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HDFS-10744. Internally optimize path component resolution. Contributed by Daryn Sharp. 

(cherry picked from commit 03dea65e0b)

Conflicts:
	hadoop-hdfs-project/hadoop-hdfs/src/main/java/org/apache/hadoop/hdfs/server/namenode/FSDirWriteFileOp.java
This commit is contained in:
Kihwal Lee 2016-08-15 17:01:40 -05:00
parent 5c2f2ae7bc
commit 1ef8d7a638
15 changed files with 115 additions and 186 deletions
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18
hadoop-hdfs-project/hadoop-hdfs/src/main/java/org/apache/hadoop/hdfs/server/namenode/FSDirAclOp.java
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@ -39,8 +39,7 @@ class FSDirAclOp {
String src = srcArg;
checkAclsConfigFlag(fsd);
FSPermissionChecker pc = fsd.getPermissionChecker();
byte[][] pathComponents = FSDirectory.getPathComponentsForReservedPath(src);
src = fsd.resolvePath(pc, src, pathComponents);
src = fsd.resolvePath(pc, src);
INodesInPath iip;
fsd.writeLock();
try {
@ -65,8 +64,7 @@ class FSDirAclOp {
String src = srcArg;
checkAclsConfigFlag(fsd);
FSPermissionChecker pc = fsd.getPermissionChecker();
byte[][] pathComponents = FSDirectory.getPathComponentsForReservedPath(src);
src = fsd.resolvePath(pc, src, pathComponents);
src = fsd.resolvePath(pc, src);
INodesInPath iip;
fsd.writeLock();
try {
@ -90,8 +88,7 @@ class FSDirAclOp {
String src = srcArg;
checkAclsConfigFlag(fsd);
FSPermissionChecker pc = fsd.getPermissionChecker();
byte[][] pathComponents = FSDirectory.getPathComponentsForReservedPath(src);
src = fsd.resolvePath(pc, src, pathComponents);
src = fsd.resolvePath(pc, src);
INodesInPath iip;
fsd.writeLock();
try {
@ -115,8 +112,7 @@ class FSDirAclOp {
String src = srcArg;
checkAclsConfigFlag(fsd);
FSPermissionChecker pc = fsd.getPermissionChecker();
byte[][] pathComponents = FSDirectory.getPathComponentsForReservedPath(src);
src = fsd.resolvePath(pc, src, pathComponents);
src = fsd.resolvePath(pc, src);
INodesInPath iip;
fsd.writeLock();
try {
@ -135,9 +131,8 @@ class FSDirAclOp {
throws IOException {
String src = srcArg;
checkAclsConfigFlag(fsd);
byte[][] pathComponents = FSDirectory.getPathComponentsForReservedPath(src);
FSPermissionChecker pc = fsd.getPermissionChecker();
src = fsd.resolvePath(pc, src, pathComponents);
src = fsd.resolvePath(pc, src);
INodesInPath iip;
fsd.writeLock();
try {
@ -155,8 +150,7 @@ class FSDirAclOp {
FSDirectory fsd, String src) throws IOException {
checkAclsConfigFlag(fsd);
FSPermissionChecker pc = fsd.getPermissionChecker();
byte[][] pathComponents = FSDirectory.getPathComponentsForReservedPath(src);
src = fsd.resolvePath(pc, src, pathComponents);
src = fsd.resolvePath(pc, src);
String srcs = FSDirectory.normalizePath(src);
fsd.readLock();
try {

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

@ -82,14 +82,12 @@ final class FSDirAppendOp {
final boolean logRetryCache) throws IOException {
assert fsn.hasWriteLock();
final byte[][] pathComponents = FSDirectory
.getPathComponentsForReservedPath(srcArg);
final LocatedBlock lb;
final FSDirectory fsd = fsn.getFSDirectory();
final String src;
fsd.writeLock();
try {
src = fsd.resolvePath(pc, srcArg, pathComponents);
src = fsd.resolvePath(pc, srcArg);
final INodesInPath iip = fsd.getINodesInPath4Write(src);
// Verify that the destination does not exist as a directory already
final INode inode = iip.getLastINode();

22
hadoop-hdfs-project/hadoop-hdfs/src/main/java/org/apache/hadoop/hdfs/server/namenode/FSDirAttrOp.java
View File

