Examples of org.apache.accumulo.server.tabletserver.UniqueNameAllocator

Package org.apache.accumulo.server.tabletserver

Examples of org.apache.accumulo.server.tabletserver.UniqueNameAllocator

org.apache.accumulo.server.tabletserver.UniqueNameAllocator
Allocates unique names for an accumulo instance. The names are unique for the lifetime of the instance. This is useful for filenames because it makes caching easy.

  private static final Logger log = Logger.getLogger(TabletOperations.class);
  
  public static String createTabletDirectory(FileSystem fs, String tableDir, Text endRow) {
    String lowDirectory;
    
    UniqueNameAllocator namer = UniqueNameAllocator.getInstance();
    
    while (true) {
      try {
        if (endRow == null) {
          lowDirectory = Constants.DEFAULT_TABLET_LOCATION;
          Path lowDirectoryPath = new Path(tableDir + lowDirectory);
          if (fs.exists(lowDirectoryPath) || fs.mkdirs(lowDirectoryPath))
            return lowDirectory;
          log.warn("Failed to create " + lowDirectoryPath + " for unknown reason");
        } else {
          lowDirectory = "/" + Constants.GENERATED_TABLET_DIRECTORY_PREFIX + namer.getNextName();
          Path lowDirectoryPath = new Path(tableDir + lowDirectory);
          if (fs.exists(lowDirectoryPath))
            throw new IllegalStateException("Dir exist when it should not " + lowDirectoryPath);
          if (fs.mkdirs(lowDirectoryPath))
            return lowDirectory;

View Full Code Here

      
      fs.mkdirs(new Path(tableInfo.importDir));
      
      FileStatus[] files = fs.listStatus(new Path(tableInfo.exportDir));
      
      UniqueNameAllocator namer = UniqueNameAllocator.getInstance();
      
      mappingsWriter = new BufferedWriter(new OutputStreamWriter(fs.create(path), Constants.UTF8));
      
      for (FileStatus fileStatus : files) {
        String fileName = fileStatus.getPath().getName();
        
        String sa[] = fileName.split("\\.");
        String extension = "";
        if (sa.length > 1) {
          extension = sa[sa.length - 1];
          
          if (!FileOperations.getValidExtensions().contains(extension)) {
            continue;
          }
        } else {
          // assume it is a map file
          extension = Constants.MAPFILE_EXTENSION;
        }
        
        String newName = "I" + namer.getNextName() + "." + extension;
        
        mappingsWriter.append(fileName);
        mappingsWriter.append(':');
        mappingsWriter.append(newName);
        mappingsWriter.newLine();

View Full Code Here

  }
  
  @Override
  public Repo<Master> call(long tid, Master environment) throws Exception {
    
    UniqueNameAllocator namer = UniqueNameAllocator.getInstance();
    
    Path directory = new Path(ServerConstants.getTablesDir() + "/" + tableInfo.tableId);
    
    Path newBulkDir = new Path(directory, Constants.BULK_PREFIX + namer.getNextName());
    
    tableInfo.importDir = newBulkDir.toString();
    
    return new MapImportFileNames(tableInfo);
  }

View Full Code Here

    // the purpose of the lock file is to avoid a race
    // condition between the call to fs.exists() and
    // fs.mkdirs()... if only hadoop had a mkdir() function
    // that failed when the dir existed
    
    UniqueNameAllocator namer = UniqueNameAllocator.getInstance();
    
    while (true) {
      Path newBulkDir = new Path(directory, Constants.BULK_PREFIX + namer.getNextName());
      if (fs.exists(newBulkDir)) // sanity check
        throw new IllegalStateException("Dir exist when it should not " + newBulkDir);
      if (fs.mkdirs(newBulkDir))
        return newBulkDir;
      log.warn("Failed to create " + newBulkDir + " for unknown reason");

View Full Code Here

    MetadataTable.addBulkLoadInProgressFlag("/" + bulkDir.getParent().getName() + "/" + bulkDir.getName());
    
    Path dirPath = new Path(dir);
    FileStatus[] mapFiles = fs.listStatus(dirPath);
    
