HDFS-15987. Improve oiv tool to parse fsimage file in parallel with delimited format. (#2918). Contributed by Hongbing Wang.
Signed-off-by: He Xiaoqiao <hexiaoqiao@apache.org>
This commit is contained in:
He Xiaoqiao
parent
26ba3846cc
commit
ef8bff0df9
@ -107,6 +107,7 @@ public class OfflineImageViewerPB {
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+ " Delimited outputs. If not set, the processor\n"
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+ " constructs the namespace in memory \n"
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+ " before outputting text.\n"
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+ "-m,--multiThread <arg> Use multiThread to process sub-sections.\n"
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+ "-h,--help Display usage information and exit\n";
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/**
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@ -132,6 +133,7 @@ private static Options buildOptions() {
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options.addOption("delimiter", true, "");
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options.addOption("sp", false, "");
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options.addOption("t", "temp", true, "");
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options.addOption("m", "multiThread", true, "");
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return options;
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}
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@ -185,6 +187,7 @@ public static int run(String[] args) throws Exception {
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String delimiter = cmd.getOptionValue("delimiter",
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PBImageTextWriter.DEFAULT_DELIMITER);
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String tempPath = cmd.getOptionValue("t", "");
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int threads = Integer.parseInt(cmd.getOptionValue("m", "1"));
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Configuration conf = new Configuration();
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PrintStream out = null;
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@ -227,15 +230,14 @@ public static int run(String[] args) throws Exception {
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boolean printStoragePolicy = cmd.hasOption("sp");
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try (PBImageDelimitedTextWriter writer =
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new PBImageDelimitedTextWriter(out, delimiter,
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tempPath, printStoragePolicy);
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RandomAccessFile r = new RandomAccessFile(inputFile, "r")) {
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writer.visit(r);
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tempPath, printStoragePolicy, threads, outputFile)) {
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writer.visit(inputFile);
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}
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break;
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case "DETECTCORRUPTION":
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try (PBImageCorruptionDetector detector =
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new PBImageCorruptionDetector(out, delimiter, tempPath)) {
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detector.visit(new RandomAccessFile(inputFile, "r"));
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detector.visit(inputFile);
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}
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break;
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default:
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@ -337,7 +337,7 @@ public void afterOutput() throws IOException {
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if (parentId != -1) {
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entryBuilder.setParentId(parentId);
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}
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printIfNotEmpty(entryBuilder.build());
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printIfNotEmpty(serialOutStream(), entryBuilder.build());
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}
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}
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}
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@ -146,7 +146,13 @@ public String build() {
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PBImageDelimitedTextWriter(PrintStream out, String delimiter,
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String tempPath, boolean printStoragePolicy)
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throws IOException {
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super(out, delimiter, tempPath);
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this(out, delimiter, tempPath, printStoragePolicy, 1, "-");
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}
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PBImageDelimitedTextWriter(PrintStream out, String delimiter,
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String tempPath, boolean printStoragePolicy, int threads,
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String parallelOut) throws IOException {
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super(out, delimiter, tempPath, threads, parallelOut);
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this.printStoragePolicy = printStoragePolicy;
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}
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@ -21,17 +21,25 @@
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import java.io.Closeable;
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import java.io.File;
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import java.io.FileInputStream;
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import java.io.FileOutputStream;
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import java.io.IOException;
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import java.io.InputStream;
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import java.io.PrintStream;
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import java.io.RandomAccessFile;
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import java.io.UnsupportedEncodingException;
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import java.nio.ByteBuffer;
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import java.nio.channels.FileChannel;
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import java.util.ArrayList;
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import java.util.Collections;
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import java.util.Comparator;
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import java.util.concurrent.CopyOnWriteArrayList;
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import java.util.concurrent.CountDownLatch;
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import java.util.concurrent.ExecutorService;
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import java.util.concurrent.Executors;
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import java.util.concurrent.atomic.AtomicInteger;
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import java.util.concurrent.atomic.AtomicLong;
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import java.util.HashMap;
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import java.util.Iterator;
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import java.util.LinkedHashMap;
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import java.util.List;
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import java.util.Map;
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@ -455,20 +463,22 @@ public String getParentPath(long inode) throws IOException {
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return "/";
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}
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long parent = getFromDirChildMap(inode);
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if (!dirPathCache.containsKey(parent)) {
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byte[] bytes = dirMap.get(toBytes(parent));
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if (parent != INodeId.ROOT_INODE_ID && bytes == null) {
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// The parent is an INodeReference, which is generated from snapshot.