@ -57,11 +57,10 @@ public class FSDirAttrOp {
throw new InvalidPathException(src);
}
FSPermissionChecker pc = fsd.getPermissionChecker();
byte[][] pathComponents = FSDirectory.getPathComponentsForReservedPath(src);
INodesInPath iip;
fsd.writeLock();
try {
src = fsd.resolvePath(pc, src, pathComponents);
src = fsd.resolvePath(pc, src);
iip = fsd.getINodesInPath4Write(src);
fsd.checkOwner(pc, iip);
unprotectedSetPermission(fsd, src, permission);
@ -79,11 +78,10 @@ public class FSDirAttrOp {
throw new InvalidPathException(src);
}
FSPermissionChecker pc = fsd.getPermissionChecker();
byte[][] pathComponents = FSDirectory.getPathComponentsForReservedPath(src);
INodesInPath iip;
fsd.writeLock();
try {
src = fsd.resolvePath(pc, src, pathComponents);
src = fsd.resolvePath(pc, src);
iip = fsd.getINodesInPath4Write(src);
fsd.checkOwner(pc, iip);
if (!pc.isSuperUser()) {
@ -106,12 +104,11 @@ public class FSDirAttrOp {
FSDirectory fsd, String src, long mtime, long atime)
throws IOException {
FSPermissionChecker pc = fsd.getPermissionChecker();
byte[][] pathComponents = FSDirectory.getPathComponentsForReservedPath(src);
INodesInPath iip;
fsd.writeLock();
try {
src = fsd.resolvePath(pc, src, pathComponents);
src = fsd.resolvePath(pc, src);
iip = fsd.getINodesInPath4Write(src);
// Write access is required to set access and modification times
if (fsd.isPermissionEnabled()) {
@ -139,10 +136,9 @@ public class FSDirAttrOp {
bm.verifyReplication(src, replication, null);
final boolean isFile;
FSPermissionChecker pc = fsd.getPermissionChecker();
byte[][] pathComponents = FSDirectory.getPathComponentsForReservedPath(src);
fsd.writeLock();
try {
src = fsd.resolvePath(pc, src, pathComponents);
src = fsd.resolvePath(pc, src);
final INodesInPath iip = fsd.getINodesInPath4Write(src);
if (fsd.isPermissionEnabled()) {
fsd.checkPathAccess(pc, iip, FsAction.WRITE);
@ -187,11 +183,10 @@ public class FSDirAttrOp {
DFS_STORAGE_POLICY_ENABLED_KEY));
}
FSPermissionChecker pc = fsd.getPermissionChecker();
byte[][] pathComponents = FSDirectory.getPathComponentsForReservedPath(src);
INodesInPath iip;
fsd.writeLock();
try {
src = FSDirectory.resolvePath(src, pathComponents, fsd);
src = FSDirectory.resolvePath(src, fsd);
iip = fsd.getINodesInPath4Write(src);
if (fsd.isPermissionEnabled()) {
@ -214,11 +209,9 @@ public class FSDirAttrOp {
static BlockStoragePolicy getStoragePolicy(FSDirectory fsd, BlockManager bm,
String path) throws IOException {
FSPermissionChecker pc = fsd.getPermissionChecker();
byte[][] pathComponents = FSDirectory
.getPathComponentsForReservedPath(path);
fsd.readLock();
try {
path = fsd.resolvePath(pc, path, pathComponents);
path = fsd.resolvePath(pc, path);
final INodesInPath iip = fsd.getINodesInPath(path, false);
if (fsd.isPermissionEnabled()) {
fsd.checkPathAccess(pc, iip, FsAction.READ);
@ -237,10 +230,9 @@ public class FSDirAttrOp {
static long getPreferredBlockSize(FSDirectory fsd, String src)
throws IOException {
FSPermissionChecker pc = fsd.getPermissionChecker();
byte[][] pathComponents = FSDirectory.getPathComponentsForReservedPath(src);
fsd.readLock();
try {
src = fsd.resolvePath(pc, src, pathComponents);
src = fsd.resolvePath(pc, src);
final INodesInPath iip = fsd.getINodesInPath(src, false);
if (fsd.isPermissionEnabled()) {
fsd.checkTraverse(pc, iip);

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

@ -97,9 +97,8 @@ class FSDirDeleteOp {
throws IOException {
FSDirectory fsd = fsn.getFSDirectory();
FSPermissionChecker pc = fsd.getPermissionChecker();
byte[][] pathComponents = FSDirectory.getPathComponentsForReservedPath(src);
src = fsd.resolvePath(pc, src, pathComponents);
src = fsd.resolvePath(pc, src);
final INodesInPath iip = fsd.getINodesInPath4Write(src, false);
if (!recursive && fsd.isNonEmptyDirectory(iip)) {
throw new PathIsNotEmptyDirectoryException(src + " is non empty");
@ -109,7 +108,7 @@ class FSDirDeleteOp {
FsAction.ALL, true);
}
if (recursive && fsd.isNonEmptyDirectory(iip)) {
checkProtectedDescendants(fsd, fsd.normalizePath(src));
checkProtectedDescendants(fsd, src);
}
return deleteInternal(fsn, src, iip, logRetryCache);

