocks,
removedINodes, countDiffChange);
priorSnapshotId = getDiffs().updatePrior(snapshotId, priorSnapshotId);
return diffs.deleteSnapshotDiff(snapshotId, priorSnapshotId, file,
collectedBlocks, removedINodes, countDiffChange);
}
}

54
hadoop-hdfs-project/hadoop-hdfs/src/main/java/org/apache/hadoop/hdfs/server/namenode/snapshot/INodeDirectorySnapshottable.java
View File

@ -206,6 +206,15 @@ public Snapshot getSnapshot(byte[] snapshotName) {
return i < 0? null: snapshotsByNames.get(i);
}
Snapshot getSnapshotById(int sid) {
for (Snapshot s : snapshotsByNames) {
if (s.getId() == sid) {
return s;
}
}
return null;
}
/** @return {@link #snapshotsByNames} as a {@link ReadOnlyList} */
public ReadOnlyList<Snapshot> getSnapshotList() {
return ReadOnlyList.Util.asReadOnlyList(snapshotsByNames);
@ -297,13 +306,14 @@ Snapshot addSnapshot(int id, String name) throws SnapshotException,
+ "snapshot with the same name \"" + Snapshot.getSnapshotName(s) + "\".");
}
final DirectoryDiff d = getDiffs().addDiff(s, this);
d.snapshotINode = s.getRoot();
final DirectoryDiff d = getDiffs().addDiff(id, this);
d.setSnapshotRoot(s.getRoot());
snapshotsByNames.add(-i - 1, s);
//set modification time
updateModificationTime(Time.now(), null);
s.getRoot().setModificationTime(getModificationTime(), null);
updateModificationTime(Time.now(), Snapshot.CURRENT_STATE_ID);
s.getRoot().setModificationTime(getModificationTime(),
Snapshot.CURRENT_STATE_ID);
return s;
}
@ -326,10 +336,10 @@ Snapshot removeSnapshot(String snapshotName,
+ ": the snapshot does not exist.");
} else {
final Snapshot snapshot = snapshotsByNames.get(i);
Snapshot prior = Snapshot.findLatestSnapshot(this, snapshot);
int prior = Snapshot.findLatestSnapshot(this, snapshot.getId());
try {
Quota.Counts counts = cleanSubtree(snapshot, prior, collectedBlocks,
removedINodes, true);
Quota.Counts counts = cleanSubtree(snapshot.getId(), prior,
collectedBlocks, removedINodes, true);
INodeDirectory parent = getParent();
if (parent != null) {
// there will not be any WithName node corresponding to the deleted
@ -425,8 +435,9 @@ private void computeDiffRecursively(INode node, List<byte[]> parentPath,
diffReport.addDirDiff(dir, relativePath, diff);
}
}
ReadOnlyList<INode> children = dir.getChildrenList(diffReport
.isFromEarlier() ? diffReport.to : diffReport.from);
ReadOnlyList<INode> children = dir.getChildrenList(
diffReport.isFromEarlier() ? Snapshot.getSnapshotId(diffReport.to) :
Snapshot.getSnapshotId(diffReport.from));
for (INode child : children) {
final byte[] name = child.getLocalNameBytes();
if (diff.searchIndex(ListType.CREATED, name) < 0
@ -454,16 +465,15 @@ private void computeDiffRecursively(INode node, List<byte[]> parentPath,
* Replace itself with {@link INodeDirectoryWithSnapshot} or
* {@link INodeDirectory} depending on the latest snapshot.
*/
INodeDirectory replaceSelf(final Snapshot latest, final INodeMap inodeMap)
INodeDirectory replaceSelf(final int latestSnapshotId, final INodeMap inodeMap)
throws QuotaExceededException {
if (latest == null) {
Preconditions.checkState(
getDirectoryWithSnapshotFeature().getLastSnapshot() == null,
"latest == null but getLastSnapshot() != null, this=%s", this);
if (latestSnapshotId == Snapshot.CURRENT_STATE_ID) {
Preconditions.checkState(getDirectoryWithSnapshotFeature()
.getLastSnapshotId() == Snapshot.CURRENT_STATE_ID, "this=%s", this);
}
INodeDirectory dir = replaceSelf4INodeDirectory(inodeMap);
if (latest != null) {
dir.recordModification(latest);
if (latestSnapshotId != Snapshot.CURRENT_STATE_ID) {
dir.recordModification(latestSnapshotId);
}
return dir;
}
@ -475,10 +485,10 @@ public String toDetailString() {
@Override
public void dumpTreeRecursively(PrintWriter out, StringBuilder prefix,
Snapshot snapshot) {
int snapshot) {
super.dumpTreeRecursively(out, prefix, snapshot);
if (snapshot == null) {
if (snapshot == Snapshot.CURRENT_STATE_ID) {
out.println();
out.print(prefix);
@ -494,7 +504,8 @@ public void dumpTreeRecursively(PrintWriter out, StringBuilder prefix,
n++;
}
}
Preconditions.checkState(n == snapshotsByNames.size());
Preconditions.checkState(n == snapshotsByNames.size(), "#n=" + n
+ ", snapshotsByNames.size()=" + snapshotsByNames.size());
out.print(", #snapshot=");
out.println(n);
@ -522,8 +533,9 @@ public boolean hasNext() {
@Override
public SnapshotAndINode next() {
final Snapshot s = next.snapshot;
final SnapshotAndINode pair = new SnapshotAndINode(s);
final SnapshotAndINode pair = new SnapshotAndINode(next
.getSnapshotId(), getSnapshotById(next.getSnapshotId())
.getRoot());
next = findNext();
return pair;
}

46
hadoop-hdfs-project/hadoop-hdfs/src/main/java/org/apache/hadoop/hdfs/server/namenode/snapshot/Snapshot.java
View File

@ -37,7 +37,11 @@
/** Snapshot of a sub-tree in the namesystem. */
@InterfaceAudience.Private
public class Snapshot implements Comparable<byte[]> {
public static final int INVALID_ID = -1;
/**
* This id is used to indicate the current state (vs. snapshots)
*/
public static final int CURRENT_STATE_ID = Integer.MAX_VALUE - 1;
public static final int NO_SNAPSHOT_ID = -1;
/**
* The pattern for generating the default snapshot name.
@ -61,14 +65,18 @@ public static String getSnapshotPath(String snapshottableDir,
.toString();
}
/**
* Get the name of the given snapshot.
/**
* Get the name of the given snapshot.
* @param s The given snapshot.
* @return The name of the snapshot, or an empty string if {@code s} is null
*/
static String getSnapshotName(Snapshot s) {
return s != null ? s.getRoot().getLocalName() : "";
}
public static int getSnapshotId(Snapshot s) {
return s == null ? CURRENT_STATE_ID : s.getId();
}
/**
* Compare snapshot with IDs, where null indicates the current status thus
@ -78,9 +86,8 @@ static String getSnapshotName(Snapshot s) {
= new Comparator<Snapshot>() {
@Override
public int compare(Snapshot left, Snapshot right) {
return ID_INTEGER_COMPARATOR.compare(
left == null? null: left.getId(),
right == null? null: right.getId());
return ID_INTEGER_COMPARATOR.compare(Snapshot.getSnapshotId(left),
Snapshot.getSnapshotId(right));
}
};
@ -92,12 +99,9 @@ public int compare(Snapshot left, Snapshot right) {
= new Comparator<Integer>() {
@Override
public int compare(Integer left, Integer right) {
// null means the current state, thus should be the largest
if (left == null) {
return right == null? 0: 1;
} else {
return right == null? -1: left - right;
}
// Snapshot.CURRENT_STATE_ID means the current state, thus should be the
// largest
return left - right;
}
};
@ -108,12 +112,12 @@ public int compare(Integer left, Integer right) {
* is not null).
*
* @param inode the given inode that the returned snapshot needs to cover
* @param anchor the returned snapshot should be taken before this snapshot.
* @return the latest snapshot covers the given inode and was taken before the
* the given snapshot (if it is not null).
* @param anchor the returned snapshot should be taken before this given id.
* @return id of the latest snapshot that covers the given inode and was taken
* before the the given snapshot (if it is not null).
*/
public static Snapshot findLatestSnapshot(INode inode, Snapshot anchor) {
Snapshot latest = null;
public static int findLatestSnapshot(INode inode, final int anchor) {
int latest = NO_SNAPSHOT_ID;
for(; inode != null; inode = inode.getParent()) {
if (inode.isDirectory()) {
final INodeDirectory dir = inode.asDirectory();
@ -139,13 +143,13 @@ static public class Root extends INodeDirectory {
}
@Override
public ReadOnlyList<INode> getChildrenList(Snapshot snapshot) {
return getParent().getChildrenList(snapshot);
public ReadOnlyList<INode> getChildrenList(int snapshotId) {
return getParent().getChildrenList(snapshotId);
}
@Override
public INode getChild(byte[] name, Snapshot snapshot) {
return getParent().getChild(name, snapshot);
public INode getChild(byte[] name, int snapshotId) {
return getParent().getChild(name, snapshotId);
}
@Override