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// For delimited oiv tool, no need to print out metadata in snapshots.
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throw PBImageTextWriter.createIgnoredSnapshotException(inode);
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byte[] bytes = dirMap.get(toBytes(parent));
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synchronized (this) {
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if (!dirPathCache.containsKey(parent)) {
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if (parent != INodeId.ROOT_INODE_ID && bytes == null) {
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// The parent is an INodeReference, which is generated from snapshot.
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// For delimited oiv tool, no need to print out metadata in snapshots.
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throw PBImageTextWriter.createIgnoredSnapshotException(inode);
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}
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String parentName = toString(bytes);
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String parentPath =
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new Path(getParentPath(parent),
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parentName.isEmpty() ? "/" : parentName).toString();
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dirPathCache.put(parent, parentPath);
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}
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String parentName = toString(bytes);
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String parentPath =
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new Path(getParentPath(parent),
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parentName.isEmpty() ? "/" : parentName).toString();
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dirPathCache.put(parent, parentPath);
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return dirPathCache.get(parent);
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}
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return dirPathCache.get(parent);
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}
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@Override
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@ -493,9 +503,12 @@ public long getParentId(long id) throws IOException {
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}
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private SerialNumberManager.StringTable stringTable;
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private PrintStream out;
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private final PrintStream out;
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private MetadataMap metadataMap = null;
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private String delimiter;
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private File filename;
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private int numThreads;
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private String parallelOutputFile;
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/**
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* Construct a PB FsImage writer to generate text file.
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@ -503,8 +516,8 @@ public long getParentId(long id) throws IOException {
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* @param tempPath the path to store metadata. If it is empty, store metadata
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* in memory instead.
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*/
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PBImageTextWriter(PrintStream out, String delimiter, String tempPath)
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throws IOException {
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PBImageTextWriter(PrintStream out, String delimiter, String tempPath,
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int numThreads, String parallelOutputFile) throws IOException {
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this.out = out;
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this.delimiter = delimiter;
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if (tempPath.isEmpty()) {
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@ -512,6 +525,17 @@ public long getParentId(long id) throws IOException {
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} else {
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metadataMap = new LevelDBMetadataMap(tempPath);
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}
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this.numThreads = numThreads;
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this.parallelOutputFile = parallelOutputFile;
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}
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PBImageTextWriter(PrintStream out, String delimiter, String tempPath)
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throws IOException {
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this(out, delimiter, tempPath, 1, "-");
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}
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protected PrintStream serialOutStream() {
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return out;
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}
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@Override
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@ -562,7 +586,9 @@ void append(StringBuffer buffer, String field) {
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*/
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abstract protected void afterOutput() throws IOException;
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public void visit(RandomAccessFile file) throws IOException {
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public void visit(String filePath) throws IOException {
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filename = new File(filePath);
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RandomAccessFile file = new RandomAccessFile(filePath, "r");
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Configuration conf = new Configuration();
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if (!FSImageUtil.checkFileFormat(file)) {
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throw new IOException("Unrecognized FSImage");
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@ -642,21 +668,122 @@ long getParentId(long id) throws IOException {
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private void output(Configuration conf, FileSummary summary,
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FileInputStream fin, ArrayList<FileSummary.Section> sections)
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throws IOException {
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ArrayList<FileSummary.Section> allINodeSubSections =
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getINodeSubSections(sections);
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if (numThreads > 1 && !parallelOutputFile.equals("-") &&
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allINodeSubSections.size() > 1) {
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outputInParallel(conf, summary, allINodeSubSections);
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} else {
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LOG.info("Serial output due to threads num: {}, parallel output file: {}, " +
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"subSections: {}.", numThreads, parallelOutputFile, allINodeSubSections.size());
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outputInSerial(conf, summary, fin, sections);
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}
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}
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private void outputInSerial(Configuration conf, FileSummary summary,
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FileInputStream fin, ArrayList<FileSummary.Section> sections)
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throws IOException {
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InputStream is;
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long startTime = Time.monotonicNow();
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out.println(getHeader());
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serialOutStream().println(getHeader());
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for (FileSummary.Section section : sections) {
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if (SectionName.fromString(section.getName()) == SectionName.INODE) {
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fin.getChannel().position(section.getOffset());
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is = FSImageUtil.wrapInputStreamForCompression(conf,
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summary.getCodec(), new BufferedInputStream(new LimitInputStream(
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fin, section.getLength())));
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outputINodes(is);
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INodeSection s = INodeSection.parseDelimitedFrom(is);
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LOG.info("Found {} INodes in the INode section", s.getNumInodes());
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int count = outputINodes(is, serialOutStream());
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LOG.info("Outputted {} INodes.", count);
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}
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}
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afterOutput();
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long timeTaken = Time.monotonicNow() - startTime;
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LOG.debug("Time to output inodes: {}ms", timeTaken);
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LOG.debug("Time to output inodes: {} ms", timeTaken);
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}
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/**
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* STEP1: Multi-threaded process sub-sections.
