HDFS-2246. Enable reading a block directly from local file system for a client on the same node as the block file. Contributed by Andrew Purtell, Suresh Srinivas and Jitendra Nath Pandey
git-svn-id: https://svn.apache.org/repos/asf/hadoop/common/trunk@1204792 13f79535-47bb-0310-9956-ffa450edef68
This commit is contained in:
Tsz-wo Sze
parent
a2e66776a9
commit
2ab10e29d9
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@ -161,6 +161,10 @@ Release 0.23.1 - UNRELEASED
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HDFS-2129. Simplify BlockReader to not inherit from FSInputChecker.
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(todd)
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HDFS-2246. Enable reading a block directly from local file system
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for a client on the same node as the block file. (Andrew Purtell,
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Suresh Srinivas and Jitendra Nath Pandey via szetszwo)
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BUG FIXES
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HDFS-2541. For a sufficiently large value of blocks, the DN Scanner
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@ -0,0 +1,380 @@
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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;
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import java.io.DataInputStream;
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import java.io.File;
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import java.io.FileInputStream;
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import java.io.IOException;
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import java.nio.ByteBuffer;
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import java.util.Collections;
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import java.util.HashMap;
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import java.util.LinkedHashMap;
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import java.util.Map;
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import org.apache.commons.logging.Log;
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import org.apache.commons.logging.LogFactory;
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import org.apache.hadoop.conf.Configuration;
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import org.apache.hadoop.hdfs.protocol.ExtendedBlock;
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import org.apache.hadoop.hdfs.protocol.BlockLocalPathInfo;
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import org.apache.hadoop.hdfs.protocol.ClientDatanodeProtocol;
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import org.apache.hadoop.hdfs.protocol.DatanodeInfo;
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import org.apache.hadoop.hdfs.security.token.block.BlockTokenIdentifier;
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import org.apache.hadoop.hdfs.server.datanode.BlockMetadataHeader;
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import org.apache.hadoop.hdfs.server.datanode.FSDataset;
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import org.apache.hadoop.ipc.RPC;
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import org.apache.hadoop.security.token.Token;
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import org.apache.hadoop.util.DataChecksum;
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/**
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* BlockReaderLocal enables local short circuited reads. If the DFS client is on
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* the same machine as the datanode, then the client can read files directly
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* from the local file system rather than going through the datanode for better
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* performance. <br>
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* {@link BlockReaderLocal} works as follows:
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* <ul>
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* <li>The client performing short circuit reads must be configured at the
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* datanode.</li>
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* <li>The client gets the path to the file where block is stored using
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* {@link org.apache.hadoop.hdfs.protocol.ClientDatanodeProtocol#getBlockLocalPathInfo(ExtendedBlock, Token)}
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* RPC call</li>
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* <li>Client uses kerberos authentication to connect to the datanode over RPC,
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* if security is enabled.</li>
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* </ul>
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*/
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class BlockReaderLocal extends RemoteBlockReader2 {
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public static final Log LOG = LogFactory.getLog(DFSClient.class);
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//Stores the cache and proxy for a local datanode.
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private static class LocalDatanodeInfo {
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private ClientDatanodeProtocol proxy = null;
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private final Map<ExtendedBlock, BlockLocalPathInfo> cache;
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LocalDatanodeInfo() {
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final int cacheSize = 10000;
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final float hashTableLoadFactor = 0.75f;
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int hashTableCapacity = (int) Math.ceil(cacheSize / hashTableLoadFactor) + 1;
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cache = Collections
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.synchronizedMap(new LinkedHashMap<ExtendedBlock, BlockLocalPathInfo>(
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hashTableCapacity, hashTableLoadFactor, true) {
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private static final long serialVersionUID = 1;
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@Override
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protected boolean removeEldestEntry(
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Map.Entry<ExtendedBlock, BlockLocalPathInfo> eldest) {
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return size() > cacheSize;
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}
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});
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}
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private synchronized ClientDatanodeProtocol getDatanodeProxy(
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DatanodeInfo node, Configuration conf, int socketTimeout)
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throws IOException {
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if (proxy == null) {
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proxy = DFSUtil.createClientDatanodeProtocolProxy(node, conf,
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socketTimeout);
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}
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return proxy;
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}
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private synchronized void resetDatanodeProxy() {
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if (null != proxy) {
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RPC.stopProxy(proxy);
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proxy = null;
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}
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}
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private BlockLocalPathInfo getBlockLocalPathInfo(ExtendedBlock b) {
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return cache.get(b);
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}
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private void setBlockLocalPathInfo(ExtendedBlock b, BlockLocalPathInfo info) {
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cache.put(b, info);
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}
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private void removeBlockLocalPathInfo(ExtendedBlock b) {
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cache.remove(b);
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}
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}
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// Multiple datanodes could be running on the local machine. Store proxies in
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// a map keyed by the ipc port of the datanode.
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private static Map<Integer, LocalDatanodeInfo> localDatanodeInfoMap = new HashMap<Integer, LocalDatanodeInfo>();
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private final FileInputStream dataIn; // reader for the data file
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private FileInputStream checksumIn; // reader for the checksum file
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private int offsetFromChunkBoundary;
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ByteBuffer dataBuff = null;
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ByteBuffer checksumBuff = null;
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/**
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* The only way this object can be instantiated.
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*/
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static BlockReaderLocal newBlockReader(Configuration conf, String file,
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ExtendedBlock blk, Token<BlockTokenIdentifier> token, DatanodeInfo node,
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int socketTimeout, long startOffset, long length) throws IOException {
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LocalDatanodeInfo localDatanodeInfo = getLocalDatanodeInfo(node
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.getIpcPort());
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// check the cache first
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BlockLocalPathInfo pathinfo = localDatanodeInfo.getBlockLocalPathInfo(blk);
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if (pathinfo == null) {
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pathinfo = getBlockPathInfo(blk, node, conf, socketTimeout, token);
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}
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// check to see if the file exists. It may so happen that the
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// HDFS file has been deleted and this block-lookup is occurring
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// on behalf of a new HDFS file. This time, the block file could
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// be residing in a different portion of the fs.data.dir directory.
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// In this case, we remove this entry from the cache. The next
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// call to this method will re-populate the cache.
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FileInputStream dataIn = null;
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FileInputStream checksumIn = null;
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BlockReaderLocal localBlockReader = null;
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boolean skipChecksumCheck = skipChecksumCheck(conf);
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try {
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// get a local file system
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File blkfile = new File(pathinfo.getBlockPath());
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dataIn = new FileInputStream(blkfile);
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if (LOG.isDebugEnabled()) {
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LOG.debug("New BlockReaderLocal for file " + blkfile + " of size "
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+ blkfile.length() + " startOffset " + startOffset + " length "
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+ length + " short circuit checksum " + skipChecksumCheck);
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}
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if (!skipChecksumCheck) {
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// get the metadata file
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File metafile = new File(pathinfo.getMetaPath());
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checksumIn = new FileInputStream(metafile);
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// read and handle the common header here. For now just a version
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BlockMetadataHeader header = BlockMetadataHeader
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.readHeader(new DataInputStream(checksumIn));
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short version = header.getVersion();
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if (version != FSDataset.METADATA_VERSION) {
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LOG.warn("Wrong version (" + version + ") for metadata file for "
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+ blk + " ignoring ...");
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}
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DataChecksum checksum = header.getChecksum();
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long firstChunkOffset = startOffset
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- (startOffset % checksum.getBytesPerChecksum());
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localBlockReader = new BlockReaderLocal(conf, file, blk, token,
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startOffset, length, pathinfo, checksum, true, dataIn,
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firstChunkOffset, checksumIn);
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} else {
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localBlockReader = new BlockReaderLocal(conf, file, blk, token,
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startOffset, length, pathinfo, dataIn);
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}
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} catch (IOException e) {
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// remove from cache
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localDatanodeInfo.removeBlockLocalPathInfo(blk);
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DFSClient.LOG.warn("BlockReaderLocal: Removing " + blk
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+ " from cache because local file " + pathinfo.getBlockPath()
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+ " could not be opened.");
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throw e;
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} finally {
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if (localBlockReader == null) {
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if (dataIn != null) {
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dataIn.close();
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}
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if (checksumIn != null) {
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checksumIn.close();
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}
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}
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}
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return localBlockReader;
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}
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private static synchronized LocalDatanodeInfo getLocalDatanodeInfo(int port) {
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LocalDatanodeInfo ldInfo = localDatanodeInfoMap.get(port);
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if (ldInfo == null) {
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ldInfo = new LocalDatanodeInfo();
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localDatanodeInfoMap.put(port, ldInfo);
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}
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return ldInfo;
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}
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private static BlockLocalPathInfo getBlockPathInfo(ExtendedBlock blk,
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DatanodeInfo node, Configuration conf, int timeout,
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Token<BlockTokenIdentifier> token) throws IOException {
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LocalDatanodeInfo localDatanodeInfo = getLocalDatanodeInfo(node.ipcPort);
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BlockLocalPathInfo pathinfo = null;
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ClientDatanodeProtocol proxy = localDatanodeInfo.getDatanodeProxy(node,
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conf, timeout);
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try {
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// make RPC to local datanode to find local pathnames of blocks
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pathinfo = proxy.getBlockLocalPathInfo(blk, token);
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if (pathinfo != null) {
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if (LOG.isDebugEnabled()) {
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LOG.debug("Cached location of block " + blk + " as " + pathinfo);
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}
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localDatanodeInfo.setBlockLocalPathInfo(blk, pathinfo);
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}
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} catch (IOException e) {
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localDatanodeInfo.resetDatanodeProxy(); // Reset proxy on error
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throw e;
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}
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return pathinfo;
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}
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private static boolean skipChecksumCheck(Configuration conf) {
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return conf.getBoolean(
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DFSConfigKeys.DFS_CLIENT_READ_SHORTCIRCUIT_SKIP_CHECKSUM_KEY,
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DFSConfigKeys.DFS_CLIENT_READ_SHORTCIRCUIT_SKIP_CHECKSUM_DEFAULT);
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}
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private BlockReaderLocal(Configuration conf, String hdfsfile,
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ExtendedBlock block, Token<BlockTokenIdentifier> token, long startOffset,
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long length, BlockLocalPathInfo pathinfo, FileInputStream dataIn)
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throws IOException {
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this(conf, hdfsfile, block, token, startOffset, length, pathinfo,
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DataChecksum.newDataChecksum(DataChecksum.CHECKSUM_NULL, 4), false,
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dataIn, startOffset, null);
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}
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private BlockReaderLocal(Configuration conf, String hdfsfile,
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ExtendedBlock block, Token<BlockTokenIdentifier> token, long startOffset,
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long length, BlockLocalPathInfo pathinfo, DataChecksum checksum,
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boolean verifyChecksum, FileInputStream dataIn, long firstChunkOffset,
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FileInputStream checksumIn) throws IOException {
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super(hdfsfile, block.getBlockPoolId(), block.getBlockId(), dataIn
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.getChannel(), checksum, verifyChecksum, startOffset, firstChunkOffset,
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length, null);
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this.dataIn = dataIn;
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this.checksumIn = checksumIn;
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this.offsetFromChunkBoundary = (int) (startOffset-firstChunkOffset);
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dataBuff = bufferPool.getBuffer(bytesPerChecksum*64);
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checksumBuff = bufferPool.getBuffer(checksumSize*64);
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//Initially the buffers have nothing to read.
