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HDFS-8450. Erasure Coding: Consolidate erasure coding zone related implementation into a single class (Contributed by Rakesh R)

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This commit is contained in:
Vinayakumar B 2015-06-11 10:48:02 +05:30
parent b7d6ea8e91
commit 98d340745b
11 changed files with 312 additions and 128 deletions
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3
hadoop-hdfs-project/hadoop-hdfs/CHANGES-HDFS-EC-7285.txt
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@ -293,3 +293,6 @@
HDFS-8556. Erasure Coding: Fix usage of 'createZone' (vinayakumarb)
HDFS-8571. Fix TestErasureCodingCli test (Vinayakumar B via waltersu4549)
HDFS-8450. Erasure Coding: Consolidate erasure coding zone related
implementation into a single class (Rakesh R via vinayakumarb)

34
hadoop-hdfs-project/hadoop-hdfs/src/main/java/org/apache/hadoop/hdfs/server/namenode/ErasureCodingZoneManager.java
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@ -60,14 +60,14 @@ public ErasureCodingZoneManager(FSDirectory dir) {
this.dir = dir;
}
ECSchema getECSchema(INodesInPath iip) throws IOException {
ErasureCodingZone ecZone = getECZone(iip);
ECSchema getErasureCodingSchema(INodesInPath iip) throws IOException {
ErasureCodingZone ecZone = getErasureCodingZone(iip);
return ecZone == null ? null : ecZone.getSchema();
}
ErasureCodingZone getECZone(INodesInPath iip) throws IOException {
ErasureCodingZone getErasureCodingZone(INodesInPath iip) throws IOException {
assert dir.hasReadLock();
Preconditions.checkNotNull(iip);
Preconditions.checkNotNull(iip, "INodes cannot be null");
List<INode> inodes = iip.getReadOnlyINodes();
for (int i = inodes.size() - 1; i >= 0; i--) {
final INode inode = inodes.get(i);
@ -90,8 +90,8 @@ ErasureCodingZone getECZone(INodesInPath iip) throws IOException {
DataInputStream dIn=new DataInputStream(bIn);
int cellSize = WritableUtils.readVInt(dIn);
String schemaName = WritableUtils.readString(dIn);
ECSchema schema = dir.getFSNamesystem().getECSchemaManager()
.getSchema(schemaName);
ECSchema schema = dir.getFSNamesystem()
.getErasureCodingSchemaManager().getSchema(schemaName);
return new ErasureCodingZone(dir.getInode(inode.getId())
.getFullPathName(), schema, cellSize);
}
@ -100,22 +100,22 @@ ErasureCodingZone getECZone(INodesInPath iip) throws IOException {
return null;
}
XAttr createErasureCodingZone(String src, ECSchema schema, int cellSize)
throws IOException {
List<XAttr> createErasureCodingZone(final INodesInPath srcIIP,
ECSchema schema, int cellSize) throws IOException {
assert dir.hasWriteLock();
final INodesInPath srcIIP = dir.getINodesInPath4Write(src, false);
Preconditions.checkNotNull(srcIIP, "INodes cannot be null");
String src = srcIIP.getPath();
if (dir.isNonEmptyDirectory(srcIIP)) {
throw new IOException(
"Attempt to create an erasure coding zone for a " +
"non-empty directory.");
"non-empty directory " + src);
}
if (srcIIP != null &&
srcIIP.getLastINode() != null &&
if (srcIIP.getLastINode() != null &&
!srcIIP.getLastINode().isDirectory()) {
throw new IOException("Attempt to create an erasure coding zone " +
"for a file.");
"for a file " + src);
}
if (getECSchema(srcIIP) != null) {
if (getErasureCodingSchema(srcIIP) != null) {
throw new IOException("Directory " + src + " is already in an " +
"erasure coding zone.");
}
@ -147,14 +147,14 @@ XAttr createErasureCodingZone(String src, ECSchema schema, int cellSize)
xattrs.add(ecXAttr);
FSDirXAttrOp.unprotectedSetXAttrs(dir, src, xattrs,
EnumSet.of(XAttrSetFlag.CREATE));
return ecXAttr;
return xattrs;
}
void checkMoveValidity(INodesInPath srcIIP, INodesInPath dstIIP, String src)
throws IOException {
assert dir.hasReadLock();
final ErasureCodingZone srcZone = getECZone(srcIIP);
final ErasureCodingZone dstZone = getECZone(dstIIP);
final ErasureCodingZone srcZone = getErasureCodingZone(srcIIP);
final ErasureCodingZone dstZone = getErasureCodingZone(dstIIP);
if (srcZone != null && srcZone.getDir().equals(src) && dstZone == null) {
return;
}