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* Given n (n>1) threads to process k (k>=n) sections,
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* output parsed results of each section to tmp file in order.
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* STEP2: Merge tmp files.
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*/
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private void outputInParallel(Configuration conf, FileSummary summary,
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ArrayList<FileSummary.Section> subSections)
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throws IOException {
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int nThreads = Integer.min(numThreads, subSections.size());
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LOG.info("Outputting in parallel with {} sub-sections using {} threads",
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subSections.size(), nThreads);
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final CopyOnWriteArrayList<IOException> exceptions = new CopyOnWriteArrayList<>();
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CountDownLatch latch = new CountDownLatch(subSections.size());
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ExecutorService executorService = Executors.newFixedThreadPool(nThreads);
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AtomicLong expectedINodes = new AtomicLong(0);
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AtomicLong totalParsed = new AtomicLong(0);
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String codec = summary.getCodec();
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String[] paths = new String[subSections.size()];
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for (int i = 0; i < subSections.size(); i++) {
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paths[i] = parallelOutputFile + ".tmp." + i;
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int index = i;
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executorService.submit(() -> {
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LOG.info("Output iNodes of section-{}", index);
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InputStream is = null;
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try (PrintStream outStream = new PrintStream(paths[index], "UTF-8")) {
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long startTime = Time.monotonicNow();
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is = getInputStreamForSection(subSections.get(index), codec, conf);
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if (index == 0) {
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// The first iNode section has a header which must be processed first
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INodeSection s = INodeSection.parseDelimitedFrom(is);
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expectedINodes.set(s.getNumInodes());
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}
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totalParsed.addAndGet(outputINodes(is, outStream));
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long timeTaken = Time.monotonicNow() - startTime;
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LOG.info("Time to output iNodes of section-{}: {} ms", index, timeTaken);
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} catch (Exception e) {
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exceptions.add(new IOException(e));
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} finally {
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latch.countDown();
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try {
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if (is != null) {
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is.close();
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}
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} catch (IOException ioe) {
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LOG.warn("Failed to close the input stream, ignoring", ioe);
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}
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}
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});
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}
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try {
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latch.await();
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} catch (InterruptedException e) {
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LOG.error("Interrupted waiting for countdown latch", e);
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throw new IOException(e);
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}
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executorService.shutdown();
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if (exceptions.size() != 0) {
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LOG.error("Failed to output INode sub-sections, {} exception(s) occurred.",
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exceptions.size());
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throw exceptions.get(0);
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}
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if (totalParsed.get() != expectedINodes.get()) {
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throw new IOException("Expected to parse " + expectedINodes + " in parallel, " +
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"but parsed " + totalParsed.get() + ". The image may be corrupt.");
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}
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LOG.info("Completed outputting all INode sub-sections to {} tmp files.",
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subSections.size());
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try (PrintStream ps = new PrintStream(parallelOutputFile, "UTF-8")) {
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ps.println(getHeader());
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}
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// merge tmp files
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long startTime = Time.monotonicNow();
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mergeFiles(paths, parallelOutputFile);
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long timeTaken = Time.monotonicNow() - startTime;
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LOG.info("Completed all stages. Time to merge files: {} ms", timeTaken);
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}
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protected PermissionStatus getPermission(long perm) {
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@ -763,22 +890,27 @@ protected void buildNamespace(InputStream in, List<Long> refIdList)
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LOG.info("Scanned {} INode directories to build namespace.", count);
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}
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void printIfNotEmpty(String line) {
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void printIfNotEmpty(PrintStream outStream, String line) {
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if (!line.isEmpty()) {
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out.println(line);
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outStream.println(line);
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}
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}
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private void outputINodes(InputStream in) throws IOException {
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INodeSection s = INodeSection.parseDelimitedFrom(in);
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LOG.info("Found {} INodes in the INode section", s.getNumInodes());
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private int outputINodes(InputStream in, PrintStream outStream)
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throws IOException {
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long ignored = 0;
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long ignoredSnapshots = 0;
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for (int i = 0; i < s.getNumInodes(); ++i) {
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// As the input stream is a LimitInputStream, the reading will stop when
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// EOF is encountered at the end of the stream.
