From 042699401ebe5186fa5556a79f8f9a206e5ebcd7 Mon Sep 17 00:00:00 2001 From: Haohui Mai Date: Mon, 1 Dec 2014 21:48:28 -0800 Subject: [PATCH] HDFS-7438. Consolidate the implementation of rename() into a single class. Contributed by Haohui Mai. --- hadoop-hdfs-project/hadoop-hdfs/CHANGES.txt | 3 + .../hdfs/server/namenode/FSDirRenameOp.java | 691 ++++++++++++++++++ .../hdfs/server/namenode/FSDirectory.java | 525 +------------ .../hdfs/server/namenode/FSEditLogLoader.java | 5 +- .../hadoop/hdfs/server/namenode/FSImage.java | 5 - .../hdfs/server/namenode/FSNamesystem.java | 162 +--- .../org/apache/hadoop/hdfs/DFSTestUtil.java | 8 + .../hadoop/hdfs/TestRenameWhileOpen.java | 2 +- .../hdfs/server/namenode/NameNodeAdapter.java | 3 +- .../server/namenode/TestNameNodeRecovery.java | 3 +- 10 files changed, 747 insertions(+), 660 deletions(-) create mode 100644 hadoop-hdfs-project/hadoop-hdfs/src/main/java/org/apache/hadoop/hdfs/server/namenode/FSDirRenameOp.java diff --git a/hadoop-hdfs-project/hadoop-hdfs/CHANGES.txt b/hadoop-hdfs-project/hadoop-hdfs/CHANGES.txt index d5c1fe504f4..52a439fe286 100644 --- a/hadoop-hdfs-project/hadoop-hdfs/CHANGES.txt +++ b/hadoop-hdfs-project/hadoop-hdfs/CHANGES.txt @@ -410,6 +410,9 @@ Release 2.7.0 - UNRELEASED HDFS-7450. Consolidate the implementation of GetFileInfo(), GetListings() and GetContentSummary() into a single class. (wheat9) + HDFS-7438. Consolidate the implementation of rename() into a single class. + (wheat9) + OPTIMIZATIONS BUG FIXES diff --git a/hadoop-hdfs-project/hadoop-hdfs/src/main/java/org/apache/hadoop/hdfs/server/namenode/FSDirRenameOp.java b/hadoop-hdfs-project/hadoop-hdfs/src/main/java/org/apache/hadoop/hdfs/server/namenode/FSDirRenameOp.java new file mode 100644 index 00000000000..f371f056889 --- /dev/null +++ b/hadoop-hdfs-project/hadoop-hdfs/src/main/java/org/apache/hadoop/hdfs/server/namenode/FSDirRenameOp.java @@ -0,0 +1,691 @@ +/** + * 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 org.apache.hadoop.fs.FileAlreadyExistsException; +import org.apache.hadoop.fs.InvalidPathException; +import org.apache.hadoop.fs.Options; +import org.apache.hadoop.fs.ParentNotDirectoryException; +import org.apache.hadoop.fs.Path; +import org.apache.hadoop.fs.permission.FsAction; +import org.apache.hadoop.hdfs.DFSUtil; +import org.apache.hadoop.hdfs.DistributedFileSystem; +import org.apache.hadoop.hdfs.protocol.HdfsFileStatus; +import org.apache.hadoop.hdfs.protocol.QuotaExceededException; +import org.apache.hadoop.hdfs.protocol.SnapshotException; +import org.apache.hadoop.hdfs.server.namenode.INode.BlocksMapUpdateInfo; +import org.apache.hadoop.hdfs.server.namenode.snapshot.Snapshot; +import org.apache.hadoop.hdfs.util.ChunkedArrayList; +import org.apache.hadoop.hdfs.util.ReadOnlyList; + +import java.io.FileNotFoundException; +import java.io.IOException; +import java.util.AbstractMap; +import java.util.ArrayList; +import java.util.Arrays; +import java.util.List; +import java.util.Map; + +import static org.apache.hadoop.util.Time.now; + +class FSDirRenameOp { + static RenameOldResult renameToInt( + FSDirectory fsd, final String srcArg, final String dstArg, + boolean logRetryCache) + throws IOException { + String src = srcArg; + String dst = dstArg; + if (NameNode.stateChangeLog.isDebugEnabled()) { + NameNode.stateChangeLog.debug("DIR* NameSystem.renameTo: " + src + + " to " + dst); + } + if (!DFSUtil.isValidName(dst)) { + throw new IOException("Invalid name: " + dst); + } + FSPermissionChecker pc = fsd.getPermissionChecker(); + + byte[][] srcComponents = FSDirectory.getPathComponentsForReservedPath(src); + byte[][] dstComponents = FSDirectory.getPathComponentsForReservedPath(dst); + HdfsFileStatus resultingStat = null; + src = fsd.resolvePath(pc, src, srcComponents); + dst = fsd.resolvePath(pc, dst, dstComponents); + @SuppressWarnings("deprecation") + final boolean status = renameToInternal(fsd, pc, src, dst, logRetryCache); + if (status) { + resultingStat = fsd.getAuditFileInfo(dst, false); + } + return new RenameOldResult(status, resultingStat); + } + + /** + * Change a path name + * + * @param fsd FSDirectory + * @param src source path + * @param dst destination path + * @return true if rename succeeds; false otherwise + * @deprecated See {@link #renameToInt(FSDirectory, String, String, + * boolean, Options.Rename...)} + */ + @Deprecated + static boolean unprotectedRenameTo( + FSDirectory fsd, String src, String dst, long timestamp) + throws IOException { + assert fsd.hasWriteLock(); + INodesInPath srcIIP = fsd.getINodesInPath4Write(src, false); + final INode srcInode = srcIIP.getLastINode(); + try { + validateRenameSource(src, srcIIP); + } catch (SnapshotException e) { + throw e; + } catch (IOException ignored) { + return false; + } + + if (fsd.isDir(dst)) { + dst += Path.SEPARATOR + new Path(src).getName(); + } + + // validate the destination + if (dst.equals(src)) { + return true; + } + + try { + validateDestination(src, dst, srcInode); + } catch (IOException ignored) { + return false; + } + + INodesInPath dstIIP = fsd.getINodesInPath4Write(dst, false); + if (dstIIP.getLastINode() != null) { + NameNode.stateChangeLog.warn("DIR* FSDirectory.unprotectedRenameTo: " + + "failed to rename " + src + " to " + dst + " because destination " + + "exists"); + return false; + } + INode dstParent = dstIIP.getINode(-2); + if (dstParent == null) { + NameNode.stateChangeLog.warn("DIR* FSDirectory.unprotectedRenameTo: " + + "failed to rename " + src + " to " + dst + " because destination's " + + "parent does not exist"); + return false; + } + + fsd.ezManager.checkMoveValidity(srcIIP, dstIIP, src); + // Ensure dst has quota to accommodate rename + fsd.verifyFsLimitsForRename(srcIIP, dstIIP); + fsd.verifyQuotaForRename(srcIIP.getINodes(), dstIIP.getINodes()); + + RenameOperation tx = new RenameOperation(fsd, src, dst, srcIIP, dstIIP); + + boolean added = false; + + try { + // remove src + final long removedSrc = fsd.removeLastINode(srcIIP); + if (removedSrc == -1) { + NameNode.stateChangeLog.warn("DIR* FSDirectory.unprotectedRenameTo: " + + "failed to rename " + src + " to " + dst + " because the source" + + " can not be removed"); + return false; + } + + added = tx.addSourceToDestination(); + if (added) { + if (NameNode.stateChangeLog.isDebugEnabled()) { + NameNode.stateChangeLog.debug("DIR* FSDirectory" + + ".unprotectedRenameTo: " + src + " is renamed to " + dst); + } + + tx.updateMtimeAndLease(timestamp); + tx.updateQuotasInSourceTree(); + + return true; + } + } finally { + if (!added) { + tx.restoreSource(); + } + } + NameNode.stateChangeLog.warn("DIR* FSDirectory.unprotectedRenameTo: " + + "failed to rename " + src + " to " + dst); + return false; + } + + /** + * The new rename which has the POSIX semantic. + */ + static Map.Entry renameToInt( + FSDirectory fsd, final String srcArg, final String dstArg, + boolean logRetryCache, Options.Rename... options) + throws IOException { + String src = srcArg; + String dst = dstArg; + if (NameNode.stateChangeLog.isDebugEnabled()) { + NameNode.stateChangeLog.debug("DIR* NameSystem.renameTo: with options -" + + " " + src + " to " + dst); + } + if (!DFSUtil.isValidName(dst)) { + throw new InvalidPathException("Invalid name: " + dst); + } + final FSPermissionChecker pc = fsd.getPermissionChecker(); + + byte[][] srcComponents = FSDirectory.getPathComponentsForReservedPath(src); + byte[][] dstComponents = FSDirectory.getPathComponentsForReservedPath(dst); + BlocksMapUpdateInfo collectedBlocks = new BlocksMapUpdateInfo(); + src = fsd.resolvePath(pc, src, srcComponents); + dst = fsd.resolvePath(pc, dst, dstComponents); + renameToInternal(fsd, pc, src, dst, logRetryCache, collectedBlocks, + options); + HdfsFileStatus resultingStat = fsd.getAuditFileInfo(dst, false); + + return new AbstractMap.SimpleImmutableEntry(collectedBlocks, resultingStat); + } + + /** + * @see #unprotectedRenameTo(FSDirectory, String, String, long, + * org.apache.hadoop.fs.Options.Rename...) + */ + static void renameTo( + FSDirectory fsd, String src, String dst, long mtime, + BlocksMapUpdateInfo collectedBlocks, Options.Rename... options) + throws IOException { + if (NameNode.stateChangeLog.isDebugEnabled()) { + NameNode.stateChangeLog.debug("DIR* FSDirectory.renameTo: " + src + " to " + + dst); + } + fsd.writeLock(); + try { + if (unprotectedRenameTo(fsd, src, dst, mtime, collectedBlocks, options)) { + fsd.getFSNamesystem().incrDeletedFileCount(1); + } + } finally { + fsd.writeUnlock(); + } + } + + /** + * Rename src to dst. + *