13
hadoop-hdfs-project/hadoop-hdfs/src/main/java/org/apache/hadoop/hdfs/server/namenode/snapshot/SnapshotFSImageFormat.java
View File

@ -118,7 +118,7 @@ public static FileDiffList loadFileDiffList(DataInput in,
private static FileDiff loadFileDiff(FileDiff posterior, DataInput in,
FSImageFormat.Loader loader) throws IOException {
// 1. Read the full path of the Snapshot root to identify the Snapshot
// 1. Read the id of the Snapshot root to identify the Snapshot
final Snapshot snapshot = loader.getSnapshot(in);
// 2. Load file size
@ -128,7 +128,7 @@ private static FileDiff loadFileDiff(FileDiff posterior, DataInput in,
final INodeFileAttributes snapshotINode = in.readBoolean()?
loader.loadINodeFileAttributes(in): null;
return new FileDiff(snapshot, snapshotINode, posterior, fileSize);
return new FileDiff(snapshot.getId(), snapshotINode, posterior, fileSize);
}
/**
@ -149,7 +149,8 @@ private static INode loadCreated(byte[] createdNodeName,
} // else go to the next SnapshotDiff
}
// use the current child
INode currentChild = parent.getChild(createdNodeName, null);
INode currentChild = parent.getChild(createdNodeName,
Snapshot.CURRENT_STATE_ID);
if (currentChild == null) {
throw new IOException("Cannot find an INode associated with the INode "
+ DFSUtil.bytes2String(createdNodeName)
@ -295,9 +296,9 @@ private static DirectoryDiff loadDirectoryDiff(INodeDirectory parent,
// 6. Compose the SnapshotDiff
List<DirectoryDiff> diffs = parent.getDiffs().asList();
DirectoryDiff sdiff = new DirectoryDiff(snapshot, snapshotINode,
diffs.isEmpty() ? null : diffs.get(0),
childrenSize, createdList, deletedList);
DirectoryDiff sdiff = new DirectoryDiff(snapshot.getId(), snapshotINode,
diffs.isEmpty() ? null : diffs.get(0), childrenSize, createdList,
deletedList, snapshotINode == snapshot.getRoot());
return sdiff;
}

7
hadoop-hdfs-project/hadoop-hdfs/src/main/java/org/apache/hadoop/hdfs/server/namenode/snapshot/SnapshotManager.java
View File

@ -114,7 +114,7 @@ public void setSnapshottable(final String path, boolean checkNestedSnapshottable
s = (INodeDirectorySnapshottable)d;
s.setSnapshotQuota(INodeDirectorySnapshottable.SNAPSHOT_LIMIT);
} else {
s = d.replaceSelf4INodeDirectorySnapshottable(iip.getLatestSnapshot(),
s = d.replaceSelf4INodeDirectorySnapshottable(iip.getLatestSnapshotId(),
fsdir.getINodeMap());
}
addSnapshottable(s);
@ -160,7 +160,7 @@ public void resetSnapshottable(final String path) throws IOException {
if (s == fsdir.getRoot()) {
s.setSnapshotQuota(0);
} else {
s.replaceSelf(iip.getLatestSnapshot(), fsdir.getINodeMap());
s.replaceSelf(iip.getLatestSnapshotId(), fsdir.getINodeMap());
}
removeSnapshottable(s);
}
@ -324,7 +324,8 @@ public SnapshottableDirectoryStatus[] getSnapshottableDirListing(
SnapshottableDirectoryStatus status = new SnapshottableDirectoryStatus(
dir.getModificationTime(), dir.getAccessTime(),
dir.getFsPermission(), dir.getUserName(), dir.getGroupName(),
dir.getLocalNameBytes(), dir.getId(), dir.getChildrenNum(null),
dir.getLocalNameBytes(), dir.getId(),
dir.getChildrenNum(Snapshot.CURRENT_STATE_ID),
dir.getNumSnapshots(),
dir.getSnapshotQuota(), dir.getParent() == null ?
DFSUtil.EMPTY_BYTES :

3
hadoop-hdfs-project/hadoop-hdfs/src/test/java/org/apache/hadoop/hdfs/server/namenode/TestFSDirectory.java
View File

@ -29,6 +29,7 @@
import org.apache.hadoop.hdfs.DFSTestUtil;
import org.apache.hadoop.hdfs.DistributedFileSystem;
import org.apache.hadoop.hdfs.MiniDFSCluster;
import org.apache.hadoop.hdfs.server.namenode.snapshot.Snapshot;
import org.junit.After;
import org.junit.Assert;
import org.junit.Before;
@ -119,7 +120,7 @@ public void testReset() throws Exception {
fsdir.reset();
Assert.assertFalse(fsdir.isReady());
final INodeDirectory root = (INodeDirectory) fsdir.getINode("/");
Assert.assertTrue(root.getChildrenList(null).isEmpty());
Assert.assertTrue(root.getChildrenList(Snapshot.CURRENT_STATE_ID).isEmpty());
fsdir.imageLoadComplete();
Assert.assertTrue(fsdir.isReady());
}

7
hadoop-hdfs-project/hadoop-hdfs/src/test/java/org/apache/hadoop/hdfs/server/namenode/TestFSImageWithSnapshot.java
View File

