HDFS-7450. Consolidate the implementation of GetFileInfo(), GetListings() and GetContentSummary() into a single class. Contributed by Haohui Mai.
This commit is contained in:
Haohui Mai
parent
9fa2990257
commit
0af44ea846
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@ -407,6 +407,9 @@ Release 2.7.0 - UNRELEASED
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HDFS-7210. Avoid two separate RPC's namenode.append() and namenode.getFileInfo()
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for an append call from DFSClient. (Vinayakumar B via umamahesh)
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HDFS-7450. Consolidate the implementation of GetFileInfo(), GetListings() and
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GetContentSummary() into a single class. (wheat9)
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OPTIMIZATIONS
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BUG FIXES
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@ -0,0 +1,480 @@
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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;
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import com.google.common.base.Preconditions;
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import org.apache.hadoop.fs.ContentSummary;
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import org.apache.hadoop.fs.DirectoryListingStartAfterNotFoundException;
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import org.apache.hadoop.fs.FileEncryptionInfo;
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import org.apache.hadoop.fs.InvalidPathException;
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import org.apache.hadoop.fs.UnresolvedLinkException;
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import org.apache.hadoop.fs.permission.FsAction;
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import org.apache.hadoop.fs.permission.FsPermission;
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import org.apache.hadoop.hdfs.DFSUtil;
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import org.apache.hadoop.hdfs.protocol.DirectoryListing;
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import org.apache.hadoop.hdfs.protocol.FsPermissionExtension;
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import org.apache.hadoop.hdfs.protocol.HdfsConstants;
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import org.apache.hadoop.hdfs.protocol.HdfsFileStatus;
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import org.apache.hadoop.hdfs.protocol.HdfsLocatedFileStatus;
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import org.apache.hadoop.hdfs.protocol.LocatedBlock;
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import org.apache.hadoop.hdfs.protocol.LocatedBlocks;
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import org.apache.hadoop.hdfs.protocol.SnapshotException;
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import org.apache.hadoop.hdfs.server.blockmanagement.BlockStoragePolicySuite;
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import org.apache.hadoop.hdfs.server.namenode.snapshot.DirectorySnapshottableFeature;
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import org.apache.hadoop.hdfs.server.namenode.snapshot.Snapshot;
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import org.apache.hadoop.hdfs.util.ReadOnlyList;
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import java.io.FileNotFoundException;
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import java.io.IOException;
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import java.util.Arrays;
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class FSDirStatAndListingOp {
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static DirectoryListing getListingInt(
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FSDirectory fsd, final String srcArg, byte[] startAfter,
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boolean needLocation)
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throws IOException {
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String src = srcArg;
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FSPermissionChecker pc = fsd.getPermissionChecker();
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byte[][] pathComponents = FSDirectory.getPathComponentsForReservedPath(src);
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String startAfterString = new String(startAfter);
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src = fsd.resolvePath(pc, src, pathComponents);
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// Get file name when startAfter is an INodePath
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if (FSDirectory.isReservedName(startAfterString)) {
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byte[][] startAfterComponents = FSDirectory
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.getPathComponentsForReservedPath(startAfterString);
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try {
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String tmp = FSDirectory.resolvePath(src, startAfterComponents, fsd);
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byte[][] regularPath = INode.getPathComponents(tmp);
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startAfter = regularPath[regularPath.length - 1];
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} catch (IOException e) {
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// Possibly the inode is deleted
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throw new DirectoryListingStartAfterNotFoundException(
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"Can't find startAfter " + startAfterString);
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}
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}
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boolean isSuperUser = true;
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if (fsd.isPermissionEnabled()) {
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if (fsd.isDir(src)) {
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fsd.checkPathAccess(pc, src, FsAction.READ_EXECUTE);
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} else {
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fsd.checkTraverse(pc, src);
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}
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isSuperUser = pc.isSuperUser();
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}
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return getListing(fsd, src, startAfter, needLocation, isSuperUser);
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}
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/**
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* Get the file info for a specific file.
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*
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* @param srcArg The string representation of the path to the file
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* @param resolveLink whether to throw UnresolvedLinkException
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* if src refers to a symlink
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*
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* @return object containing information regarding the file
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* or null if file not found
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*/
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static HdfsFileStatus getFileInfo(
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FSDirectory fsd, String srcArg, boolean resolveLink)
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throws IOException {
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String src = srcArg;
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if (!DFSUtil.isValidName(src)) {
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throw new InvalidPathException("Invalid file name: " + src);
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}
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FSPermissionChecker pc = fsd.getPermissionChecker();
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byte[][] pathComponents = FSDirectory.getPathComponentsForReservedPath(src);
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src = fsd.resolvePath(pc, src, pathComponents);
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boolean isSuperUser = true;
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if (fsd.isPermissionEnabled()) {
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fsd.checkPermission(pc, src, false, null, null, null, null, false,
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resolveLink);
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isSuperUser = pc.isSuperUser();
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}
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return getFileInfo(fsd, src, resolveLink,
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FSDirectory.isReservedRawName(srcArg), isSuperUser);
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}
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/**
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* Returns true if the file is closed
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*/
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static boolean isFileClosed(FSDirectory fsd, String src) throws IOException {
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FSPermissionChecker pc = fsd.getPermissionChecker();
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byte[][] pathComponents = FSDirectory.getPathComponentsForReservedPath(src);
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src = fsd.resolvePath(pc, src, pathComponents);
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if (fsd.isPermissionEnabled()) {
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fsd.checkTraverse(pc, src);
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}
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return !INodeFile.valueOf(fsd.getINode(src), src).isUnderConstruction();
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}
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static ContentSummary getContentSummary(
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FSDirectory fsd, String src) throws IOException {
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byte[][] pathComponents = FSDirectory.getPathComponentsForReservedPath(src);
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FSPermissionChecker pc = fsd.getPermissionChecker();
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src = fsd.resolvePath(pc, src, pathComponents);
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if (fsd.isPermissionEnabled()) {
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fsd.checkPermission(pc, src, false, null, null, null,
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FsAction.READ_EXECUTE);
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}
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return getContentSummaryInt(fsd, src);
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}
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/**
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* Get a partial listing of the indicated directory
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*
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* We will stop when any of the following conditions is met:
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* 1) this.lsLimit files have been added
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* 2) needLocation is true AND enough files have been added such
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* that at least this.lsLimit block locations are in the response
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*
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* @param fsd FSDirectory
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* @param src the directory name
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* @param startAfter the name to start listing after
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* @param needLocation if block locations are returned
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* @return a partial listing starting after startAfter
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*/
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private static DirectoryListing getListing(
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FSDirectory fsd, String src, byte[] startAfter, boolean needLocation,
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boolean isSuperUser)
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throws IOException {
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String srcs = FSDirectory.normalizePath(src);
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final boolean isRawPath = FSDirectory.isReservedRawName(src);
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fsd.readLock();
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try {
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if (srcs.endsWith(HdfsConstants.SEPARATOR_DOT_SNAPSHOT_DIR)) {
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return getSnapshotsListing(fsd, srcs, startAfter);
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}
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final INodesInPath inodesInPath = fsd.getINodesInPath(srcs, true);
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final INode[] inodes = inodesInPath.getINodes();
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final int snapshot = inodesInPath.getPathSnapshotId();
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final INode targetNode = inodes[inodes.length - 1];
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if (targetNode == null)
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return null;
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byte parentStoragePolicy = isSuperUser ?