+ * Note: This is to be used by {@link org.apache.hadoop.hdfs.server + * .namenode.FSEditLog} only. + *
+ * + * @param fsd FSDirectory + * @param src source path + * @param dst destination path + * @param timestamp modification time + * @param options Rename options + */ + static boolean unprotectedRenameTo( + FSDirectory fsd, String src, String dst, long timestamp, + Options.Rename... options) + throws IOException { + BlocksMapUpdateInfo collectedBlocks = new BlocksMapUpdateInfo(); + boolean ret = unprotectedRenameTo(fsd, src, dst, timestamp, + collectedBlocks, options); + if (!collectedBlocks.getToDeleteList().isEmpty()) { + fsd.getFSNamesystem().removeBlocksAndUpdateSafemodeTotal(collectedBlocks); + } + return ret; + } + + /** + * Rename src to dst. + * See {@link DistributedFileSystem#rename(Path, Path, Options.Rename...)} + * for details related to rename semantics and exceptions. + * + * @param fsd FSDirectory + * @param src source path + * @param dst destination path + * @param timestamp modification time + * @param collectedBlocks blocks to be removed + * @param options Rename options + */ + static boolean unprotectedRenameTo( + FSDirectory fsd, String src, String dst, long timestamp, + BlocksMapUpdateInfo collectedBlocks, Options.Rename... options) + throws IOException { + assert fsd.hasWriteLock(); + boolean overwrite = options != null + && Arrays.asList(options).contains(Options.Rename.OVERWRITE); + + final String error; + final INodesInPath srcIIP = fsd.getINodesInPath4Write(src, false); + final INode srcInode = srcIIP.getLastINode(); + validateRenameSource(src, srcIIP); + + // validate the destination + if (dst.equals(src)) { + throw new FileAlreadyExistsException("The source " + src + + " and destination " + dst + " are the same"); + } + validateDestination(src, dst, srcInode); + + INodesInPath dstIIP = fsd.getINodesInPath4Write(dst, false); + if (dstIIP.getINodes().length == 1) { + error = "rename destination cannot be the root"; + NameNode.stateChangeLog.warn("DIR* FSDirectory.unprotectedRenameTo: " + + error); + throw new IOException(error); + } + + fsd.ezManager.checkMoveValidity(srcIIP, dstIIP, src); + final INode dstInode = dstIIP.getLastINode(); + List snapshottableDirs = new ArrayList(); + if (dstInode != null) { // Destination exists + validateOverwrite(src, dst, overwrite, srcInode, dstInode); + FSDirSnapshotOp.checkSnapshot(dstInode, snapshottableDirs); + } + + INode dstParent = dstIIP.getINode(-2); + if (dstParent == null) { + error = "rename destination parent " + dst + " not found."; + NameNode.stateChangeLog.warn("DIR* FSDirectory.unprotectedRenameTo: " + + error); + throw new FileNotFoundException(error); + } + if (!dstParent.isDirectory()) { + error = "rename destination parent " + dst + " is a file."; + NameNode.stateChangeLog.warn("DIR* FSDirectory.unprotectedRenameTo: " + + error); + throw new ParentNotDirectoryException(error); + } + + // Ensure dst has quota to accommodate rename + fsd.verifyFsLimitsForRename(srcIIP, dstIIP); + fsd.verifyQuotaForRename(srcIIP.getINodes(), dstIIP.getINodes()); + + RenameOperation tx = new RenameOperation(fsd, src, dst, srcIIP, dstIIP); + + boolean undoRemoveSrc = true; + final long removedSrc = fsd.removeLastINode(srcIIP); + if (removedSrc == -1) { + error = "Failed to rename " + src + " to " + dst + + " because the source can not be removed"; + NameNode.stateChangeLog.warn("DIR* FSDirectory.unprotectedRenameTo: " + + error); + throw new IOException(error); + } + + boolean undoRemoveDst = false; + INode removedDst = null; + long removedNum = 0; + try { + if (dstInode != null) { // dst exists remove it + if ((removedNum = fsd.removeLastINode(dstIIP)) != -1) { + removedDst = dstIIP.getLastINode(); + undoRemoveDst = true; + } + } + + // add src as dst to complete rename + if (tx.addSourceToDestination()) { + undoRemoveSrc = false; + if (NameNode.stateChangeLog.isDebugEnabled()) { + NameNode.stateChangeLog.debug("DIR* FSDirectory.unprotectedRenameTo: " + + src + " is renamed to " + dst); + } + + tx.updateMtimeAndLease(timestamp); + + // Collect the blocks and remove the lease for previous dst + boolean filesDeleted = false; + if (removedDst != null) { + undoRemoveDst = false; + if (removedNum > 0) { + List removedINodes = new ChunkedArrayList(); + if (!removedDst.isInLatestSnapshot(dstIIP.getLatestSnapshotId())) { + removedDst.destroyAndCollectBlocks(collectedBlocks, + removedINodes); + filesDeleted = true; + } else { + filesDeleted = removedDst.cleanSubtree( + Snapshot.CURRENT_STATE_ID, dstIIP.getLatestSnapshotId(), + collectedBlocks, removedINodes, true) + .get(Quota.NAMESPACE) >= 0; + } + fsd.getFSNamesystem().removePathAndBlocks(src, null, + removedINodes, false); + } + } + + if (snapshottableDirs.size() > 0) { + // There are snapshottable directories (without snapshots) to be + // deleted. Need to update the SnapshotManager. + fsd.getFSNamesystem().removeSnapshottableDirs(snapshottableDirs); + } + + tx.updateQuotasInSourceTree(); + return filesDeleted; + } + } finally { + if (undoRemoveSrc) { + tx.restoreSource(); + } + + if (undoRemoveDst) { + // Rename failed - restore dst + if (dstParent.isDirectory() && + dstParent.asDirectory().isWithSnapshot()) { + dstParent.asDirectory().undoRename4DstParent(removedDst, + dstIIP.getLatestSnapshotId()); + } else { + fsd.addLastINodeNoQuotaCheck(dstIIP, removedDst); + } + assert removedDst != null; + if (removedDst.isReference()) { + final INodeReference removedDstRef = removedDst.asReference(); + final INodeReference.WithCount wc = (INodeReference.WithCount) + removedDstRef.getReferredINode().asReference(); + wc.addReference(removedDstRef); + } + } + } + NameNode.stateChangeLog.warn("DIR* FSDirectory.unprotectedRenameTo: " + + "failed to rename " + src + " to " + dst); + throw new IOException("rename from " + src + " to " + dst + " failed."); + } + + /** + * @see #unprotectedRenameTo(FSDirectory, String, String, long) + * @deprecated Use {@link #renameToInt(FSDirectory, String, String, + * boolean, Options.Rename...)