@ -34,6 +34,7 @@
import org.apache.hadoop.fs.Path;
import org.apache.hadoop.fs.permission.FsPermission;
import org.apache.hadoop.hdfs.DFSTestUtil;
import org.apache.hadoop.hdfs.DFSUtil;
import org.apache.hadoop.hdfs.DistributedFileSystem;
import org.apache.hadoop.hdfs.MiniDFSCluster;
import org.apache.hadoop.hdfs.client.HdfsDataOutputStream;
@ -43,6 +44,7 @@
import org.apache.hadoop.hdfs.server.namenode.NNStorage.NameNodeFile;
import org.apache.hadoop.hdfs.server.namenode.snapshot.DirectoryWithSnapshotFeature.DirectoryDiff;
import org.apache.hadoop.hdfs.server.namenode.snapshot.INodeDirectorySnapshottable;
import org.apache.hadoop.hdfs.server.namenode.snapshot.Snapshot;
import org.apache.hadoop.hdfs.server.namenode.snapshot.SnapshotTestHelper;
import org.apache.hadoop.hdfs.util.Canceler;
import org.apache.log4j.Level;
@ -195,11 +197,12 @@ public void testSnapshotOnRoot() throws Exception {
INodeDirectorySnapshottable rootNode =
(INodeDirectorySnapshottable) fsn.dir.getINode4Write(root.toString());
assertTrue("The children list of root should be empty",
rootNode.getChildrenList(null).isEmpty());
rootNode.getChildrenList(Snapshot.CURRENT_STATE_ID).isEmpty());
// one snapshot on root: s1
List<DirectoryDiff> diffList = rootNode.getDiffs().asList();
assertEquals(1, diffList.size());
assertEquals("s1", diffList.get(0).getSnapshot().getRoot().getLocalName());
Snapshot s1 = rootNode.getSnapshot(DFSUtil.string2Bytes("s1"));
assertEquals(s1.getId(), diffList.get(0).getSnapshotId());
// check SnapshotManager's snapshottable directory list
assertEquals(1, fsn.getSnapshotManager().getNumSnapshottableDirs());

3
hadoop-hdfs-project/hadoop-hdfs/src/test/java/org/apache/hadoop/hdfs/server/namenode/TestINodeFile.java
View File

@ -60,6 +60,7 @@
import org.apache.hadoop.hdfs.protocol.LocatedBlocks;
import org.apache.hadoop.hdfs.protocol.QuotaExceededException;
import org.apache.hadoop.hdfs.server.blockmanagement.BlockInfo;
import org.apache.hadoop.hdfs.server.namenode.snapshot.Snapshot;
import org.apache.hadoop.hdfs.server.protocol.NamenodeProtocols;
import org.apache.hadoop.io.IOUtils;
import org.apache.hadoop.util.Time;
@ -781,7 +782,7 @@ private INode createTreeOfInodes(String path) throws QuotaExceededException {
}
System.out.println("Adding component " + DFSUtil.bytes2String(component));
dir = new INodeDirectory(++id, component, permstatus, 0);
prev.addChild(dir, false, null);
prev.addChild(dir, false, Snapshot.CURRENT_STATE_ID);
prev = dir;
}
return dir; // Last Inode in the chain

10
hadoop-hdfs-project/hadoop-hdfs/src/test/java/org/apache/hadoop/hdfs/server/namenode/TestSnapshotPathINodes.java
View File

@ -123,8 +123,12 @@ static void assertSnapshot(INodesInPath inodesInPath, boolean isSnapshot,
final Snapshot snapshot, int index) {
assertEquals(isSnapshot, inodesInPath.isSnapshot());
assertEquals(index, inodesInPath.getSnapshotRootIndex());
assertEquals(isSnapshot? snapshot: null, inodesInPath.getPathSnapshot());
assertEquals(isSnapshot? null: snapshot, inodesInPath.getLatestSnapshot());
assertEquals(Snapshot.getSnapshotId(isSnapshot ? snapshot : null),
inodesInPath.getPathSnapshotId());
if (!isSnapshot) {
assertEquals(Snapshot.getSnapshotId(snapshot),
inodesInPath.getLatestSnapshotId());
}
if (isSnapshot && index >= 0) {
assertEquals(Snapshot.Root.class, inodesInPath.getINodes()[index].getClass());
}
@ -424,7 +428,7 @@ public void testSnapshotPathINodesAfterModification() throws Exception {
// The modification time of the snapshot INode should be the same with the
// original INode before modification
assertEquals(modTime,
snapshotFileNode.getModificationTime(ssNodesInPath.getPathSnapshot()));
snapshotFileNode.getModificationTime(ssNodesInPath.getPathSnapshotId()));
// Check the INode for /TestSnapshot/sub1/file1 again
names = INode.getPathNames(file1.toString());

3
hadoop-hdfs-project/hadoop-hdfs/src/test/java/org/apache/hadoop/hdfs/server/namenode/snapshot/SnapshotTestHelper.java
View File

@ -270,7 +270,8 @@ static void printFile(File f) throws IOException {
public static void dumpTree2File(FSDirectory fsdir, File f) throws IOException{
final PrintWriter out = new PrintWriter(new FileWriter(f, false), true);
fsdir.getINode("/").dumpTreeRecursively(out, new StringBuilder(), null);
fsdir.getINode("/").dumpTreeRecursively(out, new StringBuilder(),
Snapshot.CURRENT_STATE_ID);
out.close();
}

8
hadoop-hdfs-project/hadoop-hdfs/src/test/java/org/apache/hadoop/hdfs/server/namenode/snapshot/TestINodeFileUnderConstructionWithSnapshot.java
View File

@ -156,7 +156,6 @@ public void testSnapshotWhileAppending() throws Exception {
INodeDirectorySnapshottable dirNode = (INodeDirectorySnapshottable) fsdir
.getINode(dir.toString());
DirectoryDiff last = dirNode.getDiffs().getLast();
Snapshot s0 = last.snapshot;
// 2. append without closing stream
out = appendFileWithoutClosing(file, BLOCKSIZE);
@ -164,7 +163,7 @@ public void testSnapshotWhileAppending() throws Exception {
// re-check nodeInDeleted_S0
dirNode = (INodeDirectorySnapshottable) fsdir.getINode(dir.toString());
assertEquals(BLOCKSIZE * 2, fileNode.computeFileSize(s0));
assertEquals(BLOCKSIZE * 2, fileNode.computeFileSize(last.getSnapshotId()));
// 3. take snapshot --> close stream
hdfs.createSnapshot(dir, "s1");
@ -175,9 +174,8 @@ public void testSnapshotWhileAppending() throws Exception {
fileNode = (INodeFile) fsdir.getINode(file.toString());
dirNode = (INodeDirectorySnapshottable) fsdir.getINode(dir.toString());
last = dirNode.getDiffs().getLast();
Snapshot s1 = last.snapshot;
assertTrue(fileNode.isWithSnapshot());
assertEquals(BLOCKSIZE * 3, fileNode.computeFileSize(s1));
assertEquals(BLOCKSIZE * 3, fileNode.computeFileSize(last.getSnapshotId()));
// 4. modify file --> append without closing stream --> take snapshot -->
// close stream
@ -187,7 +185,7 @@ public void testSnapshotWhileAppending() throws Exception {
out.close();
// re-check the size of nodeInDeleted_S1
assertEquals(BLOCKSIZE * 3, fileNode.computeFileSize(s1));
assertEquals(BLOCKSIZE * 3, fileNode.computeFileSize(last.getSnapshotId()));
}
/**

167
hadoop-hdfs-project/hadoop-hdfs/src/test/java/org/apache/hadoop/hdfs/server/namenode/snapshot/TestRenameWithSnapshots.java
View File