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

@ -146,8 +146,6 @@ final class FSDirEncryptionZoneOp {
static HdfsFileStatus createEncryptionZone(final FSDirectory fsd,
final String srcArg, final FSPermissionChecker pc, final String cipher,
final String keyName, final boolean logRetryCache) throws IOException {
final byte[][] pathComponents = FSDirectory
.getPathComponentsForReservedPath(srcArg);
final CipherSuite suite = CipherSuite.convert(cipher);
List<XAttr> xAttrs = Lists.newArrayListWithCapacity(1);
final String src;
@ -157,7 +155,7 @@ final class FSDirEncryptionZoneOp {
fsd.writeLock();
try {
src = fsd.resolvePath(pc, srcArg, pathComponents);
src = fsd.resolvePath(pc, srcArg);
final XAttr ezXAttr = fsd.ezManager.createEncryptionZone(src, suite,
version, keyName);
xAttrs.add(ezXAttr);
@ -180,14 +178,12 @@ final class FSDirEncryptionZoneOp {
static Map.Entry<EncryptionZone, HdfsFileStatus> getEZForPath(
final FSDirectory fsd, final String srcArg, final FSPermissionChecker pc)
throws IOException {
final byte[][] pathComponents = FSDirectory
.getPathComponentsForReservedPath(srcArg);
final String src;
final INodesInPath iip;
final EncryptionZone ret;
fsd.readLock();
try {
src = fsd.resolvePath(pc, srcArg, pathComponents);
src = fsd.resolvePath(pc, srcArg);
iip = fsd.getINodesInPath(src, true);
if (iip.getLastINode() == null) {
throw new FileNotFoundException("Path not found: " + iip.getPath());

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

@ -50,10 +50,9 @@ class FSDirMkdirOp {
throw new InvalidPathException(src);
}
FSPermissionChecker pc = fsd.getPermissionChecker();
byte[][] pathComponents = FSDirectory.getPathComponentsForReservedPath(src);
fsd.writeLock();
try {
src = fsd.resolvePath(pc, src, pathComponents);
src = fsd.resolvePath(pc, src);
INodesInPath iip = fsd.getINodesInPath4Write(src);
if (fsd.isPermissionEnabled()) {
fsd.checkTraverse(pc, iip);

12
hadoop-hdfs-project/hadoop-hdfs/src/main/java/org/apache/hadoop/hdfs/server/namenode/FSDirRenameOp.java
View File

@ -64,11 +64,9 @@ class FSDirRenameOp {
}
FSPermissionChecker pc = fsd.getPermissionChecker();
byte[][] srcComponents = FSDirectory.getPathComponentsForReservedPath(src);
byte[][] dstComponents = FSDirectory.getPathComponentsForReservedPath(dst);
HdfsFileStatus resultingStat = null;
src = fsd.resolvePath(pc, src, srcComponents);
dst = fsd.resolvePath(pc, dst, dstComponents);
src = fsd.resolvePath(pc, src);
dst = fsd.resolvePath(pc, dst);
@SuppressWarnings("deprecation")
final boolean status = renameTo(fsd, pc, src, dst, logRetryCache);
if (status) {
@ -239,11 +237,9 @@ class FSDirRenameOp {
}
final FSPermissionChecker pc = fsd.getPermissionChecker();
byte[][] srcComponents = FSDirectory.getPathComponentsForReservedPath(src);
byte[][] dstComponents = FSDirectory.getPathComponentsForReservedPath(dst);
BlocksMapUpdateInfo collectedBlocks = new BlocksMapUpdateInfo();
src = fsd.resolvePath(pc, src, srcComponents);
dst = fsd.resolvePath(pc, dst, dstComponents);
src = fsd.resolvePath(pc, src);
dst = fsd.resolvePath(pc, dst);
renameTo(fsd, pc, src, dst, collectedBlocks, logRetryCache, options);
INodesInPath dstIIP = fsd.getINodesInPath(dst, false);
HdfsFileStatus resultingStat = fsd.getAuditFileInfo(dstIIP);

27
hadoop-hdfs-project/hadoop-hdfs/src/main/java/org/apache/hadoop/hdfs/server/namenode/FSDirStatAndListingOp.java
View File