} + */ + @Deprecated + @SuppressWarnings("deprecation") + private static boolean renameTo( + FSDirectory fsd, String src, String dst, long mtime) + throws IOException { + if (NameNode.stateChangeLog.isDebugEnabled()) { + NameNode.stateChangeLog.debug("DIR* FSDirectory.renameTo: " + src + " to " + + dst); + } + boolean stat = false; + fsd.writeLock(); + try { + stat = unprotectedRenameTo(fsd, src, dst, mtime); + } finally { + fsd.writeUnlock(); + } + return stat; + } + + /** + * @deprecated See {@link #renameTo(FSDirectory, String, String, long)} + */ + @Deprecated + private static boolean renameToInternal( + FSDirectory fsd, FSPermissionChecker pc, String src, String dst, + boolean logRetryCache) + throws IOException { + if (fsd.isPermissionEnabled()) { + //We should not be doing this. This is move() not renameTo(). + //but for now, + //NOTE: yes, this is bad! it's assuming much lower level behavior + // of rewriting the dst + String actualdst = fsd.isDir(dst) ? dst + Path.SEPARATOR + new Path + (src).getName() : dst; + // Rename does not operates on link targets + // Do not resolveLink when checking permissions of src and dst + // Check write access to parent of src + fsd.checkPermission(pc, src, false, null, FsAction.WRITE, null, null, + false, false); + // Check write access to ancestor of dst + fsd.checkPermission(pc, actualdst, false, FsAction.WRITE, null, null, + null, false, false); + } + + long mtime = now(); + @SuppressWarnings("deprecation") + final boolean stat = renameTo(fsd, src, dst, mtime); + if (stat) { + fsd.getEditLog().logRename(src, dst, mtime, logRetryCache); + return true; + } + return false; + } + + private static void renameToInternal( + FSDirectory fsd, FSPermissionChecker pc, String src, String dst, + boolean logRetryCache, BlocksMapUpdateInfo collectedBlocks, + Options.Rename... options) + throws IOException { + if (fsd.isPermissionEnabled()) { + // Rename does not operates on link targets + // Do not resolveLink when checking permissions of src and dst + // Check write access to parent of src + fsd.checkPermission(pc, src, false, null, FsAction.WRITE, null, null, + false, false); + // Check write access to ancestor of dst + fsd.checkPermission(pc, dst, false, FsAction.WRITE, null, null, null, + false, false); + } + + long mtime = now(); + renameTo(fsd, src, dst, mtime, collectedBlocks, options); + fsd.getEditLog().logRename(src, dst, mtime, logRetryCache, options); + } + + private static void validateDestination( + String src, String dst, INode srcInode) + throws IOException { + String error; + if (srcInode.isSymlink() && + dst.equals(srcInode.asSymlink().getSymlinkString())) { + throw new FileAlreadyExistsException("Cannot rename symlink " + src + + " to its target " + dst); + } + // dst cannot be a directory or a file under src + if (dst.startsWith(src) + && dst.charAt(src.length()) == Path.SEPARATOR_CHAR) { + error = "Rename destination " + dst + + " is a directory or file under source " + src; + NameNode.stateChangeLog.warn("DIR* FSDirectory.unprotectedRenameTo: " + + error); + throw new IOException(error); + } + } + + private static void validateOverwrite( + String src, String dst, boolean overwrite, INode srcInode, INode dstInode) + throws IOException { + String error;// It's OK to rename a file to a symlink and vice versa + if (dstInode.isDirectory() != srcInode.isDirectory()) { + error = "Source " + src + " and destination " + dst + + " must both be directories"; + NameNode.stateChangeLog.warn("DIR* FSDirectory.unprotectedRenameTo: " + + error); + throw new IOException(error); + } + if (!overwrite) { // If destination exists, overwrite flag must be true + error = "rename destination " + dst + " already exists"; + NameNode.stateChangeLog.warn("DIR* FSDirectory.unprotectedRenameTo: " + + error); + throw new FileAlreadyExistsException(error); + } + if (dstInode.isDirectory()) { + final ReadOnlyList children = dstInode.asDirectory() + .getChildrenList(Snapshot.CURRENT_STATE_ID); + if (!children.isEmpty()) { + error = "rename destination directory is not empty: " + dst; + NameNode.stateChangeLog.warn("DIR* FSDirectory.unprotectedRenameTo: " + + error); + throw new IOException(error); + } + } + } + + private static void validateRenameSource(String src, INodesInPath srcIIP) + throws IOException { + String error; + final INode srcInode = srcIIP.getLastINode(); + // validate source + if (srcInode == null) { + error = "rename source " + src + " is not found."; + NameNode.stateChangeLog.warn("DIR* FSDirectory.unprotectedRenameTo: " + + error); + throw new FileNotFoundException(error); + } + if (srcIIP.getINodes().length == 1) { + error = "rename source cannot be the root"; + NameNode.stateChangeLog.warn("DIR* FSDirectory.unprotectedRenameTo: " + + error); + throw new IOException(error); + } + // srcInode and its subtree cannot contain snapshottable directories with + // snapshots + FSDirSnapshotOp.checkSnapshot(srcInode, null); + } + + private static class RenameOperation { + private final FSDirectory fsd; + private final INodesInPath srcIIP; + private final INodesInPath dstIIP; + private final String src; + private final String dst; + private final INodeReference.WithCount withCount; + private final int srcRefDstSnapshot; + private final INodeDirectory srcParent; + private final byte[] srcChildName; + private final boolean isSrcInSnapshot; + private final boolean srcChildIsReference; + private final Quota.Counts oldSrcCounts; + private INode srcChild; + + RenameOperation(FSDirectory fsd, String src, String dst, + INodesInPath srcIIP, INodesInPath dstIIP) + throws QuotaExceededException { + this.fsd = fsd; + this.srcIIP = srcIIP; + this.dstIIP = dstIIP; + this.src = src; + this.dst = dst; + srcChild = srcIIP.getLastINode(); + srcChildName = srcChild.getLocalNameBytes(); + isSrcInSnapshot = srcChild.isInLatestSnapshot(srcIIP + .getLatestSnapshotId()); + srcChildIsReference = srcChild.isReference(); + srcParent = srcIIP.getINode(-2).asDirectory(); + + // Record the snapshot on srcChild. After the rename, before any new + // snapshot is taken on the dst tree, changes will be recorded in the + // latest snapshot of the src tree. + if (isSrcInSnapshot) { + srcChild.recordModification(srcIIP.getLatestSnapshotId()); + } + + // check srcChild for reference + srcRefDstSnapshot = srcChildIsReference ? + srcChild.asReference().getDstSnapshotId() : Snapshot.CURRENT_STATE_ID; + oldSrcCounts = Quota.Counts.newInstance(); + if (isSrcInSnapshot) { + final INodeReference.WithName withName = + srcIIP.getINode(-2).asDirectory().replaceChild4ReferenceWithName( + srcChild, srcIIP.getLatestSnapshotId()); + withCount = (INodeReference.WithCount) withName.getReferredINode(); + srcChild = withName; + srcIIP.setLastINode(srcChild); + // get the counts before rename + withCount.getReferredINode().computeQuotaUsage(oldSrcCounts, true); + } else if (srcChildIsReference) { + // srcChild is reference but srcChild is not in latest snapshot + withCount = (INodeReference.WithCount) srcChild.asReference() + .getReferredINode(); + } else { + withCount = null; + } + } + + boolean addSourceToDestination() { + final INode dstParent = dstIIP.getINode(-2); + srcChild = srcIIP.getLastINode(); + final byte[] dstChildName = dstIIP.getLastLocalName(); + final INode toDst; + if (withCount == null) { + srcChild.setLocalName(dstChildName); + toDst = srcChild; + } else { + withCount.getReferredINode().setLocalName(dstChildName); + int dstSnapshotId = dstIIP.getLatestSnapshotId(); + toDst = new INodeReference.DstReference(dstParent.asDirectory(), + withCount, dstSnapshotId); + } + return fsd.addLastINodeNoQuotaCheck(dstIIP, toDst); + } + + void updateMtimeAndLease(long timestamp) throws QuotaExceededException { + srcParent.updateModificationTime(timestamp, srcIIP.getLatestSnapshotId()); + final INode dstParent = dstIIP.getINode(-2); + dstParent.updateModificationTime(timestamp, dstIIP.getLatestSnapshotId()); + // update moved lease with new filename + fsd.getFSNamesystem().unprotectedChangeLease(src, dst); + } + + void restoreSource() throws QuotaExceededException { + // Rename failed - restore src + final INode oldSrcChild = srcChild; + // put it back + if (withCount == null) { + srcChild.setLocalName(srcChildName); + } else if (!srcChildIsReference) { // src must be in snapshot + // the withCount node will no longer be used thus no need to update + // its reference number here + srcChild = withCount.getReferredINode(); + srcChild.setLocalName(srcChildName); + } else { + withCount.removeReference(oldSrcChild.asReference()); + srcChild = new INodeReference.DstReference(srcParent, withCount, + srcRefDstSnapshot); + withCount.getReferredINode().setLocalName(srcChildName); + } + + if (isSrcInSnapshot) { + srcParent.undoRename4ScrParent(oldSrcChild.asReference(), srcChild); + } else { + // srcParent is not an INodeDirectoryWithSnapshot, we only need to add + // the srcChild back + fsd.addLastINodeNoQuotaCheck(srcIIP, srcChild); + } + } + + void updateQuotasInSourceTree() throws QuotaExceededException { + // update the quota usage in src tree + if (isSrcInSnapshot) { + // get the counts after rename + Quota.Counts newSrcCounts = srcChild.computeQuotaUsage( + Quota.Counts.newInstance(), false); + newSrcCounts.subtract(oldSrcCounts); + srcParent.addSpaceConsumed(newSrcCounts.get(Quota.NAMESPACE), + newSrcCounts.get(Quota.DISKSPACE), false); + } + } + } + + static class RenameOldResult { + final boolean success; + final HdfsFileStatus auditStat; + + RenameOldResult(boolean success, HdfsFileStatus auditStat) { + this.success = success; + this.auditStat = auditStat; + } + } +} diff --git a/hadoop-hdfs-project/hadoop-hdfs/src/main/java/org/apache/hadoop/hdfs/server/namenode/FSDirectory.java b/hadoop-hdfs-project/hadoop-hdfs/src/main/java/org/apache/hadoop/hdfs/server/namenode/FSDirectory.java index 0c0b2af077f..7d656f47edf 100644 --- a/hadoop-hdfs-project/hadoop-hdfs/src/main/java/org/apache/hadoop/hdfs/server/namenode/FSDirectory.java +++ b/hadoop-hdfs-project/hadoop-hdfs/src/main/java/org/apache/hadoop/hdfs/server/namenode/FSDirectory.java @@ -42,9 +42,6 @@ import org.apache.hadoop.crypto.CryptoProtocolVersion; import org.apache.hadoop.fs.ContentSummary; import org.apache.hadoop.fs.FileAlreadyExistsException; import org.apache.hadoop.fs.FileEncryptionInfo; -import org.apache.hadoop.fs.Options; -import org.apache.hadoop.fs.Options.Rename; -import org.apache.hadoop.fs.ParentNotDirectoryException; import org.apache.hadoop.fs.Path; import org.apache.hadoop.fs.PathIsNotDirectoryException; import org.apache.hadoop.fs.UnresolvedLinkException; @@ -57,7 +54,6 @@ import org.apache.hadoop.fs.permission.FsPermission; import org.apache.hadoop.fs.permission.PermissionStatus; import org.apache.hadoop.hdfs.DFSConfigKeys; import org.apache.hadoop.hdfs.DFSUtil; -import org.apache.hadoop.hdfs.DistributedFileSystem; import org.apache.hadoop.hdfs.XAttrHelper; import org.apache.hadoop.hdfs.protocol.AclException; import org.apache.hadoop.hdfs.protocol.Block; @@ -80,7 +76,6 @@ import org.apache.hadoop.hdfs.server.blockmanagement.BlockStoragePolicySuite; import org.apache.hadoop.hdfs.server.blockmanagement.DatanodeStorageInfo; import org.apache.hadoop.hdfs.server.common.HdfsServerConstants.BlockUCState; import org.apache.hadoop.hdfs.server.namenode.INode.BlocksMapUpdateInfo; -import org.apache.hadoop.hdfs.server.namenode.INodeReference.WithCount; import org.apache.hadoop.hdfs.server.namenode.snapshot.Snapshot; import org.apache.hadoop.hdfs.util.ByteArray; import org.apache.hadoop.hdfs.util.ChunkedArrayList; @@ -475,398 +470,6 @@ public class FSDirectory implements Closeable { return true; } - /** - * @throws SnapshotAccessControlException - * @see #unprotectedRenameTo(String, String, long) - * @deprecated Use {@link #renameTo(String, String, long, - * BlocksMapUpdateInfo, Rename...)} - */ - @Deprecated - boolean renameTo(String src, String dst, long mtime) - throws QuotaExceededException, UnresolvedLinkException, - FileAlreadyExistsException, SnapshotAccessControlException, IOException { - if (NameNode.stateChangeLog.isDebugEnabled()) { - NameNode.stateChangeLog.debug("DIR* FSDirectory.renameTo: " - +src+" to "+dst); - } - writeLock(); - try { - if (!unprotectedRenameTo(src, dst, mtime)) - return false; - } finally { - writeUnlock(); - } - return true; - } - - /** - * @see #unprotectedRenameTo(String, String, long, Options.Rename...) - */ - void renameTo(String src, String dst, long mtime, - BlocksMapUpdateInfo collectedBlocks, Options.Rename... options) - throws FileAlreadyExistsException, FileNotFoundException, - ParentNotDirectoryException, QuotaExceededException, - UnresolvedLinkException, IOException { - if (NameNode.stateChangeLog.isDebugEnabled()) { - NameNode.stateChangeLog.debug("DIR* FSDirectory.renameTo: " + src - + " to " + dst); - } - writeLock(); - try { - if (unprotectedRenameTo(src, dst, mtime, collectedBlocks, options)) { - namesystem.incrDeletedFileCount(1); - } - } finally { - writeUnlock(); - } - } - - /** - * Change a path name - * - * @param src source path - * @param dst destination path - * @return true if rename succeeds; false otherwise - * @throws QuotaExceededException if the operation violates any quota limit - * @throws FileAlreadyExistsException if the src is a symlink that points to dst - * @throws SnapshotAccessControlException if path is in RO snapshot - * @deprecated See {@link #renameTo(String, String, long, BlocksMapUpdateInfo, Rename...)} - */ - @Deprecated - boolean unprotectedRenameTo(String src, String dst, long timestamp) - throws QuotaExceededException, UnresolvedLinkException, - FileAlreadyExistsException, SnapshotAccessControlException, IOException { - assert hasWriteLock(); - INodesInPath srcIIP = getINodesInPath4Write(src, false); - final INode srcInode = srcIIP.getLastINode(); - try { - validateRenameSource(src, srcIIP); - } catch (SnapshotException e) { - throw e; - } catch (IOException ignored) { - return false; - } - - if (isDir(dst)) { - dst += Path.SEPARATOR + new Path(src).getName(); - } - - // validate the destination - if (dst.equals(src)) { - return true; - } - - try { - validateRenameDestination(src, dst, srcInode); - } catch (IOException ignored) { - return false; - } - - INodesInPath dstIIP = getINodesInPath4Write(dst, false); - if (dstIIP.getLastINode() != null) { - NameNode.stateChangeLog.warn("DIR* FSDirectory.unprotectedRenameTo: " - +"failed to rename "+src+" to "+dst+ - " because destination exists"); - return false; - } - INode dstParent = dstIIP.getINode(-2); - if (dstParent == null) { - NameNode.stateChangeLog.warn("DIR* FSDirectory.unprotectedRenameTo: " - +"failed to rename "+src+" to "+dst+ - " because destination's parent does not exist"); - return false; - } - - ezManager.checkMoveValidity(srcIIP, dstIIP, src); - // Ensure dst has quota to accommodate rename - verifyFsLimitsForRename(srcIIP, dstIIP); - verifyQuotaForRename(srcIIP.getINodes(), dstIIP.getINodes()); - - RenameOperation tx = new RenameOperation(src, dst, srcIIP, dstIIP); - - boolean added = false; - - try { - // remove src - final long removedSrc = removeLastINode(srcIIP); - if (removedSrc == -1) { - NameNode.stateChangeLog.warn("DIR* FSDirectory.unprotectedRenameTo: " - + "failed to rename " + src + " to " + dst - + " because the source can not be removed"); - return false; - } - - added = tx.addSourceToDestination(); - if (added) { - if (NameNode.stateChangeLog.isDebugEnabled()) { - NameNode.stateChangeLog.debug("DIR* FSDirectory.unprotectedRenameTo: " - + src + " is renamed to " + dst); - } - - tx.updateMtimeAndLease(timestamp); - tx.updateQuotasInSourceTree(); - - return true; - } - } finally { - if (!added) { - tx.restoreSource(); - } - } - NameNode.stateChangeLog.warn("DIR* FSDirectory.unprotectedRenameTo: " - +"failed to rename "+src+" to "+dst); - return false; - } - - /** - * Rename src to dst. - *