@ -44,6 +44,7 @@
import org.apache.hadoop.hdfs.DFSConfigKeys;
import org.apache.hadoop.hdfs.DFSOutputStream;
import org.apache.hadoop.hdfs.DFSTestUtil;
import org.apache.hadoop.hdfs.DFSUtil;
import org.apache.hadoop.hdfs.DistributedFileSystem;
import org.apache.hadoop.hdfs.MiniDFSCluster;
import org.apache.hadoop.hdfs.client.HdfsDataOutputStream.SyncFlag;
@ -72,6 +73,7 @@
import org.junit.Before;
import org.junit.Test;
import org.mockito.Mockito;
;
/** Testing rename with snapshots. */
public class TestRenameWithSnapshots {
@ -402,9 +404,11 @@ public void testRenameFileAcrossSnapshottableDirs() throws Exception {
final Path foo_s3 = SnapshotTestHelper.getSnapshotPath(sdir1, "s3",
"foo");
assertFalse(hdfs.exists(foo_s3));
INodeDirectorySnapshottable sdir2Node =
(INodeDirectorySnapshottable) fsdir.getINode(sdir2.toString());
Snapshot s2 = sdir2Node.getSnapshot(DFSUtil.string2Bytes("s2"));
INodeFile sfoo = fsdir.getINode(newfoo.toString()).asFile();
assertEquals("s2", sfoo.getDiffs().getLastSnapshot().getRoot()
.getLocalName());
assertEquals(s2.getId(), sfoo.getDiffs().getLastSnapshotId());
}
/**
@ -604,8 +608,10 @@ public void testRenameFileAndDeleteSnapshot() throws Exception {
INodeFile snode = fsdir.getINode(newfoo.toString()).asFile();
assertEquals(1, snode.getDiffs().asList().size());
assertEquals("s2", snode.getDiffs().getLastSnapshot().getRoot()
.getLocalName());
INodeDirectorySnapshottable sdir2Node =
(INodeDirectorySnapshottable) fsdir.getINode(sdir2.toString());
Snapshot s2 = sdir2Node.getSnapshot(DFSUtil.string2Bytes("s2"));
assertEquals(s2.getId(), snode.getDiffs().getLastSnapshotId());
// restart cluster
restartClusterAndCheckImage(true);
@ -758,12 +764,14 @@ public void testRenameMoreThanOnceAcrossSnapDirs() throws Exception {
assertEquals(2, fooWithCount.getReferenceCount());
INodeDirectory foo = fooWithCount.asDirectory();
assertEquals(1, foo.getDiffs().asList().size());
assertEquals("s1", foo.getDirectoryWithSnapshotFeature().getLastSnapshot()
.getRoot().getLocalName());
INodeDirectorySnapshottable sdir1Node =
(INodeDirectorySnapshottable) fsdir.getINode(sdir1.toString());
Snapshot s1 = sdir1Node.getSnapshot(DFSUtil.string2Bytes("s1"));
assertEquals(s1.getId(), foo.getDirectoryWithSnapshotFeature()
.getLastSnapshotId());
INodeFile bar1 = fsdir.getINode4Write(bar1_dir1.toString()).asFile();
assertEquals(1, bar1.getDiffs().asList().size());
assertEquals("s1", bar1.getDiffs().getLastSnapshot().getRoot()
.getLocalName());
assertEquals(s1.getId(), bar1.getDiffs().getLastSnapshotId());
INodeReference barRef = fsdir.getINode4Write(bar2_dir1.toString())
.asReference();
@ -772,8 +780,7 @@ public void testRenameMoreThanOnceAcrossSnapDirs() throws Exception {
assertEquals(2, barWithCount.getReferenceCount());
INodeFile bar = barWithCount.asFile();
assertEquals(1, bar.getDiffs().asList().size());
assertEquals("s1", bar.getDiffs().getLastSnapshot().getRoot()
.getLocalName());
assertEquals(s1.getId(), bar.getDiffs().getLastSnapshotId());
// restart the cluster and check fsimage
restartClusterAndCheckImage(true);
@ -967,6 +974,13 @@ public void testRenameMoreThanOnceAcrossSnapDirs_2() throws Exception {
hdfs.rename(bar_dir2, bar_dir1);
// check the internal details
INodeDirectorySnapshottable sdir1Node =
(INodeDirectorySnapshottable) fsdir.getINode(sdir1.toString());
INodeDirectorySnapshottable sdir2Node =
(INodeDirectorySnapshottable) fsdir.getINode(sdir2.toString());
INodeDirectorySnapshottable sdir3Node =
(INodeDirectorySnapshottable) fsdir.getINode(sdir3.toString());
INodeReference fooRef = fsdir.getINode4Write(foo_dir1.toString())
.asReference();
INodeReference.WithCount fooWithCount = (WithCount) fooRef.getReferredINode();
@ -975,16 +989,22 @@ public void testRenameMoreThanOnceAcrossSnapDirs_2() throws Exception {
INodeDirectory foo = fooWithCount.asDirectory();
List<DirectoryDiff> fooDiffs = foo.getDiffs().asList();
assertEquals(4, fooDiffs.size());
assertEquals("s2222", fooDiffs.get(3).snapshot.getRoot().getLocalName());
assertEquals("s333", fooDiffs.get(2).snapshot.getRoot().getLocalName());
assertEquals("s22", fooDiffs.get(1).snapshot.getRoot().getLocalName());
assertEquals("s1", fooDiffs.get(0).snapshot.getRoot().getLocalName());
Snapshot s2222 = sdir2Node.getSnapshot(DFSUtil.string2Bytes("s2222"));
Snapshot s333 = sdir3Node.getSnapshot(DFSUtil.string2Bytes("s333"));
Snapshot s22 = sdir2Node.getSnapshot(DFSUtil.string2Bytes("s22"));
Snapshot s1 = sdir1Node.getSnapshot(DFSUtil.string2Bytes("s1"));
assertEquals(s2222.getId(), fooDiffs.get(3).getSnapshotId());
assertEquals(s333.getId(), fooDiffs.get(2).getSnapshotId());
assertEquals(s22.getId(), fooDiffs.get(1).getSnapshotId());
assertEquals(s1.getId(), fooDiffs.get(0).getSnapshotId());
INodeFile bar1 = fsdir.getINode4Write(bar1_dir1.toString()).asFile();
List<FileDiff> bar1Diffs = bar1.getDiffs().asList();
assertEquals(3, bar1Diffs.size());
assertEquals("s333", bar1Diffs.get(2).snapshot.getRoot().getLocalName());
assertEquals("s22", bar1Diffs.get(1).snapshot.getRoot().getLocalName());
assertEquals("s1", bar1Diffs.get(0).snapshot.getRoot().getLocalName());
assertEquals(s333.getId(), bar1Diffs.get(2).getSnapshotId());
assertEquals(s22.getId(), bar1Diffs.get(1).getSnapshotId());
assertEquals(s1.getId(), bar1Diffs.get(0).getSnapshotId());
INodeReference barRef = fsdir.getINode4Write(bar_dir1.toString())
.asReference();
@ -994,10 +1014,10 @@ public void testRenameMoreThanOnceAcrossSnapDirs_2() throws Exception {
INodeFile bar = barWithCount.asFile();
List<FileDiff> barDiffs = bar.getDiffs().asList();
assertEquals(4, barDiffs.size());
assertEquals("s2222", barDiffs.get(3).snapshot.getRoot().getLocalName());
assertEquals("s333", barDiffs.get(2).snapshot.getRoot().getLocalName());
assertEquals("s22", barDiffs.get(1).snapshot.getRoot().getLocalName());
assertEquals("s1", barDiffs.get(0).snapshot.getRoot().getLocalName());
assertEquals(s2222.getId(), barDiffs.get(3).getSnapshotId());
assertEquals(s333.getId(), barDiffs.get(2).getSnapshotId());
assertEquals(s22.getId(), barDiffs.get(1).getSnapshotId());
assertEquals(s1.getId(), barDiffs.get(0).getSnapshotId());
// restart the cluster and check fsimage
restartClusterAndCheckImage(true);
@ -1033,10 +1053,10 @@ public void testRenameMoreThanOnceAcrossSnapDirs_2() throws Exception {
foo = fooWithCount.asDirectory();
fooDiffs = foo.getDiffs().asList();
assertEquals(4, fooDiffs.size());
assertEquals("s2222", fooDiffs.get(3).snapshot.getRoot().getLocalName());
assertEquals(s2222.getId(), fooDiffs.get(3).getSnapshotId());
bar1Diffs = bar1.getDiffs().asList();
assertEquals(3, bar1Diffs.size());
assertEquals("s333", bar1Diffs.get(2).snapshot.getRoot().getLocalName());
assertEquals(s333.getId(), bar1Diffs.get(2).getSnapshotId());
barRef = fsdir.getINode(bar_s2222.toString()).asReference();
barWithCount = (WithCount) barRef.getReferredINode();
@ -1044,7 +1064,7 @@ public void testRenameMoreThanOnceAcrossSnapDirs_2() throws Exception {
bar = barWithCount.asFile();
barDiffs = bar.getDiffs().asList();
assertEquals(4, barDiffs.size());
assertEquals("s2222", barDiffs.get(3).snapshot.getRoot().getLocalName());
assertEquals(s2222.getId(), barDiffs.get(3).getSnapshotId());
}
/**
@ -1164,6 +1184,9 @@ public void testRenameDirAndDeleteSnapshot_2() throws Exception {
assertTrue(hdfs.exists(bar_s2));
// check internal details
INodeDirectorySnapshottable sdir2Node =
(INodeDirectorySnapshottable) fsdir.getINode(sdir2.toString());
Snapshot s2 = sdir2Node.getSnapshot(DFSUtil.string2Bytes("s2"));
final Path foo_s2 = SnapshotTestHelper.getSnapshotPath(sdir2, "s2", "foo");
INodeReference fooRef = fsdir.getINode(foo_s2.toString()).asReference();
assertTrue(fooRef instanceof INodeReference.WithName);
