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HDFS-6922. Add LazyPersist flag to INodeFile, save it in FsImage and edit logs. (Arpit Agarwal)

This commit is contained in:
arp 2014-08-27 15:12:19 -07:00 committed by arp7
parent 7f49537ba1
commit 042b33f20b
21 changed files with 107 additions and 33 deletions
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3
hadoop-hdfs-project/hadoop-hdfs/CHANGES-HDFS-6581.txt
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@ -4,5 +4,6 @@
HDFS-6924. Add new RAM_DISK storage type. (Arpit Agarwal)
HDFS-6922. Add LazyPersist flag to INodeFile, save it in FsImage and
edit logs. (Arpit Agarwal)

6
hadoop-hdfs-project/hadoop-hdfs/src/main/java/org/apache/hadoop/hdfs/server/blockmanagement/BlockCollection.java
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@ -54,6 +54,12 @@ public interface BlockCollection {
*/
public long getPreferredBlockSize();
/**
* Return true if the file was created with {@Link CreateFlag#LAZY_PERSIST}.
* @return
*/
public boolean getLazyPersistFlag();
/**
* Get block replication for the collection
* @return block replication value

17
hadoop-hdfs-project/hadoop-hdfs/src/main/java/org/apache/hadoop/hdfs/server/namenode/FSDirectory.java
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@ -278,6 +278,7 @@ public class FSDirectory implements Closeable {
*/
INodeFile addFile(String path, PermissionStatus permissions,
short replication, long preferredBlockSize,
boolean isLazyPersist,
String clientName, String clientMachine)
throws FileAlreadyExistsException, QuotaExceededException,
UnresolvedLinkException, SnapshotAccessControlException, AclException {
@ -285,7 +286,7 @@ public class FSDirectory implements Closeable {
long modTime = now();
INodeFile newNode = new INodeFile(namesystem.allocateNewInodeId(), null,
permissions, modTime, modTime, BlockInfo.EMPTY_ARRAY, replication,
preferredBlockSize);
preferredBlockSize, isLazyPersist);
newNode.toUnderConstruction(clientName, clientMachine);
boolean added = false;
@ -315,6 +316,7 @@ public class FSDirectory implements Closeable {
long modificationTime,
long atime,
long preferredBlockSize,
boolean isLazyPersist,
boolean underConstruction,
String clientName,
String clientMachine) {
@ -323,12 +325,12 @@ public class FSDirectory implements Closeable {
if (underConstruction) {
newNode = new INodeFile(id, null, permissions, modificationTime,
modificationTime, BlockInfo.EMPTY_ARRAY, replication,
preferredBlockSize);
preferredBlockSize, isLazyPersist);
newNode.toUnderConstruction(clientName, clientMachine);
} else {
newNode = new INodeFile(id, null, permissions, modificationTime, atime,
BlockInfo.EMPTY_ARRAY, replication, preferredBlockSize);
BlockInfo.EMPTY_ARRAY, replication, preferredBlockSize, isLazyPersist);
}
try {
@ -2283,11 +2285,13 @@ public class FSDirectory implements Closeable {
long size = 0; // length is zero for directories
short replication = 0;
long blocksize = 0;
boolean isLazyPersist = false;
if (node.isFile()) {
final INodeFile fileNode = node.asFile();
size = fileNode.computeFileSize(snapshot);
replication = fileNode.getFileReplication(snapshot);
blocksize = fileNode.getPreferredBlockSize();
isLazyPersist = fileNode.getLazyPersistFlag();
}
int childrenNum = node.isDirectory() ?
node.asDirectory().getChildrenNum(snapshot) : 0;
@ -2300,7 +2304,7 @@ public class FSDirectory implements Closeable {
node.isDirectory(),
replication,
blocksize,
false,
isLazyPersist,
node.getModificationTime(snapshot),
node.getAccessTime(snapshot),
getPermissionForFileStatus(node, snapshot),
@ -2322,6 +2326,7 @@ public class FSDirectory implements Closeable {
long size = 0; // length is zero for directories
short replication = 0;
long blocksize = 0;
boolean isLazyPersist = false;
LocatedBlocks loc = null;
final FileEncryptionInfo feInfo = isRawPath ? null :
getFileEncryptionInfo(node, snapshot);
@ -2329,7 +2334,7 @@ public class FSDirectory implements Closeable {
final INodeFile fileNode = node.asFile();
size = fileNode.computeFileSize(snapshot);
replication = fileNode.getFileReplication(snapshot);
blocksize = fileNode.getPreferredBlockSize();
isLazyPersist = fileNode.getLazyPersistFlag();
final boolean inSnapshot = snapshot != Snapshot.CURRENT_STATE_ID;
final boolean isUc = !inSnapshot && fileNode.isUnderConstruction();
@ -2348,7 +2353,7 @@ public class FSDirectory implements Closeable {
HdfsLocatedFileStatus status =
new HdfsLocatedFileStatus(size, node.isDirectory(), replication,
blocksize, false, node.getModificationTime(snapshot),
blocksize, isLazyPersist, node.getModificationTime(snapshot),
node.getAccessTime(snapshot),
getPermissionForFileStatus(node, snapshot),
node.getUserName(snapshot), node.getGroupName(snapshot),