- * Note: This is to be used by {@link FSEditLog} only. - *
- * - * @param src source path - * @param dst destination path - * @param timestamp modification time - * @param options Rename options - */ - boolean unprotectedRenameTo(String src, String dst, long timestamp, - Options.Rename... options) throws FileAlreadyExistsException, - FileNotFoundException, ParentNotDirectoryException, - QuotaExceededException, UnresolvedLinkException, IOException { - BlocksMapUpdateInfo collectedBlocks = new BlocksMapUpdateInfo(); - boolean ret = unprotectedRenameTo(src, dst, timestamp, - collectedBlocks, options); - if (!collectedBlocks.getToDeleteList().isEmpty()) { - getFSNamesystem().removeBlocksAndUpdateSafemodeTotal(collectedBlocks); - } - return ret; - } - - /** - * Rename src to dst. - * See {@link DistributedFileSystem#rename(Path, Path, Options.Rename...)} - * for details related to rename semantics and exceptions. - * - * @param src source path - * @param dst destination path - * @param timestamp modification time - * @param collectedBlocks blocks to be removed - * @param options Rename options - */ - boolean unprotectedRenameTo(String src, String dst, long timestamp, - BlocksMapUpdateInfo collectedBlocks, Options.Rename... options) - throws FileAlreadyExistsException, FileNotFoundException, - ParentNotDirectoryException, QuotaExceededException, - UnresolvedLinkException, IOException { - assert hasWriteLock(); - boolean overwrite = options != null && Arrays.asList(options).contains - (Rename.OVERWRITE); - - final String error; - final INodesInPath srcIIP = getINodesInPath4Write(src, false); - final INode srcInode = srcIIP.getLastINode(); - validateRenameSource(src, srcIIP); - - // validate the destination - if (dst.equals(src)) { - throw new FileAlreadyExistsException( - "The source "+src+" and destination "+dst+" are the same"); - } - validateRenameDestination(src, dst, srcInode); - - INodesInPath dstIIP = getINodesInPath4Write(dst, false); - if (dstIIP.getINodes().length == 1) { - error = "rename destination cannot be the root"; - NameNode.stateChangeLog.warn("DIR* FSDirectory.unprotectedRenameTo: " - + error); - throw new IOException(error); - } - - ezManager.checkMoveValidity(srcIIP, dstIIP, src); - final INode dstInode = dstIIP.getLastINode(); - List snapshottableDirs = new ArrayList(); - if (dstInode != null) { // Destination exists - validateRenameOverwrite(src, dst, overwrite, srcInode, dstInode); - FSDirSnapshotOp.checkSnapshot(dstInode, snapshottableDirs); - } - - INode dstParent = dstIIP.getINode(-2); - if (dstParent == null) { - error = "rename destination parent " + dst + " not found."; - NameNode.stateChangeLog.warn("DIR* FSDirectory.unprotectedRenameTo: " - + error); - throw new FileNotFoundException(error); - } - if (!dstParent.isDirectory()) { - error = "rename destination parent " + dst + " is a file."; - NameNode.stateChangeLog.warn("DIR* FSDirectory.unprotectedRenameTo: " - + error); - throw new ParentNotDirectoryException(error); - } - - // Ensure dst has quota to accommodate rename - verifyFsLimitsForRename(srcIIP, dstIIP); - verifyQuotaForRename(srcIIP.getINodes(), dstIIP.getINodes()); - - RenameOperation tx = new RenameOperation(src, dst, srcIIP, dstIIP); - - boolean undoRemoveSrc = true; - final long removedSrc = removeLastINode(srcIIP); - if (removedSrc == -1) { - error = "Failed to rename " + src + " to " + dst - + " because the source can not be removed"; - NameNode.stateChangeLog.warn("DIR* FSDirectory.unprotectedRenameTo: " - + error); - throw new IOException(error); - } - - boolean undoRemoveDst = false; - INode removedDst = null; - long removedNum = 0; - try { - if (dstInode != null) { // dst exists remove it - if ((removedNum = removeLastINode(dstIIP)) != -1) { - removedDst = dstIIP.getLastINode(); - undoRemoveDst = true; - } - } - - // add src as dst to complete rename - if (tx.addSourceToDestination()) { - undoRemoveSrc = false; - if (NameNode.stateChangeLog.isDebugEnabled()) { - NameNode.stateChangeLog.debug( - "DIR* FSDirectory.unprotectedRenameTo: " + src - + " is renamed to " + dst); - } - - tx.updateMtimeAndLease(timestamp); - - // Collect the blocks and remove the lease for previous dst - boolean filesDeleted = false; - if (removedDst != null) { - undoRemoveDst = false; - if (removedNum > 0) { - List removedINodes = new ChunkedArrayList(); - if (!removedDst.isInLatestSnapshot(dstIIP.getLatestSnapshotId())) { - removedDst.destroyAndCollectBlocks(collectedBlocks, removedINodes); - filesDeleted = true; - } else { - filesDeleted = removedDst.cleanSubtree(Snapshot.CURRENT_STATE_ID, - dstIIP.getLatestSnapshotId(), collectedBlocks, removedINodes, - true).get(Quota.NAMESPACE) >= 0; - } - getFSNamesystem().removePathAndBlocks(src, null, - removedINodes, false); - } - } - - if (snapshottableDirs.size() > 0) { - // There are snapshottable directories (without snapshots) to be - // deleted. Need to update the SnapshotManager. - namesystem.removeSnapshottableDirs(snapshottableDirs); - } - - tx.updateQuotasInSourceTree(); - return filesDeleted; - } - } finally { - if (undoRemoveSrc) { - tx.restoreSource(); - } - - if (undoRemoveDst) { - // Rename failed - restore dst - if (dstParent.isDirectory() && dstParent.asDirectory().isWithSnapshot()) { - dstParent.asDirectory().undoRename4DstParent(removedDst, - dstIIP.getLatestSnapshotId()); - } else { - addLastINodeNoQuotaCheck(dstIIP, removedDst); - } - if (removedDst.isReference()) { - final INodeReference removedDstRef = removedDst.asReference(); - final INodeReference.WithCount wc = - (WithCount) removedDstRef.getReferredINode().asReference(); - wc.addReference(removedDstRef); - } - } - } - NameNode.stateChangeLog.warn("DIR* FSDirectory.unprotectedRenameTo: " - + "failed to rename " + src + " to " + dst); - throw new IOException("rename from " + src + " to " + dst + " failed."); - } - - private static void validateRenameOverwrite(String src, String dst, - boolean overwrite, - INode srcInode, INode dstInode) - throws IOException { - String error;// It's OK to rename a file to a symlink and vice versa - if (dstInode.isDirectory() != srcInode.isDirectory()) { - error = "Source " + src + " and destination " + dst - + " must both be directories"; - NameNode.stateChangeLog.warn("DIR* FSDirectory.unprotectedRenameTo: " - + error); - throw new IOException(error); - } - if (!overwrite) { // If destination exists, overwrite flag must be true - error = "rename destination " + dst + " already exists"; - NameNode.stateChangeLog.warn("DIR* FSDirectory.unprotectedRenameTo: " - + error); - throw new FileAlreadyExistsException(error); - } - if (dstInode.isDirectory()) { - final ReadOnlyList children = dstInode.asDirectory() - .getChildrenList(Snapshot.CURRENT_STATE_ID); - if (!children.isEmpty()) { - error = "rename destination directory is not empty: " + dst; - NameNode.stateChangeLog.warn( - "DIR* FSDirectory.unprotectedRenameTo: " + error); - throw new IOException(error); - } - } - } - - private static void validateRenameDestination(String src, String dst, INode srcInode) - throws IOException { - String error; - if (srcInode.isSymlink() && - dst.equals(srcInode.asSymlink().getSymlinkString())) { - throw new FileAlreadyExistsException( - "Cannot rename symlink "+src+" to its target "+dst); - } - // dst cannot be a directory or a file under src - if (dst.startsWith(src) && - dst.charAt(src.length()) == Path.SEPARATOR_CHAR) { - error = "Rename destination " + dst - + " is a directory or file under source " + src; - NameNode.stateChangeLog.warn("DIR* FSDirectory.unprotectedRenameTo: " - + error); - throw new IOException(error); - } - } - - private static void validateRenameSource(String src, INodesInPath srcIIP) - throws IOException { - String error; - final INode srcInode = srcIIP.getLastINode(); - // validate source - if (srcInode == null) { - error = "rename source " + src + " is not found."; - NameNode.stateChangeLog.warn("DIR* FSDirectory.unprotectedRenameTo: " - + error); - throw new FileNotFoundException(error); - } - if (srcIIP.getINodes().length == 1) { - error = "rename source cannot be the root"; - NameNode.stateChangeLog.warn("DIR* FSDirectory.unprotectedRenameTo: " - + error); - throw new IOException(error); - } - // srcInode and its subtree cannot contain snapshottable directories with - // snapshots - FSDirSnapshotOp.checkSnapshot(srcInode, null); - } - /** * This is a wrapper for resolvePath(). If the path passed * is prefixed with /.reserved/raw, then it checks to ensure that the caller @@ -890,126 +493,6 @@ public class FSDirectory implements Closeable { return resolvePath(path, pathComponents, this); } - private class RenameOperation { - private final INodesInPath srcIIP; - private final INodesInPath dstIIP; - private final String src; - private final String dst; - - private INode srcChild; - private final INodeReference.WithCount withCount; - private final int srcRefDstSnapshot; - private final INodeDirectory srcParent; - private final byte[] srcChildName; - private final boolean isSrcInSnapshot; - private final boolean srcChildIsReference; - private final Quota.Counts oldSrcCounts; - - private RenameOperation(String src, String dst, INodesInPath srcIIP, INodesInPath dstIIP) - throws QuotaExceededException { - this.srcIIP = srcIIP; - this.dstIIP = dstIIP; - this.src = src; - this.dst = dst; - srcChild = srcIIP.getLastINode(); - srcChildName = srcChild.getLocalNameBytes(); - isSrcInSnapshot = srcChild.isInLatestSnapshot( - srcIIP.getLatestSnapshotId()); - srcChildIsReference = srcChild.isReference(); - srcParent = srcIIP.getINode(-2).asDirectory(); - - // Record the snapshot on srcChild. After the rename, before any new - // snapshot is taken on the dst tree, changes will be recorded in the latest - // snapshot of the src tree. - if (isSrcInSnapshot) { - srcChild.recordModification(srcIIP.getLatestSnapshotId()); - } - - // check srcChild for reference - srcRefDstSnapshot = srcChildIsReference ? srcChild.asReference() - .getDstSnapshotId() : Snapshot.CURRENT_STATE_ID; - oldSrcCounts = Quota.Counts.newInstance(); - if (isSrcInSnapshot) { - final INodeReference.WithName withName = srcIIP.getINode(-2).asDirectory() - .replaceChild4ReferenceWithName(srcChild, srcIIP.getLatestSnapshotId()); - withCount = (INodeReference.WithCount) withName.getReferredINode(); - srcChild = withName; - srcIIP.setLastINode(srcChild); - // get the counts before rename - withCount.getReferredINode().computeQuotaUsage(oldSrcCounts, true); - } else if (srcChildIsReference) { - // srcChild is reference but srcChild is not in latest snapshot - withCount = (WithCount) srcChild.asReference().getReferredINode(); - } else { - withCount = null; - } - } - - boolean addSourceToDestination() { - final INode dstParent = dstIIP.getINode(-2); - srcChild = srcIIP.getLastINode(); - final byte[] dstChildName = dstIIP.getLastLocalName(); - final INode toDst; - if (withCount == null) { - srcChild.setLocalName(dstChildName); - toDst = srcChild; - } else { - withCount.getReferredINode().setLocalName(dstChildName); - int dstSnapshotId = dstIIP.getLatestSnapshotId(); - toDst = new INodeReference.DstReference( - dstParent.asDirectory(), withCount, dstSnapshotId); - } - return addLastINodeNoQuotaCheck(dstIIP, toDst); - } - - void updateMtimeAndLease(long timestamp) throws QuotaExceededException { - srcParent.updateModificationTime(timestamp, srcIIP.getLatestSnapshotId()); - final INode dstParent = dstIIP.getINode(-2); - dstParent.updateModificationTime(timestamp, dstIIP.getLatestSnapshotId()); - // update moved lease with new filename - getFSNamesystem().unprotectedChangeLease(src, dst); - } - - void restoreSource() throws QuotaExceededException { - // Rename failed - restore src - final INode oldSrcChild = srcChild; - // put it back - if (withCount == null) { - srcChild.setLocalName(srcChildName); - } else if (!srcChildIsReference) { // src must be in snapshot - // the withCount node will no longer be used thus no need to update - // its reference number here - srcChild = withCount.getReferredINode(); - srcChild.setLocalName(srcChildName); - } else { - withCount.removeReference(oldSrcChild.asReference()); - srcChild = new INodeReference.DstReference( - srcParent, withCount, srcRefDstSnapshot); - withCount.getReferredINode().setLocalName(srcChildName); - } - - if (isSrcInSnapshot) { - srcParent.undoRename4ScrParent(oldSrcChild.asReference(), srcChild); - } else { - // srcParent is not an INodeDirectoryWithSnapshot, we only need to add - // the srcChild back - addLastINodeNoQuotaCheck(srcIIP, srcChild); - } - } - - void updateQuotasInSourceTree() throws QuotaExceededException { - // update the quota usage in src tree - if (isSrcInSnapshot) { - // get the counts after rename - Quota.Counts newSrcCounts = srcChild.computeQuotaUsage( - Quota.Counts.newInstance(), false); - newSrcCounts.subtract(oldSrcCounts); - srcParent.addSpaceConsumed(newSrcCounts.get(Quota.NAMESPACE), - newSrcCounts.get(Quota.DISKSPACE), false); - } - } - } - /** * Set file replication * @@ -1695,7 +1178,7 @@ public class FSDirectory implements Closeable { * @param dst directory to where node is moved to. * @throws QuotaExceededException if quota limit is exceeded. */ - private void verifyQuotaForRename(INode[] src, INode[] dst) + void verifyQuotaForRename(INode[] src, INode[] dst) throws QuotaExceededException { if (!namesystem.isImageLoaded() || skipQuotaCheck) { // Do not check quota if edits log is still being processed @@ -1725,7 +1208,7 @@ public class FSDirectory implements Closeable { * @throws PathComponentTooLongException child's name is too long. * @throws MaxDirectoryItemsExceededException too many children. */ - private void verifyFsLimitsForRename(INodesInPath srcIIP, INodesInPath dstIIP) + void verifyFsLimitsForRename(INodesInPath srcIIP, INodesInPath dstIIP) throws PathComponentTooLongException, MaxDirectoryItemsExceededException { byte[] dstChildName = dstIIP.getLastLocalName(); INode[] dstInodes = dstIIP.getINodes(); @@ -1884,7 +1367,7 @@ public class FSDirectory implements Closeable { return added; } - private boolean addLastINodeNoQuotaCheck(INodesInPath inodesInPath, INode