@ -50,24 +50,20 @@ import static org.apache.hadoop.util.Time.now;
class FSDirStatAndListingOp {
static DirectoryListing getListingInt(FSDirectory fsd, final String srcArg,
byte[] startAfter, boolean needLocation) throws IOException {
byte[][] pathComponents = FSDirectory
.getPathComponentsForReservedPath(srcArg);
final String startAfterString = DFSUtil.bytes2String(startAfter);
String src = null;
if (fsd.isPermissionEnabled()) {
FSPermissionChecker pc = fsd.getPermissionChecker();
src = fsd.resolvePath(pc, srcArg, pathComponents);
src = fsd.resolvePath(pc, srcArg);
} else {
src = FSDirectory.resolvePath(srcArg, pathComponents, fsd);
src = FSDirectory.resolvePath(srcArg, fsd);
}
// Get file name when startAfter is an INodePath
if (FSDirectory.isReservedName(startAfterString)) {
byte[][] startAfterComponents = FSDirectory
.getPathComponentsForReservedPath(startAfterString);
try {
String tmp = FSDirectory.resolvePath(src, startAfterComponents, fsd);
String tmp = FSDirectory.resolvePath(startAfterString, fsd);
byte[][] regularPath = INode.getPathComponents(tmp);
startAfter = regularPath[regularPath.length - 1];
} catch (IOException e) {
@ -108,14 +104,13 @@ class FSDirStatAndListingOp {
if (!DFSUtil.isValidName(src)) {
throw new InvalidPathException("Invalid file name: " + src);
}
byte[][] pathComponents = FSDirectory.getPathComponentsForReservedPath(src);
if (fsd.isPermissionEnabled()) {
FSPermissionChecker pc = fsd.getPermissionChecker();
src = fsd.resolvePath(pc, src, pathComponents);
src = fsd.resolvePath(pc, srcArg);
final INodesInPath iip = fsd.getINodesInPath(src, resolveLink);
fsd.checkPermission(pc, iip, false, null, null, null, null, false);
} else {
src = FSDirectory.resolvePath(src, pathComponents, fsd);
src = FSDirectory.resolvePath(srcArg, fsd);
}
return getFileInfo(fsd, src, FSDirectory.isReservedRawName(srcArg),
resolveLink);
@ -126,8 +121,7 @@ class FSDirStatAndListingOp {
*/
static boolean isFileClosed(FSDirectory fsd, String src) throws IOException {
FSPermissionChecker pc = fsd.getPermissionChecker();
byte[][] pathComponents = FSDirectory.getPathComponentsForReservedPath(src);
src = fsd.resolvePath(pc, src, pathComponents);
src = fsd.resolvePath(pc, src);
final INodesInPath iip = fsd.getINodesInPath(src, true);
if (fsd.isPermissionEnabled()) {
fsd.checkTraverse(pc, iip);
@ -137,9 +131,8 @@ class FSDirStatAndListingOp {
static ContentSummary getContentSummary(
FSDirectory fsd, String src) throws IOException {
byte[][] pathComponents = FSDirectory.getPathComponentsForReservedPath(src);
FSPermissionChecker pc = fsd.getPermissionChecker();
src = fsd.resolvePath(pc, src, pathComponents);
src = fsd.resolvePath(pc, src);
final INodesInPath iip = fsd.getINodesInPath(src, false);
if (fsd.isPermissionEnabled()) {
fsd.checkPermission(pc, iip, false, null, null, null,
@ -162,11 +155,10 @@ class FSDirStatAndListingOp {
"Negative length is not supported. File: " + src);
CacheManager cm = fsd.getFSNamesystem().getCacheManager();
BlockManager bm = fsd.getBlockManager();
byte[][] pathComponents = FSDirectory.getPathComponentsForReservedPath(src);
boolean isReservedName = FSDirectory.isReservedRawName(src);
fsd.readLock();
try {
src = fsd.resolvePath(pc, src, pathComponents);
src = fsd.resolvePath(pc, src);
final INodesInPath iip = fsd.getINodesInPath(src, true);
final INodeFile inode = INodeFile.valueOf(iip.getLastINode(), src);
if (fsd.isPermissionEnabled()) {
@ -618,12 +610,11 @@ class FSDirStatAndListingOp {
static QuotaUsage getQuotaUsage(
FSDirectory fsd, String src) throws IOException {
byte[][] pathComponents = FSDirectory.getPathComponentsForReservedPath(src);
FSPermissionChecker pc = fsd.getPermissionChecker();
final INodesInPath iip;
fsd.readLock();
try {
src = fsd.resolvePath(pc, src, pathComponents);
src = fsd.resolvePath(pc, src);
iip = fsd.getINodesInPath(src, false);
if (fsd.isPermissionEnabled()) {
fsd.checkPermission(pc, iip, false, null, null, null,

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

@ -53,11 +53,10 @@ class FSDirSymlinkOp {
}
FSPermissionChecker pc = fsn.getPermissionChecker();
byte[][] pathComponents = FSDirectory.getPathComponentsForReservedPath(link);
INodesInPath iip;
fsd.writeLock();
try {
link = fsd.resolvePath(pc, link, pathComponents);
link = fsd.resolvePath(pc, link);
iip = fsd.getINodesInPath4Write(link, false);
if (!createParent) {
fsd.verifyParentDir(iip, link);

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

@ -71,15 +71,13 @@ final class FSDirTruncateOp {
assert fsn.hasWriteLock();
FSDirectory fsd = fsn.getFSDirectory();
byte[][] pathComponents = FSDirectory
.getPathComponentsForReservedPath(srcArg);
final String src;
final INodesInPath iip;
final boolean onBlockBoundary;
Block truncateBlock = null;
fsd.writeLock();
try {
src = fsd.resolvePath(pc, srcArg, pathComponents);
src = fsd.resolvePath(pc, srcArg);
iip = fsd.getINodesInPath4Write(src, true);
if (fsd.isPermissionEnabled()) {
fsd.checkPathAccess(pc, iip, FsAction.WRITE);