2
hadoop-hdfs-project/hadoop-hdfs/src/main/java/org/apache/hadoop/hdfs/server/namenode/FSEditLog.java
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@ -697,6 +697,7 @@ public class FSEditLog implements LogsPurgeable {
.setModificationTime(newNode.getModificationTime())
.setAccessTime(newNode.getAccessTime())
.setBlockSize(newNode.getPreferredBlockSize())
.setLazyPersistFlag(newNode.getLazyPersistFlag())
.setBlocks(newNode.getBlocks())
.setPermissionStatus(permissions)
.setClientName(newNode.getFileUnderConstructionFeature().getClientName())
@ -727,6 +728,7 @@ public class FSEditLog implements LogsPurgeable {
.setModificationTime(newNode.getModificationTime())
.setAccessTime(newNode.getAccessTime())
.setBlockSize(newNode.getPreferredBlockSize())
.setLazyPersistFlag(newNode.getLazyPersistFlag())
.setBlocks(newNode.getBlocks())
.setPermissionStatus(newNode.getPermissionStatus());

3
hadoop-hdfs-project/hadoop-hdfs/src/main/java/org/apache/hadoop/hdfs/server/namenode/FSEditLogLoader.java
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@ -357,7 +357,8 @@ public class FSEditLogLoader {
path, addCloseOp.permissions, addCloseOp.aclEntries,
addCloseOp.xAttrs,
replication, addCloseOp.mtime, addCloseOp.atime,
addCloseOp.blockSize, true, addCloseOp.clientName,
addCloseOp.blockSize, addCloseOp.isLazyPersist,
true, addCloseOp.clientName,
addCloseOp.clientMachine);
fsNamesys.leaseManager.addLease(addCloseOp.clientName, path);

