svn merge -c -1432788 for reverting HDFS-4098. Add FileWithLink, INodeFileUnderConstructionWithLink and INodeFileUnderConstructionSnapshot in order to support append to snapshotted files.
git-svn-id: https://svn.apache.org/repos/asf/hadoop/common/branches/HDFS-2802@1433284 13f79535-47bb-0310-9956-ffa450edef68
This commit is contained in:
Tsz-wo Sze
parent
686e13db2f
commit
397835acdf
@ -101,9 +101,5 @@ Branch-2802 Snapshot (Unreleased)
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HDFS-4245. Include snapshot related operations in TestOfflineEditsViewer.
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(Jing Zhao via szetszwo)
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HDFS-4098. Add FileWithLink, INodeFileUnderConstructionWithLink and
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INodeFileUnderConstructionSnapshot in order to support append to snapshotted
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files. (szetszwo)
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HDFS-4395. In INodeDirectorySnapshottable's constructor, the passed-in dir
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could be an INodeDirectoryWithSnapshot. (Jing Zhao via szetszwo)
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@ -324,7 +324,7 @@ private long applyEditLogOp(FSEditLogOp op, FSDirectory fsDir,
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if (oldFile.isUnderConstruction()) {
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INodeFileUnderConstruction ucFile = (INodeFileUnderConstruction) oldFile;
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fsNamesys.leaseManager.removeLeaseWithPrefixPath(addCloseOp.path);
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INodeFile newFile = ucFile.toINodeFile(ucFile.getModificationTime());
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INodeFile newFile = ucFile.convertToInodeFile(ucFile.getModificationTime());
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fsDir.unprotectedReplaceINodeFile(addCloseOp.path, ucFile, newFile,
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iip.getLatestSnapshot());
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}
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@ -1357,11 +1357,10 @@ private LocatedBlocks getBlockLocationsUpdateTimes(String src,
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doAccessTime = false;
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}
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final INodesInPath iip = dir.getINodesInPath(src);
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long now = now();
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final INodesInPath iip = dir.getMutableINodesInPath(src);
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final INodeFile inode = INodeFile.valueOf(iip.getLastINode(), src);
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if (!iip.isSnapshot() //snapshots are readonly, so don't update atime.
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&& doAccessTime && isAccessTimeSupported()) {
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final long now = now();
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if (doAccessTime && isAccessTimeSupported()) {
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if (now <= inode.getAccessTime() + getAccessTimePrecision()) {
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// if we have to set access time but we only have the readlock, then
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// restart this entire operation with the writeLock.
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@ -1982,13 +1981,18 @@ private LocatedBlock startFileInternal(String src,
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LocatedBlock prepareFileForWrite(String src, INodeFile file,
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String leaseHolder, String clientMachine, DatanodeDescriptor clientNode,
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boolean writeToEditLog, Snapshot latestSnapshot) throws IOException {
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if (latestSnapshot != null) {
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file = (INodeFile)file.recordModification(latestSnapshot).left;
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}
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final INodeFileUnderConstruction cons
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= INodeFileUnderConstruction.toINodeFileUnderConstruction(
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file, leaseHolder, clientMachine, clientNode);
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//TODO SNAPSHOT: INodeFileUnderConstruction with link
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INodeFileUnderConstruction cons = new INodeFileUnderConstruction(
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file.getId(),
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file.getLocalNameBytes(),
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file.getFileReplication(),
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file.getModificationTime(),
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file.getPreferredBlockSize(),
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file.getBlocks(),
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file.getPermissionStatus(),
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leaseHolder,
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clientMachine,
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clientNode);
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dir.replaceINodeFile(src, file, cons, latestSnapshot);
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leaseManager.addLease(cons.getClientName(), src);
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@ -3297,7 +3301,7 @@ private void finalizeINodeFileUnderConstruction(String src,
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// The file is no longer pending.
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// Create permanent INode, update blocks
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INodeFile newFile = pendingFile.toINodeFile(now());
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INodeFile newFile = pendingFile.convertToInodeFile(now());
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dir.replaceINodeFile(src, pendingFile, newFile, latestSnapshot);
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// close file and persist block allocations for this file
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@ -509,7 +509,7 @@ public long getAccessTime() {
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/**
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* Set last access time of inode.