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

@ -116,8 +116,7 @@ class FSDirWriteFileOp {
static void abandonBlock(
FSDirectory fsd, FSPermissionChecker pc, ExtendedBlock b, long fileId,
String src, String holder) throws IOException {
byte[][] pathComponents = FSDirectory.getPathComponentsForReservedPath(src);
src = fsd.resolvePath(pc, src, pathComponents);
src = fsd.resolvePath(pc, src);
final INode inode;
final INodesInPath iip;
@ -178,8 +177,7 @@ class FSDirWriteFileOp {
final byte storagePolicyID;
String clientMachine;
byte[][] pathComponents = FSDirectory.getPathComponentsForReservedPath(src);
src = fsn.dir.resolvePath(pc, src, pathComponents);
src = fsn.dir.resolvePath(pc, src);
FileState fileState = analyzeFileState(fsn, src, fileId, clientName,
previous, onRetryBlock);
if (onRetryBlock[0] != null && onRetryBlock[0].getLocations().length > 0) {
@ -341,8 +339,7 @@ class FSDirWriteFileOp {
boolean isRawPath = FSDirectory.isReservedRawName(src);
FSDirectory fsd = fsn.getFSDirectory();
byte[][] pathComponents = FSDirectory.getPathComponentsForReservedPath(src);
src = fsd.resolvePath(pc, src, pathComponents);
src = fsd.resolvePath(pc, src);
INodesInPath iip = fsd.getINodesInPath4Write(src);
// Verify that the destination does not exist as a directory already.
@ -451,9 +448,8 @@ class FSDirWriteFileOp {
FSPermissionChecker pc, String src,
CryptoProtocolVersion[] supportedVersions)
throws IOException {
byte[][] pathComponents = FSDirectory.getPathComponentsForReservedPath(src);
FSDirectory fsd = fsn.getFSDirectory();
src = fsd.resolvePath(pc, src, pathComponents);
src = fsd.resolvePath(pc, src);
INodesInPath iip = fsd.getINodesInPath4Write(src);
// Nothing to do if the path is not within an EZ
final EncryptionZone zone = FSDirEncryptionZoneOp.getEZForPath(fsd, iip);
@ -696,8 +692,7 @@ class FSDirWriteFileOp {
src + " for " + holder);
}
checkBlock(fsn, last);
byte[][] pathComponents = FSDirectory.getPathComponentsForReservedPath(src);
src = fsn.dir.resolvePath(pc, src, pathComponents);
src = fsn.dir.resolvePath(pc, src);
boolean success = completeFileInternal(fsn, src, holder,
ExtendedBlock.getLocalBlock(last),
fileId);

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

@ -67,8 +67,7 @@ class FSDirXAttrOp {
FSPermissionChecker pc = fsd.getPermissionChecker();
XAttrPermissionFilter.checkPermissionForApi(
pc, xAttr, FSDirectory.isReservedRawName(src));
byte[][] pathComponents = FSDirectory.getPathComponentsForReservedPath(src);
src = fsd.resolvePath(pc, src, pathComponents);
src = fsd.resolvePath(pc, src);
List<XAttr> xAttrs = Lists.newArrayListWithCapacity(1);
xAttrs.add(xAttr);
INodesInPath iip;
@ -95,8 +94,7 @@ class FSDirXAttrOp {
if (!getAll) {
XAttrPermissionFilter.checkPermissionForApi(pc, xAttrs, isRawPath);
}
byte[][] pathComponents = FSDirectory.getPathComponentsForReservedPath(src);
src = fsd.resolvePath(pc, src, pathComponents);
src = fsd.resolvePath(pc, src);
final INodesInPath iip = fsd.getINodesInPath(src, true);
if (fsd.isPermissionEnabled()) {
fsd.checkPathAccess(pc, iip, FsAction.READ);
@ -136,8 +134,7 @@ class FSDirXAttrOp {
FSDirXAttrOp.checkXAttrsConfigFlag(fsd);
final FSPermissionChecker pc = fsd.getPermissionChecker();
final boolean isRawPath = FSDirectory.isReservedRawName(src);
byte[][] pathComponents = FSDirectory.getPathComponentsForReservedPath(src);
src = fsd.resolvePath(pc, src, pathComponents);
src = fsd.resolvePath(pc, src);
final INodesInPath iip = fsd.getINodesInPath(src, true);
if (fsd.isPermissionEnabled()) {
/* To access xattr names, you need EXECUTE in the owning directory. */
@ -164,15 +161,13 @@ class FSDirXAttrOp {
FSPermissionChecker pc = fsd.getPermissionChecker();
XAttrPermissionFilter.checkPermissionForApi(
pc, xAttr, FSDirectory.isReservedRawName(src));
byte[][] pathComponents = FSDirectory.getPathComponentsForReservedPath(
src);
List<XAttr> xAttrs = Lists.newArrayListWithCapacity(1);
xAttrs.add(xAttr);
INodesInPath iip;
fsd.writeLock();
try {
src = fsd.resolvePath(pc, src, pathComponents);
src = fsd.resolvePath(pc, src);
iip = fsd.getINodesInPath4Write(src);
checkXAttrChangeAccess(fsd, iip, xAttr, pc);