23
hadoop-hdfs-project/hadoop-hdfs/src/main/java/org/apache/hadoop/hdfs/server/namenode/FSEditLogOp.java
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@ -401,6 +401,7 @@ public abstract class FSEditLogOp {
long mtime;
long atime;
long blockSize;
boolean isLazyPersist;
Block[] blocks;
PermissionStatus permissions;
List<AclEntry> aclEntries;
@ -448,6 +449,11 @@ public abstract class FSEditLogOp {
return (T)this;
}
<T extends AddCloseOp> T setLazyPersistFlag(boolean isLazyPersist) {
this.isLazyPersist = isLazyPersist;
return (T)this;
}
<T extends AddCloseOp> T setBlocks(Block[] blocks) {
if (blocks.length > MAX_BLOCKS) {
throw new RuntimeException("Can't have more than " + MAX_BLOCKS +
@ -495,6 +501,7 @@ public abstract class FSEditLogOp {
FSImageSerialization.writeLong(mtime, out);
FSImageSerialization.writeLong(atime, out);
FSImageSerialization.writeLong(blockSize, out);
FSImageSerialization.writeInt((isLazyPersist ? 1 : 0), out);
new ArrayWritable(Block.class, blocks).write(out);
permissions.write(out);
@ -562,6 +569,13 @@ public abstract class FSEditLogOp {
this.blockSize = readLong(in);
}
if (NameNodeLayoutVersion.supports(
NameNodeLayoutVersion.Feature.LAZY_PERSIST_FILES, logVersion)) {
this.isLazyPersist = (FSImageSerialization.readInt(in) != 0);
} else {
this.isLazyPersist = false;
}
this.blocks = readBlocks(in, logVersion);
this.permissions = PermissionStatus.read(in);
@ -615,6 +629,8 @@ public abstract class FSEditLogOp {
builder.append(atime);
builder.append(", blockSize=");
builder.append(blockSize);
builder.append(", lazyPersist");
builder.append(isLazyPersist);
builder.append(", blocks=");
builder.append(Arrays.toString(blocks));
builder.append(", permissions=");
@ -651,6 +667,8 @@ public abstract class FSEditLogOp {
Long.toString(atime));
XMLUtils.addSaxString(contentHandler, "BLOCKSIZE",
Long.toString(blockSize));
XMLUtils.addSaxString(contentHandler, "LAZY_PERSIST",
Boolean.toString(isLazyPersist));
XMLUtils.addSaxString(contentHandler, "CLIENT_NAME", clientName);
XMLUtils.addSaxString(contentHandler, "CLIENT_MACHINE", clientMachine);
for (Block b : blocks) {
@ -674,6 +692,11 @@ public abstract class FSEditLogOp {
this.mtime = Long.parseLong(st.getValue("MTIME"));
this.atime = Long.parseLong(st.getValue("ATIME"));
this.blockSize = Long.parseLong(st.getValue("BLOCKSIZE"));
String lazyPersistString = st.getValueOrNull("LAZY_PERSIST");
this.isLazyPersist =
lazyPersistString != null && Boolean.parseBoolean(lazyPersistString);
this.clientName = st.getValue("CLIENT_NAME");
this.clientMachine = st.getValue("CLIENT_MACHINE");
if (st.hasChildren("BLOCK")) {

9
hadoop-hdfs-project/hadoop-hdfs/src/main/java/org/apache/hadoop/hdfs/server/namenode/FSImageFormat.java
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@ -783,8 +783,11 @@ public class FSImageFormat {
if (counter != null) {
counter.increment();
}
// Images in the old format will not have the lazyPersist flag so it is
// safe to pass false always.
final INodeFile file = new INodeFile(inodeId, localName, permissions,
modificationTime, atime, blocks, replication, blockSize);
modificationTime, atime, blocks, replication, blockSize, false);
if (underConstruction) {
file.toUnderConstruction(clientName, clientMachine);
}
@ -884,8 +887,10 @@ public class FSImageFormat {
in.readShort());
final long preferredBlockSize = in.readLong();
// LazyPersist flag will not be present in old image formats and hence
// can be safely set to false always.
return new INodeFileAttributes.SnapshotCopy(name, permissions, null, modificationTime,
accessTime, replication, preferredBlockSize, null);
accessTime, replication, preferredBlockSize, false, null);
}
public INodeDirectoryAttributes loadINodeDirectoryAttributes(DataInput in)

6
hadoop-hdfs-project/hadoop-hdfs/src/main/java/org/apache/hadoop/hdfs/server/namenode/FSImageFormatPBINode.java
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@ -283,7 +283,8 @@ public final class FSImageFormatPBINode {
final INodeFile file = new INodeFile(n.getId(),
n.getName().toByteArray(), permissions, f.getModificationTime(),
f.getAccessTime(), blocks, replication, f.getPreferredBlockSize());
f.getAccessTime(), blocks, replication, f.getPreferredBlockSize(),
f.hasIsLazyPersist() ? f.getIsLazyPersist() : false);
if (f.hasAcl()) {
file.addAclFeature(new AclFeature(loadAclEntries(f.getAcl(),
@ -391,7 +392,8 @@ public final class FSImageFormatPBINode {
.setModificationTime(file.getModificationTime())
.setPermission(buildPermissionStatus(file, state.getStringMap()))
.setPreferredBlockSize(file.getPreferredBlockSize())
.setReplication(file.getFileReplication());
.setReplication(file.getFileReplication())
.setIsLazyPersist(file.getLazyPersistFlag());
AclFeature f = file.getAclFeature();
if (f != null) {