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*/
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public INode setAccessTime(long atime, Snapshot latest) {
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INode setAccessTime(long atime, Snapshot latest) {
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Pair<? extends INode, ? extends INode> pair = recordModification(latest);
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INode nodeToUpdate = pair != null ? pair.left : this;
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nodeToUpdate.accessTime = atime;
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@ -28,6 +28,8 @@
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import org.apache.hadoop.hdfs.server.blockmanagement.BlockCollection;
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import org.apache.hadoop.hdfs.server.blockmanagement.BlockInfo;
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import org.apache.hadoop.hdfs.server.blockmanagement.BlockInfoUnderConstruction;
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import org.apache.hadoop.hdfs.server.namenode.snapshot.INodeFileSnapshot;
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import org.apache.hadoop.hdfs.server.namenode.snapshot.INodeFileWithLink;
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import org.apache.hadoop.hdfs.server.namenode.snapshot.Snapshot;
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/** I-node for closed file. */
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@ -94,7 +96,7 @@ static long combinePreferredBlockSize(long header, long blockSize) {
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preferredBlockSize);
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}
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protected INodeFile(long id, byte[] name, PermissionStatus permissions, long mtime, long atime,
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INodeFile(long id, byte[] name, PermissionStatus permissions, long mtime, long atime,
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BlockInfo[] blklist, short replication, long preferredBlockSize) {
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super(id, name, permissions, null, mtime, atime);
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header = HeaderFormat.combineReplication(header, replication);
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@ -109,7 +111,7 @@ protected INodeFile(INodeFile that) {
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}
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@Override
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public Pair<? extends INodeFile, ? extends INodeFile> createSnapshotCopy() {
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public Pair<INodeFileWithLink, INodeFileSnapshot> createSnapshotCopy() {
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return parent.replaceINodeFile(this).createSnapshotCopy();
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}
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@ -139,7 +141,7 @@ public short getBlockReplication() {
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return getFileReplication();
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}
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public void setFileReplication(short replication, Snapshot latest) {
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protected void setFileReplication(short replication, Snapshot latest) {
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if (latest != null) {
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final Pair<? extends INode, ? extends INode> p = recordModification(latest);
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if (p != null) {
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@ -29,10 +29,6 @@
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import org.apache.hadoop.hdfs.server.blockmanagement.DatanodeDescriptor;
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import org.apache.hadoop.hdfs.server.blockmanagement.MutableBlockCollection;
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import org.apache.hadoop.hdfs.server.common.HdfsServerConstants.BlockUCState;
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import org.apache.hadoop.hdfs.server.namenode.snapshot.INodeFileUnderConstructionWithLink;
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import org.apache.hadoop.hdfs.server.namenode.snapshot.INodeFileWithLink;
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import com.google.common.base.Preconditions;
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/**
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* I-node for file being written.
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@ -49,29 +45,6 @@ public static INodeFileUnderConstruction valueOf(INode inode, String path
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return (INodeFileUnderConstruction)file;
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}
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/** Convert the given file to an {@link INodeFileUnderConstruction}. */
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public static INodeFileUnderConstruction toINodeFileUnderConstruction(
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INodeFile file,
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String clientName,
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String clientMachine,
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DatanodeDescriptor clientNode) {
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Preconditions.checkArgument(!(file instanceof INodeFileUnderConstruction),
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"file is already an INodeFileUnderConstruction");
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final INodeFileUnderConstruction uc = new INodeFileUnderConstruction(
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file.getId(),
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file.getLocalNameBytes(),
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file.getFileReplication(),
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file.getModificationTime(),
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file.getPreferredBlockSize(),
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file.getBlocks(),
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file.getPermissionStatus(),
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clientName,
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clientMachine,
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clientNode);
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return file instanceof INodeFileWithLink?
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new INodeFileUnderConstructionWithLink(uc): uc;
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}
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private String clientName; // lease holder
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private final String clientMachine;
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private final DatanodeDescriptor clientNode; // if client is a cluster node too.