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dataBuff.flip();
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checksumBuff.flip();
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long toSkip = firstChunkOffset;
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while (toSkip > 0) {
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long skipped = dataIn.skip(toSkip);
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if (skipped == 0) {
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throw new IOException("Couldn't initialize input stream");
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}
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toSkip -= skipped;
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}
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if (checksumIn != null) {
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long checkSumOffset = (firstChunkOffset / bytesPerChecksum)
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* checksumSize;
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while (checkSumOffset > 0) {
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long skipped = checksumIn.skip(checkSumOffset);
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if (skipped == 0) {
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throw new IOException("Couldn't initialize checksum input stream");
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}
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checkSumOffset -= skipped;
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}
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}
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}
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private int readIntoBuffer(FileInputStream stream, ByteBuffer buf)
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throws IOException {
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int bytesRead = stream.getChannel().read(buf);
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if (bytesRead < 0) {
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//EOF
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return bytesRead;
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}
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while (buf.remaining() > 0) {
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int n = stream.getChannel().read(buf);
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if (n < 0) {
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//EOF
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return bytesRead;
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}
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bytesRead += n;
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}
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return bytesRead;
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}
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@Override
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public synchronized int read(byte[] buf, int off, int len) throws IOException {
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if (LOG.isDebugEnabled()) {
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LOG.info("read off " + off + " len " + len);
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}
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if (!verifyChecksum) {
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return dataIn.read(buf, off, len);
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} else {
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int dataRead = -1;
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if (dataBuff.remaining() == 0) {
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dataBuff.clear();
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checksumBuff.clear();
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dataRead = readIntoBuffer(dataIn, dataBuff);
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readIntoBuffer(checksumIn, checksumBuff);
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checksumBuff.flip();
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dataBuff.flip();
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if (verifyChecksum) {
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checksum.verifyChunkedSums(dataBuff, checksumBuff, filename,
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this.startOffset);
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}
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} else {
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dataRead = dataBuff.remaining();
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}
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if (dataRead > 0) {
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int nRead = Math.min(dataRead - offsetFromChunkBoundary, len);
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if (offsetFromChunkBoundary > 0) {
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dataBuff.position(offsetFromChunkBoundary);
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// Its either end of file or dataRead is greater than the
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// offsetFromChunkBoundary
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offsetFromChunkBoundary = 0;
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}
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if (nRead > 0) {
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dataBuff.get(buf, off, nRead);
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return nRead;
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} else {
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return 0;
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}
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} else {
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return -1;
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}
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}
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}
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@Override
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public synchronized long skip(long n) throws IOException {
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if (LOG.isDebugEnabled()) {
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LOG.debug("skip " + n);
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}
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if (!verifyChecksum) {
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return dataIn.skip(n);
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} else {
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return super.skip(n);
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}
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}
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@Override
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public synchronized void close() throws IOException {
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dataIn.close();
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if (checksumIn != null) {
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checksumIn.close();
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}
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if (dataBuff != null) {
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bufferPool.returnBuffer(dataBuff);
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dataBuff = null;
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}
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if (checksumBuff != null) {
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bufferPool.returnBuffer(checksumBuff);
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checksumBuff = null;
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}
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super.close();
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}
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}
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@ -25,12 +25,18 @@ import java.io.DataOutputStream;
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import java.io.FileNotFoundException;
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import java.io.IOException;
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import java.io.OutputStream;
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import java.net.InetAddress;
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import java.net.InetSocketAddress;
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import java.net.NetworkInterface;
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import java.net.Socket;
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import java.net.SocketException;
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import java.util.Collections;
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import java.util.EnumSet;
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import java.util.HashMap;
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import java.util.HashSet;
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import java.util.List;
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import java.util.Map;
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import java.util.Set;
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import javax.net.SocketFactory;
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@ -78,6 +84,7 @@ import org.apache.hadoop.hdfs.protocol.datatransfer.Sender;
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import org.apache.hadoop.hdfs.protocol.proto.DataTransferProtos.BlockOpResponseProto;
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import org.apache.hadoop.hdfs.protocol.proto.DataTransferProtos.OpBlockChecksumResponseProto;
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import org.apache.hadoop.hdfs.protocol.proto.DataTransferProtos.Status;
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import org.apache.hadoop.hdfs.security.token.block.BlockTokenIdentifier;
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import org.apache.hadoop.hdfs.security.token.delegation.DelegationTokenIdentifier;
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import org.apache.hadoop.hdfs.server.common.HdfsServerConstants;
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import org.apache.hadoop.hdfs.server.common.UpgradeStatusReport;
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@ -100,6 +107,7 @@ import org.apache.hadoop.security.token.Token;
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import org.apache.hadoop.security.token.TokenRenewer;
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import org.apache.hadoop.util.DataChecksum;
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import org.apache.hadoop.util.Progressable;
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import org.apache.hadoop.hdfs.security.token.block.InvalidBlockTokenException;
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/********************************************************
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* DFSClient can connect to a Hadoop Filesystem and
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@ -230,6 +238,7 @@ public class DFSClient implements java.io.Closeable {
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*/
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private final Map<String, DFSOutputStream> filesBeingWritten
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= new HashMap<String, DFSOutputStream>();
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private boolean shortCircuitLocalReads;
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/**
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* Same as this(NameNode.getAddress(conf), conf);
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|
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@ -293,6 +302,13 @@ public class DFSClient implements java.io.Closeable {
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"Expecting exactly one of nameNodeAddr and rpcNamenode being null: "
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+ "nameNodeAddr=" + nameNodeAddr + ", rpcNamenode=" + rpcNamenode);
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}
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// read directly from the block file if configured.
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this.shortCircuitLocalReads = conf.getBoolean(
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DFSConfigKeys.DFS_CLIENT_READ_SHORTCIRCUIT_KEY,
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DFSConfigKeys.DFS_CLIENT_READ_SHORTCIRCUIT_DEFAULT);
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if (LOG.isDebugEnabled()) {
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LOG.debug("Short circuit read is " + shortCircuitLocalReads);
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}
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}
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/**
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|
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@ -499,6 +515,82 @@ public class DFSClient implements java.io.Closeable {
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}
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||||
}
|
||||
|
||||
/**
|
||||
* Get {@link BlockReader} for short circuited local reads.