217
hadoop-hdfs-project/hadoop-hdfs/src/main/java/org/apache/hadoop/hdfs/server/namenode/FSDirErasureCodingOp.java Normal file
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@ -0,0 +1,217 @@
/**
* Licensed to the Apache Software Foundation (ASF) under one
* or more contributor license agreements. See the NOTICE file
* distributed with this work for additional information
* regarding copyright ownership. The ASF licenses this file
* to you under the Apache License, Version 2.0 (the
* "License"); you may not use this file except in compliance
* with the License. You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
package org.apache.hadoop.hdfs.server.namenode;
import java.io.IOException;
import java.util.List;
import org.apache.hadoop.fs.XAttr;
import org.apache.hadoop.fs.permission.FsAction;
import org.apache.hadoop.hdfs.protocol.ErasureCodingZone;
import org.apache.hadoop.hdfs.protocol.HdfsFileStatus;
import org.apache.hadoop.io.erasurecode.ECSchema;
/**
* Helper class to perform erasure coding related operations.
*/
final class FSDirErasureCodingOp {
/**
* Private constructor for preventing FSDirErasureCodingOp object
* creation. Static-only class.
*/
private FSDirErasureCodingOp() {}
/**
* Create an erasure coding zone on directory src.
*
* @param fsn namespace
* @param srcArg the path of a directory which will be the root of the
* erasure coding zone. The directory must be empty.
* @param schema ECSchema for the erasure coding zone
* @param cellSize Cell size of stripe
* @param logRetryCache whether to record RPC ids in editlog for retry
* cache rebuilding
* @return {@link HdfsFileStatus}
* @throws IOException
*/
static HdfsFileStatus createErasureCodingZone(final FSNamesystem fsn,
final String srcArg, final ECSchema schema, final int cellSize,
final boolean logRetryCache) throws IOException {
assert fsn.hasWriteLock();
String src = srcArg;
FSPermissionChecker pc = null;
byte[][] pathComponents = null;
pathComponents = FSDirectory.getPathComponentsForReservedPath(src);
pc = fsn.getPermissionChecker();
FSDirectory fsd = fsn.getFSDirectory();
src = fsd.resolvePath(pc, src, pathComponents);
final INodesInPath iip;
List<XAttr> xAttrs;
fsd.writeLock();
try {
iip = fsd.getINodesInPath4Write(src, false);
xAttrs = fsn.getErasureCodingZoneManager().createErasureCodingZone(
iip, schema, cellSize);
} finally {
fsd.writeUnlock();
}
fsn.getEditLog().logSetXAttrs(src, xAttrs, logRetryCache);
return fsd.getAuditFileInfo(iip);
}
/**
* Get the erasure coding zone information for specified path.
*
* @param fsn namespace
* @param src path
* @return {@link ErasureCodingZone}
* @throws IOException
*/
static ErasureCodingZone getErasureCodingZone(final FSNamesystem fsn,
final String src) throws IOException {
assert fsn.hasReadLock();
final INodesInPath iip = getINodesInPath(fsn, src);
return getErasureCodingZoneForPath(fsn, iip);
}
/**
* Get erasure coding zone information for specified path.
*
* @param fsn namespace
* @param iip inodes in the path containing the file
* @return {@link ErasureCodingZone}
* @throws IOException
*/
static ErasureCodingZone getErasureCodingZone(final FSNamesystem fsn,
final INodesInPath iip) throws IOException {
assert fsn.hasReadLock();
return getErasureCodingZoneForPath(fsn, iip);
}
/**
* Check if the file is in erasure coding zone.
*
* @param fsn namespace
* @param srcArg path
* @return true represents the file is in erasure coding zone, false otw
* @throws IOException
*/
static boolean isInErasureCodingZone(final FSNamesystem fsn,
final String srcArg) throws IOException {
assert fsn.hasReadLock();
final INodesInPath iip = getINodesInPath(fsn, srcArg);
return getErasureCodingSchemaForPath(fsn, iip) != null;
}
/**
* Check if the file is in erasure coding zone.
*
* @param fsn namespace
* @param iip inodes in the path containing the file
* @return true represents the file is in erasure coding zone, false otw
* @throws IOException
*/
static boolean isInErasureCodingZone(final FSNamesystem fsn,
final INodesInPath iip) throws IOException {
return getErasureCodingSchema(fsn, iip) != null;
}
/**
* Get erasure coding schema.
*
* @param fsn namespace
* @param iip inodes in the path containing the file
* @return {@link ECSchema}
* @throws IOException
*/
static ECSchema getErasureCodingSchema(final FSNamesystem fsn,
final INodesInPath iip) throws IOException {
assert fsn.hasReadLock();
return getErasureCodingSchemaForPath(fsn, iip);
}
/**
* Get available erasure coding schemas.
*
* @param fsn namespace
* @return {@link ECSchema} array
*/
static ECSchema[] getErasureCodingSchemas(final FSNamesystem fsn)
throws IOException {
assert fsn.hasReadLock();
return fsn.getErasureCodingSchemaManager().getSchemas();
}
/**
* Get the ECSchema specified by the name.
*
* @param fsn namespace
* @param schemaName schema name
* @return {@link ECSchema}
*/
static ECSchema getErasureCodingSchema(final FSNamesystem fsn,
final String schemaName) throws IOException {
assert fsn.hasReadLock();
return fsn.getErasureCodingSchemaManager().getSchema(schemaName);
}
private static INodesInPath getINodesInPath(final FSNamesystem fsn,
final String srcArg) throws IOException {
String src = srcArg;
final byte[][] pathComponents = FSDirectory
.getPathComponentsForReservedPath(src);
final FSDirectory fsd = fsn.getFSDirectory();
final FSPermissionChecker pc = fsn.getPermissionChecker();
src = fsd.resolvePath(pc, src, pathComponents);
INodesInPath iip = fsd.getINodesInPath(src, true);
if (fsn.isPermissionEnabled()) {
fsn.getFSDirectory().checkPathAccess(pc, iip, FsAction.READ);
}
return iip;
}
private static ErasureCodingZone getErasureCodingZoneForPath(
final FSNamesystem fsn, final INodesInPath iip) throws IOException {
final FSDirectory fsd = fsn.getFSDirectory();
fsd.readLock();
try {
return fsn.getErasureCodingZoneManager().getErasureCodingZone(iip);
} finally {
fsd.readUnlock();
}
}
private static ECSchema getErasureCodingSchemaForPath(final FSNamesystem fsn,
final INodesInPath iip) throws IOException {
final FSDirectory fsd = fsn.getFSDirectory();
fsd.readLock();
try {
return fsn.getErasureCodingZoneManager().getErasureCodingSchema(iip);
} finally {
fsd.readUnlock();
}
}
}