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int count = 0;
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while (true) {
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INode p = INode.parseDelimitedFrom(in);
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if (p == null) {
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break;
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}
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try {
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String parentPath = metadataMap.getParentPath(p.getId());
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printIfNotEmpty(getEntry(parentPath, p));
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printIfNotEmpty(outStream, getEntry(parentPath, p));
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} catch (IOException ioe) {
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ignored++;
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if (!(ioe instanceof IgnoreSnapshotException)) {
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@ -790,16 +922,16 @@ private void outputINodes(InputStream in) throws IOException {
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}
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}
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}
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if (LOG.isDebugEnabled() && i % 100000 == 0) {
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LOG.debug("Outputted {} INodes.", i);
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count++;
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if (LOG.isDebugEnabled() && count % 100000 == 0) {
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LOG.debug("Outputted {} INodes.", count);
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}
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}
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if (ignored > 0) {
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LOG.warn("Ignored {} nodes, including {} in snapshots. Please turn on"
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+ " debug log for details", ignored, ignoredSnapshots);
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}
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LOG.info("Outputted {} INodes.", s.getNumInodes());
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return count;
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}
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private static IgnoreSnapshotException createIgnoredSnapshotException(
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@ -822,4 +954,79 @@ public int getStoragePolicy(
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}
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return HdfsConstants.BLOCK_STORAGE_POLICY_ID_UNSPECIFIED;
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}
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private ArrayList<FileSummary.Section> getINodeSubSections(
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ArrayList<FileSummary.Section> sections) {
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ArrayList<FileSummary.Section> subSections = new ArrayList<>();
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Iterator<FileSummary.Section> iter = sections.iterator();
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while (iter.hasNext()) {
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FileSummary.Section s = iter.next();
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if (SectionName.fromString(s.getName()) == SectionName.INODE_SUB) {
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subSections.add(s);
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}
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}
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return subSections;
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}
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/**
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* Given a FSImage FileSummary.section, return a LimitInput stream set to
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* the starting position of the section and limited to the section length.
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* @param section The FileSummary.Section containing the offset and length
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* @param compressionCodec The compression codec in use, if any
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* @return An InputStream for the given section
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* @throws IOException
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*/
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private InputStream getInputStreamForSection(FileSummary.Section section,
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String compressionCodec, Configuration conf)
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throws IOException {
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// channel of RandomAccessFile is not thread safe, use File
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FileInputStream fin = new FileInputStream(filename);
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try {
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FileChannel channel = fin.getChannel();
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channel.position(section.getOffset());
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InputStream in = new BufferedInputStream(new LimitInputStream(fin,
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section.getLength()));
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in = FSImageUtil.wrapInputStreamForCompression(conf,