|
||||
*/
|
||||
static BlockReader getLocalBlockReader(Configuration conf,
|
||||
String src, ExtendedBlock blk, Token<BlockTokenIdentifier> accessToken,
|
||||
DatanodeInfo chosenNode, int socketTimeout, long offsetIntoBlock)
|
||||
throws InvalidToken, IOException {
|
||||
try {
|
||||
return BlockReaderLocal.newBlockReader(conf, src, blk, accessToken,
|
||||
chosenNode, socketTimeout, offsetIntoBlock, blk.getNumBytes()
|
||||
- offsetIntoBlock);
|
||||
} catch (RemoteException re) {
|
||||
throw re.unwrapRemoteException(InvalidToken.class,
|
||||
AccessControlException.class);
|
||||
}
|
||||
}
|
||||
|
||||
private static Set<String> localIpAddresses = Collections
|
||||
.synchronizedSet(new HashSet<String>());
|
||||
|
||||
private static boolean isLocalAddress(InetSocketAddress targetAddr) {
|
||||
InetAddress addr = targetAddr.getAddress();
|
||||
if (localIpAddresses.contains(addr.getHostAddress())) {
|
||||
if (LOG.isTraceEnabled()) {
|
||||
LOG.trace("Address " + targetAddr + " is local");
|
||||
}
|
||||
return true;
|
||||
}
|
||||
|
||||
// Check if the address is any local or loop back
|
||||
boolean local = addr.isAnyLocalAddress() || addr.isLoopbackAddress();
|
||||
|
||||
// Check if the address is defined on any interface
|
||||
if (!local) {
|
||||
try {
|
||||
local = NetworkInterface.getByInetAddress(addr) != null;
|
||||
} catch (SocketException e) {
|
||||
local = false;
|
||||
}
|
||||
}
|
||||
if (LOG.isTraceEnabled()) {
|
||||
LOG.trace("Address " + targetAddr + " is local");
|
||||
}
|
||||
if (local == true) {
|
||||
localIpAddresses.add(addr.getHostAddress());
|
||||
}
|
||||
return local;
|
||||
}
|
||||
|
||||
/**
|
||||
* Should the block access token be refetched on an exception
|
||||
*
|
||||
* @param ex Exception received
|
||||
* @param targetAddr Target datanode address from where exception was received
|
||||
* @return true if block access token has expired or invalid and it should be
|
||||
* refetched
|
||||
*/
|
||||
private static boolean tokenRefetchNeeded(IOException ex,
|
||||
InetSocketAddress targetAddr) {
|
||||
/*
|
||||
* Get a new access token and retry. Retry is needed in 2 cases. 1) When
|
||||
* both NN and DN re-started while DFSClient holding a cached access token.
|
||||
* 2) In the case that NN fails to update its access key at pre-set interval
|
||||
* (by a wide margin) and subsequently restarts. In this case, DN
|
||||
* re-registers itself with NN and receives a new access key, but DN will
|
||||
* delete the old access key from its memory since it's considered expired
|
||||
* based on the estimated expiration date.
|
||||
*/
|
||||
if (ex instanceof InvalidBlockTokenException || ex instanceof InvalidToken) {
|
||||
LOG.info("Access token was invalid when connecting to " + targetAddr
|
||||
+ " : " + ex);
|
||||
return true;
|
||||
}
|
||||
return false;
|
||||
}
|
||||
|
||||
/**
|
||||
* Cancel a delegation token
|
||||
* @param token the token to cancel
|
||||
|
|
@ -1599,6 +1691,14 @@ public class DFSClient implements java.io.Closeable {
|
|||
}
|
||||
}
|
||||
|
||||
boolean shouldTryShortCircuitRead(InetSocketAddress targetAddr)
|
||||
throws IOException {
|
||||
if (shortCircuitLocalReads && isLocalAddress(targetAddr)) {
|
||||
return true;
|
||||
}
|
||||
return false;
|
||||
}
|
||||
|
||||
void reportChecksumFailure(String file, ExtendedBlock blk, DatanodeInfo dn) {
|
||||
DatanodeInfo [] dnArr = { dn };
|
||||
LocatedBlock [] lblocks = { new LocatedBlock(blk, dnArr) };
|
||||
|
|
@ -1620,4 +1720,8 @@ public class DFSClient implements java.io.Closeable {
|
|||
return getClass().getSimpleName() + "[clientName=" + clientName
|
||||
+ ", ugi=" + ugi + "]";
|
||||
}
|
||||
|
||||
void disableShortCircuit() {
|
||||
shortCircuitLocalReads = false;
|
||||
}
|
||||
}
|
||||
|
|
|
|||
|
|
@ -261,6 +261,10 @@ public class DFSConfigKeys extends CommonConfigurationKeys {
|
|||
public static final String DFS_DEFAULT_MAX_CORRUPT_FILES_RETURNED_KEY = "dfs.corruptfilesreturned.max";
|
||||
public static final int DFS_DEFAULT_MAX_CORRUPT_FILES_RETURNED = 500;
|
||||
|
||||
public static final String DFS_CLIENT_READ_SHORTCIRCUIT_KEY = "dfs.client.read.shortcircuit";
|
||||
public static final boolean DFS_CLIENT_READ_SHORTCIRCUIT_DEFAULT = false;
|
||||
public static final String DFS_CLIENT_READ_SHORTCIRCUIT_SKIP_CHECKSUM_KEY = "dfs.client.read.shortcircuit.skip.checksum";
|
||||
public static final boolean DFS_CLIENT_READ_SHORTCIRCUIT_SKIP_CHECKSUM_DEFAULT = false;
|
||||
|
||||
// property for fsimage compression
|
||||
public static final String DFS_IMAGE_COMPRESS_KEY = "dfs.image.compress";
|
||||
|
|
@ -301,4 +305,5 @@ public class DFSConfigKeys extends CommonConfigurationKeys {
|
|||
public static final String DFS_NAMENODE_CHECKED_VOLUMES_KEY = "dfs.namenode.resource.checked.volumes";
|
||||
public static final String DFS_WEB_AUTHENTICATION_KERBEROS_PRINCIPAL_KEY = "dfs.web.authentication.kerberos.principal";
|
||||
public static final String DFS_WEB_AUTHENTICATION_KERBEROS_KEYTAB_KEY = "dfs.web.authentication.kerberos.keytab";
|
||||
public static final String DFS_BLOCK_LOCAL_PATH_ACCESS_USER_KEY = "dfs.block.local-path-access.user";
|
||||
}
|
||||
|
|
|
|||
|
|
@ -46,6 +46,7 @@ import org.apache.hadoop.hdfs.server.datanode.ReplicaNotFoundException;
|
|||
import org.apache.hadoop.ipc.RPC;
|
||||
import org.apache.hadoop.ipc.RemoteException;
|
||||
import org.apache.hadoop.net.NetUtils;
|
||||
import org.apache.hadoop.security.AccessControlException;
|
||||
import org.apache.hadoop.security.token.Token;
|
||||
|
||||
/****************************************************************
|
||||
|
|
@ -405,11 +406,8 @@ public class DFSInputStream extends FSInputStream {
|
|||
try {
|
||||
ExtendedBlock blk = targetBlock.getBlock();
|
||||
Token<BlockTokenIdentifier> accessToken = targetBlock.getBlockToken();
|
||||
|
||||
blockReader = getBlockReader(
|
||||
targetAddr, src, blk,
|
||||
accessToken,
|
||||
offsetIntoBlock, blk.getNumBytes() - offsetIntoBlock,
|
||||
blockReader = getBlockReader(targetAddr, chosenNode, src, blk,
|
||||
accessToken, offsetIntoBlock, blk.getNumBytes() - offsetIntoBlock,
|
||||
buffersize, verifyChecksum, dfsClient.clientName);
|
||||
if(connectFailedOnce) {
|
||||
DFSClient.LOG.info("Successfully connected to " + targetAddr +
|
||||
|
|
@ -666,12 +664,9 @@ public class DFSInputStream extends FSInputStream {
|
|||
Token<BlockTokenIdentifier> blockToken = block.getBlockToken();
|
||||
|
||||
int len = (int) (end - start + 1);
|
||||
|
||||
reader = getBlockReader(targetAddr, src,
|
||||
block.getBlock(),
|
||||
blockToken,
|
||||
start, len, buffersize,
|
||||
verifyChecksum, dfsClient.clientName);
|
||||
reader = getBlockReader(targetAddr, chosenNode, src, block.getBlock(),
|
||||
blockToken, start, len, buffersize, verifyChecksum,
|
||||
dfsClient.clientName);
|
||||
int nread = reader.readAll(buf, offset, len);
|
||||
if (nread != len) {
|
||||
throw new IOException("truncated return from reader.read(): " +
|
||||
|
|
@ -684,6 +679,10 @@ public class DFSInputStream extends FSInputStream {
|
|||
e.getPos() + " from " + chosenNode.getName());
|
||||
// we want to remember what we have tried
|
||||
addIntoCorruptedBlockMap(block.getBlock(), chosenNode, corruptedBlockMap);
|
||||
} catch (AccessControlException ex) {
|
||||
DFSClient.LOG.warn("Short circuit access failed ", ex);
|
||||
dfsClient.disableShortCircuit();
|
||||
continue;
|
||||
} catch (IOException e) {
|
||||
if (e instanceof InvalidBlockTokenException && refetchToken > 0) {
|
||||
DFSClient.LOG.info("Will get a new access token and retry, "
|
||||
|
|
@ -726,6 +725,7 @@ public class DFSInputStream extends FSInputStream {
|
|||
* Otherwise, it will create a new connection.