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targetNode.getStoragePolicyID() : BlockStoragePolicySuite
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.ID_UNSPECIFIED;
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if (!targetNode.isDirectory()) {
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return new DirectoryListing(
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new HdfsFileStatus[]{createFileStatus(fsd,
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HdfsFileStatus.EMPTY_NAME, targetNode, needLocation,
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parentStoragePolicy, snapshot, isRawPath, inodesInPath)}, 0);
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}
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final INodeDirectory dirInode = targetNode.asDirectory();
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final ReadOnlyList<INode> contents = dirInode.getChildrenList(snapshot);
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int startChild = INodeDirectory.nextChild(contents, startAfter);
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int totalNumChildren = contents.size();
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int numOfListing = Math.min(totalNumChildren - startChild,
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fsd.getLsLimit());
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int locationBudget = fsd.getLsLimit();
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int listingCnt = 0;
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HdfsFileStatus listing[] = new HdfsFileStatus[numOfListing];
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for (int i=0; i<numOfListing && locationBudget>0; i++) {
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INode cur = contents.get(startChild+i);
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byte curPolicy = isSuperUser && !cur.isSymlink()?
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cur.getLocalStoragePolicyID():
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BlockStoragePolicySuite.ID_UNSPECIFIED;
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listing[i] = createFileStatus(fsd, cur.getLocalNameBytes(), cur,
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needLocation, fsd.getStoragePolicyID(curPolicy,
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parentStoragePolicy), snapshot, isRawPath, inodesInPath);
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listingCnt++;
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if (needLocation) {
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// Once we hit lsLimit locations, stop.
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// This helps to prevent excessively large response payloads.
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// Approximate #locations with locatedBlockCount() * repl_factor
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LocatedBlocks blks =
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((HdfsLocatedFileStatus)listing[i]).getBlockLocations();
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locationBudget -= (blks == null) ? 0 :
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blks.locatedBlockCount() * listing[i].getReplication();
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}
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}
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// truncate return array if necessary
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if (listingCnt < numOfListing) {
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listing = Arrays.copyOf(listing, listingCnt);
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}
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return new DirectoryListing(
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listing, totalNumChildren-startChild-listingCnt);
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} finally {
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fsd.readUnlock();
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}
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}
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/**
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* Get a listing of all the snapshots of a snapshottable directory
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*/
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private static DirectoryListing getSnapshotsListing(
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FSDirectory fsd, String src, byte[] startAfter)
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throws IOException {
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Preconditions.checkState(fsd.hasReadLock());
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Preconditions.checkArgument(
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src.endsWith(HdfsConstants.SEPARATOR_DOT_SNAPSHOT_DIR),
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"%s does not end with %s", src, HdfsConstants.SEPARATOR_DOT_SNAPSHOT_DIR);
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final String dirPath = FSDirectory.normalizePath(src.substring(0,
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src.length() - HdfsConstants.DOT_SNAPSHOT_DIR.length()));
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final INode node = fsd.getINode(dirPath);
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final INodeDirectory dirNode = INodeDirectory.valueOf(node, dirPath);
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final DirectorySnapshottableFeature sf = dirNode.getDirectorySnapshottableFeature();
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if (sf == null) {
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throw new SnapshotException(
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"Directory is not a snapshottable directory: " + dirPath);
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}
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final ReadOnlyList<Snapshot> snapshots = sf.getSnapshotList();
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int skipSize = ReadOnlyList.Util.binarySearch(snapshots, startAfter);
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skipSize = skipSize < 0 ? -skipSize - 1 : skipSize + 1;
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int numOfListing = Math.min(snapshots.size() - skipSize, fsd.getLsLimit());
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final HdfsFileStatus listing[] = new HdfsFileStatus[numOfListing];
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for (int i = 0; i < numOfListing; i++) {
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Snapshot.Root sRoot = snapshots.get(i + skipSize).getRoot();
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listing[i] = createFileStatus(fsd, sRoot.getLocalNameBytes(), sRoot,
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BlockStoragePolicySuite.ID_UNSPECIFIED, Snapshot.CURRENT_STATE_ID,
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false, null);
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}
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return new DirectoryListing(
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listing, snapshots.size() - skipSize - numOfListing);
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}
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/** Get the file info for a specific file.
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* @param fsd FSDirectory
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* @param src The string representation of the path to the file
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* @param resolveLink whether to throw UnresolvedLinkException
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* @param isRawPath true if a /.reserved/raw pathname was passed by the user
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* @param includeStoragePolicy whether to include storage policy
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* @return object containing information regarding the file
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* or null if file not found
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*/
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static HdfsFileStatus getFileInfo(
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FSDirectory fsd, String src, boolean resolveLink, boolean isRawPath,
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boolean includeStoragePolicy)
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throws IOException {
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String srcs = FSDirectory.normalizePath(src);
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fsd.readLock();
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try {
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if (srcs.endsWith(HdfsConstants.SEPARATOR_DOT_SNAPSHOT_DIR)) {
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return getFileInfo4DotSnapshot(fsd, srcs);
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}
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final INodesInPath inodesInPath = fsd.getINodesInPath(srcs, resolveLink);
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final INode[] inodes = inodesInPath.getINodes();
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final INode i = inodes[inodes.length - 1];
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byte policyId = includeStoragePolicy && i != null && !i.isSymlink() ?
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i.getStoragePolicyID() : BlockStoragePolicySuite.ID_UNSPECIFIED;
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return i == null ? null : createFileStatus(fsd,
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HdfsFileStatus.EMPTY_NAME, i, policyId,
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inodesInPath.getPathSnapshotId(), isRawPath, inodesInPath);
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} finally {
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fsd.readUnlock();
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}
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}
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/**
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* Currently we only support "ls /xxx/.snapshot" which will return all the
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* snapshots of a directory. The FSCommand Ls will first call getFileInfo to
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* make sure the file/directory exists (before the real getListing call).
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* Since we do not have a real INode for ".snapshot", we return an empty
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* non-null HdfsFileStatus here.