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@ -104,13 +77,6 @@ public static INodeFileUnderConstruction toINodeFileUnderConstruction(
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this.clientMachine = clientMachine;
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this.clientNode = clientNode;
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}
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protected INodeFileUnderConstruction(INodeFileUnderConstruction that) {
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super(that);
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this.clientName = that.clientName;
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this.clientMachine = that.clientMachine;
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this.clientNode = that.clientNode;
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}
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String getClientName() {
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return clientName;
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@ -136,26 +102,30 @@ public boolean isUnderConstruction() {
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return true;
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}
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/**
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* Converts an INodeFileUnderConstruction to an INodeFile.
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* The original modification time is used as the access time.
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* The new modification is the specified mtime.
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*/
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protected INodeFile toINodeFile(long mtime) {
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assertAllBlocksComplete();
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//
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// converts a INodeFileUnderConstruction into a INodeFile
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// use the modification time as the access time
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//
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INodeFile convertToInodeFile(long mtime) {
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assert allBlocksComplete() : "Can't finalize inode " + this
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+ " since it contains non-complete blocks! Blocks are "
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+ Arrays.asList(getBlocks());
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//TODO SNAPSHOT: may convert to INodeFileWithLink
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return new INodeFile(getId(), getLocalNameBytes(), getPermissionStatus(),
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mtime, getModificationTime(),
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getBlocks(), getFileReplication(), getPreferredBlockSize());
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}
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/** Assert all blocks are complete. */
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protected void assertAllBlocksComplete() {
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final BlockInfo[] blocks = getBlocks();
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for (int i = 0; i < blocks.length; i++) {
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Preconditions.checkState(blocks[i].isComplete(), "Failed to finalize"
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+ " %s %s since blocks[%s] is non-complete, where blocks=%s.",
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getClass().getSimpleName(), this, i, Arrays.asList(getBlocks()));
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/**
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* @return true if all of the blocks in this file are marked as completed.
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*/
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private boolean allBlocksComplete() {
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for (BlockInfo b : getBlocks()) {
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if (!b.isComplete()) {
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return false;
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}
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}
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return true;
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}
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/**
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@ -1,154 +0,0 @@
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/**
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* Licensed to the Apache Software Foundation (ASF) under one
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* or more contributor license agreements. See the NOTICE file
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* distributed with this work for additional information
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* regarding copyright ownership. The ASF licenses this file
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* to you under the Apache License, Version 2.0 (the
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* "License"); you may not use this file except in compliance
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* with the License. You may obtain a copy of the License at
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*
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* http://www.apache.org/licenses/LICENSE-2.0
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*
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* Unless required by applicable law or agreed to in writing, software
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* distributed under the License is distributed on an "AS IS" BASIS,
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* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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* See the License for the specific language governing permissions and
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* limitations under the License.
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*/
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package org.apache.hadoop.hdfs.server.namenode.snapshot;
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import org.apache.hadoop.classification.InterfaceAudience;
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import org.apache.hadoop.hdfs.server.blockmanagement.BlockInfo;
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import org.apache.hadoop.hdfs.server.namenode.INodeFile;
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import org.apache.hadoop.hdfs.server.namenode.INode.BlocksMapINodeUpdateEntry;
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import org.apache.hadoop.hdfs.server.namenode.INode.BlocksMapUpdateInfo;
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import com.google.common.base.Preconditions;
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/**
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* {@link INodeFile} with a link to the next element.
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* The link of all the snapshot files and the original file form a circular
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* linked list so that all elements are accessible by any of the elements.
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*/
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@InterfaceAudience.Private
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public interface FileWithLink {
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/** @return the next element. */
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public <N extends INodeFile & FileWithLink> N getNext();
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/** Set the next element. */
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public <N extends INodeFile & FileWithLink> void setNext(N next);
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/** Insert inode to the circular linked list. */
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public <N extends INodeFile & FileWithLink> void insert(N inode);
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/** Utility methods for the classes which implement the interface. */
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static class Util {
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/**
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* @return the max file replication of the elements
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* in the circular linked list.
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*/
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static <F extends INodeFile & FileWithLink,
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N extends INodeFile & FileWithLink> short getBlockReplication(
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final F file) {
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short max = file.getFileReplication();
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// i may be null since next will be set to null when the INode is deleted
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for(N i = file.getNext(); i != file && i != null; i = i.getNext()) {
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final short replication = i.getFileReplication();
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if (replication > max) {
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max = replication;
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}
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}
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return max;
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}
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/**
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* Remove the current inode from the circular linked list.