|
||||
*
|
||||
* @param dnAddr Address of the datanode
|
||||
* @param chosenNode Chosen datanode information
|
||||
* @param file File location
|
||||
* @param block The Block object
|
||||
* @param blockToken The access token for security
|
||||
|
|
@ -737,6 +737,7 @@ public class DFSInputStream extends FSInputStream {
|
|||
* @return New BlockReader instance
|
||||
*/
|
||||
protected BlockReader getBlockReader(InetSocketAddress dnAddr,
|
||||
DatanodeInfo chosenNode,
|
||||
String file,
|
||||
ExtendedBlock block,
|
||||
Token<BlockTokenIdentifier> blockToken,
|
||||
|
|
@ -746,6 +747,12 @@ public class DFSInputStream extends FSInputStream {
|
|||
boolean verifyChecksum,
|
||||
String clientName)
|
||||
throws IOException {
|
||||
|
||||
if (dfsClient.shouldTryShortCircuitRead(dnAddr)) {
|
||||
return DFSClient.getLocalBlockReader(dfsClient.conf, src, block,
|
||||
blockToken, chosenNode, dfsClient.hdfsTimeout, startOffset);
|
||||
}
|
||||
|
||||
IOException err = null;
|
||||
boolean fromCache = true;
|
||||
|
||||
|
|
|
|||
|
|
@ -51,6 +51,7 @@ import org.apache.hadoop.hdfs.protocol.DatanodeInfo;
|
|||
import org.apache.hadoop.hdfs.protocol.LocatedBlock;
|
||||
import org.apache.hadoop.hdfs.protocol.LocatedBlocks;
|
||||
import org.apache.hadoop.hdfs.server.namenode.NameNode;
|
||||
import org.apache.hadoop.ipc.RPC;
|
||||
import org.apache.hadoop.net.NetUtils;
|
||||
import org.apache.hadoop.net.NodeBase;
|
||||
import org.apache.hadoop.security.UserGroupInformation;
|
||||
|
|
@ -638,6 +639,14 @@ public class DFSUtil {
|
|||
locatedBlock);
|
||||
}
|
||||
|
||||
/** Create {@link ClientDatanodeProtocol} proxy using kerberos ticket */
|
||||
static ClientDatanodeProtocol createClientDatanodeProtocolProxy(
|
||||
DatanodeID datanodeid, Configuration conf, int socketTimeout)
|
||||
throws IOException {
|
||||
return new org.apache.hadoop.hdfs.protocolR23Compatible.ClientDatanodeProtocolTranslatorR23(
|
||||
datanodeid, conf, socketTimeout);
|
||||
}
|
||||
|
||||
/** Create a {@link ClientDatanodeProtocol} proxy */
|
||||
public static ClientDatanodeProtocol createClientDatanodeProtocolProxy(
|
||||
InetSocketAddress addr, UserGroupInformation ticket, Configuration conf,
|
||||
|
|
|
|||
|
|
@ -85,7 +85,7 @@ public class RemoteBlockReader2 implements BlockReader {
|
|||
|
||||
Socket dnSock; //for now just sending the status code (e.g. checksumOk) after the read.
|
||||
private ReadableByteChannel in;
|
||||
private DataChecksum checksum;
|
||||
protected DataChecksum checksum;
|
||||
|
||||
private PacketHeader curHeader;
|
||||
private ByteBuffer curPacketBuf = null;
|
||||
|
|
@ -96,25 +96,25 @@ public class RemoteBlockReader2 implements BlockReader {
|
|||
private long lastSeqNo = -1;
|
||||
|
||||
/** offset in block where reader wants to actually read */
|
||||
private long startOffset;
|
||||
private final String filename;
|
||||
protected long startOffset;
|
||||
protected final String filename;
|
||||
|
||||
private static DirectBufferPool bufferPool =
|
||||
protected static DirectBufferPool bufferPool =
|
||||
new DirectBufferPool();
|
||||
private ByteBuffer headerBuf = ByteBuffer.allocate(
|
||||
PacketHeader.PKT_HEADER_LEN);
|
||||
|
||||
private int bytesPerChecksum;
|
||||
private int checksumSize;
|
||||
protected int bytesPerChecksum;
|
||||
protected int checksumSize;
|
||||
|
||||
/**
|
||||
* The total number of bytes we need to transfer from the DN.
|
||||
* This is the amount that the user has requested plus some padding
|
||||
* at the beginning so that the read can begin on a chunk boundary.
|
||||
*/
|
||||
private long bytesNeededToFinish;
|
||||
protected long bytesNeededToFinish;
|
||||
|
||||
private final boolean verifyChecksum;
|
||||
protected final boolean verifyChecksum;
|
||||
|
||||
private boolean sentStatusCode = false;
|
||||
|
||||
|
|
@ -271,7 +271,7 @@ public class RemoteBlockReader2 implements BlockReader {
|
|||
}
|
||||
}
|
||||
|
||||
private RemoteBlockReader2(String file, String bpid, long blockId,
|
||||
protected RemoteBlockReader2(String file, String bpid, long blockId,
|
||||
ReadableByteChannel in, DataChecksum checksum, boolean verifyChecksum,
|
||||
long startOffset, long firstChunkOffset, long bytesToRead, Socket dnSock) {
|
||||
// Path is used only for printing block and file information in debug
|
||||
|
|
|
|||
|
|
@ -0,0 +1,97 @@
|
|||
/**
|
||||
* 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.protocol;
|
||||
|
||||
import java.io.DataInput;
|
||||
import java.io.DataOutput;
|
||||
import java.io.IOException;
|
||||
|
||||
import org.apache.hadoop.classification.InterfaceAudience;
|
||||
import org.apache.hadoop.classification.InterfaceStability;
|
||||
import org.apache.hadoop.io.Text;
|
||||
import org.apache.hadoop.io.Writable;
|
||||
import org.apache.hadoop.io.WritableFactories;
|
||||
import org.apache.hadoop.io.WritableFactory;
|
||||
|
||||
/**
|
||||
* A block and the full path information to the block data file and
|
||||
* the metadata file stored on the local file system.
|
||||
*/
|
||||
@InterfaceAudience.Private
|
||||
@InterfaceStability.Evolving
|
||||
public class BlockLocalPathInfo implements Writable {
|
||||
static final WritableFactory FACTORY = new WritableFactory() {
|
||||
public Writable newInstance() { return new BlockLocalPathInfo(); }
|
||||
};
|
||||
static { // register a ctor
|
||||
WritableFactories.setFactory(BlockLocalPathInfo.class, FACTORY);
|
||||
}
|
||||
|
||||
private ExtendedBlock block;
|
||||
private String localBlockPath = ""; // local file storing the data
|
||||
private String localMetaPath = ""; // local file storing the checksum
|
||||
|
||||
public BlockLocalPathInfo() {}
|
||||
|
||||
/**
|
||||
* Constructs BlockLocalPathInfo.
|
||||
* @param b The block corresponding to this lock path info.
|
||||
* @param file Block data file.
|
||||
* @param metafile Metadata file for the block.
|
||||
*/
|
||||
public BlockLocalPathInfo(ExtendedBlock b, String file, String metafile) {
|
||||
block = b;
|
||||
localBlockPath = file;
|
||||
localMetaPath = metafile;
|
||||
}
|
||||
|
||||
/**
|
||||
* Get the Block data file.
|
||||
* @return Block data file.
|
||||
*/
|
||||
public String getBlockPath() {return localBlockPath;}
|
||||
|
||||
/**
|
||||
* Get the Block metadata file.
|
||||
* @return Block metadata file.
|
||||
*/
|
||||
public String getMetaPath() {return localMetaPath;}
|
||||
|
||||
@Override
|
||||
public void write(DataOutput out) throws IOException {
|
||||
block.write(out);
|
||||
Text.writeString(out, localBlockPath);
|
||||
Text.writeString(out, localMetaPath);
|
||||
}
|
||||
|
||||
@Override
|
||||
public void readFields(DataInput in) throws IOException {
|
||||
block = new ExtendedBlock();
|
||||
block.readFields(in);
|
||||
localBlockPath = Text.readString(in);
|
||||
localMetaPath = Text.readString(in);
|
||||
}
|
||||
|
||||
/**
|
||||
* Get number of bytes in the block.
|
||||
* @return Number of bytes in the block.
|
||||
*/
|
||||
public long getNumBytes() {
|
||||
return block.getNumBytes();
|
||||
}
|
||||
}
|
||||
|
|
@ -22,9 +22,11 @@ import java.io.IOException;
|
|||
import org.apache.hadoop.classification.InterfaceAudience;
|
||||
import org.apache.hadoop.classification.InterfaceStability;
|
||||
import org.apache.hadoop.hdfs.DFSConfigKeys;
|
||||
import org.apache.hadoop.hdfs.security.token.block.BlockTokenIdentifier;
|
||||
import org.apache.hadoop.hdfs.security.token.block.BlockTokenSelector;
|
||||
import org.apache.hadoop.ipc.VersionedProtocol;
|
||||
import org.apache.hadoop.security.KerberosInfo;
|
||||
import org.apache.hadoop.security.token.Token;
|
||||
import org.apache.hadoop.security.token.TokenInfo;
|
||||
|
||||
/** An client-datanode protocol for block recovery
|
||||
|
|
@ -83,4 +85,29 @@ public interface ClientDatanodeProtocol extends VersionedProtocol {
|
|||
* @throws IOException
|
||||
*/
|
||||
void deleteBlockPool(String bpid, boolean force) throws IOException;
|
||||
|
||||
/**
|
||||
* Retrieves the path names of the block file and metadata file stored on the
|
||||
* local file system.
|
||||
*
|
||||
* In order for this method to work, one of the following should be satisfied:
|
||||
* <ul>
|
||||
* <li>
|
||||
* The client user must be configured at the datanode to be able to use this
|
||||
* method.</li>
|
||||
* <li>
|
||||
* When security is enabled, kerberos authentication must be used to connect
|
||||
* to the datanode.</li>
|
||||
* </ul>
|
||||
*
|
||||
* @param block
|
||||
* the specified block on the local datanode
|
||||
* @param token
|
||||
* the block access token.