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

@ -124,6 +124,8 @@ public class FSDirectory implements Closeable {
public final static String DOT_INODES_STRING = ".inodes";
public final static byte[] DOT_INODES =
DFSUtil.string2Bytes(DOT_INODES_STRING);
private final static byte[] DOT_DOT =
DFSUtil.string2Bytes("..");
public final static HdfsFileStatus DOT_RESERVED_STATUS =
new HdfsFileStatus(0, true, 0, 0, 0, 0, new FsPermission((short) 01770),
@ -517,7 +519,6 @@ public class FSDirectory implements Closeable {
*
* @param pc The permission checker used when resolving path.
* @param path The path to resolve.
* @param pathComponents path components corresponding to the path
* @return if the path indicates an inode, return path after replacing up to
* <inodeid> with the corresponding path of the inode, else the path
* in {@code src} as is. If the path refers to a path in the "raw"
@ -525,12 +526,12 @@ public class FSDirectory implements Closeable {
* @throws FileNotFoundException
* @throws AccessControlException
*/
String resolvePath(FSPermissionChecker pc, String path, byte[][] pathComponents)
String resolvePath(FSPermissionChecker pc, String path)
throws FileNotFoundException, AccessControlException {
if (isReservedRawName(path) && isPermissionEnabled) {
pc.checkSuperuserPrivilege();
}
return resolvePath(path, pathComponents, this);
return resolvePath(path, this);
}
/**
@ -1289,13 +1290,6 @@ public class FSDirectory implements Closeable {
return components.toArray(new byte[components.size()][]);
}
/**
* @return path components for reserved path, else null.
*/
static byte[][] getPathComponentsForReservedPath(String src) {
return !isReservedName(src) ? null : INode.getPathComponents(src);
}
/** Check if a given inode name is reserved */
public static boolean isReservedName(INode inode) {
return CHECK_RESERVED_FILE_NAMES
@ -1321,6 +1315,12 @@ public class FSDirectory implements Closeable {
Path.SEPARATOR + DOT_INODES_STRING);
}
static boolean isReservedName(byte[][] components) {
return (components.length > 2) &&
Arrays.equals(INodeDirectory.ROOT_NAME, components[0]) &&
Arrays.equals(DOT_RESERVED, components[1]);
}
/**
* Resolve a /.reserved/... path to a non-reserved path.
* <p/>
@ -1340,7 +1340,6 @@ public class FSDirectory implements Closeable {
* unencrypted file).
*
* @param src path that is being processed
* @param pathComponents path components corresponding to the path
* @param fsd FSDirectory
* @return if the path indicates an inode, return path after replacing up to
* <inodeid> with the corresponding path of the inode, else the path
@ -1348,45 +1347,37 @@ public class FSDirectory implements Closeable {
* directory, return the non-raw pathname.
* @throws FileNotFoundException if inodeid is invalid
*/
static String resolvePath(String src, byte[][] pathComponents,
static String resolvePath(String src,
FSDirectory fsd) throws FileNotFoundException {
final int nComponents = (pathComponents == null) ?
0 : pathComponents.length;
if (nComponents <= 2) {
return src;
}
if (!Arrays.equals(DOT_RESERVED, pathComponents[1])) {
byte[][] pathComponents = INode.getPathComponents(src);
final int nComponents = pathComponents.length;
if (!isReservedName(pathComponents)) {
/* This is not a /.reserved/ path so do nothing. */
return src;
}
if (Arrays.equals(DOT_INODES, pathComponents[2])) {
} else if (Arrays.equals(DOT_INODES, pathComponents[2])) {
/* It's a /.reserved/.inodes path. */
if (nComponents > 3) {
return resolveDotInodesPath(src, pathComponents, fsd);
} else {
return src;
pathComponents = resolveDotInodesPath(pathComponents, fsd);
}
} else if (Arrays.equals(RAW, pathComponents[2])) {
/* It's /.reserved/raw so strip off the /.reserved/raw prefix. */
if (nComponents == 3) {
return Path.SEPARATOR;
pathComponents = new byte[][]{INodeDirectory.ROOT_NAME};
} else {
if (nComponents == 4
&& Arrays.equals(DOT_RESERVED, pathComponents[3])) {
/* It's /.reserved/raw/.reserved so don't strip */
return src;
} else {
return constructRemainingPath("", pathComponents, 3);
pathComponents = constructRemainingPath(
new byte[][]{INodeDirectory.ROOT_NAME}, pathComponents, 3);
}
}
} else {
/* It's some sort of /.reserved/<unknown> path. Ignore it. */
return src;
}
// this double conversion will be unnecessary when resolving returns
// INodesInPath (needs components byte[][])
return DFSUtil.byteArray2PathString(pathComponents);
}
private static String resolveDotInodesPath(String src,
private static byte[][] resolveDotInodesPath(
byte[][] pathComponents, FSDirectory fsd)
throws FileNotFoundException {
final String inodeId = DFSUtil.bytes2String(pathComponents[3]);
@ -1394,48 +1385,47 @@ public class FSDirectory implements Closeable {
try {
id = Long.parseLong(inodeId);
} catch (NumberFormatException e) {
throw new FileNotFoundException("Invalid inode path: " + src);
throw new FileNotFoundException("Invalid inode path: " +
DFSUtil.byteArray2PathString(pathComponents));
}
if (id == INodeId.ROOT_INODE_ID && pathComponents.length == 4) {
return Path.SEPARATOR;
return new byte[][]{INodeDirectory.ROOT_NAME};
}
INode inode = fsd.getInode(id);
if (inode == null) {
throw new FileNotFoundException(
"File for given inode path does not exist: " + src);
"File for given inode path does not exist: " +
DFSUtil.byteArray2PathString(pathComponents));
}
// Handle single ".." for NFS lookup support.
if ((pathComponents.length > 4)
&& DFSUtil.bytes2String(pathComponents[4]).equals("..")) {
&& Arrays.equals(pathComponents[4], DOT_DOT)) {
INode parent = inode.getParent();
if (parent == null || parent.getId() == INodeId.ROOT_INODE_ID) {
// inode is root, or its parent is root.
return Path.SEPARATOR;
} else {
return parent.getFullPathName();
return new byte[][]{INodeDirectory.ROOT_NAME};
}
return parent.getPathComponents();
}
return constructRemainingPath(
inode.getPathComponents(), pathComponents, 4);
}
String path = "";
if (id != INodeId.ROOT_INODE_ID) {
path = inode.getFullPathName();
}
return constructRemainingPath(path, pathComponents, 4);
}
private static String constructRemainingPath(String pathPrefix,
byte[][] pathComponents, int startAt) {
StringBuilder path = new StringBuilder(pathPrefix);
for (int i = startAt; i < pathComponents.length; i++) {
path.append(Path.SEPARATOR).append(
DFSUtil.bytes2String(pathComponents[i]));
private static byte[][] constructRemainingPath(byte[][] components,
byte[][] extraComponents, int startAt) {
int remainder = extraComponents.length - startAt;
if (remainder > 0) {
// grow the array and copy in the remaining components
int pos = components.length;
components = Arrays.copyOf(components, pos + remainder);
System.arraycopy(extraComponents, startAt, components, pos, remainder);
}
if (NameNode.LOG.isDebugEnabled()) {
NameNode.LOG.debug("Resolved path is " + path);
NameNode.LOG.debug(
"Resolved path is " + DFSUtil.byteArray2PathString(components));
}
return path.toString();
return components;
}
INode getINode4DotSnapshot(String src) throws UnresolvedLinkException {