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* If some blocks at the end of the block list no longer belongs to
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* any other inode, collect them and update the block list.
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*/
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static <F extends INodeFile & FileWithLink,
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N extends INodeFile & FileWithLink>
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int collectSubtreeBlocksAndClear(F file, BlocksMapUpdateInfo info) {
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final N next = file.getNext();
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Preconditions.checkState(next != file, "this is the only remaining inode.");
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// There are other inode(s) using the blocks.
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// Compute max file size excluding this and find the last inode.
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long max = next.computeFileSize(true);
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short maxReplication = next.getFileReplication();
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FileWithLink last = next;
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for(N i = next.getNext(); i != file; i = i.getNext()) {
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final long size = i.computeFileSize(true);
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if (size > max) {
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max = size;
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}
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final short rep = i.getFileReplication();
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if (rep > maxReplication) {
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maxReplication = rep;
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}
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last = i;
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}
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collectBlocksBeyondMaxAndClear(file, max, info);
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// remove this from the circular linked list.
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last.setNext(next);
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// Set the replication of the current INode to the max of all the other
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// linked INodes, so that in case the current INode is retrieved from the
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// blocksMap before it is removed or updated, the correct replication
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// number can be retrieved.
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file.setFileReplication(maxReplication, null);
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file.setNext(null);
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// clear parent
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file.setParent(null);
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return 1;
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}
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static <F extends INodeFile & FileWithLink,
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N extends INodeFile & FileWithLink>
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void collectBlocksBeyondMaxAndClear(final F file,
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final long max, final BlocksMapUpdateInfo info) {
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final BlockInfo[] oldBlocks = file.getBlocks();
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if (oldBlocks != null) {
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//find the minimum n such that the size of the first n blocks > max
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int n = 0;
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for(long size = 0; n < oldBlocks.length && max > size; n++) {
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size += oldBlocks[n].getNumBytes();
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}
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// Replace the INode for all the remaining blocks in blocksMap
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final N next = file.getNext();
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final BlocksMapINodeUpdateEntry entry = new BlocksMapINodeUpdateEntry(
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file, next);
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if (info != null) {
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for (int i = 0; i < n; i++) {
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info.addUpdateBlock(oldBlocks[i], entry);
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}
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}
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// starting from block n, the data is beyond max.
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if (n < oldBlocks.length) {
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// resize the array.
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final BlockInfo[] newBlocks;
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if (n == 0) {
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newBlocks = null;
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} else {
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newBlocks = new BlockInfo[n];
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System.arraycopy(oldBlocks, 0, newBlocks, 0, n);
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}
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for(N i = next; i != file; i = i.getNext()) {
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i.setBlocks(newBlocks);
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}
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// collect the blocks beyond max.
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if (info != null) {
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for(; n < oldBlocks.length; n++) {
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info.addDeleteBlock(oldBlocks[n]);
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}
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}
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}
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file.setBlocks(null);
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}
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}
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}
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}
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@ -1,44 +0,0 @@
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/**
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* Licensed to the Apache Software Foundation (ASF) under one
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* or more contributor license agreements. See the NOTICE file
|
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* distributed with this work for additional information
|
||||
* regarding copyright ownership. The ASF licenses this file
|
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* 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
|
||||
*
|
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* http://www.apache.org/licenses/LICENSE-2.0
|
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*
|
||||
* 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.
|
||||
*/
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package org.apache.hadoop.hdfs.server.namenode.snapshot;
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import org.apache.hadoop.classification.InterfaceAudience;
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import org.apache.hadoop.hdfs.server.namenode.INodeFileUnderConstruction;
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/**
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* INode representing a snapshot of an {@link INodeFileUnderConstruction}.
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*/
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@InterfaceAudience.Private
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public class INodeFileUnderConstructionSnapshot
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extends INodeFileUnderConstructionWithLink {
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/** The file size at snapshot creation time. */
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final long size;
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INodeFileUnderConstructionSnapshot(INodeFileUnderConstructionWithLink f) {
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super(f);
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this.size = f.computeFileSize(true);
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f.insert(this);
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}
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@Override
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public long computeFileSize(boolean includesBlockInfoUnderConstruction) {
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//ignore includesBlockInfoUnderConstruction
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//since files in a snapshot are considered as closed.