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compressionCodec, in);
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return in;
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} catch (IOException e) {
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fin.close();
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throw e;
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}
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}
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/**
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* @param srcPaths Source files of contents to be merged
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* @param resultPath Merged file path
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* @throws IOException
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*/
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public static void mergeFiles(String[] srcPaths, String resultPath)
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throws IOException {
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if (srcPaths == null || srcPaths.length < 1) {
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LOG.warn("no source files to merge.");
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return;
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}
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File[] files = new File[srcPaths.length];
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for (int i = 0; i < srcPaths.length; i++) {
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files[i] = new File(srcPaths[i]);
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}
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File resultFile = new File(resultPath);
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try (FileChannel resultChannel =
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new FileOutputStream(resultFile, true).getChannel()) {
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for (File file : files) {
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try (FileChannel src = new FileInputStream(file).getChannel()) {
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resultChannel.transferFrom(src, resultChannel.size(), src.size());
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}
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}
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}
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for (File file : files) {
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if (!file.delete() && file.exists()) {
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LOG.warn("delete tmp file: {} returned false", file);
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}
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}
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}
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}
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@ -83,8 +83,10 @@
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import org.apache.hadoop.hdfs.server.namenode.FsImageProto;
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import org.apache.hadoop.hdfs.server.namenode.INodeFile;
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import org.apache.hadoop.hdfs.server.namenode.NameNodeLayoutVersion;
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import org.apache.hadoop.hdfs.util.MD5FileUtils;
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import org.apache.hadoop.hdfs.web.WebHdfsFileSystem;
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import org.apache.hadoop.io.IOUtils;
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import org.apache.hadoop.io.MD5Hash;
|
||||
import org.apache.hadoop.io.erasurecode.ECSchema;
|
||||
import org.apache.hadoop.io.erasurecode.ErasureCodeConstants;
|
||||
import org.apache.hadoop.net.NetUtils;
|
||||
@ -122,6 +124,7 @@
|
||||
import static org.apache.hadoop.fs.permission.FsAction.ALL;
|
||||
import static org.apache.hadoop.fs.permission.FsAction.EXECUTE;
|
||||
import static org.apache.hadoop.fs.permission.FsAction.READ_EXECUTE;
|
||||
import static org.apache.hadoop.hdfs.MiniDFSCluster.HDFS_MINIDFS_BASEDIR;
|
||||
import static org.apache.hadoop.hdfs.server.namenode.AclTestHelpers.aclEntry;
|
||||
import static org.apache.hadoop.hdfs.tools.offlineImageViewer.PBImageXmlWriter.ERASURE_CODING_SECTION_NAME;
|
||||
import static org.apache.hadoop.hdfs.tools.offlineImageViewer.PBImageXmlWriter.ERASURE_CODING_SECTION_POLICY;
|
||||
@ -186,6 +189,12 @@ public static void createOriginalFSImage() throws IOException {
|
||||
conf.setBoolean(DFSConfigKeys.DFS_NAMENODE_ACLS_ENABLED_KEY, true);
|
||||
conf.set(CommonConfigurationKeysPublic.HADOOP_SECURITY_AUTH_TO_LOCAL,
|
||||
"RULE:[2:$1@$0](JobTracker@.*FOO.COM)s/@.*//" + "DEFAULT");
|
||||
// fsimage with sub-section conf
|
||||
conf.set(DFSConfigKeys.DFS_IMAGE_PARALLEL_LOAD_KEY, "true");
|
||||
conf.set(DFSConfigKeys.DFS_IMAGE_PARALLEL_INODE_THRESHOLD_KEY, "1");
|
||||
conf.set(DFSConfigKeys.DFS_IMAGE_PARALLEL_TARGET_SECTIONS_KEY, "4");
|
||||
conf.set(DFSConfigKeys.DFS_IMAGE_PARALLEL_THREADS_KEY, "4");
|
||||
|
||||
cluster = new MiniDFSCluster.Builder(conf).numDataNodes(3).build();
|
||||
cluster.waitActive();
|
||||
DistributedFileSystem hdfs = cluster.getFileSystem();
|
||||
@ -791,6 +800,13 @@ public void testPBDelimitedWriter() throws IOException, InterruptedException {
|
||||
new FileSystemTestHelper().getTestRootDir() + "/delimited.db");
|
||||
}
|
||||
|
||||
@Test
|
||||
public void testParallelPBDelimitedWriter() throws Exception {
|
||||
testParallelPBDelimitedWriter(""); // Test in memory db.