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

@ -386,7 +386,8 @@ static HdfsFileStatus createFileStatus(
final FileEncryptionInfo feInfo = isRawPath ? null :
fsd.getFileEncryptionInfo(node, snapshot, iip);
final ErasureCodingZone ecZone = fsd.getECZone(iip);
final ErasureCodingZone ecZone = FSDirErasureCodingOp.getErasureCodingZone(
fsd.getFSNamesystem(), iip);
final ECSchema schema = ecZone != null ? ecZone.getSchema() : null;
final int cellSize = ecZone != null ? ecZone.getCellSize() : 0;
@ -468,7 +469,8 @@ private static HdfsLocatedFileStatus createLocatedFileStatus(
}
int childrenNum = node.isDirectory() ?
node.asDirectory().getChildrenNum(snapshot) : 0;
final ErasureCodingZone ecZone = fsd.getECZone(iip);
final ErasureCodingZone ecZone = FSDirErasureCodingOp.getErasureCodingZone(
fsd.getFSNamesystem(), iip);
final ECSchema schema = ecZone != null ? ecZone.getSchema() : null;
final int cellSize = ecZone != null ? ecZone.getCellSize() : 0;

10
hadoop-hdfs-project/hadoop-hdfs/src/main/java/org/apache/hadoop/hdfs/server/namenode/FSDirWriteFileOp.java
View File