|
||||
* @return the BlockLocalPathInfo of a block
|
||||
* @throws IOException
|
||||
* on error
|
||||
*/
|
||||
BlockLocalPathInfo getBlockLocalPathInfo(ExtendedBlock block,
|
||||
Token<BlockTokenIdentifier> token) throws IOException;
|
||||
}
|
||||
|
|
|
|||
|
|
@ -21,9 +21,13 @@ import java.io.IOException;
|
|||
|
||||
import org.apache.hadoop.classification.InterfaceAudience;
|
||||
import org.apache.hadoop.classification.InterfaceStability;
|
||||
import org.apache.hadoop.hdfs.protocol.BlockLocalPathInfo;
|
||||
import org.apache.hadoop.hdfs.protocol.ClientDatanodeProtocol;
|
||||
import org.apache.hadoop.hdfs.protocol.ExtendedBlock;
|
||||
import org.apache.hadoop.hdfs.security.token.block.BlockTokenIdentifier;
|
||||
import org.apache.hadoop.ipc.ProtocolSignature;
|
||||
import org.apache.hadoop.ipc.RPC;
|
||||
import org.apache.hadoop.security.token.Token;
|
||||
|
||||
/**
|
||||
* This class is used on the server side.
|
||||
|
|
@ -116,4 +120,10 @@ public class ClientDatanodeProtocolServerSideTranslatorR23 implements
|
|||
public void deleteBlockPool(String bpid, boolean force) throws IOException {
|
||||
server.deleteBlockPool(bpid, force);
|
||||
}
|
||||
|
||||
@Override
|
||||
public BlockLocalPathInfo getBlockLocalPathInfo(ExtendedBlock block,
|
||||
Token<BlockTokenIdentifier> token) throws IOException {
|
||||
return server.getBlockLocalPathInfo(block, token);
|
||||
}
|
||||
}
|
||||
|
|
@ -26,14 +26,17 @@ import org.apache.hadoop.classification.InterfaceAudience;
|
|||
import org.apache.hadoop.classification.InterfaceStability;
|
||||
import org.apache.hadoop.conf.Configuration;
|
||||
import org.apache.hadoop.fs.CommonConfigurationKeysPublic;
|
||||
import org.apache.hadoop.hdfs.protocol.BlockLocalPathInfo;
|
||||
import org.apache.hadoop.hdfs.protocol.ClientDatanodeProtocol;
|
||||
import org.apache.hadoop.hdfs.protocol.DatanodeID;
|
||||
import org.apache.hadoop.hdfs.protocol.ExtendedBlock;
|
||||
import org.apache.hadoop.hdfs.protocol.LocatedBlock;
|
||||
import org.apache.hadoop.hdfs.security.token.block.BlockTokenIdentifier;
|
||||
import org.apache.hadoop.ipc.ProtocolSignature;
|
||||
import org.apache.hadoop.ipc.RPC;
|
||||
import org.apache.hadoop.net.NetUtils;
|
||||
import org.apache.hadoop.security.UserGroupInformation;
|
||||
import org.apache.hadoop.security.token.Token;
|
||||
|
||||
|
||||
/**
|
||||
|
|
@ -63,6 +66,23 @@ public class ClientDatanodeProtocolTranslatorR23 implements
|
|||
rpcProxy = createClientDatanodeProtocolProxy(addr, ticket, conf, factory);
|
||||
}
|
||||
|
||||
/**
|
||||
* Constructor.
|
||||
* @param datanodeid Datanode to connect to.
|
||||
* @param conf Configuration.
|
||||
* @param socketTimeout Socket timeout to use.
|
||||
* @throws IOException
|
||||
*/
|
||||
public ClientDatanodeProtocolTranslatorR23(DatanodeID datanodeid,
|
||||
Configuration conf, int socketTimeout) throws IOException {
|
||||
InetSocketAddress addr = NetUtils.createSocketAddr(datanodeid.getHost()
|
||||
+ ":" + datanodeid.getIpcPort());
|
||||
rpcProxy = RPC.getProxy(ClientDatanodeWireProtocol.class,
|
||||
ClientDatanodeWireProtocol.versionID, addr,
|
||||
UserGroupInformation.getCurrentUser(), conf,
|
||||
NetUtils.getDefaultSocketFactory(conf), socketTimeout);
|
||||
}
|
||||
|
||||
static ClientDatanodeWireProtocol createClientDatanodeProtocolProxy(
|
||||
DatanodeID datanodeid, Configuration conf, int socketTimeout,
|
||||
LocatedBlock locatedBlock)
|
||||
|
|
@ -134,4 +154,9 @@ public class ClientDatanodeProtocolTranslatorR23 implements
|
|||
|
||||
}
|
||||
|
||||
@Override
|
||||
public BlockLocalPathInfo getBlockLocalPathInfo(ExtendedBlock block,
|
||||
Token<BlockTokenIdentifier> token) throws IOException {
|
||||
return rpcProxy.getBlockLocalPathInfo(block, token);
|
||||
}
|
||||
}
|
||||
|
|
|
|||
|
|
@ -24,11 +24,15 @@ import org.apache.commons.logging.LogFactory;
|
|||
import org.apache.hadoop.classification.InterfaceAudience;
|
||||
import org.apache.hadoop.classification.InterfaceStability;
|
||||
import org.apache.hadoop.hdfs.DFSConfigKeys;
|
||||
import org.apache.hadoop.hdfs.protocol.BlockLocalPathInfo;
|
||||
import org.apache.hadoop.hdfs.protocol.ExtendedBlock;
|
||||
import org.apache.hadoop.hdfs.protocol.HdfsConstants;
|
||||
import org.apache.hadoop.hdfs.security.token.block.BlockTokenIdentifier;
|
||||
import org.apache.hadoop.hdfs.security.token.block.BlockTokenSelector;
|
||||
import org.apache.hadoop.ipc.ProtocolInfo;
|
||||
import org.apache.hadoop.ipc.VersionedProtocol;
|
||||
import org.apache.hadoop.security.KerberosInfo;
|
||||
import org.apache.hadoop.security.token.Token;
|
||||
import org.apache.hadoop.security.token.TokenInfo;
|
||||
|
||||
/**
|
||||
|
|
@ -77,6 +81,13 @@ public interface ClientDatanodeWireProtocol extends VersionedProtocol {
|
|||
*/
|
||||
void deleteBlockPool(String bpid, boolean force) throws IOException;
|
||||
|
||||
/**
|
||||
* The specification of this method matches that of
|
||||
* {@link org.apache.hadoop.hdfs.protocol.ClientDatanodeProtocol#getBlockLocalPathInfo(ExtendedBlock, Token)}
|
||||
*/
|
||||
BlockLocalPathInfo getBlockLocalPathInfo(ExtendedBlock block,
|
||||
Token<BlockTokenIdentifier> token) throws IOException;
|
||||
|
||||
/**
|
||||
* This method is defined to get the protocol signature using
|
||||
* the R23 protocol - hence we have added the suffix of 2 to the method name
|
||||
|
|
|
|||
|
|
@ -28,6 +28,9 @@ import java.io.RandomAccessFile;
|
|||
|
||||
import org.apache.hadoop.io.IOUtils;
|
||||
import org.apache.hadoop.util.DataChecksum;
|
||||
import org.apache.hadoop.classification.InterfaceAudience;
|
||||
import org.apache.hadoop.classification.InterfaceStability;
|
||||
|
||||
|
||||
|
||||
/**
|
||||
|
|
@ -35,7 +38,9 @@ import org.apache.hadoop.util.DataChecksum;
|
|||
* This is not related to the Block related functionality in Namenode.
|
||||
* The biggest part of data block metadata is CRC for the block.