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return size;
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}
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}
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@ -1,88 +0,0 @@
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/**
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* 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.
|
||||
*/
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package org.apache.hadoop.hdfs.server.namenode.snapshot;
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import org.apache.hadoop.classification.InterfaceAudience;
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import org.apache.hadoop.hdfs.server.namenode.INodeFile;
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import org.apache.hadoop.hdfs.server.namenode.INodeFileUnderConstruction;
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/**
|
||||
* Represent an {@link INodeFileUnderConstruction} that is snapshotted.
|
||||
* Note that snapshot files are represented by
|
||||
* {@link INodeFileUnderConstructionSnapshot}.
|
||||
*/
|
||||
@InterfaceAudience.Private
|
||||
public class INodeFileUnderConstructionWithLink
|
||||
extends INodeFileUnderConstruction implements FileWithLink {
|
||||
private FileWithLink next;
|
||||
|
||||
public INodeFileUnderConstructionWithLink(INodeFileUnderConstruction f) {
|
||||
super(f);
|
||||
setNext(this);
|
||||
}
|
||||
|
||||
@Override
|
||||
protected INodeFileWithLink toINodeFile(final long mtime) {
|
||||
assertAllBlocksComplete();
|
||||
final long atime = getModificationTime();
|
||||
final INodeFileWithLink f = new INodeFileWithLink(this);
|
||||
f.setModificationTime(mtime, null);
|
||||
f.setAccessTime(atime, null);
|
||||
return f;
|
||||
}
|
||||
|
||||
@Override
|
||||
public Pair<? extends INodeFileUnderConstruction,
|
||||
INodeFileUnderConstructionSnapshot> createSnapshotCopy() {
|
||||
return new Pair<INodeFileUnderConstructionWithLink,
|
||||
INodeFileUnderConstructionSnapshot>(
|
||||
this, new INodeFileUnderConstructionSnapshot(this));
|
||||
}
|
||||
|
||||
@SuppressWarnings("unchecked")
|
||||
@Override
|
||||
public <N extends INodeFile & FileWithLink> N getNext() {
|
||||
return (N)next;
|
||||
}
|
||||
|
||||
@Override
|
||||
public <N extends INodeFile & FileWithLink> void setNext(N next) {
|
||||
this.next = next;
|
||||
}
|
||||
|
||||
@Override
|
||||
public <N extends INodeFile & FileWithLink> void insert(N inode) {
|
||||
inode.setNext(this.getNext());
|
||||
this.setNext(inode);
|
||||
}
|
||||
|
||||
@Override
|
||||
public short getBlockReplication() {
|
||||
return Util.getBlockReplication(this);
|
||||
}
|
||||
|
||||
@Override
|
||||
protected int collectSubtreeBlocksAndClear(BlocksMapUpdateInfo info) {
|
||||
if (next == null || next == this) {
|
||||
// this is the only remaining inode.
|
||||
return super.collectSubtreeBlocksAndClear(info);
|
||||
} else {
|
||||
return Util.collectSubtreeBlocksAndClear(this, info);
|
||||
}
|
||||
}
|
||||
}
|
||||
@ -18,19 +18,23 @@
|
||||
package org.apache.hadoop.hdfs.server.namenode.snapshot;
|
||||
|
||||
import org.apache.hadoop.classification.InterfaceAudience;
|
||||
import org.apache.hadoop.hdfs.server.blockmanagement.BlockInfo;
|
||||
import org.apache.hadoop.hdfs.server.namenode.INodeFile;
|
||||
|
||||
/**
|
||||
* Represent an {@link INodeFile} that is snapshotted.
|
||||
* Note that snapshot files are represented by {@link INodeFileSnapshot}.
|
||||
* INodeFile with a link to the next element.
|
||||
* This class is used to represent the original file that is snapshotted.
|
||||
* The snapshot files are represented by {@link INodeFileSnapshot}.
|
||||
* The link of all the snapshot files and the original file form a circular
|
||||
* linked list so that all elements are accessible by any of the elements.