@ -495,7 +495,8 @@ static INodeFile addFileForEditLog(
INodesInPath iip = fsd.addINode(existing, newNode);
if (iip != null) {
// check if the file is in an EC zone
if (fsd.isInECZone(iip)) {
if (FSDirErasureCodingOp.isInErasureCodingZone(fsd.getFSNamesystem(),
iip)) {
newNode.addStripedBlocksFeature();
}
if (aclEntries != null) {
@ -530,7 +531,8 @@ private static BlockInfo addBlock(FSDirectory fsd, String path,
// associate new last block for the file
final BlockInfo blockInfo;
if (isStriped) {
ECSchema ecSchema = fsd.getECSchema(inodesInPath);
ECSchema ecSchema = FSDirErasureCodingOp.getErasureCodingSchema(
fsd.getFSNamesystem(), inodesInPath);
short numDataUnits = (short) ecSchema.getNumDataUnits();
short numParityUnits = (short) ecSchema.getNumParityUnits();
short numLocations = (short) (numDataUnits + numParityUnits);
@ -586,7 +588,9 @@ private static INodesInPath addFile(
fsd.writeLock();
try {
newiip = fsd.addINode(existing, newNode);
if (newiip != null && fsd.isInECZone(newiip)) {
if (newiip != null
&& FSDirErasureCodingOp.isInErasureCodingZone(fsd.getFSNamesystem(),
newiip)) {
newNode.addStripedBlocksFeature();
}
} finally {

34
hadoop-hdfs-project/hadoop-hdfs/src/main/java/org/apache/hadoop/hdfs/server/namenode/FSDirectory.java
View File

@ -40,7 +40,6 @@
import org.apache.hadoop.hdfs.XAttrHelper;
import org.apache.hadoop.hdfs.protocol.Block;
import org.apache.hadoop.hdfs.protocol.BlockStoragePolicy;
import org.apache.hadoop.hdfs.protocol.ErasureCodingZone;
import org.apache.hadoop.hdfs.protocol.EncryptionZone;
import org.apache.hadoop.hdfs.protocol.FSLimitException.MaxDirectoryItemsExceededException;
import org.apache.hadoop.hdfs.protocol.FSLimitException.PathComponentTooLongException;
@ -58,7 +57,6 @@
import org.apache.hadoop.hdfs.server.namenode.INode.BlocksMapUpdateInfo;
import org.apache.hadoop.hdfs.util.ByteArray;
import org.apache.hadoop.hdfs.util.EnumCounters;
import org.apache.hadoop.io.erasurecode.ECSchema;
import org.apache.hadoop.security.AccessControlException;
import org.apache.hadoop.security.UserGroupInformation;
import org.slf4j.Logger;
@ -1225,38 +1223,6 @@ FileEncryptionInfo getFileEncryptionInfo(INode inode, int snapshotId,
}
}
XAttr createErasureCodingZone(String src, ECSchema schema, int cellSize)
throws IOException {
writeLock();
try {
return ecZoneManager.createErasureCodingZone(src, schema, cellSize);
} finally {
writeUnlock();
}
}
public boolean isInECZone(INodesInPath iip) throws IOException {
return getECSchema(iip) != null;
}
ECSchema getECSchema(INodesInPath iip) throws IOException {
readLock();
try {
return ecZoneManager.getECSchema(iip);
} finally {
readUnlock();
}
}
ErasureCodingZone getECZone(INodesInPath iip) throws IOException {
readLock();
try {
return ecZoneManager.getECZone(iip);
} finally {
readUnlock();
}
}
static INode resolveLastINode(INodesInPath iip) throws FileNotFoundException {
INode inode = iip.getLastINode();
if (inode == null) {