|
||||
testParallelPBDelimitedWriter(new FileSystemTestHelper().getTestRootDir()
|
||||
+ "/parallel-delimited.db");
|
||||
}
|
||||
|
||||
@Test
|
||||
public void testCorruptionOutputEntryBuilder() throws IOException {
|
||||
PBImageCorruptionDetector corrDetector =
|
||||
@ -882,11 +898,10 @@ private void testPBDelimitedWriter(String db)
|
||||
final String DELIMITER = "\t";
|
||||
ByteArrayOutputStream output = new ByteArrayOutputStream();
|
||||
|
||||
try (PrintStream o = new PrintStream(output);
|
||||
RandomAccessFile r = new RandomAccessFile(originalFsimage, "r")) {
|
||||
try (PrintStream o = new PrintStream(output)) {
|
||||
PBImageDelimitedTextWriter v =
|
||||
new PBImageDelimitedTextWriter(o, DELIMITER, db);
|
||||
v.visit(r);
|
||||
v.visit(originalFsimage.getAbsolutePath());
|
||||
}
|
||||
|
||||
Set<String> fileNames = new HashSet<>();
|
||||
@ -920,6 +935,37 @@ private void testPBDelimitedWriter(String db)
|
||||
assertEquals(writtenFiles.keySet(), fileNames);
|
||||
}
|
||||
|
||||
private void testParallelPBDelimitedWriter(String db) throws Exception{
|
||||
String delimiter = "\t";
|
||||
int numThreads = 4;
|
||||
|
||||
File parallelDelimitedOut = new File(tempDir, "parallelDelimitedOut");
|
||||
if (OfflineImageViewerPB.run(new String[] {"-p", "Delimited",
|
||||
"-i", originalFsimage.getAbsolutePath(),
|
||||
"-o", parallelDelimitedOut.getAbsolutePath(),
|
||||
"-delimiter", delimiter,
|
||||
"-t", db,
|
||||
"-m", String.valueOf(numThreads)}) != 0) {
|
||||
throw new IOException("oiv returned failure outputting in parallel.");
|
||||
}
|
||||
MD5Hash parallelMd5 = MD5FileUtils.computeMd5ForFile(parallelDelimitedOut);
|
||||
|
||||
File serialDelimitedOut = new File(tempDir, "serialDelimitedOut");
|
||||
if (db != "") {
|
||||
db = db + "/../serial.db";
|
||||
}
|
||||
if (OfflineImageViewerPB.run(new String[] {"-p", "Delimited",
|
||||
"-i", originalFsimage.getAbsolutePath(),
|
||||
"-o", serialDelimitedOut.getAbsolutePath(),
|
||||
"-t", db,
|
||||
"-delimiter", delimiter}) != 0) {
|
||||
throw new IOException("oiv returned failure outputting in serial.");
|
||||
}
|
||||
MD5Hash serialMd5 = MD5FileUtils.computeMd5ForFile(serialDelimitedOut);
|
||||
|
||||
assertEquals(parallelMd5, serialMd5);
|
||||
}
|
||||
|
||||
private void testPBCorruptionDetector(String db)
|
||||
throws IOException, InterruptedException {
|
||||
final String delimiter = "\t";
|
||||
@ -928,7 +974,7 @@ private void testPBCorruptionDetector(String db)
|
||||
try (PrintStream o = new PrintStream(output)) {
|
||||
PBImageCorruptionDetector v =
|
||||
new PBImageCorruptionDetector(o, delimiter, db);
|
||||
v.visit(new RandomAccessFile(originalFsimage, "r"));
|
||||
v.visit(originalFsimage.getAbsolutePath());
|
||||
}
|
||||
|
||||
try (
|
||||
@ -1024,7 +1070,7 @@ private String testCorruptionDetectorRun(int runNumber,
|
||||
try (PrintStream o = new PrintStream(output)) {
|
||||
PBImageCorruptionDetector v =
|
||||
new PBImageCorruptionDetector(o, ",", db);
|
||||
v.visit(new RandomAccessFile(corruptedImage, "r"));
|
||||
v.visit(corruptedImage.getAbsolutePath());
|
||||
}
|
||||
return output.toString();
|
||||
}
|
||||
@ -1212,6 +1258,9 @@ public void testReverseXmlWithoutSnapshotDiffSection() throws Throwable {
|
||||
public void testFileDistributionCalculatorForException() throws Exception {
|
||||
File fsimageFile = null;
|
||||
Configuration conf = new Configuration();
|
||||
// Avoid using the same cluster dir to cause the global originalFsimage
|
||||
// file to be cleared.
|
||||
conf.set(HDFS_MINIDFS_BASEDIR, GenericTestUtils.getRandomizedTempPath());
|
||||
HashMap<String, FileStatus> files = Maps.newHashMap();
|
||||
|
||||
// Create a initial fsimage file
|
||||
|
||||
@ -239,7 +239,7 @@ public void testPBDelimitedWriterForAcl() throws Exception {
|
||||
try (PrintStream o = new PrintStream(output)) {
|
||||
PBImageDelimitedTextWriter v =
|
||||
new PBImageDelimitedTextWriter(o, DELIMITER, ""); // run in memory.
|
||||
v.visit(new RandomAccessFile(originalFsimage, "r"));
|
||||
v.visit(originalFsimage.getAbsolutePath());
|
||||
}
|
||||
|
||||
try (
|
||||
|
||||
Loading…
Reference in New Issue
Block a user