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*/
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private static HdfsFileStatus getFileInfo4DotSnapshot(
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FSDirectory fsd, String src)
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throws UnresolvedLinkException {
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if (fsd.getINode4DotSnapshot(src) != null) {
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return new HdfsFileStatus(0, true, 0, 0, 0, 0, null, null, null, null,
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HdfsFileStatus.EMPTY_NAME, -1L, 0, null,
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BlockStoragePolicySuite.ID_UNSPECIFIED);
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}
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return null;
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}
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/**
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* create an hdfs file status from an inode
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*
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* @param fsd FSDirectory
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* @param path the local name
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* @param node inode
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* @param needLocation if block locations need to be included or not
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* @param isRawPath true if this is being called on behalf of a path in
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* /.reserved/raw
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* @return a file status
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* @throws java.io.IOException if any error occurs
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*/
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static HdfsFileStatus createFileStatus(
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FSDirectory fsd, byte[] path, INode node, boolean needLocation,
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byte storagePolicy, int snapshot, boolean isRawPath, INodesInPath iip)
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throws IOException {
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if (needLocation) {
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return createLocatedFileStatus(fsd, path, node, storagePolicy,
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snapshot, isRawPath, iip);
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} else {
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return createFileStatus(fsd, path, node, storagePolicy, snapshot,
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isRawPath, iip);
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}
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}
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/**
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* Create FileStatus by file INode
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*/
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static HdfsFileStatus createFileStatus(
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FSDirectory fsd, byte[] path, INode node, byte storagePolicy,
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int snapshot, boolean isRawPath, INodesInPath iip) throws IOException {
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long size = 0; // length is zero for directories
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short replication = 0;
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long blocksize = 0;
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final boolean isEncrypted;
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final FileEncryptionInfo feInfo = isRawPath ? null :
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fsd.getFileEncryptionInfo(node, snapshot, iip);
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if (node.isFile()) {
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final INodeFile fileNode = node.asFile();
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size = fileNode.computeFileSize(snapshot);
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replication = fileNode.getFileReplication(snapshot);
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blocksize = fileNode.getPreferredBlockSize();
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isEncrypted = (feInfo != null) ||
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(isRawPath && fsd.isInAnEZ(INodesInPath.fromINode(node)));
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} else {
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isEncrypted = fsd.isInAnEZ(INodesInPath.fromINode(node));
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}
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int childrenNum = node.isDirectory() ?
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node.asDirectory().getChildrenNum(snapshot) : 0;
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return new HdfsFileStatus(
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size,
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node.isDirectory(),
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replication,
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blocksize,
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node.getModificationTime(snapshot),
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node.getAccessTime(snapshot),
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getPermissionForFileStatus(node, snapshot, isEncrypted),
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node.getUserName(snapshot),
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node.getGroupName(snapshot),
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node.isSymlink() ? node.asSymlink().getSymlink() : null,
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path,
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node.getId(),
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childrenNum,
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feInfo,
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storagePolicy);
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}
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/**
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* Create FileStatus with location info by file INode
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*/
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private static HdfsLocatedFileStatus createLocatedFileStatus(
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FSDirectory fsd, byte[] path, INode node, byte storagePolicy,
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int snapshot, boolean isRawPath, INodesInPath iip) throws IOException {
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assert fsd.hasReadLock();
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long size = 0; // length is zero for directories
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short replication = 0;
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long blocksize = 0;
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LocatedBlocks loc = null;
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final boolean isEncrypted;
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final FileEncryptionInfo feInfo = isRawPath ? null :
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fsd.getFileEncryptionInfo(node, snapshot, iip);
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if (node.isFile()) {
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final INodeFile fileNode = node.asFile();
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size = fileNode.computeFileSize(snapshot);
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replication = fileNode.getFileReplication(snapshot);
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blocksize = fileNode.getPreferredBlockSize();
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final boolean inSnapshot = snapshot != Snapshot.CURRENT_STATE_ID;
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final boolean isUc = !inSnapshot && fileNode.isUnderConstruction();
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final long fileSize = !inSnapshot && isUc ?
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fileNode.computeFileSizeNotIncludingLastUcBlock() : size;
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loc = fsd.getFSNamesystem().getBlockManager().createLocatedBlocks(
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fileNode.getBlocks(), fileSize, isUc, 0L, size, false,
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inSnapshot, feInfo);
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if (loc == null) {
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loc = new LocatedBlocks();
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}
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isEncrypted = (feInfo != null) ||
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(isRawPath && fsd.isInAnEZ(INodesInPath.fromINode(node)));
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} else {
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isEncrypted = fsd.isInAnEZ(INodesInPath.fromINode(node));
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}
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int childrenNum = node.isDirectory() ?
|
||||
node.asDirectory().getChildrenNum(snapshot) : 0;
|
||||
|
||||
HdfsLocatedFileStatus status =
|
||||
new HdfsLocatedFileStatus(size, node.isDirectory(), replication,
|
||||
blocksize, node.getModificationTime(snapshot),
|
||||
node.getAccessTime(snapshot),
|
||||
getPermissionForFileStatus(node, snapshot, isEncrypted),
|
||||
node.getUserName(snapshot), node.getGroupName(snapshot),
|
||||
node.isSymlink() ? node.asSymlink().getSymlink() : null, path,
|
||||
node.getId(), loc, childrenNum, feInfo, storagePolicy);
|
||||
// Set caching information for the located blocks.
|
||||
if (loc != null) {
|
||||
CacheManager cacheManager = fsd.getFSNamesystem().getCacheManager();
|
||||
for (LocatedBlock lb: loc.getLocatedBlocks()) {
|
||||
cacheManager.setCachedLocations(lb);
|
||||
}
|
||||
}
|
||||
return status;
|
||||
}
|
||||
|
||||
/**
|
||||
* Returns an inode's FsPermission for use in an outbound FileStatus. If the
|
||||
* inode has an ACL or is for an encrypted file/dir, then this method will
|
||||
* return an FsPermissionExtension.
|
||||
*
|
||||
* @param node INode to check
|
||||
* @param snapshot int snapshot ID
|
||||
* @param isEncrypted boolean true if the file/dir is encrypted
|
||||
* @return FsPermission from inode, with ACL bit on if the inode has an ACL
|
||||
* and encrypted bit on if it represents an encrypted file/dir.
|
||||
*/
|
||||
private static FsPermission getPermissionForFileStatus(
|
||||
INode node, int snapshot, boolean isEncrypted) {
|
||||
FsPermission perm = node.getFsPermission(snapshot);
|
||||
boolean hasAcl = node.getAclFeature(snapshot) != null;
|
||||
if (hasAcl || isEncrypted) {
|
||||
perm = new FsPermissionExtension(perm, hasAcl, isEncrypted);
|
||||
}
|
||||
return perm;
|
||||
}
|
||||
|
||||
private static ContentSummary getContentSummaryInt(
|
||||
FSDirectory fsd, String src) throws IOException {
|
||||
String srcs = FSDirectory.normalizePath(src);
|
||||
fsd.readLock();
|
||||
try {
|
||||
INode targetNode = fsd.getNode(srcs, false);
|
||||
if (targetNode == null) {
|
||||
throw new FileNotFoundException("File does not exist: " + srcs);
|
||||
}
|
||||
else {
|
||||
// Make it relinquish locks everytime contentCountLimit entries are
|
||||
// processed. 0 means disabled. I.e. blocking for the entire duration.