@ -1172,7 +1195,7 @@ public void testRenameDirAndDeleteSnapshot_2() throws Exception {
INodeDirectory fooDir = fooWC.getReferredINode().asDirectory();
List<DirectoryDiff> diffs = fooDir.getDiffs().asList();
assertEquals(1, diffs.size());
assertEquals("s2", diffs.get(0).snapshot.getRoot().getLocalName());
assertEquals(s2.getId(), diffs.get(0).getSnapshotId());
// restart the cluster and check fsimage
restartClusterAndCheckImage(true);
@ -1260,7 +1283,7 @@ public void testRenameUndo_1() throws Exception {
INodeDirectory dir2 = fsdir.getINode4Write(sdir2.toString()).asDirectory();
INodeDirectory mockDir2 = spy(dir2);
doReturn(false).when(mockDir2).addChild((INode) anyObject(), anyBoolean(),
(Snapshot) anyObject());
Mockito.anyInt());
INodeDirectory root = fsdir.getINode4Write("/").asDirectory();
root.replaceChild(dir2, mockDir2, fsdir.getINodeMap());
@ -1271,12 +1294,14 @@ public void testRenameUndo_1() throws Exception {
// check the current internal details
INodeDirectorySnapshottable dir1Node = (INodeDirectorySnapshottable) fsdir
.getINode4Write(sdir1.toString());
ReadOnlyList<INode> dir1Children = dir1Node.getChildrenList(null);
Snapshot s1 = dir1Node.getSnapshot(DFSUtil.string2Bytes("s1"));
ReadOnlyList<INode> dir1Children = dir1Node
.getChildrenList(Snapshot.CURRENT_STATE_ID);
assertEquals(1, dir1Children.size());
assertEquals(foo.getName(), dir1Children.get(0).getLocalName());
List<DirectoryDiff> dir1Diffs = dir1Node.getDiffs().asList();
assertEquals(1, dir1Diffs.size());
assertEquals("s1", dir1Diffs.get(0).snapshot.getRoot().getLocalName());
assertEquals(s1.getId(), dir1Diffs.get(0).getSnapshotId());
// after the undo of rename, both the created and deleted list of sdir1
// should be empty
@ -1288,7 +1313,7 @@ public void testRenameUndo_1() throws Exception {
assertTrue(fooNode.isDirectory() && fooNode.asDirectory().isWithSnapshot());
List<DirectoryDiff> fooDiffs = fooNode.asDirectory().getDiffs().asList();
assertEquals(1, fooDiffs.size());
assertEquals("s1", fooDiffs.get(0).snapshot.getRoot().getLocalName());
assertEquals(s1.getId(), fooDiffs.get(0).getSnapshotId());
final Path foo_s1 = SnapshotTestHelper.getSnapshotPath(sdir1, "s1", "foo");
INode fooNode_s1 = fsdir.getINode(foo_s1.toString());
@ -1299,7 +1324,8 @@ public void testRenameUndo_1() throws Exception {
INodeDirectory dir2Node = fsdir.getINode4Write(sdir2.toString())
.asDirectory();
assertFalse(dir2Node.isWithSnapshot());
ReadOnlyList<INode> dir2Children = dir2Node.getChildrenList(null);
ReadOnlyList<INode> dir2Children = dir2Node
.getChildrenList(Snapshot.CURRENT_STATE_ID);
assertEquals(1, dir2Children.size());
assertEquals(dir2file.getName(), dir2Children.get(0).getLocalName());
}
@ -1327,7 +1353,7 @@ public void testRenameUndo_2() throws Exception {
INodeDirectory dir2 = fsdir.getINode4Write(sdir2.toString()).asDirectory();
INodeDirectory mockDir2 = spy(dir2);
doReturn(false).when(mockDir2).addChild((INode) anyObject(), anyBoolean(),
(Snapshot) anyObject());
Mockito.anyInt());
INodeDirectory root = fsdir.getINode4Write("/").asDirectory();
root.replaceChild(dir2, mockDir2, fsdir.getINodeMap());
@ -1338,12 +1364,14 @@ public void testRenameUndo_2() throws Exception {
// check the current internal details
INodeDirectorySnapshottable dir1Node = (INodeDirectorySnapshottable) fsdir
.getINode4Write(sdir1.toString());
ReadOnlyList<INode> dir1Children = dir1Node.getChildrenList(null);
Snapshot s1 = dir1Node.getSnapshot(DFSUtil.string2Bytes("s1"));
ReadOnlyList<INode> dir1Children = dir1Node
.getChildrenList(Snapshot.CURRENT_STATE_ID);
assertEquals(1, dir1Children.size());
assertEquals(foo.getName(), dir1Children.get(0).getLocalName());
List<DirectoryDiff> dir1Diffs = dir1Node.getDiffs().asList();
assertEquals(1, dir1Diffs.size());
assertEquals("s1", dir1Diffs.get(0).snapshot.getRoot().getLocalName());
assertEquals(s1.getId(), dir1Diffs.get(0).getSnapshotId());
// after the undo of rename, the created list of sdir1 should contain
// 1 element
@ -1363,7 +1391,8 @@ public void testRenameUndo_2() throws Exception {
INodeDirectory dir2Node = fsdir.getINode4Write(sdir2.toString())
.asDirectory();
assertFalse(dir2Node.isWithSnapshot());
ReadOnlyList<INode> dir2Children = dir2Node.getChildrenList(null);
ReadOnlyList<INode> dir2Children = dir2Node
.getChildrenList(Snapshot.CURRENT_STATE_ID);
assertEquals(1, dir2Children.size());
assertEquals(dir2file.getName(), dir2Children.get(0).getLocalName());
}
@ -1389,7 +1418,7 @@ public void testRenameUndo_3() throws Exception {
INodeDirectory dir3 = fsdir.getINode4Write(sdir3.toString()).asDirectory();
INodeDirectory mockDir3 = spy(dir3);
doReturn(false).when(mockDir3).addChild((INode) anyObject(), anyBoolean(),
(Snapshot) anyObject());
Mockito.anyInt());
INodeDirectory root = fsdir.getINode4Write("/").asDirectory();
root.replaceChild(dir3, mockDir3, fsdir.getINodeMap());
@ -1400,13 +1429,18 @@ public void testRenameUndo_3() throws Exception {
assertFalse(result);
// check the current internal details
INodeDirectorySnapshottable dir1Node = (INodeDirectorySnapshottable) fsdir
.getINode4Write(sdir1.toString());
Snapshot s1 = dir1Node.getSnapshot(DFSUtil.string2Bytes("s1"));
INodeDirectorySnapshottable dir2Node = (INodeDirectorySnapshottable) fsdir
.getINode4Write(sdir2.toString());
ReadOnlyList<INode> dir2Children = dir2Node.getChildrenList(null);
Snapshot s2 = dir2Node.getSnapshot(DFSUtil.string2Bytes("s2"));
ReadOnlyList<INode> dir2Children = dir2Node
.getChildrenList(Snapshot.CURRENT_STATE_ID);
assertEquals(1, dir2Children.size());
List<DirectoryDiff> dir2Diffs = dir2Node.getDiffs().asList();
assertEquals(1, dir2Diffs.size());
assertEquals("s2", Snapshot.getSnapshotName(dir2Diffs.get(0).snapshot));
assertEquals(s2.getId(), dir2Diffs.get(0).getSnapshotId());
ChildrenDiff childrenDiff = dir2Diffs.get(0).getChildrenDiff();
assertEquals(0, childrenDiff.getList(ListType.DELETED).size());
assertEquals(1, childrenDiff.getList(ListType.CREATED).size());
@ -1418,7 +1452,7 @@ public void testRenameUndo_3() throws Exception {
assertTrue(fooNode instanceof INodeReference.DstReference);
List<DirectoryDiff> fooDiffs = fooNode.asDirectory().getDiffs().asList();
assertEquals(1, fooDiffs.size());
assertEquals("s1", fooDiffs.get(0).snapshot.getRoot().getLocalName());
assertEquals(s1.getId(), fooDiffs.get(0).getSnapshotId());
// create snapshot on sdir2 and rename again
hdfs.createSnapshot(sdir2, "s3");
@ -1428,13 +1462,14 @@ public void testRenameUndo_3() throws Exception {
// check internal details again
dir2Node = (INodeDirectorySnapshottable) fsdir.getINode4Write(sdir2
.toString());
Snapshot s3 = dir2Node.getSnapshot(DFSUtil.string2Bytes("s3"));
fooNode = fsdir.getINode4Write(foo_dir2.toString());
dir2Children = dir2Node.getChildrenList(null);
dir2Children = dir2Node.getChildrenList(Snapshot.CURRENT_STATE_ID);
assertEquals(1, dir2Children.size());
dir2Diffs = dir2Node.getDiffs().asList();
assertEquals(2, dir2Diffs.size());
assertEquals("s2", Snapshot.getSnapshotName(dir2Diffs.get(0).snapshot));
assertEquals("s3", Snapshot.getSnapshotName(dir2Diffs.get(1).snapshot));
assertEquals(s2.getId(), dir2Diffs.get(0).getSnapshotId());
assertEquals(s3.getId(), dir2Diffs.get(1).getSnapshotId());
childrenDiff = dir2Diffs.get(0).getChildrenDiff();
assertEquals(0, childrenDiff.getList(ListType.DELETED).size());
@ -1452,8 +1487,8 @@ public void testRenameUndo_3() throws Exception {
assertTrue(fooNode instanceof INodeReference.DstReference);
fooDiffs = fooNode.asDirectory().getDiffs().asList();
assertEquals(2, fooDiffs.size());
assertEquals("s1", fooDiffs.get(0).snapshot.getRoot().getLocalName());
assertEquals("s3", fooDiffs.get(1).snapshot.getRoot().getLocalName());
assertEquals(s1.getId(), fooDiffs.get(0).getSnapshotId());