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

@ -417,8 +417,9 @@ private long applyEditLogOp(FSEditLogOp op, FSDirectory fsDir,
// Update the salient file attributes.
newFile.setAccessTime(addCloseOp.atime, Snapshot.CURRENT_STATE_ID);
newFile.setModificationTime(addCloseOp.mtime, Snapshot.CURRENT_STATE_ID);
updateBlocks(fsDir, addCloseOp, iip, newFile,
fsDir.getECSchema(iip), fsDir.isInECZone(iip));
ECSchema ecSchema = FSDirErasureCodingOp.getErasureCodingSchema(
fsDir.getFSNamesystem(), iip);
updateBlocks(fsDir, addCloseOp, iip, newFile, ecSchema);
break;
}
case OP_CLOSE: {
@ -438,8 +439,9 @@ private long applyEditLogOp(FSEditLogOp op, FSDirectory fsDir,
// Update the salient file attributes.
file.setAccessTime(addCloseOp.atime, Snapshot.CURRENT_STATE_ID);
file.setModificationTime(addCloseOp.mtime, Snapshot.CURRENT_STATE_ID);
updateBlocks(fsDir, addCloseOp, iip, file,
fsDir.getECSchema(iip), fsDir.isInECZone(iip));
ECSchema ecSchema = FSDirErasureCodingOp.getErasureCodingSchema(
fsDir.getFSNamesystem(), iip);
updateBlocks(fsDir, addCloseOp, iip, file, ecSchema);
// Now close the file
if (!file.isUnderConstruction() &&
@ -497,8 +499,9 @@ private long applyEditLogOp(FSEditLogOp op, FSDirectory fsDir,
INodesInPath iip = fsDir.getINodesInPath(path, true);
INodeFile oldFile = INodeFile.valueOf(iip.getLastINode(), path);
// Update in-memory data structures
updateBlocks(fsDir, updateOp, iip, oldFile,
fsDir.getECSchema(iip), fsDir.isInECZone(iip));
ECSchema ecSchema = FSDirErasureCodingOp.getErasureCodingSchema(
fsDir.getFSNamesystem(), iip);
updateBlocks(fsDir, updateOp, iip, oldFile, ecSchema);
if (toAddRetryCache) {
fsNamesys.addCacheEntry(updateOp.rpcClientId, updateOp.rpcCallId);
@ -515,8 +518,9 @@ private long applyEditLogOp(FSEditLogOp op, FSDirectory fsDir,
INodesInPath iip = fsDir.getINodesInPath(path, true);
INodeFile oldFile = INodeFile.valueOf(iip.getLastINode(), path);
// add the new block to the INodeFile
addNewBlock(addBlockOp, oldFile,
fsDir.getECSchema(iip), fsDir.isInECZone(iip));
ECSchema ecSchema = FSDirErasureCodingOp.getErasureCodingSchema(
fsDir.getFSNamesystem(), iip);
addNewBlock(addBlockOp, oldFile, ecSchema);
break;
}
case OP_SET_REPLICATION: {
@ -957,8 +961,7 @@ private static String formatEditLogReplayError(EditLogInputStream in,
/**
* Add a new block into the given INodeFile
*/
private void addNewBlock(AddBlockOp op, INodeFile file,
ECSchema schema, boolean isStriped)
private void addNewBlock(AddBlockOp op, INodeFile file, ECSchema ecSchema)
throws IOException {
BlockInfo[] oldBlocks = file.getBlocks();
Block pBlock = op.getPenultimateBlock();
@ -986,8 +989,9 @@ private void addNewBlock(AddBlockOp op, INodeFile file,
}
// add the new block
final BlockInfo newBlockInfo;
boolean isStriped = ecSchema != null;
if (isStriped) {
newBlockInfo = new BlockInfoStripedUnderConstruction(newBlock, schema);
newBlockInfo = new BlockInfoStripedUnderConstruction(newBlock, ecSchema);
} else {
newBlockInfo = new BlockInfoContiguousUnderConstruction(newBlock,
file.getPreferredBlockReplication());
@ -1002,8 +1006,7 @@ private void addNewBlock(AddBlockOp op, INodeFile file,
* @throws IOException
*/
private void updateBlocks(FSDirectory fsDir, BlockListUpdatingOp op,
INodesInPath iip, INodeFile file, ECSchema schema,
boolean isStriped) throws IOException {
INodesInPath iip, INodeFile file, ECSchema ecSchema) throws IOException {
// Update its block list
BlockInfo[] oldBlocks = file.getBlocks();
Block[] newBlocks = op.getBlocks();
@ -1062,6 +1065,7 @@ private void updateBlocks(FSDirectory fsDir, BlockListUpdatingOp op,
throw new IOException("Trying to delete non-existant block " + oldBlock);
}
} else if (newBlocks.length > oldBlocks.length) {
final boolean isStriped = ecSchema != null;
// We're adding blocks
for (int i = oldBlocks.length; i < newBlocks.length; i++) {
Block newBlock = newBlocks[i];
@ -1071,7 +1075,7 @@ private void updateBlocks(FSDirectory fsDir, BlockListUpdatingOp op,
// what about an old-version fsync() where fsync isn't called
// until several blocks in?
if (isStriped) {
newBI = new BlockInfoStripedUnderConstruction(newBlock, schema);
newBI = new BlockInfoStripedUnderConstruction(newBlock, ecSchema);
} else {
newBI = new BlockInfoContiguousUnderConstruction(newBlock,
file.getPreferredBlockReplication());