16
hadoop-hdfs-project/hadoop-hdfs/src/main/java/org/apache/hadoop/hdfs/server/namenode/FSNamesystem.java
View File

@ -1777,8 +1777,6 @@ public class FSNamesystem implements Namesystem, FSNamesystemMBean,
logAuditEvent(true, "open", srcArg);
if (!isInSafeMode() && res.updateAccessTime()) {
byte[][] pathComponents = FSDirectory.getPathComponentsForReservedPath(
srcArg);
String src = srcArg;
writeLock();
final long now = now();
@ -1802,7 +1800,7 @@ public class FSNamesystem implements Namesystem, FSNamesystemMBean,
* HDFS-7463. A better fix is to change the edit log of SetTime to
* use inode id instead of a path.
*/
src = dir.resolvePath(pc, srcArg, pathComponents);
src = dir.resolvePath(pc, srcArg);
final INodesInPath iip = dir.getINodesInPath(src, true);
INode inode = iip.getLastINode();
boolean updateAccessTime = inode != null &&
@ -2277,12 +2275,11 @@ public class FSNamesystem implements Namesystem, FSNamesystemMBean,
boolean skipSync = false;
FSPermissionChecker pc = getPermissionChecker();
checkOperation(OperationCategory.WRITE);
byte[][] pathComponents = FSDirectory.getPathComponentsForReservedPath(src);
writeLock();
try {
checkOperation(OperationCategory.WRITE);
checkNameNodeSafeMode("Cannot recover the lease of " + src);
src = dir.resolvePath(pc, src, pathComponents);
src = dir.resolvePath(pc, src);
final INodesInPath iip = dir.getINodesInPath4Write(src);
final INodeFile inode = INodeFile.valueOf(iip.getLastINode(), src);
if (!inode.isUnderConstruction()) {
@ -2526,14 +2523,13 @@ public class FSNamesystem implements Namesystem, FSNamesystemMBean,
final byte storagePolicyID;
final List<DatanodeStorageInfo> chosen;
checkOperation(OperationCategory.READ);
byte[][] pathComponents = FSDirectory.getPathComponentsForReservedPath(src);
FSPermissionChecker pc = getPermissionChecker();
readLock();
try {
checkOperation(OperationCategory.READ);
//check safe mode
checkNameNodeSafeMode("Cannot add datanode; src=" + src + ", blk=" + blk);
src = dir.resolvePath(pc, src, pathComponents);
src = dir.resolvePath(pc, src);
//check lease
final INode inode;
@ -3040,14 +3036,13 @@ public class FSNamesystem implements Namesystem, FSNamesystemMBean,
throws IOException {
NameNode.stateChangeLog.info("BLOCK* fsync: " + src + " for " + clientName);
checkOperation(OperationCategory.WRITE);
byte[][] pathComponents = FSDirectory.getPathComponentsForReservedPath(src);
FSPermissionChecker pc = getPermissionChecker();
writeLock();
try {
checkOperation(OperationCategory.WRITE);
checkNameNodeSafeMode("Cannot fsync file " + src);
src = dir.resolvePath(pc, src, pathComponents);
src = dir.resolvePath(pc, src);
final INode inode;
if (fileId == HdfsConstants.GRANDFATHER_INODE_ID) {
// Older clients may not have given us an inode ID to work with.
@ -6769,11 +6764,10 @@ public class FSNamesystem implements Namesystem, FSNamesystemMBean,
void checkAccess(String src, FsAction mode) throws IOException {
checkOperation(OperationCategory.READ);
byte[][] pathComponents = FSDirectory.getPathComponentsForReservedPath(src);
readLock();
try {
checkOperation(OperationCategory.READ);
src = FSDirectory.resolvePath(src, pathComponents, dir);
src = FSDirectory.resolvePath(src, dir);
final INodesInPath iip = dir.getINodesInPath(src, true);
INode inode = iip.getLastINode();
if (inode == null) {