assertEquals(s3.getId(), fooDiffs.get(1).getSnapshotId());
}
/**
@ -1489,9 +1524,9 @@ public void testRenameUndo_4() throws Exception {
INodeDirectory mockDir3 = spy(dir3);
// fail the rename but succeed in undo
doReturn(false).when(mockDir3).addChild((INode) Mockito.isNull(),
anyBoolean(), (Snapshot) anyObject());
anyBoolean(), Mockito.anyInt());
Mockito.when(mockDir3.addChild((INode) Mockito.isNotNull(), anyBoolean(),
(Snapshot) anyObject())).thenReturn(false).thenCallRealMethod();
Mockito.anyInt())).thenReturn(false).thenCallRealMethod();
INodeDirectory root = fsdir.getINode4Write("/").asDirectory();
root.replaceChild(dir3, mockDir3, fsdir.getINodeMap());
foo3Node.setParent(mockDir3);
@ -1551,7 +1586,7 @@ public void testRenameUndo_5() throws Exception {
INodeDirectory dir1Node = fsdir.getINode4Write(dir1.toString())
.asDirectory();
List<INode> childrenList = ReadOnlyList.Util.asList(dir1Node
.getChildrenList(null));
.getChildrenList(Snapshot.CURRENT_STATE_ID));
assertEquals(1, childrenList.size());
INode fooNode = childrenList.get(0);
assertTrue(fooNode.asDirectory().isWithSnapshot());
@ -1572,7 +1607,7 @@ public void testRenameUndo_5() throws Exception {
assertEquals(3, counts.get(Quota.NAMESPACE));
assertEquals(0, counts.get(Quota.DISKSPACE));
childrenList = ReadOnlyList.Util.asList(dir2Node.asDirectory()
.getChildrenList(null));
.getChildrenList(Snapshot.CURRENT_STATE_ID));
assertEquals(1, childrenList.size());
INode subdir2Node = childrenList.get(0);
assertSame(dir2Node, subdir2Node.getParent());
@ -1627,7 +1662,7 @@ public void testRenameUndo_6() throws Exception {
INodeDirectory dir1Node = fsdir.getINode4Write(dir1.toString())
.asDirectory();
List<INode> childrenList = ReadOnlyList.Util.asList(dir1Node
.getChildrenList(null));
.getChildrenList(Snapshot.CURRENT_STATE_ID));
assertEquals(1, childrenList.size());
INode fooNode = childrenList.get(0);
assertTrue(fooNode.asDirectory().isWithSnapshot());
@ -1646,7 +1681,7 @@ public void testRenameUndo_6() throws Exception {
assertEquals(4, counts.get(Quota.NAMESPACE));
assertEquals(0, counts.get(Quota.DISKSPACE));
childrenList = ReadOnlyList.Util.asList(dir2Node.asDirectory()
.getChildrenList(null));
.getChildrenList(Snapshot.CURRENT_STATE_ID));
assertEquals(1, childrenList.size());
INode subdir2Node = childrenList.get(0);
assertTrue(subdir2Node.asDirectory().isWithSnapshot());
@ -1690,14 +1725,18 @@ public void testRenameUndo_7() throws Exception {
}
// check
INodeDirectorySnapshottable rootNode = (INodeDirectorySnapshottable) fsdir
.getINode4Write(root.toString());
INodeDirectory fooNode = fsdir.getINode4Write(foo.toString()).asDirectory();
ReadOnlyList<INode> children = fooNode.getChildrenList(null);
ReadOnlyList<INode> children = fooNode
.getChildrenList(Snapshot.CURRENT_STATE_ID);
assertEquals(1, children.size());
List<DirectoryDiff> diffList = fooNode.getDiffs().asList();
assertEquals(1, diffList.size());
DirectoryDiff diff = diffList.get(0);
// this diff is generated while renaming
assertEquals(snap1, Snapshot.getSnapshotName(diff.snapshot));
Snapshot s1 = rootNode.getSnapshot(DFSUtil.string2Bytes(snap1));
assertEquals(s1.getId(), diff.getSnapshotId());
// after undo, the diff should be empty
assertTrue(diff.getChildrenDiff().getList(ListType.DELETED).isEmpty());
assertTrue(diff.getChildrenDiff().getList(ListType.CREATED).isEmpty());
@ -1709,7 +1748,7 @@ public void testRenameUndo_7() throws Exception {
List<FileDiff> barDiffList = barNode.getDiffs().asList();
assertEquals(1, barDiffList.size());
FileDiff barDiff = barDiffList.get(0);
assertEquals(snap1, Snapshot.getSnapshotName(barDiff.snapshot));
assertEquals(s1.getId(), barDiff.getSnapshotId());
// restart cluster multiple times to make sure the fsimage and edits log are
// correct. Note that when loading fsimage, foo and bar will be converted
@ -1941,12 +1980,14 @@ public void testRenameDirAndDeleteSnapshot_3() throws Exception {
(WithCount) fooRef.asReference().getReferredINode();
assertEquals(1, wc.getReferenceCount());
INodeDirectory fooNode = wc.getReferredINode().asDirectory();
ReadOnlyList<INode> children = fooNode.getChildrenList(null);
ReadOnlyList<INode> children = fooNode
.getChildrenList(Snapshot.CURRENT_STATE_ID);
assertEquals(1, children.size());
assertEquals(bar.getName(), children.get(0).getLocalName());
List<DirectoryDiff> diffList = fooNode.getDiffs().asList();
assertEquals(1, diffList.size());
assertEquals("s1", Snapshot.getSnapshotName(diffList.get(0).snapshot));
Snapshot s1 = dir1Node.getSnapshot(DFSUtil.string2Bytes("s1"));
assertEquals(s1.getId(), diffList.get(0).getSnapshotId());
ChildrenDiff diff = diffList.get(0).getChildrenDiff();
assertEquals(0, diff.getList(ListType.CREATED).size());
assertEquals(0, diff.getList(ListType.DELETED).size());
@ -2009,14 +2050,16 @@ public void testRenameDirAndDeleteSnapshot_4() throws Exception {
(WithCount) fooRef.asReference().getReferredINode();
assertEquals(2, wc.getReferenceCount());
INodeDirectory fooNode = wc.getReferredINode().asDirectory();
ReadOnlyList<INode> children = fooNode.getChildrenList(null);
ReadOnlyList<INode> children = fooNode
.getChildrenList(Snapshot.CURRENT_STATE_ID);
assertEquals(3, children.size());
assertEquals(bar.getName(), children.get(0).getLocalName());
assertEquals(bar2.getName(), children.get(1).getLocalName());
assertEquals(bar3.getName(), children.get(2).getLocalName());
List<DirectoryDiff> diffList = fooNode.getDiffs().asList();
assertEquals(1, diffList.size());
assertEquals("s1", Snapshot.getSnapshotName(diffList.get(0).snapshot));
Snapshot s1 = dir1Node.getSnapshot(DFSUtil.string2Bytes("s1"));
assertEquals(s1.getId(), diffList.get(0).getSnapshotId());
ChildrenDiff diff = diffList.get(0).getChildrenDiff();
// bar2 and bar3 in the created list
assertEquals(2, diff.getList(ListType.CREATED).size());
@ -2134,11 +2177,12 @@ public void testRenameDirAndDeleteSnapshot_6() throws Exception {
// recordModification before the rename
assertTrue(fooNode.isWithSnapshot());
assertTrue(fooNode.getDiffs().asList().isEmpty());
INodeDirectory barNode = fooNode.getChildrenList(null).get(0).asDirectory();
INodeDirectory barNode = fooNode.getChildrenList(Snapshot.CURRENT_STATE_ID)
.get(0).asDirectory();
// bar should also be INodeDirectory (With Snapshot), and both of its diff
// list and children list are empty
assertTrue(barNode.getDiffs().asList().isEmpty());
assertTrue(barNode.getChildrenList(null).isEmpty());
assertTrue(barNode.getChildrenList(Snapshot.CURRENT_STATE_ID).isEmpty());
restartClusterAndCheckImage(true);
}
@ -2210,7 +2254,10 @@ public void testRenameDirAndDeleteSnapshot_7() throws Exception {
List<DirectoryDiff> barDiffList = barNode.getDiffs().asList();
assertEquals(1, barDiffList.size());
DirectoryDiff diff = barDiffList.get(0);
assertEquals("s0", Snapshot.getSnapshotName(diff.snapshot));
INodeDirectorySnapshottable testNode =
(INodeDirectorySnapshottable) fsdir.getINode4Write(test.toString());
Snapshot s0 = testNode.getSnapshot(DFSUtil.string2Bytes("s0"));
assertEquals(s0.getId(), diff.getSnapshotId());
// and file should be stored in the deleted list of this snapshot diff
assertEquals("file", diff.getChildrenDiff().getList(ListType.DELETED)
.get(0).getLocalName());
@ -2276,7 +2323,7 @@ public void testCleanDstReference() throws Exception {
final Path barInS0 = SnapshotTestHelper.getSnapshotPath(test, "s0",
"foo/bar");
INodeDirectory barNode = fsdir.getINode(barInS0.toString()).asDirectory();
assertEquals(0, barNode.getChildrenList(null).size());
assertEquals(0, barNode.getChildrenList(Snapshot.CURRENT_STATE_ID).size());
List<DirectoryDiff> diffList = barNode.getDiffs().asList();
assertEquals(1, diffList.size());
DirectoryDiff diff = diffList.get(0);