|
||||
*/
|
||||
@InterfaceAudience.Private
|
||||
public class INodeFileWithLink extends INodeFile implements FileWithLink {
|
||||
private FileWithLink next;
|
||||
public class INodeFileWithLink extends INodeFile {
|
||||
private INodeFileWithLink next;
|
||||
|
||||
public INodeFileWithLink(INodeFile f) {
|
||||
super(f);
|
||||
setNext(this);
|
||||
next = this;
|
||||
}
|
||||
|
||||
@Override
|
||||
@ -39,35 +43,124 @@ public Pair<INodeFileWithLink, INodeFileSnapshot> createSnapshotCopy() {
|
||||
new INodeFileSnapshot(this));
|
||||
}
|
||||
|
||||
@SuppressWarnings("unchecked")
|
||||
@Override
|
||||
public <N extends INodeFile & FileWithLink> N getNext() {
|
||||
return (N)next;
|
||||
}
|
||||
|
||||
@Override
|
||||
public <N extends INodeFile & FileWithLink> void setNext(N next) {
|
||||
void setNext(INodeFileWithLink next) {
|
||||
this.next = next;
|
||||
}
|
||||
|
||||
@Override
|
||||
public <N extends INodeFile & FileWithLink> void insert(N inode) {
|
||||
INodeFileWithLink getNext() {
|
||||
return next;
|
||||
}
|
||||
|
||||
/** Insert inode to the circular linked list. */
|
||||
void insert(INodeFileWithLink inode) {
|
||||
inode.setNext(this.getNext());
|
||||
this.setNext(inode);
|
||||
}
|
||||
|
||||
/**
|
||||
* @return the max file replication of the elements
|
||||
* in the circular linked list.
|
||||
*/
|
||||
@Override
|
||||
public short getBlockReplication() {
|
||||
return Util.getBlockReplication(this);
|
||||
short max = getFileReplication();
|
||||
// i may be null since next will be set to null when the INode is deleted
|
||||
for(INodeFileWithLink i = next; i != this && i != null; i = i.getNext()) {
|
||||
final short replication = i.getFileReplication();
|
||||
if (replication > max) {
|
||||
max = replication;
|
||||
}
|
||||
}
|
||||
return max;
|
||||
}
|
||||
|
||||
/**
|
||||
* {@inheritDoc}
|
||||
*
|
||||
* Remove the current inode from the circular linked list.
|
||||
* If some blocks at the end of the block list no longer belongs to
|
||||
* any other inode, collect them and update the block list.
|
||||
*/
|
||||
@Override
|
||||
public int collectSubtreeBlocksAndClear(BlocksMapUpdateInfo info) {
|
||||
if (next == null || next == this) {
|
||||
if (next == this) {
|
||||
// this is the only remaining inode.
|
||||
return super.collectSubtreeBlocksAndClear(info);
|
||||
super.collectSubtreeBlocksAndClear(info);
|
||||
} else {
|
||||
return Util.collectSubtreeBlocksAndClear(this, info);
|
||||
// There are other inode(s) using the blocks.
|
||||
// Compute max file size excluding this and find the last inode.
|
||||
long max = next.computeFileSize(true);
|
||||
short maxReplication = next.getFileReplication();
|
||||
INodeFileWithLink last = next;
|
||||
for(INodeFileWithLink i = next.getNext(); i != this; i = i.getNext()) {
|
||||
final long size = i.computeFileSize(true);
|
||||
if (size > max) {
|
||||
max = size;
|
||||
}
|
||||
final short rep = i.getFileReplication();
|
||||
if (rep > maxReplication) {
|
||||
maxReplication = rep;
|
||||
}
|
||||
last = i;
|
||||
}
|
||||
|
||||
collectBlocksBeyondMaxAndClear(max, info);
|
||||
|
||||
// remove this from the circular linked list.
|
||||
last.next = this.next;
|
||||
// Set the replication of the current INode to the max of all the other
|
||||
// linked INodes, so that in case the current INode is retrieved from the
|
||||
// blocksMap before it is removed or updated, the correct replication
|
||||
// number can be retrieved.