33
hadoop-hdfs-project/hadoop-hdfs/src/test/java/org/apache/hadoop/hdfs/server/namenode/TestINodeFile.java
View File

@ -858,7 +858,7 @@ public class TestINodeFile {
}
/**
* Tests for {@link FSDirectory#resolvePath(String, byte[][], FSDirectory)}
* Tests for {@link FSDirectory#resolvePath(String, FSDirectory)}
*/
@Test
public void testInodePath() throws IOException {
@ -869,53 +869,46 @@ public class TestINodeFile {
FSDirectory fsd = Mockito.mock(FSDirectory.class);
Mockito.doReturn(inode).when(fsd).getInode(Mockito.anyLong());
// Null components
assertEquals("/test", FSDirectory.resolvePath("/test", null, fsd));
// Tests for FSDirectory#resolvePath()
// Non inode regular path
byte[][] components = INode.getPathComponents(path);
String resolvedPath = FSDirectory.resolvePath(path, components, fsd);
String resolvedPath = FSDirectory.resolvePath(path, fsd);
assertEquals(path, resolvedPath);
// Inode path with no trailing separator
components = INode.getPathComponents("/.reserved/.inodes/1");
resolvedPath = FSDirectory.resolvePath(path, components, fsd);
String testPath = "/.reserved/.inodes/1";
resolvedPath = FSDirectory.resolvePath(testPath, fsd);
assertEquals(path, resolvedPath);
// Inode path with trailing separator
components = INode.getPathComponents("/.reserved/.inodes/1/");
testPath = "/.reserved/.inodes/1/";
resolvedPath = FSDirectory.resolvePath(testPath, fsd);
assertEquals(path, resolvedPath);
// Inode relative path
components = INode.getPathComponents("/.reserved/.inodes/1/d/e/f");
resolvedPath = FSDirectory.resolvePath(path, components, fsd);
testPath = "/.reserved/.inodes/1/d/e/f";
resolvedPath = FSDirectory.resolvePath(testPath, fsd);
assertEquals("/a/b/c/d/e/f", resolvedPath);
// A path with just .inodes returns the path as is
String testPath = "/.reserved/.inodes";
components = INode.getPathComponents(testPath);
resolvedPath = FSDirectory.resolvePath(testPath, components, fsd);
testPath = "/.reserved/.inodes";
resolvedPath = FSDirectory.resolvePath(testPath, fsd);
assertEquals(testPath, resolvedPath);
// Root inode path
testPath = "/.reserved/.inodes/" + INodeId.ROOT_INODE_ID;
components = INode.getPathComponents(testPath);
resolvedPath = FSDirectory.resolvePath(testPath, components, fsd);
resolvedPath = FSDirectory.resolvePath(testPath, fsd);
assertEquals("/", resolvedPath);
// An invalid inode path should remain unresolved
testPath = "/.invalid/.inodes/1";
components = INode.getPathComponents(testPath);
resolvedPath = FSDirectory.resolvePath(testPath, components, fsd);
resolvedPath = FSDirectory.resolvePath(testPath, fsd);
assertEquals(testPath, resolvedPath);
// Test path with nonexistent(deleted or wrong id) inode
Mockito.doReturn(null).when(fsd).getInode(Mockito.anyLong());
testPath = "/.reserved/.inodes/1234";
components = INode.getPathComponents(testPath);
try {
String realPath = FSDirectory.resolvePath(testPath, components, fsd);
String realPath = FSDirectory.resolvePath(testPath, fsd);
fail("Path should not be resolved:" + realPath);
} catch (IOException e) {
assertTrue(e instanceof FileNotFoundException);