5
hadoop-hdfs-project/hadoop-hdfs/src/test/java/org/apache/hadoop/hdfs/server/namenode/snapshot/TestSetQuotaWithSnapshot.java
View File

@ -28,6 +28,7 @@
import org.apache.hadoop.fs.Path;
import org.apache.hadoop.hdfs.DFSConfigKeys;
import org.apache.hadoop.hdfs.DFSTestUtil;
import org.apache.hadoop.hdfs.DFSUtil;
import org.apache.hadoop.hdfs.DistributedFileSystem;
import org.apache.hadoop.hdfs.MiniDFSCluster;
import org.apache.hadoop.hdfs.protocol.HdfsConstants;
@ -153,7 +154,9 @@ public void testClearQuota() throws Exception {
assertTrue(subNode.asDirectory().isWithSnapshot());
List<DirectoryDiff> diffList = subNode.asDirectory().getDiffs().asList();
assertEquals(1, diffList.size());
assertEquals("s2", Snapshot.getSnapshotName(diffList.get(0).snapshot));
Snapshot s2 = ((INodeDirectorySnapshottable) dirNode).getSnapshot(DFSUtil
.string2Bytes("s2"));
assertEquals(s2.getId(), diffList.get(0).getSnapshotId());
List<INode> createdList = diffList.get(0).getChildrenDiff().getList(ListType.CREATED);
assertEquals(1, createdList.size());
assertSame(fsdir.getINode4Write(file.toString()), createdList.get(0));