77
hadoop-hdfs-project/hadoop-hdfs/src/main/java/org/apache/hadoop/hdfs/server/namenode/FSNamesystem.java
View File

@ -2408,7 +2408,7 @@ private HdfsFileStatus startFileInt(final String src,
readLock();
try {
checkOperation(OperationCategory.READ);
if (!isInECZone(src)) {
if (!FSDirErasureCodingOp.isInErasureCodingZone(this, src)) {
blockManager.verifyReplication(src, replication, clientMachine);
}
} finally {
@ -3675,7 +3675,8 @@ void commitOrCompleteLastBlock(
final long diff;
final short replicationFactor;
if (fileINode.isStriped()) {
final ECSchema ecSchema = dir.getECSchema(iip);
final ECSchema ecSchema = FSDirErasureCodingOp.getErasureCodingSchema(
this, iip);
final short numDataUnits = (short) ecSchema.getNumDataUnits();
final short numParityUnits = (short) ecSchema.getNumParityUnits();
@ -6670,11 +6671,16 @@ public CacheManager getCacheManager() {
return cacheManager;
}
/** @return the schema manager. */
public ErasureCodingSchemaManager getECSchemaManager() {
/** @return the ErasureCodingSchemaManager. */
public ErasureCodingSchemaManager getErasureCodingSchemaManager() {
return ecSchemaManager;
}
/** @return the ErasureCodingZoneManager. */
public ErasureCodingZoneManager getErasureCodingZoneManager() {
return dir.ecZoneManager;
}
@Override // NameNodeMXBean
public String getCorruptFiles() {
List<String> list = new ArrayList<String>();
@ -7579,47 +7585,25 @@ BatchedListEntries<EncryptionZone> listEncryptionZones(long prevId)
void createErasureCodingZone(final String srcArg, final ECSchema schema,
int cellSize, final boolean logRetryCache) throws IOException,
UnresolvedLinkException, SafeModeException, AccessControlException {
String src = srcArg;
checkSuperuserPrivilege();
checkOperation(OperationCategory.WRITE);
HdfsFileStatus resultingStat = null;
FSPermissionChecker pc = null;
byte[][] pathComponents = null;
boolean success = false;
try {
checkSuperuserPrivilege();
checkOperation(OperationCategory.WRITE);
pathComponents =
FSDirectory.getPathComponentsForReservedPath(src);
pc = getPermissionChecker();
} catch (Throwable e) {
logAuditEvent(success, "createErasureCodingZone", srcArg);
throw e;
}
writeLock();
try {
checkSuperuserPrivilege();
checkOperation(OperationCategory.WRITE);
checkNameNodeSafeMode("Cannot create erasure coding zone on " + src);
src = dir.resolvePath(pc, src, pathComponents);
final XAttr ecXAttr = dir.createErasureCodingZone(src, schema, cellSize);
List<XAttr> xAttrs = Lists.newArrayListWithCapacity(1);
xAttrs.add(ecXAttr);
getEditLog().logSetXAttrs(src, xAttrs, logRetryCache);
final INodesInPath iip = dir.getINodesInPath4Write(src, false);
resultingStat = dir.getAuditFileInfo(iip);
checkNameNodeSafeMode("Cannot create erasure coding zone on " + srcArg);
resultingStat = FSDirErasureCodingOp.createErasureCodingZone(this,
srcArg, schema, cellSize, logRetryCache);
success = true;
} finally {
writeUnlock();
if (success) {
getEditLog().logSync();
}
logAuditEvent(success, "createErasureCodingZone", srcArg, null,
resultingStat);
}
getEditLog().logSync();
logAuditEvent(success, "createErasureCodingZone", srcArg, null, resultingStat);
}
private boolean isInECZone(String src) throws IOException {
byte[][] pathComponents = FSDirectory.getPathComponentsForReservedPath(src);
src = FSDirectory.resolvePath(src, pathComponents, dir);
final INodesInPath iip = dir.getINodesInPath(src, true);
return dir.isInECZone(iip);
}
/**
@ -7638,15 +7622,15 @@ ErasureCodingZone getErasureCodingZone(String src)
}
/**
* Get available ECSchemas
* Get available erasure coding schemas
*/
ECSchema[] getECSchemas() throws IOException {
ECSchema[] getErasureCodingSchemas() throws IOException {
checkOperation(OperationCategory.READ);
waitForLoadingFSImage();
readLock();
try {
checkOperation(OperationCategory.READ);
return ecSchemaManager.getSchemas();
return FSDirErasureCodingOp.getErasureCodingSchemas(this);
} finally {
readUnlock();
}
@ -7655,13 +7639,13 @@ ECSchema[] getECSchemas() throws IOException {
/**
* Get the ECSchema specified by the name
*/
ECSchema getECSchema(String schemaName) throws IOException {
ECSchema getErasureCodingSchema(String schemaName) throws IOException {
checkOperation(OperationCategory.READ);
waitForLoadingFSImage();
readLock();
try {
checkOperation(OperationCategory.READ);
return ecSchemaManager.getSchema(schemaName);
return FSDirErasureCodingOp.getErasureCodingSchema(this, schemaName);
} finally {
readUnlock();
}
@ -7854,16 +7838,7 @@ private static void enableAsyncAuditLog() {
@Override
public ErasureCodingZone getErasureCodingZoneForPath(String src)
throws IOException {
final byte[][] pathComponents = FSDirectory
.getPathComponentsForReservedPath(src);
final FSPermissionChecker pc = getPermissionChecker();
src = dir.resolvePath(pc, src, pathComponents);
final INodesInPath iip = dir.getINodesInPath(src, true);
if (isPermissionEnabled) {
dir.checkPathAccess(pc, iip, FsAction.READ);
}
return dir.getECZone(iip);
return FSDirErasureCodingOp.getErasureCodingZone(this, src);
}
}