|
||||
this.setFileReplication(maxReplication, null);
|
||||
this.next = null;
|
||||
// clear parent
|
||||
setParent(null);
|
||||
}
|
||||
return 1;
|
||||
}
|
||||
|
||||
private void collectBlocksBeyondMaxAndClear(final long max,
|
||||
final BlocksMapUpdateInfo info) {
|
||||
final BlockInfo[] oldBlocks = getBlocks();
|
||||
if (oldBlocks != null) {
|
||||
//find the minimum n such that the size of the first n blocks > max
|
||||
int n = 0;
|
||||
for(long size = 0; n < oldBlocks.length && max > size; n++) {
|
||||
size += oldBlocks[n].getNumBytes();
|
||||
}
|
||||
|
||||
// Replace the INode for all the remaining blocks in blocksMap
|
||||
BlocksMapINodeUpdateEntry entry = new BlocksMapINodeUpdateEntry(this,
|
||||
next);
|
||||
if (info != null) {
|
||||
for (int i = 0; i < n; i++) {
|
||||
info.addUpdateBlock(oldBlocks[i], entry);
|
||||
}
|
||||
}
|
||||
|
||||
// starting from block n, the data is beyond max.
|
||||
if (n < oldBlocks.length) {
|
||||
// resize the array.
|
||||
final BlockInfo[] newBlocks;
|
||||
if (n == 0) {
|
||||
newBlocks = null;
|
||||
} else {
|
||||
newBlocks = new BlockInfo[n];
|
||||
System.arraycopy(oldBlocks, 0, newBlocks, 0, n);
|
||||
}
|
||||
for(INodeFileWithLink i = next; i != this; i = i.getNext()) {
|
||||
i.setBlocks(newBlocks);
|
||||
}
|
||||
|
||||
// collect the blocks beyond max.
|
||||
if (info != null) {
|
||||
for(; n < oldBlocks.length; n++) {
|
||||
info.addDeleteBlock(oldBlocks[n]);
|
||||
}
|
||||
}
|
||||
}
|
||||
setBlocks(null);
|
||||
}
|
||||
}
|
||||
}
|
||||
|
||||
@ -364,7 +364,8 @@ public void testSnapshotPathINodesWithAddedFile() throws Exception {
|
||||
* Test {@link INodeDirectory#getExistingPathINodes(byte[][], int, boolean)}
|
||||
* for snapshot file while modifying file after snapshot.
|
||||
*/
|
||||
@Test
|
||||
// TODO: disable it temporarily since it uses append.
|
||||
// @Test
|
||||
public void testSnapshotPathINodesAfterModification() throws Exception {
|
||||
//file1 was deleted, create it again.
|
||||
DFSTestUtil.createFile(hdfs, file1, 1024, REPLICATION, seed);
|
||||
|
||||
@ -270,9 +270,10 @@ private Modification[] prepareModifications(TestDirectoryTree.Node[] nodes)
|
||||
Modification delete = new FileDeletion(
|
||||
node.fileList.get((node.nullFileIndex + 1) % node.fileList.size()),
|
||||
hdfs);
|
||||
Modification append = new FileAppend(
|
||||
node.fileList.get((node.nullFileIndex + 2) % node.fileList.size()),
|
||||
hdfs, (int) BLOCKSIZE);
|
||||
// TODO: fix append for snapshots
|
||||
// Modification append = new FileAppend(
|
||||
// node.fileList.get((node.nullFileIndex + 2) % node.fileList.size()),
|
||||
// hdfs, (int) BLOCKSIZE);
|
||||
Modification chmod = new FileChangePermission(
|
||||
node.fileList.get((node.nullFileIndex + 3) % node.fileList.size()),
|
||||
hdfs, genRandomPermission());
|
||||
@ -289,7 +290,8 @@ private Modification[] prepareModifications(TestDirectoryTree.Node[] nodes)
|
||||
|
||||
mList.add(create);
|
||||
mList.add(delete);
|
||||
mList.add(append);
|
||||
// TODO: fix append for snapshots
|
||||
// mList.add(append);
|
||||
mList.add(chmod);
|
||||
mList.add(chown);
|
||||
mList.add(replication);
|
||||
|
||||
Loading…
Reference in New Issue
Block a user