30
hadoop-hdfs-project/hadoop-hdfs/src/test/java/org/apache/hadoop/hdfs/server/namenode/snapshot/TestSnapshotDeletion.java
View File

@ -268,7 +268,8 @@ public void testDeleteCurrentFileDirectory() throws Exception {
(INodeDirectory) fsdir.getINode(snapshotNoChangeDir.toString());
// should still be an INodeDirectory
assertEquals(INodeDirectory.class, snapshotNode.getClass());
ReadOnlyList<INode> children = snapshotNode.getChildrenList(null);
ReadOnlyList<INode> children = snapshotNode
.getChildrenList(Snapshot.CURRENT_STATE_ID);
// check 2 children: noChangeFile and metaChangeFile2
assertEquals(2, children.size());
INode noChangeFileSCopy = children.get(1);
@ -286,11 +287,11 @@ public void testDeleteCurrentFileDirectory() throws Exception {
// check the replication factor of metaChangeFile2SCopy
assertEquals(REPLICATION_1,
metaChangeFile2SCopy.getFileReplication(null));
metaChangeFile2SCopy.getFileReplication(Snapshot.CURRENT_STATE_ID));
assertEquals(REPLICATION_1,
metaChangeFile2SCopy.getFileReplication(snapshot1));
metaChangeFile2SCopy.getFileReplication(snapshot1.getId()));
assertEquals(REPLICATION,
metaChangeFile2SCopy.getFileReplication(snapshot0));
metaChangeFile2SCopy.getFileReplication(snapshot0.getId()));
// Case 4: delete directory sub
// before deleting sub, we first create a new file under sub
@ -316,23 +317,25 @@ public void testDeleteCurrentFileDirectory() throws Exception {
assertTrue(snapshotNode4Sub.isWithSnapshot());
// the snapshot copy of sub has only one child subsub.
// newFile should have been destroyed
assertEquals(1, snapshotNode4Sub.getChildrenList(null).size());
assertEquals(1, snapshotNode4Sub.getChildrenList(Snapshot.CURRENT_STATE_ID)
.size());
// but should have two children, subsub and noChangeDir, when s1 was taken
assertEquals(2, snapshotNode4Sub.getChildrenList(snapshot1).size());
assertEquals(2, snapshotNode4Sub.getChildrenList(snapshot1.getId()).size());
// check the snapshot copy of subsub, which is contained in the subtree of
// sub's snapshot copy
INode snapshotNode4Subsub = snapshotNode4Sub.getChildrenList(null).get(0);
INode snapshotNode4Subsub = snapshotNode4Sub.getChildrenList(
Snapshot.CURRENT_STATE_ID).get(0);
assertTrue(snapshotNode4Subsub.asDirectory().isWithSnapshot());
assertTrue(snapshotNode4Sub == snapshotNode4Subsub.getParent());
// check the children of subsub
INodeDirectory snapshotSubsubDir = (INodeDirectory) snapshotNode4Subsub;
children = snapshotSubsubDir.getChildrenList(null);
children = snapshotSubsubDir.getChildrenList(Snapshot.CURRENT_STATE_ID);
assertEquals(2, children.size());
assertEquals(children.get(0).getLocalName(), metaChangeFile1.getName());
assertEquals(children.get(1).getLocalName(), newFileAfterS0.getName());
// only one child before snapshot s0
children = snapshotSubsubDir.getChildrenList(snapshot0);
children = snapshotSubsubDir.getChildrenList(snapshot0.getId());
assertEquals(1, children.size());
INode child = children.get(0);
assertEquals(child.getLocalName(), metaChangeFile1.getName());
@ -341,11 +344,11 @@ public void testDeleteCurrentFileDirectory() throws Exception {
assertTrue(metaChangeFile1SCopy.isWithSnapshot());
assertFalse(metaChangeFile1SCopy.isUnderConstruction());
assertEquals(REPLICATION_1,
metaChangeFile1SCopy.getFileReplication(null));
metaChangeFile1SCopy.getFileReplication(Snapshot.CURRENT_STATE_ID));
assertEquals(REPLICATION_1,
metaChangeFile1SCopy.getFileReplication(snapshot1));
metaChangeFile1SCopy.getFileReplication(snapshot1.getId()));
assertEquals(REPLICATION,
metaChangeFile1SCopy.getFileReplication(snapshot0));
metaChangeFile1SCopy.getFileReplication(snapshot0.getId()));
}
/**
@ -474,9 +477,10 @@ public void testDeleteEarliestSnapshot2() throws Exception {
(INodeDirectorySnapshottable) fsdir.getINode(dir.toString());
Snapshot snapshot0 = dirNode.getSnapshot(DFSUtil.string2Bytes("s0"));
assertNull(snapshot0);
Snapshot snapshot1 = dirNode.getSnapshot(DFSUtil.string2Bytes("s1"));
DirectoryDiffList diffList = dirNode.getDiffs();
assertEquals(1, diffList.asList().size());
assertEquals("s1", diffList.getLast().snapshot.getRoot().getLocalName());
assertEquals(snapshot1.getId(), diffList.getLast().getSnapshotId());
diffList = fsdir.getINode(metaChangeDir.toString()).asDirectory()
.getDiffs();
assertEquals(0, diffList.asList().size());

3
hadoop-hdfs-project/hadoop-hdfs/src/test/java/org/apache/hadoop/hdfs/server/namenode/snapshot/TestSnapshotRename.java
View File

@ -101,7 +101,8 @@ private void checkSnapshotList(INodeDirectorySnapshottable srcRoot,
List<DirectoryDiff> listByTime = srcRoot.getDiffs().asList();
assertEquals(names.length, listByTime.size());
for (int i = 0; i < listByTime.size(); i++) {
assertEquals(names[i], listByTime.get(i).getSnapshot().getRoot().getLocalName());
Snapshot s = srcRoot.getSnapshotById(listByTime.get(i).getSnapshotId());
assertEquals(names[i], s.getRoot().getLocalName());
}
}

2
hadoop-hdfs-project/hadoop-hdfs/src/test/java/org/apache/hadoop/hdfs/server/namenode/snapshot/TestSnapshotReplication.java
View File

@ -150,7 +150,7 @@ private void checkSnapshotFileReplication(Path currentFile,
assertEquals(expectedBlockRep, ssInode.getBlockReplication());
// Also check the number derived from INodeFile#getFileReplication
assertEquals(snapshotRepMap.get(ss).shortValue(),
ssInode.getFileReplication(iip.getPathSnapshot()));
ssInode.getFileReplication(iip.getPathSnapshotId()));
}
}