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

@ -146,14 +146,16 @@ public class FSImageSerialization {
int numLocs = in.readInt();
assert numLocs == 0 : "Unexpected block locations";
// Images in the pre-protobuf format will not have the lazyPersist flag,
// so it is safe to pass false always.
INodeFile file = new INodeFile(inodeId, name, perm, modificationTime,
modificationTime, blocks, blockReplication, preferredBlockSize);
modificationTime, blocks, blockReplication, preferredBlockSize, false);
file.toUnderConstruction(clientName, clientMachine);
return file;
}
// Helper function that writes an INodeUnderConstruction
// into the input stream
// into the output stream
//
static void writeINodeUnderConstruction(DataOutputStream out, INodeFile cons,
String path) throws IOException {

2
hadoop-hdfs-project/hadoop-hdfs/src/main/java/org/apache/hadoop/hdfs/server/namenode/FSNamesystem.java
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@ -2616,7 +2616,7 @@ public class FSNamesystem implements Namesystem, FSClusterStats,
if (parent != null && mkdirsRecursively(parent.toString(),
permissions, true, now())) {
newNode = dir.addFile(src, permissions, replication, blockSize,
holder, clientMachine);
isLazyPersist, holder, clientMachine);
}
if (newNode == null) {

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

@ -74,7 +74,9 @@ public class INodeFile extends INodeWithAdditionalFields
/** Format: [16 bits for replication][48 bits for PreferredBlockSize] */
static enum HeaderFormat {
PREFERRED_BLOCK_SIZE(null, 48, 1),
REPLICATION(PREFERRED_BLOCK_SIZE.BITS, 16, 1);
REPLICATION(PREFERRED_BLOCK_SIZE.BITS, 12, 1),
LAZY_PERSIST(REPLICATION.BITS, 4, 0);
private final LongBitFormat BITS;
@ -90,12 +92,18 @@ public class INodeFile extends INodeWithAdditionalFields
return PREFERRED_BLOCK_SIZE.BITS.retrieve(header);
}
static long toLong(long preferredBlockSize, short replication) {
static boolean getLazyPersistFlag(long header) {
return LAZY_PERSIST.BITS.retrieve(header) == 0 ? false : true;
}
static long toLong(long preferredBlockSize, short replication, boolean isLazyPersist) {
long h = 0;
h = PREFERRED_BLOCK_SIZE.BITS.combine(preferredBlockSize, h);
h = REPLICATION.BITS.combine(replication, h);
h = LAZY_PERSIST.BITS.combine(isLazyPersist ? 1 : 0, h);
return h;
}
}
private long header = 0L;
@ -104,9 +112,9 @@ public class INodeFile extends INodeWithAdditionalFields
INodeFile(long id, byte[] name, PermissionStatus permissions, long mtime,
long atime, BlockInfo[] blklist, short replication,
long preferredBlockSize) {
long preferredBlockSize, boolean isLazyPersist) {
super(id, name, permissions, mtime, atime);
header = HeaderFormat.toLong(preferredBlockSize, replication);
header = HeaderFormat.toLong(preferredBlockSize, replication, isLazyPersist);
this.blocks = blklist;
}
@ -160,7 +168,6 @@ public class INodeFile extends INodeWithAdditionalFields
return getFileUnderConstructionFeature() != null;
}
/** Convert this file to an {@link INodeFileUnderConstruction}. */
INodeFile toUnderConstruction(String clientName, String clientMachine) {
Preconditions.checkState(!isUnderConstruction(),
"file is already under construction");
@ -355,6 +362,11 @@ public class INodeFile extends INodeWithAdditionalFields
return HeaderFormat.getPreferredBlockSize(header);
}
@Override
public boolean getLazyPersistFlag() {
return HeaderFormat.getLazyPersistFlag(header);
}
@Override
public long getHeaderLong() {
return header;