    UniqueNameAllocator namer = UniqueNameAllocator.getInstance();
    
    for (FileStatus fileStatus : mapFiles) {
      String sa[] = fileStatus.getPath().getName().split("\\.");
      String extension = "";
      if (sa.length > 1) {
        extension = sa[sa.length - 1];
        
        if (!FileOperations.getValidExtensions().contains(extension)) {
          log.warn(fileStatus.getPath() + " does not have a valid extension, ignoring");
          continue;
        }
      } else {
        // assume it is a map file
        extension = Constants.MAPFILE_EXTENSION;
      }
      
      if (extension.equals(Constants.MAPFILE_EXTENSION)) {
        if (!fileStatus.isDir()) {
          log.warn(fileStatus.getPath() + " is not a map file, ignoring");
          continue;
        }
        
        if (fileStatus.getPath().getName().equals("_logs")) {
          log.info(fileStatus.getPath() + " is probably a log directory from a map/reduce task, skipping");
          continue;
        }
        try {
          FileStatus dataStatus = fs.getFileStatus(new Path(fileStatus.getPath(), MapFile.DATA_FILE_NAME));
          if (dataStatus.isDir()) {
            log.warn(fileStatus.getPath() + " is not a map file, ignoring");
            continue;
          }
        } catch (FileNotFoundException fnfe) {
          log.warn(fileStatus.getPath() + " is not a map file, ignoring");
          continue;
        }
      }
      
      String newName = "I" + namer.getNextName() + "." + extension;
      Path newPath = new Path(bulkDir, newName);
      try {
        fs.rename(fileStatus.getPath(), newPath);
        log.debug("Moved " + fileStatus.getPath() + " to " + newPath);
      } catch (IOException E1) {

View Full Code Here

  private static final Logger log = Logger.getLogger(TabletOperations.class);
  
  public static String createTabletDirectory(FileSystem fs, String tableDir, Text endRow) {
    String lowDirectory;
    
    UniqueNameAllocator namer = UniqueNameAllocator.getInstance();
    
    while (true) {
      try {
        if (endRow == null) {
          lowDirectory = Constants.DEFAULT_TABLET_LOCATION;
          Path lowDirectoryPath = new Path(tableDir + lowDirectory);
          if (fs.exists(lowDirectoryPath) || fs.mkdirs(lowDirectoryPath))
            return lowDirectory;
          log.warn("Failed to create " + lowDirectoryPath + " for unknown reason");
        } else {
          lowDirectory = "/t-" + namer.getNextName();
          Path lowDirectoryPath = new Path(tableDir + lowDirectory);
          if (fs.exists(lowDirectoryPath))
            throw new IllegalStateException("Dir exist when it should not " + lowDirectoryPath);
          if (fs.mkdirs(lowDirectoryPath))
            return lowDirectory;

View Full Code Here

    // the purpose of the lock file is to avoid a race
    // condition between the call to fs.exists() and
    // fs.mkdirs()... if only hadoop had a mkdir() function
    // that failed when the dir existed
    
    UniqueNameAllocator namer = UniqueNameAllocator.getInstance();
    
    while (true) {
      Path newBulkDir = new Path(directory, Constants.BULK_PREFIX + namer.getNextName());
      if (fs.exists(newBulkDir)) // sanity check
        throw new IllegalStateException("Dir exist when it should not " + newBulkDir);
      if (fs.mkdirs(newBulkDir))
        return newBulkDir;
      log.warn("Failed to create " + newBulkDir + " for unknown reason");

View Full Code Here

    MetadataTable.addBulkLoadInProgressFlag("/" + bulkDir.getParent().getName() + "/" + bulkDir.getName());
    
    Path dirPath = new Path(dir);
    FileStatus[] mapFiles = fs.listStatus(dirPath);
    