|
||||
ContentSummaryComputationContext cscc =
|
||||
new ContentSummaryComputationContext(fsd, fsd.getFSNamesystem(),
|
||||
fsd.getContentCountLimit());
|
||||
ContentSummary cs = targetNode.computeAndConvertContentSummary(cscc);
|
||||
fsd.addYieldCount(cscc.getYieldCount());
|
||||
return cs;
|
||||
}
|
||||
} finally {
|
||||
fsd.readUnlock();
|
||||
}
|
||||
}
|
||||
}
|
||||
|
|
@ -63,16 +63,11 @@
|
|||
import org.apache.hadoop.hdfs.protocol.Block;
|
||||
import org.apache.hadoop.hdfs.protocol.BlockStoragePolicy;
|
||||
import org.apache.hadoop.hdfs.protocol.ClientProtocol;
|
||||
import org.apache.hadoop.hdfs.protocol.DirectoryListing;
|
||||
import org.apache.hadoop.hdfs.protocol.EncryptionZone;
|
||||
import org.apache.hadoop.hdfs.protocol.FSLimitException.MaxDirectoryItemsExceededException;
|
||||
import org.apache.hadoop.hdfs.protocol.FSLimitException.PathComponentTooLongException;
|
||||
import org.apache.hadoop.hdfs.protocol.FsPermissionExtension;
|
||||
import org.apache.hadoop.hdfs.protocol.HdfsConstants;
|
||||
import org.apache.hadoop.hdfs.protocol.HdfsFileStatus;
|
||||
import org.apache.hadoop.hdfs.protocol.HdfsLocatedFileStatus;
|
||||
import org.apache.hadoop.hdfs.protocol.LocatedBlock;
|
||||
import org.apache.hadoop.hdfs.protocol.LocatedBlocks;
|
||||
import org.apache.hadoop.hdfs.protocol.QuotaExceededException;
|
||||
import org.apache.hadoop.hdfs.protocol.SnapshotAccessControlException;
|
||||
import org.apache.hadoop.hdfs.protocol.SnapshotException;
|
||||
|
|
@ -86,16 +81,14 @@
|
|||
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.DirectorySnapshottableFeature;
|
||||
import org.apache.hadoop.hdfs.server.namenode.snapshot.Snapshot;
|
||||
import org.apache.hadoop.hdfs.server.namenode.snapshot.Snapshot.Root;
|
||||
import org.apache.hadoop.hdfs.util.ByteArray;
|
||||
import org.apache.hadoop.hdfs.util.ChunkedArrayList;
|
||||
import org.apache.hadoop.hdfs.util.ReadOnlyList;
|
||||
|
||||
import com.google.common.annotations.VisibleForTesting;
|
||||
import com.google.common.base.Preconditions;
|
||||
import com.google.common.collect.Lists;
|
||||
import org.apache.hadoop.hdfs.util.ReadOnlyList;
|
||||
import org.apache.hadoop.security.AccessControlException;
|
||||
import org.apache.hadoop.security.UserGroupInformation;
|
||||
import org.slf4j.Logger;
|
||||
|
|
@ -259,7 +252,7 @@ public int getWriteHoldCount() {
|
|||
ezManager = new EncryptionZoneManager(this, conf);
|
||||
}
|
||||
|
||||
private FSNamesystem getFSNamesystem() {
|
||||
FSNamesystem getFSNamesystem() {
|
||||
return namesystem;
|
||||
}
|
||||
|
||||
|
|
@ -276,6 +269,14 @@ boolean isPermissionEnabled() {
|
|||
return isPermissionEnabled;
|
||||
}
|
||||
|
||||
int getLsLimit() {
|
||||
return lsLimit;
|
||||
}
|
||||
|
||||
int getContentCountLimit() {
|
||||
return contentCountLimit;
|
||||
}
|
||||
|
||||
FSEditLog getEditLog() {
|
||||
return editLog;
|
||||
}
|
||||
|
|
@ -1343,172 +1344,12 @@ long unprotectedDelete(INodesInPath iip, BlocksMapUpdateInfo collectedBlocks,
|
|||
return removed;
|
||||
}
|
||||
|
||||
private byte getStoragePolicyID(byte inodePolicy, byte parentPolicy) {
|
||||
byte getStoragePolicyID(byte inodePolicy, byte parentPolicy) {
|
||||
return inodePolicy != BlockStoragePolicySuite.ID_UNSPECIFIED ? inodePolicy :
|
||||
parentPolicy;
|
||||
}
|
||||
|
||||
/**
|
||||
* Get a partial listing of the indicated directory
|
||||
*
|
||||
* We will stop when any of the following conditions is met:
|
||||
* 1) this.lsLimit files have been added
|
||||
* 2) needLocation is true AND enough files have been added such
|
||||
* that at least this.lsLimit block locations are in the response
|
||||
*
|
||||
* @param src the directory name
|
||||
* @param startAfter the name to start listing after
|
||||
* @param needLocation if block locations are returned
|
||||
* @return a partial listing starting after startAfter
|
||||
*/
|
||||
DirectoryListing getListing(String src, byte[] startAfter,
|
||||
boolean needLocation, boolean isSuperUser)
|
||||
throws UnresolvedLinkException, IOException {
|
||||
String srcs = normalizePath(src);
|
||||
final boolean isRawPath = isReservedRawName(src);
|
||||
|
||||
readLock();
|
||||
try {
|
||||
if (srcs.endsWith(HdfsConstants.SEPARATOR_DOT_SNAPSHOT_DIR)) {
|
||||
return getSnapshotsListing(srcs, startAfter);
|
||||
}
|
||||
final INodesInPath inodesInPath = getINodesInPath(srcs, true);
|
||||
final INode[] inodes = inodesInPath.getINodes();
|
||||
final int snapshot = inodesInPath.getPathSnapshotId();
|
||||
final INode targetNode = inodes[inodes.length - 1];
|
||||
if (targetNode == null)
|
||||
return null;
|
||||
byte parentStoragePolicy = isSuperUser ?
|
||||
targetNode.getStoragePolicyID() : BlockStoragePolicySuite.ID_UNSPECIFIED;
|
||||
|
||||
if (!targetNode.isDirectory()) {
|
||||
return new DirectoryListing(
|
||||
new HdfsFileStatus[]{createFileStatus(HdfsFileStatus.EMPTY_NAME,
|
||||
targetNode, needLocation, parentStoragePolicy, snapshot,
|
||||
isRawPath, inodesInPath)}, 0);
|
||||
}
|
||||
|
||||
final INodeDirectory dirInode = targetNode.asDirectory();
|
||||
final ReadOnlyList<INode> contents = dirInode.getChildrenList(snapshot);
|
||||
int startChild = INodeDirectory.nextChild(contents, startAfter);
|
||||
int totalNumChildren = contents.size();
|
||||
int numOfListing = Math.min(totalNumChildren-startChild, this.lsLimit);
|
||||
int locationBudget = this.lsLimit;
|
||||
int listingCnt = 0;
|
||||
HdfsFileStatus listing[] = new HdfsFileStatus[numOfListing];
|
||||
for (int i=0; i<numOfListing && locationBudget>0; i++) {
|
||||
INode cur = contents.get(startChild+i);
|
||||
byte curPolicy = isSuperUser && !cur.isSymlink()?
|
||||
cur.getLocalStoragePolicyID():
|
||||
BlockStoragePolicySuite.ID_UNSPECIFIED;
|
||||
listing[i] = createFileStatus(cur.getLocalNameBytes(), cur, needLocation,
|
||||
getStoragePolicyID(curPolicy, parentStoragePolicy), snapshot,
|
||||
isRawPath, inodesInPath);
|
||||
listingCnt++;
|
||||
if (needLocation) {
|
||||
// Once we hit lsLimit locations, stop.
|
||||
// This helps to prevent excessively large response payloads.