11
hadoop-hdfs-project/hadoop-hdfs/src/main/java/org/apache/hadoop/hdfs/server/namenode/INodeFileAttributes.java
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@ -21,7 +21,6 @@ import org.apache.hadoop.classification.InterfaceAudience;
import org.apache.hadoop.fs.permission.PermissionStatus;
import org.apache.hadoop.hdfs.server.namenode.INodeFile.HeaderFormat;
import org.apache.hadoop.hdfs.server.namenode.XAttrFeature;
/**
* The attributes of a file.
*/
@ -32,6 +31,8 @@ public interface INodeFileAttributes extends INodeAttributes {
/** @return preferred block size in bytes */
public long getPreferredBlockSize();
public boolean getLazyPersistFlag();
/** @return the header as a long. */
public long getHeaderLong();
@ -45,10 +46,11 @@ public interface INodeFileAttributes extends INodeAttributes {
public SnapshotCopy(byte[] name, PermissionStatus permissions,
AclFeature aclFeature, long modificationTime, long accessTime,
short replication, long preferredBlockSize, XAttrFeature xAttrsFeature) {
short replication, long preferredBlockSize,
boolean isTransient, XAttrFeature xAttrsFeature) {
super(name, permissions, aclFeature, modificationTime, accessTime,
xAttrsFeature);
header = HeaderFormat.toLong(preferredBlockSize, replication);
header = HeaderFormat.toLong(preferredBlockSize, replication, isTransient);
}
public SnapshotCopy(INodeFile file) {
@ -66,6 +68,9 @@ public interface INodeFileAttributes extends INodeAttributes {
return HeaderFormat.getPreferredBlockSize(header);
}
@Override
public boolean getLazyPersistFlag() { return HeaderFormat.getLazyPersistFlag(header); }
@Override
public long getHeaderLong() {
return header;

4
hadoop-hdfs-project/hadoop-hdfs/src/main/java/org/apache/hadoop/hdfs/server/namenode/NameNodeLayoutVersion.java
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@ -65,7 +65,9 @@ public class NameNodeLayoutVersion {
public static enum Feature implements LayoutFeature {
ROLLING_UPGRADE(-55, -53, "Support rolling upgrade", false),
EDITLOG_LENGTH(-56, "Add length field to every edit log op"),
XATTRS(-57, "Extended attributes");
XATTRS(-57, "Extended attributes"),
LAZY_PERSIST_FILES(-58, "Support for optional lazy persistence of "
+ " files with reduced durability guarantees");
private final FeatureInfo info;

4
hadoop-hdfs-project/hadoop-hdfs/src/main/java/org/apache/hadoop/hdfs/server/namenode/snapshot/FSImageFormatPBSnapshot.java
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@ -220,7 +220,9 @@ public class FSImageFormatPBSnapshot {
copy = new INodeFileAttributes.SnapshotCopy(pbf.getName()
.toByteArray(), permission, acl, fileInPb.getModificationTime(),
fileInPb.getAccessTime(), (short) fileInPb.getReplication(),
fileInPb.getPreferredBlockSize(), xAttrs);
fileInPb.getPreferredBlockSize(),
fileInPb.hasIsLazyPersist() ? fileInPb.getIsLazyPersist() : false,
xAttrs);
}
FileDiff diff = new FileDiff(pbf.getSnapshotId(), copy, null,

1
hadoop-hdfs-project/hadoop-hdfs/src/main/java/org/apache/hadoop/hdfs/tools/offlineImageViewer/FSImageLoader.java
View File

@ -391,6 +391,7 @@ class FSImageLoader {
f.getPermission(), stringTable);
map.put("accessTime", f.getAccessTime());
map.put("blockSize", f.getPreferredBlockSize());
map.put("lazyPersist", f.getIsLazyPersist());
map.put("group", p.getGroupName());
map.put("length", getFileSize(f));
map.put("modificationTime", f.getModificationTime());

4
hadoop-hdfs-project/hadoop-hdfs/src/main/java/org/apache/hadoop/hdfs/tools/offlineImageViewer/PBImageXmlWriter.java
View File

@ -247,6 +247,10 @@ public final class PBImageXmlWriter {
.o("perferredBlockSize", f.getPreferredBlockSize())
.o("permission", dumpPermission(f.getPermission()));
if (f.hasIsLazyPersist()) {
o("lazyPersist", f.getIsLazyPersist());
}
if (f.getBlocksCount() > 0) {
out.print("<blocks>");
for (BlockProto b : f.getBlocksList()) {