|
||||
*/
|
||||
class BlockMetadataHeader {
|
||||
@InterfaceAudience.Private
|
||||
@InterfaceStability.Evolving
|
||||
public class BlockMetadataHeader {
|
||||
|
||||
static final short METADATA_VERSION = FSDataset.METADATA_VERSION;
|
||||
|
||||
|
|
@ -52,11 +57,13 @@ class BlockMetadataHeader {
|
|||
this.version = version;
|
||||
}
|
||||
|
||||
short getVersion() {
|
||||
/** Get the version */
|
||||
public short getVersion() {
|
||||
return version;
|
||||
}
|
||||
|
||||
DataChecksum getChecksum() {
|
||||
/** Get the checksum */
|
||||
public DataChecksum getChecksum() {
|
||||
return checksum;
|
||||
}
|
||||
|
||||
|
|
@ -67,7 +74,7 @@ class BlockMetadataHeader {
|
|||
* @return Metadata Header
|
||||
* @throws IOException
|
||||
*/
|
||||
static BlockMetadataHeader readHeader(DataInputStream in) throws IOException {
|
||||
public static BlockMetadataHeader readHeader(DataInputStream in) throws IOException {
|
||||
return readHeader(in.readShort(), in);
|
||||
}
|
||||
|
||||
|
|
|
|||
|
|
@ -54,6 +54,7 @@ import static org.apache.hadoop.hdfs.DFSConfigKeys.DFS_WEBHDFS_ENABLED_KEY;
|
|||
import static org.apache.hadoop.hdfs.DFSConfigKeys.DFS_WEBHDFS_ENABLED_DEFAULT;
|
||||
|
||||
import java.io.BufferedOutputStream;
|
||||
import java.io.ByteArrayInputStream;
|
||||
import java.io.DataInputStream;
|
||||
import java.io.DataOutputStream;
|
||||
import java.io.File;
|
||||
|
|
@ -89,6 +90,7 @@ import org.apache.hadoop.fs.FileSystem;
|
|||
import org.apache.hadoop.fs.LocalFileSystem;
|
||||
import org.apache.hadoop.fs.Path;
|
||||
import org.apache.hadoop.fs.permission.FsPermission;
|
||||
import org.apache.hadoop.hdfs.DFSConfigKeys;
|
||||
import org.apache.hadoop.hdfs.DFSUtil;
|
||||
import org.apache.hadoop.hdfs.HDFSPolicyProvider;
|
||||
import org.apache.hadoop.hdfs.HdfsConfiguration;
|
||||
|
|
@ -110,6 +112,7 @@ import org.apache.hadoop.hdfs.protocolR23Compatible.ClientDatanodeProtocolServer
|
|||
import org.apache.hadoop.hdfs.security.token.block.BlockPoolTokenSecretManager;
|
||||
import org.apache.hadoop.hdfs.security.token.block.BlockTokenIdentifier;
|
||||
import org.apache.hadoop.hdfs.security.token.block.BlockTokenSecretManager;
|
||||
import org.apache.hadoop.hdfs.security.token.block.BlockTokenSecretManager.AccessMode;
|
||||
import org.apache.hadoop.hdfs.security.token.block.ExportedBlockKeys;
|
||||
import org.apache.hadoop.hdfs.security.token.block.InvalidBlockTokenException;
|
||||
import org.apache.hadoop.hdfs.server.common.HdfsServerConstants;
|
||||
|
|
@ -130,6 +133,7 @@ import org.apache.hadoop.hdfs.server.protocol.DatanodeRegistration;
|
|||
import org.apache.hadoop.hdfs.server.protocol.InterDatanodeProtocol;
|
||||
import org.apache.hadoop.hdfs.server.protocol.NamespaceInfo;
|
||||
import org.apache.hadoop.hdfs.server.protocol.ReplicaRecoveryInfo;
|
||||
import org.apache.hadoop.hdfs.protocol.BlockLocalPathInfo;
|
||||
import org.apache.hadoop.hdfs.server.protocolR23Compatible.InterDatanodeProtocolServerSideTranslatorR23;
|
||||
import org.apache.hadoop.hdfs.server.protocolR23Compatible.InterDatanodeProtocolTranslatorR23;
|
||||
import org.apache.hadoop.hdfs.server.protocolR23Compatible.InterDatanodeWireProtocol;
|
||||
|
|
@ -145,8 +149,10 @@ import org.apache.hadoop.metrics2.lib.DefaultMetricsSystem;
|
|||
import org.apache.hadoop.metrics2.util.MBeans;
|
||||
import org.apache.hadoop.net.DNS;
|
||||
import org.apache.hadoop.net.NetUtils;
|
||||
import org.apache.hadoop.security.AccessControlException;
|
||||
import org.apache.hadoop.security.SecurityUtil;
|
||||
import org.apache.hadoop.security.UserGroupInformation;
|
||||
import org.apache.hadoop.security.UserGroupInformation.AuthenticationMethod;
|
||||
import org.apache.hadoop.security.authorize.AccessControlList;
|
||||
import org.apache.hadoop.security.token.Token;
|
||||
import org.apache.hadoop.security.token.TokenIdentifier;
|
||||
|
|
@ -398,6 +404,8 @@ public class DataNode extends Configured
|
|||
private AbstractList<File> dataDirs;
|
||||
private Configuration conf;
|
||||
|
||||
private final String userWithLocalPathAccess;
|
||||
|
||||
/**
|
||||
* Create the DataNode given a configuration and an array of dataDirs.
|
||||
* 'dataDirs' is where the blocks are stored.
|
||||
|
|
@ -416,6 +424,8 @@ public class DataNode extends Configured
|
|||
final SecureResources resources) throws IOException {
|
||||
super(conf);
|
||||
|
||||
this.userWithLocalPathAccess = conf
|
||||
.get(DFSConfigKeys.DFS_BLOCK_LOCAL_PATH_ACCESS_USER_KEY);
|
||||
try {
|
||||
hostName = getHostName(conf);
|
||||
startDataNode(conf, dataDirs, resources);
|
||||
|
|
@ -1075,6 +1085,68 @@ public class DataNode extends Configured
|
|||
+ System.currentTimeMillis();
|
||||
}
|
||||
|
||||
/** Ensure the authentication method is kerberos */
|
||||
private void checkKerberosAuthMethod(String msg) throws IOException {
|
||||
// User invoking the call must be same as the datanode user
|
||||
if (!UserGroupInformation.isSecurityEnabled()) {
|
||||
return;
|
||||
}
|
||||
if (UserGroupInformation.getCurrentUser().getAuthenticationMethod() !=
|
||||
AuthenticationMethod.KERBEROS) {
|
||||
throw new AccessControlException("Error in " + msg
|
||||
+ "Only kerberos based authentication is allowed.");
|
||||
}
|
||||
}
|
||||
|
||||
private void checkBlockLocalPathAccess() throws IOException {
|
||||
checkKerberosAuthMethod("getBlockLocalPathInfo()");
|
||||
String currentUser = UserGroupInformation.getCurrentUser().getShortUserName();
|
||||
if (!currentUser.equals(this.userWithLocalPathAccess)) {
|
||||
throw new AccessControlException(
|
||||
"Can't continue with getBlockLocalPathInfo() "
|
||||
+ "authorization. The user " + currentUser
|
||||
+ " is not allowed to call getBlockLocalPathInfo");
|
||||
}
|
||||
}
|
||||
|
||||
@Override
|
||||
public BlockLocalPathInfo getBlockLocalPathInfo(ExtendedBlock block,
|
||||
Token<BlockTokenIdentifier> token) throws IOException {
|
||||
checkBlockLocalPathAccess();
|
||||
checkBlockToken(block, token, BlockTokenSecretManager.AccessMode.READ);
|
||||
BlockLocalPathInfo info = data.getBlockLocalPathInfo(block);
|
||||
if (LOG.isDebugEnabled()) {
|
||||
if (info != null) {
|
||||
if (LOG.isTraceEnabled()) {
|
||||
LOG.trace("getBlockLocalPathInfo successful block=" + block
|
||||
+ " blockfile " + info.getBlockPath() + " metafile "
|
||||
+ info.getMetaPath());
|
||||
}
|
||||
} else {
|
||||
if (LOG.isTraceEnabled()) {
|
||||
LOG.trace("getBlockLocalPathInfo for block=" + block
|
||||
+ " returning null");
|
||||
}
|
||||
}
|
||||
}
|
||||
metrics.incrBlocksGetLocalPathInfo();
|
||||
return info;
|
||||
}
|
||||
|
||||
private void checkBlockToken(ExtendedBlock block, Token<BlockTokenIdentifier> token,
|
||||
AccessMode accessMode) throws IOException {
|
||||
if (isBlockTokenEnabled && UserGroupInformation.isSecurityEnabled()) {
|
||||
BlockTokenIdentifier id = new BlockTokenIdentifier();
|
||||
ByteArrayInputStream buf = new ByteArrayInputStream(token.getIdentifier());
|
||||
DataInputStream in = new DataInputStream(buf);
|
||||
id.readFields(in);
|
||||
if (LOG.isDebugEnabled()) {
|
||||
LOG.debug("Got: " + id.toString());
|
||||
}
|
||||
blockPoolTokenSecretManager.checkAccess(id, null, block, accessMode);
|
||||
}
|
||||
}
|
||||
|
||||
/**
|
||||
* Shut down this instance of the datanode.
|
||||
* Returns only after shutdown is complete.
|
||||
|
|
|
|||
|
|
@ -52,6 +52,7 @@ import org.apache.hadoop.hdfs.DFSConfigKeys;
|
|||
import org.apache.hadoop.hdfs.DFSUtil;
|
||||
import org.apache.hadoop.hdfs.protocol.Block;
|
||||
import org.apache.hadoop.hdfs.protocol.BlockListAsLongs;
|
||||
import org.apache.hadoop.hdfs.protocol.BlockLocalPathInfo;
|
||||
import org.apache.hadoop.hdfs.protocol.ExtendedBlock;
|
||||
import org.apache.hadoop.hdfs.protocol.HdfsConstants;
|
||||
import org.apache.hadoop.hdfs.protocol.RecoveryInProgressException;
|
||||
|
|
@ -2658,4 +2659,14 @@ public class FSDataset implements FSDatasetInterface {
|
|||
volume.deleteBPDirectories(bpid, force);
|
||||
}
|
||||
}
|
||||
|
||||
@Override // FSDatasetInterface
|
||||
public BlockLocalPathInfo getBlockLocalPathInfo(ExtendedBlock block)
|
||||
throws IOException {
|
||||
File datafile = getBlockFile(block);
|
||||
File metafile = getMetaFile(datafile, block.getGenerationStamp());
|
||||
BlockLocalPathInfo info = new BlockLocalPathInfo(block,
|
||||
datafile.getAbsolutePath(), metafile.getAbsolutePath());
|
||||
return info;
|
||||
}
|
||||
}
|
||||
|
|
|
|||
|
|
@ -19,6 +19,7 @@ package org.apache.hadoop.hdfs.server.datanode;
|
|||
|
||||
|
||||
import java.io.Closeable;
|
||||
import java.io.File;
|
||||
import java.io.FilterInputStream;
|
||||
import java.io.IOException;
|
||||
import java.io.InputStream;
|
||||
|
|
@ -31,6 +32,7 @@ import org.apache.hadoop.hdfs.server.protocol.ReplicaRecoveryInfo;
|
|||
import org.apache.hadoop.hdfs.server.protocol.BlockRecoveryCommand.RecoveringBlock;
|
||||
import org.apache.hadoop.hdfs.protocol.Block;
|
||||
import org.apache.hadoop.hdfs.protocol.BlockListAsLongs;
|
||||
import org.apache.hadoop.hdfs.protocol.BlockLocalPathInfo;
|
||||
import org.apache.hadoop.hdfs.protocol.ExtendedBlock;
|
||||
import org.apache.hadoop.io.IOUtils;
|
||||
import org.apache.hadoop.util.DataChecksum;
|
||||
|
|
@ -402,4 +404,9 @@ public interface FSDatasetInterface extends FSDatasetMBean {
|
|||
* @throws IOException
|
||||
*/
|
||||
public void deleteBlockPool(String bpid, boolean force) throws IOException;
|
||||
|
||||
/**
|
||||
* Get {@link BlockLocalPathInfo} for the given block.