|
||||
// Approximate #locations with locatedBlockCount() * repl_factor
|
||||
LocatedBlocks blks =
|
||||
((HdfsLocatedFileStatus)listing[i]).getBlockLocations();
|
||||
locationBudget -= (blks == null) ? 0 :
|
||||
blks.locatedBlockCount() * listing[i].getReplication();
|
||||
}
|
||||
}
|
||||
// truncate return array if necessary
|
||||
if (listingCnt < numOfListing) {
|
||||
listing = Arrays.copyOf(listing, listingCnt);
|
||||
}
|
||||
return new DirectoryListing(
|
||||
listing, totalNumChildren-startChild-listingCnt);
|
||||
} finally {
|
||||
readUnlock();
|
||||
}
|
||||
}
|
||||
|
||||
/**
|
||||
* Get a listing of all the snapshots of a snapshottable directory
|
||||
*/
|
||||
private DirectoryListing getSnapshotsListing(String src, byte[] startAfter)
|
||||
throws UnresolvedLinkException, IOException {
|
||||
Preconditions.checkState(hasReadLock());
|
||||
Preconditions.checkArgument(
|
||||
src.endsWith(HdfsConstants.SEPARATOR_DOT_SNAPSHOT_DIR),
|
||||
"%s does not end with %s", src, HdfsConstants.SEPARATOR_DOT_SNAPSHOT_DIR);
|
||||
|
||||
final String dirPath = normalizePath(src.substring(0,
|
||||
src.length() - HdfsConstants.DOT_SNAPSHOT_DIR.length()));
|
||||
|
||||
final INode node = this.getINode(dirPath);
|
||||
final INodeDirectory dirNode = INodeDirectory.valueOf(node, dirPath);
|
||||
final DirectorySnapshottableFeature sf = dirNode.getDirectorySnapshottableFeature();
|
||||
if (sf == null) {
|
||||
throw new SnapshotException(
|
||||
"Directory is not a snapshottable directory: " + dirPath);
|
||||
}
|
||||
final ReadOnlyList<Snapshot> snapshots = sf.getSnapshotList();
|
||||
int skipSize = ReadOnlyList.Util.binarySearch(snapshots, startAfter);
|
||||
skipSize = skipSize < 0 ? -skipSize - 1 : skipSize + 1;
|
||||
int numOfListing = Math.min(snapshots.size() - skipSize, this.lsLimit);
|
||||
final HdfsFileStatus listing[] = new HdfsFileStatus[numOfListing];
|
||||
for (int i = 0; i < numOfListing; i++) {
|
||||
Root sRoot = snapshots.get(i + skipSize).getRoot();
|
||||
listing[i] = createFileStatus(sRoot.getLocalNameBytes(), sRoot,
|
||||
BlockStoragePolicySuite.ID_UNSPECIFIED, Snapshot.CURRENT_STATE_ID,
|
||||
false, null);
|
||||
}
|
||||
return new DirectoryListing(
|
||||
listing, snapshots.size() - skipSize - numOfListing);
|
||||
}
|
||||
|
||||
/** Get the file info for a specific file.
|
||||
* @param src The string representation of the path to the file
|
||||
* @param resolveLink whether to throw UnresolvedLinkException
|
||||
* @param isRawPath true if a /.reserved/raw pathname was passed by the user
|
||||
* @param includeStoragePolicy whether to include storage policy
|
||||
* @return object containing information regarding the file
|
||||
* or null if file not found
|
||||
*/
|
||||
HdfsFileStatus getFileInfo(String src, boolean resolveLink,
|
||||
boolean isRawPath, boolean includeStoragePolicy)
|
||||
throws IOException {
|
||||
String srcs = normalizePath(src);
|
||||
readLock();
|
||||
try {
|
||||
if (srcs.endsWith(HdfsConstants.SEPARATOR_DOT_SNAPSHOT_DIR)) {
|
||||
return getFileInfo4DotSnapshot(srcs);
|
||||
}
|
||||
final INodesInPath inodesInPath = getINodesInPath(srcs, resolveLink);
|
||||
final INode[] inodes = inodesInPath.getINodes();
|
||||
final INode i = inodes[inodes.length - 1];
|
||||
byte policyId = includeStoragePolicy && i != null && !i.isSymlink() ?
|
||||
i.getStoragePolicyID() : BlockStoragePolicySuite.ID_UNSPECIFIED;
|
||||
return i == null ? null : createFileStatus(HdfsFileStatus.EMPTY_NAME, i,
|
||||
policyId, inodesInPath.getPathSnapshotId(), isRawPath,
|
||||
inodesInPath);
|
||||
} finally {
|
||||
readUnlock();
|
||||
}
|
||||
}
|
||||
|
||||
/**
|
||||
* Currently we only support "ls /xxx/.snapshot" which will return all the
|
||||
* snapshots of a directory. The FSCommand Ls will first call getFileInfo to
|
||||
* make sure the file/directory exists (before the real getListing call).
|
||||
* Since we do not have a real INode for ".snapshot", we return an empty
|
||||
* non-null HdfsFileStatus here.
|
||||
*/
|
||||
private HdfsFileStatus getFileInfo4DotSnapshot(String src)
|
||||
throws UnresolvedLinkException {
|
||||
if (getINode4DotSnapshot(src) != null) {
|
||||
return new HdfsFileStatus(0, true, 0, 0, 0, 0, null, null, null, null,
|
||||
HdfsFileStatus.EMPTY_NAME, -1L, 0, null,
|
||||
BlockStoragePolicySuite.ID_UNSPECIFIED);
|
||||
}
|
||||
return null;
|
||||
}
|
||||
|
||||
private INode getINode4DotSnapshot(String src) throws UnresolvedLinkException {
|
||||
INode getINode4DotSnapshot(String src) throws UnresolvedLinkException {
|
||||
Preconditions.checkArgument(
|
||||
src.endsWith(HdfsConstants.SEPARATOR_DOT_SNAPSHOT_DIR),
|
||||
"%s does not end with %s", src, HdfsConstants.SEPARATOR_DOT_SNAPSHOT_DIR);
|
||||
|
|
@ -2090,36 +1931,15 @@ static String normalizePath(String src) {
|
|||
return src;
|
||||
}
|
||||
|
||||
ContentSummary getContentSummary(String src)
|
||||
throws FileNotFoundException, UnresolvedLinkException {
|
||||
String srcs = normalizePath(src);
|
||||
readLock();
|
||||
try {
|
||||
INode targetNode = getNode(srcs, false);
|
||||
if (targetNode == null) {
|
||||
throw new FileNotFoundException("File does not exist: " + srcs);
|
||||
}
|
||||
else {
|
||||
// Make it relinquish locks everytime contentCountLimit entries are
|
||||
// processed. 0 means disabled. I.e. blocking for the entire duration.