    UniqueNameAllocator namer = UniqueNameAllocator.getInstance();
    
    for (FileStatus fileStatus : mapFiles) {
      String sa[] = fileStatus.getPath().getName().split("\\.");
      String extension = "";
      if (sa.length > 1) {
        extension = sa[sa.length - 1];
        
        if (!FileOperations.getValidExtensions().contains(extension)) {
          log.warn(fileStatus.getPath() + " does not have a valid extension, ignoring");
          continue;
        }
      } else {
        // assume it is a map file
        extension = Constants.MAPFILE_EXTENSION;
      }
      
      if (extension.equals(Constants.MAPFILE_EXTENSION)) {
        if (!fileStatus.isDir()) {
          log.warn(fileStatus.getPath() + " is not a map file, ignoring");
          continue;
        }
        
        if (fileStatus.getPath().getName().equals("_logs")) {
          log.info(fileStatus.getPath() + " is probably a log directory from a map/reduce task, skipping");
          continue;
        }
        try {
          FileStatus dataStatus = fs.getFileStatus(new Path(fileStatus.getPath(), MapFile.DATA_FILE_NAME));
          if (dataStatus.isDir()) {
            log.warn(fileStatus.getPath() + " is not a map file, ignoring");
            continue;
          }
        } catch (FileNotFoundException fnfe) {
          log.warn(fileStatus.getPath() + " is not a map file, ignoring");
          continue;
        }
      }
      
      String newName = "I" + namer.getNextName() + "." + extension;
      Path newPath = new Path(bulkDir, newName);
      try {
        fs.rename(fileStatus.getPath(), newPath);
        log.debug("Moved " + fileStatus.getPath() + " to " + newPath);
      } catch (IOException E1) {

View Full Code Here

  private static final Logger log = Logger.getLogger(TabletOperations.class);
  
  public static String createTabletDirectory(FileSystem fs, String tableDir, Text endRow) {
    String lowDirectory;
    
    UniqueNameAllocator namer = UniqueNameAllocator.getInstance();
    
    while (true) {
      try {
        if (endRow == null) {
          lowDirectory = Constants.DEFAULT_TABLET_LOCATION;
          Path lowDirectoryPath = new Path(tableDir + lowDirectory);
          if (fs.exists(lowDirectoryPath) || fs.mkdirs(lowDirectoryPath))
            return lowDirectory;
          log.warn("Failed to create " + lowDirectoryPath + " for unknown reason");
        } else {
          lowDirectory = "/" + Constants.GENERATED_TABLET_DIRECTORY_PREFIX + namer.getNextName();
          Path lowDirectoryPath = new Path(tableDir + lowDirectory);
          if (fs.exists(lowDirectoryPath))
            throw new IllegalStateException("Dir exist when it should not " + lowDirectoryPath);
          if (fs.mkdirs(lowDirectoryPath))
            return lowDirectory;

View Full Code Here

      
      fs.mkdirs(new Path(tableInfo.importDir));
      
      FileStatus[] files = fs.listStatus(new Path(tableInfo.exportDir));
      
      UniqueNameAllocator namer = UniqueNameAllocator.getInstance();
      
      mappingsWriter = new BufferedWriter(new OutputStreamWriter(fs.create(path)));
      
      for (FileStatus fileStatus : files) {
        String fileName = fileStatus.getPath().getName();
        
        String sa[] = fileName.split("\\.");
        String extension = "";
        if (sa.length > 1) {
          extension = sa[sa.length - 1];
          
          if (!FileOperations.getValidExtensions().contains(extension)) {
            continue;
          }
        } else {
          // assume it is a map file
          extension = Constants.MAPFILE_EXTENSION;
        }
        
        String newName = "I" + namer.getNextName() + "." + extension;
        
        mappingsWriter.append(fileName);
        mappingsWriter.append(':');
        mappingsWriter.append(newName);
        mappingsWriter.newLine();

View Full Code Here

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Related Classes of org.apache.accumulo.server.tabletserver.UniqueNameAllocator

org.apache.accumulo.server.master.tableOps.BulkImport

org.apache.accumulo.server.master.tableOps.CreateImportDir

org.apache.accumulo.server.master.tableOps.MapImportFileNames

org.apache.accumulo.server.util.TabletOperations

java.util.Random

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