i) { + boolean addLastINodeNoQuotaCheck(INodesInPath inodesInPath, INode i) { try { return addLastINode(inodesInPath, i, false); } catch (QuotaExceededException e) { @@ -1901,7 +1384,7 @@ public class FSDirectory implements Closeable { * reference nodes; * >0 otherwise. */ - private long removeLastINode(final INodesInPath iip) + long removeLastINode(final INodesInPath iip) throws QuotaExceededException { final int latestSnapshot = iip.getLatestSnapshotId(); final INode last = iip.getLastINode(); diff --git a/hadoop-hdfs-project/hadoop-hdfs/src/main/java/org/apache/hadoop/hdfs/server/namenode/FSEditLogLoader.java b/hadoop-hdfs-project/hadoop-hdfs/src/main/java/org/apache/hadoop/hdfs/server/namenode/FSEditLogLoader.java index d57d9b88a90..1c89849f90f 100644 --- a/hadoop-hdfs-project/hadoop-hdfs/src/main/java/org/apache/hadoop/hdfs/server/namenode/FSEditLogLoader.java +++ b/hadoop-hdfs-project/hadoop-hdfs/src/main/java/org/apache/hadoop/hdfs/server/namenode/FSEditLogLoader.java @@ -508,8 +508,7 @@ public class FSEditLogLoader { RenameOldOp renameOp = (RenameOldOp)op; final String src = renameReservedPathsOnUpgrade(renameOp.src, logVersion); final String dst = renameReservedPathsOnUpgrade(renameOp.dst, logVersion); - fsDir.unprotectedRenameTo(src, dst, - renameOp.timestamp); + FSDirRenameOp.unprotectedRenameTo(fsDir, src, dst, renameOp.timestamp); if (toAddRetryCache) { fsNamesys.addCacheEntry(renameOp.rpcClientId, renameOp.rpcCallId); @@ -601,7 +600,7 @@ public class FSEditLogLoader { } case OP_RENAME: { RenameOp renameOp = (RenameOp)op; - fsDir.unprotectedRenameTo( + FSDirRenameOp.unprotectedRenameTo(fsDir, renameReservedPathsOnUpgrade(renameOp.src, logVersion), renameReservedPathsOnUpgrade(renameOp.dst, logVersion), renameOp.timestamp, renameOp.options); diff --git a/hadoop-hdfs-project/hadoop-hdfs/src/main/java/org/apache/hadoop/hdfs/server/namenode/FSImage.java b/hadoop-hdfs-project/hadoop-hdfs/src/main/java/org/apache/hadoop/hdfs/server/namenode/FSImage.java index 4624a706175..8ac6926850e 100644 --- a/hadoop-hdfs-project/hadoop-hdfs/src/main/java/org/apache/hadoop/hdfs/server/namenode/FSImage.java +++ b/hadoop-hdfs-project/hadoop-hdfs/src/main/java/org/apache/hadoop/hdfs/server/namenode/FSImage.java @@ -554,11 +554,6 @@ public class FSImage implements Closeable { return editLog; } - @VisibleForTesting - public void setEditLogForTesting(FSEditLog newLog) { - editLog = newLog; - } - void openEditLogForWrite() throws IOException { assert editLog != null : "editLog must be initialized"; editLog.openForWrite(); diff --git a/hadoop-hdfs-project/hadoop-hdfs/src/main/java/org/apache/hadoop/hdfs/server/namenode/FSNamesystem.java b/hadoop-hdfs-project/hadoop-hdfs/src/main/java/org/apache/hadoop/hdfs/server/namenode/FSNamesystem.java index 543f47a9735..47d645594c1 100644 --- a/hadoop-hdfs-project/hadoop-hdfs/src/main/java/org/apache/hadoop/hdfs/server/namenode/FSNamesystem.java +++ b/hadoop-hdfs-project/hadoop-hdfs/src/main/java/org/apache/hadoop/hdfs/server/namenode/FSNamesystem.java @@ -149,7 +149,6 @@ import org.apache.hadoop.fs.FileStatus; import org.apache.hadoop.fs.FsServerDefaults; import org.apache.hadoop.fs.InvalidPathException; import org.apache.hadoop.fs.Options; -import org.apache.hadoop.fs.Options.Rename; import org.apache.hadoop.fs.ParentNotDirectoryException; import org.apache.hadoop.fs.Path; import org.apache.hadoop.fs.PathIsNotEmptyDirectoryException; @@ -3561,155 +3560,62 @@ public class FSNamesystem implements Namesystem, FSNamesystemMBean, */ @Deprecated boolean renameTo(String src, String dst, boolean logRetryCache) - throws IOException, UnresolvedLinkException { - boolean ret = false; + throws IOException { + waitForLoadingFSImage(); + checkOperation(OperationCategory.WRITE); + FSDirRenameOp.RenameOldResult ret = null; + writeLock(); try { - ret = renameToInt(src, dst, logRetryCache); - } catch (AccessControlException e) { + checkOperation(OperationCategory.WRITE); + checkNameNodeSafeMode("Cannot rename " + src); + ret = FSDirRenameOp.renameToInt(dir, src, dst, logRetryCache); + } catch (AccessControlException e) { logAuditEvent(false, "rename", src, dst, null); throw e; + } finally { + writeUnlock(); } - return ret; + boolean success = ret != null && ret.success; + if (success) { + getEditLog().logSync(); + } + logAuditEvent(success, "rename", src, dst, + ret == null ? null : ret.auditStat); + return success; } - private boolean renameToInt(final String srcArg, final String dstArg, - boolean logRetryCache) - throws IOException, UnresolvedLinkException { - String src = srcArg; - String dst = dstArg; - if (NameNode.stateChangeLog.isDebugEnabled()) { - NameNode.stateChangeLog.debug("DIR* NameSystem.renameTo: " + src + - " to " + dst); - } - if (!DFSUtil.isValidName(dst)) { - throw new IOException("Invalid name: " + dst); - } - FSPermissionChecker pc = getPermissionChecker(); + void renameTo(final String src, final String dst, + boolean logRetryCache, Options.Rename... options) + throws IOException { + waitForLoadingFSImage(); checkOperation(OperationCategory.WRITE); - byte[][] srcComponents = FSDirectory.getPathComponentsForReservedPath(src); - byte[][] dstComponents = FSDirectory.getPathComponentsForReservedPath(dst); - boolean status = false; - HdfsFileStatus resultingStat = null; + Map.Entry res = null; writeLock(); try { checkOperation(OperationCategory.WRITE); checkNameNodeSafeMode("Cannot rename " + src); - waitForLoadingFSImage(); - src = dir.resolvePath(pc, src, srcComponents); - dst = dir.resolvePath(pc, dst, dstComponents); - checkOperation(OperationCategory.WRITE); - status = renameToInternal(pc, src, dst, logRetryCache); - if (status) { - resultingStat = getAuditFileInfo(dst, false); - } + res = FSDirRenameOp.renameToInt(dir, src, dst, logRetryCache, options); + } catch (AccessControlException e) { + logAuditEvent(false, "rename (options=" + Arrays.toString(options) + + ")", src, dst, null); + throw e; } finally { writeUnlock(); } + getEditLog().logSync(); - if (status) { - logAuditEvent(true, "rename", srcArg, dstArg, resultingStat); - } - return status; - } - /** @deprecated See {@link #renameTo(String, String, boolean)} */ - @Deprecated - private boolean renameToInternal(FSPermissionChecker pc, String src, - String dst, boolean logRetryCache) throws IOException, - UnresolvedLinkException { - assert hasWriteLock(); - if (isPermissionEnabled) { - //We should not be doing this. This is move() not renameTo(). - //but for now, - //NOTE: yes, this is bad! it's assuming much lower level behavior - // of rewriting the dst - String actualdst = dir.isDir(dst)? - dst + Path.SEPARATOR + new Path(src).getName(): dst; - // Rename does not operates on link targets - // Do not resolveLink when checking permissions of src and dst - // Check write access to parent of src - checkPermission(pc, src, false, null, FsAction.WRITE, null, null, - false, false); - // Check write access to ancestor of dst - checkPermission(pc, actualdst, false, FsAction.WRITE, null, null, null, - false, false); - } - - long mtime = now(); - if (dir.renameTo(src, dst, mtime)) { - getEditLog().logRename(src, dst, mtime, logRetryCache); - return true; - } - return false; - } - - - /** Rename src to dst */ - void renameTo(final String srcArg, final String dstArg, boolean logRetryCache, - Options.Rename... options) throws IOException, UnresolvedLinkException { - String src = srcArg; - String dst = dstArg; - if (NameNode.stateChangeLog.isDebugEnabled()) { - NameNode.stateChangeLog.debug("DIR* NameSystem.renameTo: with options - " - + src + " to " + dst); - } - if (!DFSUtil.isValidName(dst)) { - throw new InvalidPathException("Invalid name: " + dst); - } - final FSPermissionChecker pc = getPermissionChecker(); - - checkOperation(OperationCategory.WRITE); - - byte[][] srcComponents = FSDirectory.getPathComponentsForReservedPath(src); - byte[][] dstComponents = FSDirectory.getPathComponentsForReservedPath(dst); - HdfsFileStatus resultingStat = null; - writeLock(); - BlocksMapUpdateInfo collectedBlocks = new BlocksMapUpdateInfo(); - try { - checkOperation(OperationCategory.WRITE); - checkNameNodeSafeMode("Cannot rename " + src); - src = dir.resolvePath(pc, src, srcComponents); - dst = dir.resolvePath(pc, dst, dstComponents); - renameToInternal(pc, src, dst, logRetryCache, collectedBlocks, options); - resultingStat = getAuditFileInfo(dst, false); - } finally { - writeUnlock(); - } - getEditLog().logSync(); + BlocksMapUpdateInfo collectedBlocks = res.getKey(); + HdfsFileStatus auditStat = res.getValue(); if (!collectedBlocks.getToDeleteList().isEmpty()) { removeBlocks(collectedBlocks); collectedBlocks.clear(); } - if (resultingStat != null) { - StringBuilder cmd = new StringBuilder("rename options="); - for (Rename option : options) { - cmd.append(option.value()).append(" "); - } - logAuditEvent(true, cmd.toString(), srcArg, dstArg, resultingStat); - } + + logAuditEvent(true, "rename (options=" + Arrays.toString(options) + + ")", src, dst, auditStat); } - private void renameToInternal(FSPermissionChecker pc, String src, - String dst, boolean logRetryCache, BlocksMapUpdateInfo collectedBlocks, - Options.Rename... options) throws IOException { - assert hasWriteLock(); - if (isPermissionEnabled) { - // Rename does not operates on link targets - // Do not resolveLink when checking permissions of src and dst - // Check write access to parent of src - checkPermission(pc, src, false, null, FsAction.WRITE, null, null, false, - false); - // Check write access to ancestor of dst - checkPermission(pc, dst, false, FsAction.WRITE, null, null, null, false, - false); - } - - waitForLoadingFSImage(); - long mtime = now(); - dir.renameTo(src, dst, mtime, collectedBlocks, options); - getEditLog().logRename(src, dst, mtime, logRetryCache, options); - } - /** * Remove the indicated file from namespace. * diff --git a/hadoop-hdfs-project/hadoop-hdfs/src/test/java/org/apache/hadoop/hdfs/DFSTestUtil.java b/hadoop-hdfs-project/hadoop-hdfs/src/test/java/org/apache/hadoop/hdfs/DFSTestUtil.java index 4e853114fac..3814ffcb6ef 100644 --- a/hadoop-hdfs-project/hadoop-hdfs/src/test/java/org/apache/hadoop/hdfs/DFSTestUtil.java +++ b/hadoop-hdfs-project/hadoop-hdfs/src/test/java/org/apache/hadoop/hdfs/DFSTestUtil.java @@ -61,6 +61,7 @@ import org.apache.hadoop.hdfs.server.datanode.DataNode; import org.apache.hadoop.hdfs.server.datanode.DataNodeLayoutVersion; import org.apache.hadoop.hdfs.server.datanode.TestTransferRbw; import org.apache.hadoop.hdfs.server.datanode.fsdataset.FsDatasetSpi; +import org.apache.hadoop.hdfs.server.namenode.FSEditLog; import org.apache.hadoop.hdfs.server.namenode.FSNamesystem; import org.apache.hadoop.hdfs.server.namenode.NameNode; import org.apache.hadoop.hdfs.server.namenode.ha @@ -81,6 +82,7 @@ import org.apache.hadoop.util.StringUtils; import org.apache.hadoop.util.Tool; import org.apache.hadoop.util.VersionInfo; import org.junit.Assume; +import org.mockito.internal.util.reflection.Whitebox; import java.io.*; import java.lang.reflect.Field; @@ -195,6 +197,12 @@ public class DFSTestUtil { logicalName, "nn2"), "127.0.0.1:12346"); } + public static void setEditLogForTesting(NameNode nn, FSEditLog newLog) { + Whitebox.setInternalState(nn.getFSImage(), "editLog", newLog); + Whitebox.setInternalState(nn.getNamesystem().getFSDirectory(), "editLog", + newLog); + } + /** class MyFile contains enough information to recreate the contents of * a single file. diff --git a/hadoop-hdfs-project/hadoop-hdfs/src/test/java/org/apache/hadoop/hdfs/TestRenameWhileOpen.java b/hadoop-hdfs-project/hadoop-hdfs/src/test/java/org/apache/hadoop/hdfs/TestRenameWhileOpen.java index a5d04253b7e..2ee72e8e006 100644 --- a/hadoop-hdfs-project/hadoop-hdfs/src/test/java/org/apache/hadoop/hdfs/TestRenameWhileOpen.java +++ b/hadoop-hdfs-project/hadoop-hdfs/src/test/java/org/apache/hadoop/hdfs/TestRenameWhileOpen.java @@ -77,7 +77,7 @@ public class TestRenameWhileOpen { FSEditLog spyLog = spy(cluster.getNameNode().getFSImage().getEditLog()); doNothing().when(spyLog).endCurrentLogSegment(Mockito.anyBoolean()); - cluster.getNameNode().getFSImage().setEditLogForTesting(spyLog); + DFSTestUtil.setEditLogForTesting(cluster.getNameNode(), spyLog); final int nnport = cluster.getNameNodePort(); diff --git a/hadoop-hdfs-project/hadoop-hdfs/src/test/java/org/apache/hadoop/hdfs/server/namenode/NameNodeAdapter.java b/hadoop-hdfs-project/hadoop-hdfs/src/test/java/org/apache/hadoop/hdfs/server/namenode/NameNodeAdapter.java index 1a42e284d8b..e3cd918bc48 100644 --- a/hadoop-hdfs-project/hadoop-hdfs/src/test/java/org/apache/hadoop/hdfs/server/namenode/NameNodeAdapter.java +++ b/hadoop-hdfs-project/hadoop-hdfs/src/test/java/org/apache/hadoop/hdfs/server/namenode/NameNodeAdapter.java @@ -26,6 +26,7 @@ import java.util.concurrent.locks.ReentrantReadWriteLock; import org.apache.hadoop.fs.UnresolvedLinkException; import org.apache.hadoop.fs.permission.FsPermission; import org.apache.hadoop.fs.permission.PermissionStatus; +import org.apache.hadoop.hdfs.DFSTestUtil; import org.apache.hadoop.hdfs.protocol.DatanodeID; import org.apache.hadoop.hdfs.protocol.HdfsFileStatus; import org.apache.hadoop.hdfs.protocol.LocatedBlocks; @@ -187,7 +188,7 @@ public class NameNodeAdapter { public static FSEditLog spyOnEditLog(NameNode nn) { FSEditLog spyEditLog = spy(nn.getNamesystem().getFSImage().getEditLog()); - nn.getFSImage().setEditLogForTesting(spyEditLog); + DFSTestUtil.setEditLogForTesting(nn, spyEditLog); EditLogTailer tailer = nn.getNamesystem().getEditLogTailer(); if (tailer != null) { tailer.setEditLog(spyEditLog); diff --git a/hadoop-hdfs-project/hadoop-hdfs/src/test/java/org/apache/hadoop/hdfs/server/namenode/TestNameNodeRecovery.java b/hadoop-hdfs-project/hadoop-hdfs/src/test/java/org/apache/hadoop/hdfs/server/namenode/TestNameNodeRecovery.java index 178c127ffc1..c19c469e543 100644 --- a/hadoop-hdfs-project/hadoop-hdfs/src/test/java/org/apache/hadoop/hdfs/server/namenode/TestNameNodeRecovery.java +++ b/hadoop-hdfs-project/hadoop-hdfs/src/test/java/org/apache/hadoop/hdfs/server/namenode/TestNameNodeRecovery.java @@ -37,6 +37,7 @@ import org.apache.hadoop.conf.Configuration; import org.apache.hadoop.fs.FileSystem; import org.apache.hadoop.fs.Path; import org.apache.hadoop.hdfs.DFSConfigKeys; +import org.apache.hadoop.hdfs.DFSTestUtil; import org.apache.hadoop.hdfs.DFSUtil; import org.apache.hadoop.hdfs.HdfsConfiguration; import org.apache.hadoop.hdfs.MiniDFSCluster; @@ -540,7 +541,7 @@ public class TestNameNodeRecovery { FSEditLog spyLog = spy(cluster.getNameNode().getFSImage().getEditLog()); doNothing().when(spyLog).endCurrentLogSegment(true); - cluster.getNameNode().getFSImage().setEditLogForTesting(spyLog); + DFSTestUtil.setEditLogForTesting(cluster.getNameNode(), spyLog); } fileSys = cluster.getFileSystem(); final FSNamesystem namesystem = cluster.getNamesystem();