|
||||
ContentSummaryComputationContext cscc =
|
||||
|
||||
new ContentSummaryComputationContext(this, getFSNamesystem(),
|
||||
contentCountLimit);
|
||||
ContentSummary cs = targetNode.computeAndConvertContentSummary(cscc);
|
||||
yieldCount += cscc.getYieldCount();
|
||||
return cs;
|
||||
}
|
||||
} finally {
|
||||
readUnlock();
|
||||
}
|
||||
}
|
||||
|
||||
@VisibleForTesting
|
||||
public long getYieldCount() {
|
||||
return yieldCount;
|
||||
}
|
||||
|
||||
void addYieldCount(long value) {
|
||||
yieldCount += value;
|
||||
}
|
||||
|
||||
public INodeMap getINodeMap() {
|
||||
return inodeMap;
|
||||
}
|
||||
|
|
@ -2328,153 +2148,6 @@ void reset() {
|
|||
}
|
||||
}
|
||||
|
||||
/**
|
||||
* create an hdfs file status from an inode
|
||||
*
|
||||
* @param path the local name
|
||||
* @param node inode
|
||||
* @param needLocation if block locations need to be included or not
|
||||
* @param isRawPath true if this is being called on behalf of a path in
|
||||
* /.reserved/raw
|
||||
* @return a file status
|
||||
* @throws IOException if any error occurs
|
||||
*/
|
||||
private HdfsFileStatus createFileStatus(byte[] path, INode node,
|
||||
boolean needLocation, byte storagePolicy, int snapshot,
|
||||
boolean isRawPath, INodesInPath iip)
|
||||
throws IOException {
|
||||
if (needLocation) {
|
||||
return createLocatedFileStatus(path, node, storagePolicy, snapshot,
|
||||
isRawPath, iip);
|
||||
} else {
|
||||
return createFileStatus(path, node, storagePolicy, snapshot,
|
||||
isRawPath, iip);
|
||||
}
|
||||
}
|
||||
|
||||
/**
|
||||
* Create FileStatus by file INode
|
||||
*/
|
||||
HdfsFileStatus createFileStatus(byte[] path, INode node, byte storagePolicy,
|
||||
int snapshot, boolean isRawPath, INodesInPath iip) throws IOException {
|
||||
long size = 0; // length is zero for directories
|
||||
short replication = 0;
|
||||
long blocksize = 0;
|
||||
final boolean isEncrypted;
|
||||
|
||||
final FileEncryptionInfo feInfo = isRawPath ? null :
|
||||
getFileEncryptionInfo(node, snapshot, iip);
|
||||
|
||||
if (node.isFile()) {
|
||||
final INodeFile fileNode = node.asFile();
|
||||
size = fileNode.computeFileSize(snapshot);
|
||||
replication = fileNode.getFileReplication(snapshot);
|
||||
blocksize = fileNode.getPreferredBlockSize();
|
||||
isEncrypted = (feInfo != null) ||
|
||||
(isRawPath && isInAnEZ(INodesInPath.fromINode(node)));
|
||||
} else {
|
||||
isEncrypted = isInAnEZ(INodesInPath.fromINode(node));
|
||||
}
|
||||
|
||||
int childrenNum = node.isDirectory() ?
|
||||
node.asDirectory().getChildrenNum(snapshot) : 0;
|
||||
|
||||
return new HdfsFileStatus(
|
||||
size,
|
||||
node.isDirectory(),
|
||||
replication,
|
||||
blocksize,
|
||||
node.getModificationTime(snapshot),
|
||||
node.getAccessTime(snapshot),
|
||||
getPermissionForFileStatus(node, snapshot, isEncrypted),
|
||||
node.getUserName(snapshot),
|
||||
node.getGroupName(snapshot),
|
||||
node.isSymlink() ? node.asSymlink().getSymlink() : null,
|
||||
path,
|
||||
node.getId(),
|
||||
childrenNum,
|
||||
feInfo,
|
||||
storagePolicy);
|
||||
}
|
||||
|
||||
/**
|
||||
* Create FileStatus with location info by file INode
|
||||
*/
|
||||
private HdfsLocatedFileStatus createLocatedFileStatus(byte[] path, INode node,
|
||||
byte storagePolicy, int snapshot, boolean isRawPath,
|
||||
INodesInPath iip) throws IOException {
|
||||
assert hasReadLock();
|
||||
long size = 0; // length is zero for directories
|
||||
short replication = 0;
|
||||
long blocksize = 0;
|
||||
LocatedBlocks loc = null;
|
||||
final boolean isEncrypted;
|
||||
final FileEncryptionInfo feInfo = isRawPath ? null :
|
||||
getFileEncryptionInfo(node, snapshot, iip);
|
||||
if (node.isFile()) {
|
||||
final INodeFile fileNode = node.asFile();
|
||||
size = fileNode.computeFileSize(snapshot);
|
||||
replication = fileNode.getFileReplication(snapshot);
|
||||
blocksize = fileNode.getPreferredBlockSize();
|
||||
|
||||
final boolean inSnapshot = snapshot != Snapshot.CURRENT_STATE_ID;
|
||||
final boolean isUc = !inSnapshot && fileNode.isUnderConstruction();
|
||||
final long fileSize = !inSnapshot && isUc ?
|
||||
fileNode.computeFileSizeNotIncludingLastUcBlock() : size;
|
||||
|
||||
loc = getFSNamesystem().getBlockManager().createLocatedBlocks(
|
||||
fileNode.getBlocks(), fileSize, isUc, 0L, size, false,
|
||||
inSnapshot, feInfo);
|
||||
if (loc == null) {
|
||||
loc = new LocatedBlocks();
|
||||
}
|
||||
isEncrypted = (feInfo != null) ||
|
||||
(isRawPath && isInAnEZ(INodesInPath.fromINode(node)));
|
||||
} else {
|
||||
isEncrypted = isInAnEZ(INodesInPath.fromINode(node));
|
||||
}
|
||||
int childrenNum = node.isDirectory() ?
|
||||
node.asDirectory().getChildrenNum(snapshot) : 0;
|
||||
|
||||
HdfsLocatedFileStatus status =
|
||||
new HdfsLocatedFileStatus(size, node.isDirectory(), replication,
|
||||
blocksize, node.getModificationTime(snapshot),
|
||||
node.getAccessTime(snapshot),
|
||||
getPermissionForFileStatus(node, snapshot, isEncrypted),
|
||||
node.getUserName(snapshot), node.getGroupName(snapshot),
|
||||
node.isSymlink() ? node.asSymlink().getSymlink() : null, path,
|
||||
node.getId(), loc, childrenNum, feInfo, storagePolicy);
|
||||
// Set caching information for the located blocks.
|
||||
if (loc != null) {
|
||||
CacheManager cacheManager = namesystem.getCacheManager();
|
||||
for (LocatedBlock lb: loc.getLocatedBlocks()) {
|
||||
cacheManager.setCachedLocations(lb);
|
||||
}
|
||||
}
|
||||
return status;
|
||||
}
|
||||
|
||||
/**
|
||||
* Returns an inode's FsPermission for use in an outbound FileStatus. If the
|
||||
* inode has an ACL or is for an encrypted file/dir, then this method will
|
||||
* return an FsPermissionExtension.
|
||||
*
|
||||
* @param node INode to check
|
||||
* @param snapshot int snapshot ID
|
||||
* @param isEncrypted boolean true if the file/dir is encrypted
|
||||
* @return FsPermission from inode, with ACL bit on if the inode has an ACL
|
||||
* and encrypted bit on if it represents an encrypted file/dir.
|
||||
*/
|
||||
private static FsPermission getPermissionForFileStatus(INode node,
|
||||
int snapshot, boolean isEncrypted) {
|
||||
FsPermission perm = node.getFsPermission(snapshot);
|
||||
boolean hasAcl = node.getAclFeature(snapshot) != null;
|
||||
if (hasAcl || isEncrypted) {
|
||||
perm = new FsPermissionExtension(perm, hasAcl, isEncrypted);
|
||||
}
|
||||
return perm;
|
||||
}
|
||||
|
||||
/**
|
||||
* Add the specified path into the namespace.