1
hadoop-hdfs-project/hadoop-hdfs/src/main/proto/fsimage.proto
View File

@ -134,6 +134,7 @@ message INodeSection {
optional FileUnderConstructionFeature fileUC = 7;
optional AclFeatureProto acl = 8;
optional XAttrFeatureProto xAttrs = 9;
optional bool isLazyPersist = 10 [default = false];
}
message INodeDirectory {

4
hadoop-hdfs-project/hadoop-hdfs/src/test/java/org/apache/hadoop/hdfs/server/namenode/CreateEditsLog.java
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@ -82,7 +82,7 @@ public class CreateEditsLog {
}
final INodeFile inode = new INodeFile(inodeId.nextValue(), null,
p, 0L, 0L, blocks, replication, blockSize);
p, 0L, 0L, blocks, replication, blockSize, false);
inode.toUnderConstruction("", "");
// Append path to filename with information about blockIDs
@ -97,7 +97,7 @@ public class CreateEditsLog {
editLog.logMkDir(currentDir, dirInode);
}
INodeFile fileUc = new INodeFile(inodeId.nextValue(), null,
p, 0L, 0L, BlockInfo.EMPTY_ARRAY, replication, blockSize);
p, 0L, 0L, BlockInfo.EMPTY_ARRAY, replication, blockSize, false);
fileUc.toUnderConstruction("", "");
editLog.logOpenFile(filePath, fileUc, false);
editLog.logCloseFile(filePath, inode);

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

@ -194,7 +194,7 @@ public class TestEditLog {
for (int i = 0; i < numTransactions; i++) {
INodeFile inode = new INodeFile(namesystem.allocateNewInodeId(), null,
p, 0L, 0L, BlockInfo.EMPTY_ARRAY, replication, blockSize);
p, 0L, 0L, BlockInfo.EMPTY_ARRAY, replication, blockSize, false);
inode.toUnderConstruction("", "");
editLog.logOpenFile("/filename" + (startIndex + i), inode, false);

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

@ -423,7 +423,7 @@ public class TestFSPermissionChecker {
FsPermission.createImmutable(perm));
INodeFile inodeFile = new INodeFile(INodeId.GRANDFATHER_INODE_ID,
name.getBytes("UTF-8"), permStatus, 0L, 0L, null, REPLICATION,
PREFERRED_BLOCK_SIZE);
PREFERRED_BLOCK_SIZE, false);
parent.addChild(inodeFile);
return inodeFile;
}

8
hadoop-hdfs-project/hadoop-hdfs/src/test/java/org/apache/hadoop/hdfs/server/namenode/TestINodeFile.java
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@ -82,7 +82,7 @@ public class TestINodeFile {
INodeFile createINodeFile(short replication, long preferredBlockSize) {
return new INodeFile(INodeId.GRANDFATHER_INODE_ID, null, perm, 0L, 0L,
null, replication, preferredBlockSize);
null, replication, preferredBlockSize, false);
}
/**
* Test for the Replication value. Sets a value and checks if it was set
@ -259,7 +259,7 @@ public class TestINodeFile {
INodeFile[] iNodes = new INodeFile[nCount];
for (int i = 0; i < nCount; i++) {
iNodes[i] = new INodeFile(i, null, perm, 0L, 0L, null, replication,
preferredBlockSize);
preferredBlockSize, false);
iNodes[i].setLocalName(DFSUtil.string2Bytes(fileNamePrefix + i));
BlockInfo newblock = new BlockInfo(replication);
iNodes[i].addBlock(newblock);
@ -316,7 +316,7 @@ public class TestINodeFile {
{//cast from INodeFileUnderConstruction
final INode from = new INodeFile(
INodeId.GRANDFATHER_INODE_ID, null, perm, 0L, 0L, null, replication, 1024L);
INodeId.GRANDFATHER_INODE_ID, null, perm, 0L, 0L, null, replication, 1024L, false);
from.asFile().toUnderConstruction("client", "machine");
//cast to INodeFile, should success
@ -1079,7 +1079,7 @@ public class TestINodeFile {
public void testFileUnderConstruction() {
replication = 3;
final INodeFile file = new INodeFile(INodeId.GRANDFATHER_INODE_ID, null,
perm, 0L, 0L, null, replication, 1024L);
perm, 0L, 0L, null, replication, 1024L, false);
assertFalse(file.isUnderConstruction());
final String clientName = "client";