|
||||
**/
|
||||
public BlockLocalPathInfo getBlockLocalPathInfo(ExtendedBlock b) throws IOException;
|
||||
}
|
||||
|
|
|
|||
|
|
@ -60,6 +60,7 @@ public class DataNodeMetrics {
|
|||
@Metric MutableCounterLong readsFromRemoteClient;
|
||||
@Metric MutableCounterLong writesFromLocalClient;
|
||||
@Metric MutableCounterLong writesFromRemoteClient;
|
||||
@Metric MutableCounterLong blocksGetLocalPathInfo;
|
||||
|
||||
@Metric MutableCounterLong volumeFailures;
|
||||
|
||||
|
|
@ -165,4 +166,9 @@ public class DataNodeMetrics {
|
|||
public void incrVolumeFailures() {
|
||||
volumeFailures.incr();
|
||||
}
|
||||
|
||||
/** Increment for getBlockLocalPathInfo calls */
|
||||
public void incrBlocksGetLocalPathInfo() {
|
||||
blocksGetLocalPathInfo.incr();
|
||||
}
|
||||
}
|
||||
|
|
|
|||
|
|
@ -33,6 +33,7 @@ import org.apache.hadoop.hdfs.protocol.ExtendedBlock;
|
|||
import org.apache.hadoop.hdfs.protocol.LocatedBlock;
|
||||
import org.apache.hadoop.hdfs.security.token.block.BlockTokenIdentifier;
|
||||
import org.apache.hadoop.hdfs.server.datanode.DataNode;
|
||||
import org.apache.hadoop.hdfs.protocol.DatanodeInfo;
|
||||
|
||||
import org.apache.hadoop.security.token.Token;
|
||||
import org.junit.Test;
|
||||
|
|
@ -209,6 +210,7 @@ public class TestConnCache {
|
|||
MockGetBlockReader answer = new MockGetBlockReader();
|
||||
Mockito.doAnswer(answer).when(in).getBlockReader(
|
||||
(InetSocketAddress) Matchers.anyObject(),
|
||||
(DatanodeInfo) Matchers.anyObject(),
|
||||
Matchers.anyString(),
|
||||
(ExtendedBlock) Matchers.anyObject(),
|
||||
(Token<BlockTokenIdentifier>) Matchers.anyObject(),
|
||||
|
|
|
|||
|
|
@ -0,0 +1,304 @@
|
|||
/**
|
||||
* 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;
|
||||
|
||||
import static org.junit.Assert.assertTrue;
|
||||
|
||||
import java.io.EOFException;
|
||||
import java.io.IOException;
|
||||
import java.security.PrivilegedExceptionAction;
|
||||
|
||||
import org.apache.hadoop.conf.Configuration;
|
||||
import org.apache.hadoop.fs.FSDataInputStream;
|
||||
import org.apache.hadoop.fs.FSDataOutputStream;
|
||||
import org.apache.hadoop.fs.FileSystem;
|
||||
import org.apache.hadoop.fs.Path;
|
||||
import org.apache.hadoop.hdfs.protocol.BlockLocalPathInfo;
|
||||
import org.apache.hadoop.hdfs.protocol.ClientDatanodeProtocol;
|
||||
import org.apache.hadoop.hdfs.protocol.DatanodeInfo;
|
||||
import org.apache.hadoop.hdfs.protocol.ExtendedBlock;
|
||||
import org.apache.hadoop.hdfs.protocol.LocatedBlocks;
|
||||
import org.apache.hadoop.hdfs.protocol.datatransfer.DataTransferProtocol;
|
||||
import org.apache.hadoop.hdfs.security.token.block.BlockTokenIdentifier;
|
||||
import org.apache.hadoop.hdfs.server.datanode.DataNode;
|
||||
import org.apache.hadoop.hdfs.server.datanode.SimulatedFSDataset;
|
||||
import org.apache.hadoop.security.UserGroupInformation;
|
||||
import org.apache.hadoop.security.token.Token;
|
||||
import org.junit.Assert;
|
||||
import org.junit.Test;
|
||||
|
||||
/**
|
||||
* Test for short circuit read functionality using {@link BlockReaderLocal}.
|
||||
* When a block is being read by a client is on the local datanode, instead of
|
||||
* using {@link DataTransferProtocol} and connect to datanode, the short circuit
|
||||
* read allows reading the file directly from the files on the local file
|
||||
* system.
|
||||
*/
|
||||
public class TestShortCircuitLocalRead {
|
||||
|
||||
static final String DIR = "/" + TestShortCircuitLocalRead.class.getSimpleName() + "/";
|
||||
|
||||
static final long seed = 0xDEADBEEFL;
|
||||
static final int blockSize = 5120;
|
||||
boolean simulatedStorage = false;
|
||||
|
||||
// creates a file but does not close it
|
||||
static FSDataOutputStream createFile(FileSystem fileSys, Path name, int repl)
|
||||
throws IOException {
|
||||
FSDataOutputStream stm = fileSys.create(name, true,
|
||||
fileSys.getConf().getInt("io.file.buffer.size", 4096),
|
||||
(short)repl, (long)blockSize);
|
||||
return stm;
|
||||
}
|
||||
|
||||
static private void checkData(byte[] actual, int from, byte[] expected,
|
||||
String message) {
|
||||
checkData(actual, from, expected, actual.length, message);
|
||||
}
|
||||
|
||||
static private void checkData(byte[] actual, int from, byte[] expected, int len,
|
||||
String message) {
|
||||
for (int idx = 0; idx < len; idx++) {
|
||||
if (expected[from + idx] != actual[idx]) {
|
||||
Assert.fail(message + " byte " + (from + idx) + " differs. expected "
|
||||
+ expected[from + idx] + " actual " + actual[idx]);
|
||||
}
|
||||
}
|
||||
}
|
||||
|
||||
static void checkFileContent(FileSystem fs, Path name, byte[] expected,
|
||||
int readOffset) throws IOException {
|
||||
FSDataInputStream stm = fs.open(name);
|
||||
byte[] actual = new byte[expected.length-readOffset];
|
||||
stm.readFully(readOffset, actual);
|
||||
checkData(actual, readOffset, expected, "Read 2");
|
||||
stm.close();
|
||||
// Now read using a different API.
|
||||
actual = new byte[expected.length-readOffset];
|
||||
stm = fs.open(name);
|
||||
long skipped = stm.skip(readOffset);
|
||||
Assert.assertEquals(skipped, readOffset);
|
||||
//Read a small number of bytes first.
|
||||
int nread = stm.read(actual, 0, 3);
|
||||
nread += stm.read(actual, nread, 2);
|
||||
//Read across chunk boundary
|
||||
nread += stm.read(actual, nread, 517);
|
||||
checkData(actual, readOffset, expected, nread, "A few bytes");
|
||||
//Now read rest of it
|
||||
while (nread < actual.length) {
|
||||
int nbytes = stm.read(actual, nread, actual.length - nread);
|
||||
if (nbytes < 0) {
|
||||
throw new EOFException("End of file reached before reading fully.");
|
||||
}
|
||||
nread += nbytes;
|
||||
}
|
||||
checkData(actual, readOffset, expected, "Read 3");
|
||||
stm.close();
|
||||
}
|
||||
|
||||
/**
|
||||
* Test that file data can be read by reading the block file
|
||||
* directly from the local store.
|
||||
*/
|
||||
public void doTestShortCircuitRead(boolean ignoreChecksum, int size,
|
||||
int readOffset) throws IOException {
|
||||
Configuration conf = new Configuration();
|
||||
conf.setBoolean(DFSConfigKeys.DFS_CLIENT_READ_SHORTCIRCUIT_KEY, true);
|
||||
conf.setBoolean(DFSConfigKeys.DFS_CLIENT_READ_SHORTCIRCUIT_SKIP_CHECKSUM_KEY,
|
||||
ignoreChecksum);
|
||||
conf.set(DFSConfigKeys.DFS_BLOCK_LOCAL_PATH_ACCESS_USER_KEY,
|
||||
UserGroupInformation.getCurrentUser().getShortUserName());
|
||||
if (simulatedStorage) {
|
||||
conf.setBoolean(SimulatedFSDataset.CONFIG_PROPERTY_SIMULATED, true);
|
||||
}
|
||||
MiniDFSCluster cluster = new MiniDFSCluster.Builder(conf).numDataNodes(1)
|
||||
.format(true).build();
|
||||
FileSystem fs = cluster.getFileSystem();
|
||||
try {
|
||||
// check that / exists
|
||||
Path path = new Path("/");
|
||||
assertTrue("/ should be a directory", fs.getFileStatus(path)
|
||||
.isDirectory() == true);
|
||||
|
||||
byte[] fileData = AppendTestUtil.randomBytes(seed, size);
|
||||
// create a new file in home directory. Do not close it.