|
||||
*/
|
||||
|
|
@ -3322,6 +2995,7 @@ void checkPermission(
|
|||
HdfsFileStatus getAuditFileInfo(String path, boolean resolveSymlink)
|
||||
throws IOException {
|
||||
return (namesystem.isAuditEnabled() && namesystem.isExternalInvocation())
|
||||
? getFileInfo(path, resolveSymlink, false, false) : null;
|
||||
? FSDirStatAndListingOp.getFileInfo(this, path, resolveSymlink, false,
|
||||
false) : null;
|
||||
}
|
||||
}
|
||||
|
|
|
|||
|
|
@ -372,8 +372,8 @@ private long applyEditLogOp(FSEditLogOp op, FSDirectory fsDir,
|
|||
|
||||
// add the op into retry cache if necessary
|
||||
if (toAddRetryCache) {
|
||||
HdfsFileStatus stat = fsNamesys.dir.createFileStatus(
|
||||
HdfsFileStatus.EMPTY_NAME, newFile,
|
||||
HdfsFileStatus stat = FSDirStatAndListingOp.createFileStatus(
|
||||
fsNamesys.dir, HdfsFileStatus.EMPTY_NAME, newFile,
|
||||
BlockStoragePolicySuite.ID_UNSPECIFIED, Snapshot.CURRENT_STATE_ID,
|
||||
false, iip);
|
||||
fsNamesys.addCacheEntryWithPayload(addCloseOp.rpcClientId,
|
||||
|
|
@ -393,7 +393,8 @@ private long applyEditLogOp(FSEditLogOp op, FSDirectory fsDir,
|
|||
|
||||
// add the op into retry cache is necessary
|
||||
if (toAddRetryCache) {
|
||||
HdfsFileStatus stat = fsNamesys.dir.createFileStatus(
|
||||
HdfsFileStatus stat = FSDirStatAndListingOp.createFileStatus(
|
||||
fsNamesys.dir,
|
||||
HdfsFileStatus.EMPTY_NAME, newFile,
|
||||
BlockStoragePolicySuite.ID_UNSPECIFIED,
|
||||
Snapshot.CURRENT_STATE_ID, false, iip);
|
||||
|
|
|
|||
|
|
@ -143,7 +143,6 @@
|
|||
import org.apache.hadoop.fs.CacheFlag;
|
||||
import org.apache.hadoop.fs.ContentSummary;
|
||||
import org.apache.hadoop.fs.CreateFlag;
|
||||
import org.apache.hadoop.fs.DirectoryListingStartAfterNotFoundException;
|
||||
import org.apache.hadoop.fs.FileAlreadyExistsException;
|
||||
import org.apache.hadoop.fs.FileEncryptionInfo;
|
||||
import org.apache.hadoop.fs.FileStatus;
|
||||
|
|
@ -2474,7 +2473,7 @@ private HdfsFileStatus startFileInt(final String srcArg,
|
|||
toRemoveBlocks = startFileInternal(pc, src, permissions, holder,
|
||||
clientMachine, create, overwrite, createParent, replication,
|
||||
blockSize, isLazyPersist, suite, protocolVersion, edek, logRetryCache);
|
||||
stat = dir.getFileInfo(src, false,
|
||||
stat = FSDirStatAndListingOp.getFileInfo(dir, src, false,
|
||||
FSDirectory.isReservedRawName(srcArg), true);
|
||||
} catch (StandbyException se) {
|
||||
skipSync = true;
|
||||
|
|
@ -2923,8 +2922,8 @@ private LastBlockWithStatus appendFileInt(final String srcArg, String holder,
|
|||
checkNameNodeSafeMode("Cannot append to file" + src);
|
||||
src = dir.resolvePath(pc, src, pathComponents);
|
||||
lb = appendFileInternal(pc, src, holder, clientMachine, logRetryCache);
|
||||
stat = dir.getFileInfo(src, false, FSDirectory.isReservedRawName(srcArg),
|
||||
true);
|
||||
stat = FSDirStatAndListingOp.getFileInfo(dir, src, false,
|
||||
FSDirectory.isReservedRawName(srcArg), true);
|
||||
} catch (StandbyException se) {
|
||||
skipSync = true;
|
||||
throw se;
|
||||
|
|
@ -3921,7 +3920,7 @@ private boolean isSafeModeTrackingBlocks() {
|
|||
* Get the file info for a specific file.
|
||||
*
|
||||
* @param srcArg The string representation of the path to the file
|
||||
* @param resolveLink whether to throw UnresolvedLinkException
|
||||
* @param resolveLink whether to throw UnresolvedLinkException
|
||||
* if src refers to a symlink
|
||||
*
|
||||
* @throws AccessControlException if access is denied
|
||||
|
|
@ -3929,63 +3928,37 @@ private boolean isSafeModeTrackingBlocks() {
|
|||
*
|
||||
* @return object containing information regarding the file
|
||||
* or null if file not found
|
||||
* @throws StandbyException
|
||||
* @throws StandbyException
|
||||
*/
|
||||
HdfsFileStatus getFileInfo(final String srcArg, boolean resolveLink)
|
||||
throws AccessControlException, UnresolvedLinkException,
|
||||
StandbyException, IOException {
|
||||
String src = srcArg;
|
||||
if (!DFSUtil.isValidName(src)) {
|
||||
throw new InvalidPathException("Invalid file name: " + src);
|
||||
}
|
||||
HdfsFileStatus stat = null;
|
||||
FSPermissionChecker pc = getPermissionChecker();
|
||||
HdfsFileStatus getFileInfo(final String src, boolean resolveLink)
|
||||
throws IOException {
|
||||
checkOperation(OperationCategory.READ);
|
||||
byte[][] pathComponents = FSDirectory.getPathComponentsForReservedPath(src);
|
||||
HdfsFileStatus stat = null;
|
||||
readLock();
|
||||
try {
|
||||
checkOperation(OperationCategory.READ);
|
||||
src = dir.resolvePath(pc, src, pathComponents);
|
||||
boolean isSuperUser = true;
|
||||
if (isPermissionEnabled) {
|
||||
checkPermission(pc, src, false, null, null, null, null, false,
|
||||
resolveLink);
|
||||
isSuperUser = pc.isSuperUser();
|
||||
}
|
||||
stat = dir.getFileInfo(src, resolveLink,
|
||||
FSDirectory.isReservedRawName(srcArg), isSuperUser);
|
||||
stat = FSDirStatAndListingOp.getFileInfo(dir, src, resolveLink);
|
||||
} catch (AccessControlException e) {
|
||||
logAuditEvent(false, "getfileinfo", srcArg);
|
||||
logAuditEvent(false, "getfileinfo", src);
|
||||
throw e;
|
||||
} finally {
|
||||
readUnlock();
|
||||
}
|
||||
logAuditEvent(true, "getfileinfo", srcArg);
|
||||
logAuditEvent(true, "getfileinfo", src);
|
||||
return stat;
|
||||
}
|
||||
|
||||
|
||||
/**
|
||||
* Returns true if the file is closed
|
||||
*/
|
||||
boolean isFileClosed(final String srcArg)
|
||||
throws AccessControlException, UnresolvedLinkException,
|
||||
StandbyException, IOException {
|
||||
String src = srcArg;
|
||||
FSPermissionChecker pc = getPermissionChecker();
|
||||
boolean isFileClosed(final String src) throws IOException {
|
||||
checkOperation(OperationCategory.READ);
|
||||
byte[][] pathComponents = FSDirectory.getPathComponentsForReservedPath(src);
|
||||
readLock();
|
||||
try {
|
||||
src = dir.resolvePath(pc, src, pathComponents);
|
||||
checkOperation(OperationCategory.READ);
|
||||
if (isPermissionEnabled) {
|
||||
checkTraverse(pc, src);
|
||||
}
|
||||
return !INodeFile.valueOf(dir.getINode(src), src).isUnderConstruction();
|
||||
return FSDirStatAndListingOp.isFileClosed(dir, src);
|
||||
} catch (AccessControlException e) {
|
||||
if (isAuditEnabled() && isExternalInvocation()) {
|
||||
logAuditEvent(false, "isFileClosed", srcArg);
|
||||
}
|
||||
logAuditEvent(false, "isFileClosed", src);
|
||||
throw e;
|
||||
} finally {
|
||||
readUnlock();
|
||||
|
|
@ -4182,7 +4155,7 @@ private boolean mkdirsRecursively(String src, PermissionStatus permissions,
|
|||
/**
|
||||
* Get the content summary for a specific file/dir.