2
hadoop-hdfs-project/hadoop-hdfs/src/main/java/org/apache/hadoop/hdfs/server/namenode/NameNodeRpcServer.java
View File

@ -2037,7 +2037,7 @@ public void removeSpanReceiver(long id) throws IOException {
@Override // ClientProtocol
public ECSchema[] getECSchemas() throws IOException {
checkNNStartup();
return namesystem.getECSchemas();
return namesystem.getErasureCodingSchemas();
}
@Override // ClientProtocol

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

@ -572,9 +572,17 @@ private void collectBlocksSummary(String parent, HdfsFileStatus file, Result res
// count expected replicas
short targetFileReplication;
if(file.getReplication() == 0) {
INode inode = namenode.getNamesystem().getFSDirectory().getINode(path);
INodesInPath iip = INodesInPath.fromINode(inode);
ECSchema ecSchema = namenode.getNamesystem().getFSDirectory().getECSchema(iip);
final FSNamesystem fsn = namenode.getNamesystem();
final ECSchema ecSchema;
fsn.readLock();
try {
INode inode = namenode.getNamesystem().getFSDirectory()
.getINode(path);
INodesInPath iip = INodesInPath.fromINode(inode);
ecSchema = FSDirErasureCodingOp.getErasureCodingSchema(fsn, iip);
} finally {
fsn.readUnlock();
}
targetFileReplication = (short) (ecSchema.getNumDataUnits() + ecSchema.getNumParityUnits());
} else {
targetFileReplication = file.getReplication();

9
hadoop-hdfs-project/hadoop-hdfs/src/test/java/org/apache/hadoop/hdfs/server/namenode/NameNodeAdapter.java
View File

@ -71,8 +71,13 @@ public static LocatedBlocks getBlockLocations(NameNode namenode,
public static HdfsFileStatus getFileInfo(NameNode namenode, String src,
boolean resolveLink) throws AccessControlException, UnresolvedLinkException,
StandbyException, IOException {
return FSDirStatAndListingOp.getFileInfo(namenode.getNamesystem()
.getFSDirectory(), src, resolveLink);
namenode.getNamesystem().readLock();
try {
return FSDirStatAndListingOp.getFileInfo(namenode.getNamesystem()
.getFSDirectory(), src, resolveLink);
} finally {
namenode.getNamesystem().readUnlock();
}
}
public static boolean mkdirs(NameNode namenode, String src,