|
||||
Path file1 = new Path("filelocal.dat");
|
||||
FSDataOutputStream stm = createFile(fs, file1, 1);
|
||||
|
||||
// write to file
|
||||
stm.write(fileData);
|
||||
stm.close();
|
||||
checkFileContent(fs, file1, fileData, readOffset);
|
||||
} finally {
|
||||
fs.close();
|
||||
cluster.shutdown();
|
||||
}
|
||||
}
|
||||
|
||||
@Test
|
||||
public void testFileLocalReadNoChecksum() throws IOException {
|
||||
doTestShortCircuitRead(true, 3*blockSize+100, 0);
|
||||
}
|
||||
|
||||
@Test
|
||||
public void testFileLocalReadChecksum() throws IOException {
|
||||
doTestShortCircuitRead(false, 3*blockSize+100, 0);
|
||||
}
|
||||
|
||||
@Test
|
||||
public void testSmallFileLocalRead() throws IOException {
|
||||
doTestShortCircuitRead(false, 13, 0);
|
||||
doTestShortCircuitRead(false, 13, 5);
|
||||
doTestShortCircuitRead(true, 13, 0);
|
||||
doTestShortCircuitRead(true, 13, 5);
|
||||
}
|
||||
|
||||
@Test
|
||||
public void testReadFromAnOffset() throws IOException {
|
||||
doTestShortCircuitRead(false, 3*blockSize+100, 777);
|
||||
doTestShortCircuitRead(true, 3*blockSize+100, 777);
|
||||
}
|
||||
|
||||
@Test
|
||||
public void testLongFile() throws IOException {
|
||||
doTestShortCircuitRead(false, 10*blockSize+100, 777);
|
||||
doTestShortCircuitRead(true, 10*blockSize+100, 777);
|
||||
}
|
||||
|
||||
@Test
|
||||
public void testGetBlockLocalPathInfo() throws IOException, InterruptedException {
|
||||
final Configuration conf = new Configuration();
|
||||
conf.set(DFSConfigKeys.DFS_BLOCK_LOCAL_PATH_ACCESS_USER_KEY, "alloweduser");
|
||||
MiniDFSCluster cluster = new MiniDFSCluster.Builder(conf).numDataNodes(1)
|
||||
.format(true).build();
|
||||
cluster.waitActive();
|
||||
final DataNode dn = cluster.getDataNodes().get(0);
|
||||
FileSystem fs = cluster.getFileSystem();
|
||||
try {
|
||||
DFSTestUtil.createFile(fs, new Path("/tmp/x"), 16, (short) 1, 23);
|
||||
UserGroupInformation aUgi = UserGroupInformation
|
||||
.createRemoteUser("alloweduser");
|
||||
LocatedBlocks lb = cluster.getNameNode().getRpcServer()
|
||||
.getBlockLocations("/tmp/x", 0, 16);
|
||||
// Create a new block object, because the block inside LocatedBlock at
|
||||
// namenode is of type BlockInfo.
|
||||
ExtendedBlock blk = new ExtendedBlock(lb.get(0).getBlock());
|
||||
Token<BlockTokenIdentifier> token = lb.get(0).getBlockToken();
|
||||
final DatanodeInfo dnInfo = lb.get(0).getLocations()[0];
|
||||
ClientDatanodeProtocol proxy = aUgi
|
||||
.doAs(new PrivilegedExceptionAction<ClientDatanodeProtocol>() {
|
||||
@Override
|
||||
public ClientDatanodeProtocol run() throws Exception {
|
||||
return DFSUtil.createClientDatanodeProtocolProxy(dnInfo, conf,
|
||||
60000);
|
||||
}
|
||||
});
|
||||
|
||||
//This should succeed
|
||||
BlockLocalPathInfo blpi = proxy.getBlockLocalPathInfo(blk, token);
|
||||
Assert.assertEquals(dn.data.getBlockLocalPathInfo(blk).getBlockPath(),
|
||||
blpi.getBlockPath());
|
||||
|
||||
// Now try with a not allowed user.
|
||||
UserGroupInformation bUgi = UserGroupInformation
|
||||
.createRemoteUser("notalloweduser");
|
||||
proxy = bUgi
|
||||
.doAs(new PrivilegedExceptionAction<ClientDatanodeProtocol>() {
|
||||
@Override
|
||||
public ClientDatanodeProtocol run() throws Exception {
|
||||
return DFSUtil.createClientDatanodeProtocolProxy(dnInfo, conf,
|
||||
60000);
|
||||
}
|
||||
});
|
||||
try {
|
||||
proxy.getBlockLocalPathInfo(blk, token);
|
||||
Assert.fail("The call should have failed as " + bUgi.getShortUserName()
|
||||
+ " is not allowed to call getBlockLocalPathInfo");
|
||||
} catch (IOException ex) {
|
||||
Assert.assertTrue(ex.getMessage().contains(
|
||||
"not allowed to call getBlockLocalPathInfo"));
|
||||
}
|
||||
} finally {
|
||||
fs.close();
|
||||
cluster.shutdown();
|
||||
}
|
||||
}
|
||||
|
||||
/**
|
||||
* Test to run benchmarks between shortcircuit read vs regular read with
|
||||
* specified number of threads simultaneously reading.
|
||||
* <br>
|
||||
* Run this using the following command:
|
||||
* bin/hadoop --config confdir \
|
||||
* org.apache.hadoop.hdfs.TestShortCircuitLocalRead \
|
||||
* <shortcircuit on?> <checsum on?> <Number of threads>
|
||||
*/
|
||||
public static void main(String[] args) throws Exception {
|
||||
if (args.length != 3) {
|
||||
System.out.println("Usage: test shortcircuit checksum threadCount");
|
||||
System.exit(1);
|
||||
}
|
||||
boolean shortcircuit = Boolean.valueOf(args[0]);
|
||||
boolean checksum = Boolean.valueOf(args[1]);
|
||||
int threadCount = Integer.valueOf(args[2]);
|
||||
|
||||
// Setup create a file
|
||||
Configuration conf = new Configuration();
|
||||
conf.setBoolean(DFSConfigKeys.DFS_CLIENT_READ_SHORTCIRCUIT_KEY, shortcircuit);
|
||||
conf.setBoolean(DFSConfigKeys.DFS_CLIENT_READ_SHORTCIRCUIT_SKIP_CHECKSUM_KEY,
|
||||
checksum);
|
||||
|
||||
//Override fileSize and DATA_TO_WRITE to much larger values for benchmark test
|
||||
int fileSize = 1000 * blockSize + 100; // File with 1000 blocks
|
||||
final byte [] dataToWrite = AppendTestUtil.randomBytes(seed, fileSize);
|
||||
|
||||
// create a new file in home directory. Do not close it.
|
||||
final Path file1 = new Path("filelocal.dat");
|
||||
final FileSystem fs = FileSystem.get(conf);
|
||||
FSDataOutputStream stm = createFile(fs, file1, 1);
|
||||
|
||||
stm.write(dataToWrite);
|
||||
stm.close();
|
||||
|
||||
long start = System.currentTimeMillis();
|
||||
final int iteration = 20;
|
||||
Thread[] threads = new Thread[threadCount];
|
||||
for (int i = 0; i < threadCount; i++) {
|
||||
threads[i] = new Thread() {
|
||||
public void run() {
|
||||
for (int i = 0; i < iteration; i++) {
|
||||
try {
|
||||
checkFileContent(fs, file1, dataToWrite, 0);
|
||||
} catch (IOException e) {
|
||||
e.printStackTrace();
|
||||
}
|
||||
}
|
||||
}
|
||||
};
|
||||
}
|
||||
for (int i = 0; i < threadCount; i++) {
|
||||
threads[i].start();
|
||||
}
|
||||
for (int i = 0; i < threadCount; i++) {
|
||||
threads[i].join();
|
||||
}
|
||||
long end = System.currentTimeMillis();
|
||||
System.out.println("Iteration " + iteration + " took " + (end - start));
|
||||
fs.delete(file1, false);
|
||||
}
|
||||
}
|
||||
|
|
@ -35,6 +35,7 @@ import org.apache.hadoop.conf.Configuration;
|
|||
import org.apache.hadoop.hdfs.DFSConfigKeys;
|
||||
import org.apache.hadoop.hdfs.protocol.Block;
|
||||
import org.apache.hadoop.hdfs.protocol.BlockListAsLongs;
|
||||
import org.apache.hadoop.hdfs.protocol.BlockLocalPathInfo;
|
||||
import org.apache.hadoop.hdfs.protocol.ExtendedBlock;
|
||||
import org.apache.hadoop.hdfs.server.common.HdfsServerConstants.ReplicaState;
|
||||
import org.apache.hadoop.hdfs.server.datanode.FSDataset.BlockPoolSlice;
|
||||
|
|
@ -991,4 +992,10 @@ public class SimulatedFSDataset implements FSDatasetInterface, Configurable{
|
|||
}
|
||||
return r;
|
||||
}
|
||||
|
||||
@Override
|
||||
public BlockLocalPathInfo getBlockLocalPathInfo(ExtendedBlock b)
|
||||
throws IOException {
|
||||
throw new IOException("getBlockLocalPathInfo not supported.");
|
||||
}
|
||||
}
|
||||
|
|
|
|||
Loading…
Reference in New Issue