|
||||
*
|
||||
* @param srcArg The string representation of the path to the file
|
||||
* @param src The string representation of the path to the file
|
||||
*
|
||||
* @throws AccessControlException if access is denied
|
||||
* @throws UnresolvedLinkException if a symlink is encountered.
|
||||
|
|
@ -4193,27 +4166,17 @@ private boolean mkdirsRecursively(String src, PermissionStatus permissions,
|
|||
* @return object containing information regarding the file
|
||||
* or null if file not found
|
||||
*/
|
||||
ContentSummary getContentSummary(final String srcArg) throws IOException {
|
||||
String src = srcArg;
|
||||
FSPermissionChecker pc = getPermissionChecker();
|
||||
checkOperation(OperationCategory.READ);
|
||||
byte[][] pathComponents = FSDirectory.getPathComponentsForReservedPath(src);
|
||||
ContentSummary getContentSummary(final String src) throws IOException {
|
||||
readLock();
|
||||
boolean success = true;
|
||||
try {
|
||||
checkOperation(OperationCategory.READ);
|
||||
src = dir.resolvePath(pc, src, pathComponents);
|
||||
if (isPermissionEnabled) {
|
||||
checkPermission(pc, src, false, null, null, null, FsAction.READ_EXECUTE);
|
||||
}
|
||||
return dir.getContentSummary(src);
|
||||
|
||||
return FSDirStatAndListingOp.getContentSummary(dir, src);
|
||||
} catch (AccessControlException ace) {
|
||||
success = false;
|
||||
throw ace;
|
||||
} finally {
|
||||
readUnlock();
|
||||
logAuditEvent(success, "contentSummary", srcArg);
|
||||
logAuditEvent(success, "contentSummary", src);
|
||||
}
|
||||
}
|
||||
|
||||
|
|
@ -4722,58 +4685,21 @@ void renewLease(String holder) throws IOException {
|
|||
*/
|
||||
DirectoryListing getListing(String src, byte[] startAfter,
|
||||
boolean needLocation)
|
||||
throws AccessControlException, UnresolvedLinkException, IOException {
|
||||
throws IOException {
|
||||
checkOperation(OperationCategory.READ);
|
||||
DirectoryListing dl = null;
|
||||
readLock();
|
||||
try {
|
||||
return getListingInt(src, startAfter, needLocation);
|
||||
checkOperation(NameNode.OperationCategory.READ);
|
||||
dl = FSDirStatAndListingOp.getListingInt(dir, src, startAfter,
|
||||
needLocation);
|
||||
} catch (AccessControlException e) {
|
||||
logAuditEvent(false, "listStatus", src);
|
||||
throw e;
|
||||
}
|
||||
}
|
||||
|
||||
private DirectoryListing getListingInt(final String srcArg, byte[] startAfter,
|
||||
boolean needLocation)
|
||||
throws AccessControlException, UnresolvedLinkException, IOException {
|
||||
String src = srcArg;
|
||||
DirectoryListing dl;
|
||||
FSPermissionChecker pc = getPermissionChecker();
|
||||
checkOperation(OperationCategory.READ);
|
||||
byte[][] pathComponents = FSDirectory.getPathComponentsForReservedPath(src);
|
||||
String startAfterString = new String(startAfter);
|
||||
readLock();
|
||||
try {
|
||||
checkOperation(OperationCategory.READ);
|
||||
src = dir.resolvePath(pc, src, pathComponents);
|
||||
|
||||
// Get file name when startAfter is an INodePath
|
||||
if (FSDirectory.isReservedName(startAfterString)) {
|
||||
byte[][] startAfterComponents = FSDirectory
|
||||
.getPathComponentsForReservedPath(startAfterString);
|
||||
try {
|
||||
String tmp = FSDirectory.resolvePath(src, startAfterComponents, dir);
|
||||
byte[][] regularPath = INode.getPathComponents(tmp);
|
||||
startAfter = regularPath[regularPath.length - 1];
|
||||
} catch (IOException e) {
|
||||
// Possibly the inode is deleted
|
||||
throw new DirectoryListingStartAfterNotFoundException(
|
||||
"Can't find startAfter " + startAfterString);
|
||||
}
|
||||
}
|
||||
|
||||
boolean isSuperUser = true;
|
||||
if (isPermissionEnabled) {
|
||||
if (dir.isDir(src)) {
|
||||
checkPathAccess(pc, src, FsAction.READ_EXECUTE);
|
||||
} else {
|
||||
checkTraverse(pc, src);
|
||||
}
|
||||
isSuperUser = pc.isSuperUser();
|
||||
}
|
||||
logAuditEvent(true, "listStatus", srcArg);
|
||||
dl = dir.getListing(src, startAfter, needLocation, isSuperUser);
|
||||
} finally {
|
||||
readUnlock();
|
||||
}
|
||||
logAuditEvent(true, "listStatus", src);
|
||||
return dl;
|
||||
}
|
||||
|
||||
|
|
|
|||
|
|
@ -70,7 +70,8 @@ public static LocatedBlocks getBlockLocations(NameNode namenode,
|
|||
public static HdfsFileStatus getFileInfo(NameNode namenode, String src,
|
||||
boolean resolveLink) throws AccessControlException, UnresolvedLinkException,
|
||||
StandbyException, IOException {
|
||||
return namenode.getNamesystem().getFileInfo(src, resolveLink);
|
||||
return FSDirStatAndListingOp.getFileInfo(namenode.getNamesystem()
|
||||
.getFSDirectory(), src, resolveLink);
|
||||
}
|
||||
|
||||
public static boolean mkdirs(NameNode namenode, String src,
|
||||
|
|
|
|||
Loading…
Reference in New Issue