Examples with FileDoesNotExistException alluxio.exception.FileDoesNotExistException used on opensource projects

Example 1 with FileDoesNotExistException

use of alluxio.exception.FileDoesNotExistException in project alluxio by Alluxio.

the class InodeTree method lockFullInodePath.

/**
   * Locks existing inodes on the path to the inode specified by an id, in the specified
   * {@link LockMode}. The target inode must exist. This may require multiple traversals of the
   * tree, so may be inefficient.
   *
   * @param id the inode id
   * @param lockMode the {@link LockMode} to lock the inodes with
   * @return the {@link LockedInodePath} representing the locked path of inodes
   * @throws FileDoesNotExistException if the target inode does not exist
   */
public LockedInodePath lockFullInodePath(long id, LockMode lockMode) throws FileDoesNotExistException {
    int count = 0;
    while (true) {
        Inode<?> inode = mInodes.getFirst(id);
        if (inode == null) {
            throw new FileDoesNotExistException(ExceptionMessage.INODE_DOES_NOT_EXIST.getMessage(id));
        }
        // Compute the path given the target inode.
        StringBuilder builder = new StringBuilder();
        computePathForInode(inode, builder);
        AlluxioURI uri = new AlluxioURI(builder.toString());
        boolean valid = false;
        LockedInodePath inodePath = null;
        try {
            inodePath = lockFullInodePath(uri, lockMode);
            if (inodePath.getInode().getId() == id) {
                // Set to true, so the path is not unlocked before returning.
                valid = true;
                return inodePath;
            }
        // The path does not end up at the target inode id. Repeat the traversal.
        } catch (InvalidPathException e) {
            // ignore and repeat the loop
            LOG.warn("Inode lookup id {} computed path {} mismatch id. Repeating.", id, uri);
        } finally {
            if (!valid && inodePath != null) {
                inodePath.close();
            }
        }
        count++;
        if (count > PATH_TRAVERSAL_RETRIES) {
            throw new FileDoesNotExistException(ExceptionMessage.INODE_DOES_NOT_EXIST_RETRIES.getMessage(id));
        }
    }
}

Example 2 with FileDoesNotExistException

use of alluxio.exception.FileDoesNotExistException in project alluxio by Alluxio.

the class InodeTree method computePathForInode.

/**
   * Appends components of the path from a given inode.
   *
   * @param inode the {@link Inode} to compute the path for
   * @param builder a {@link StringBuilder} that is updated with the path components
   * @throws FileDoesNotExistException if an inode in the path does not exist
   */
private void computePathForInode(Inode<?> inode, StringBuilder builder) throws FileDoesNotExistException {
    inode.lockRead();
    long id = inode.getId();
    long parentId = inode.getParentId();
    String name = inode.getName();
    inode.unlockRead();
    if (isRootId(id)) {
        builder.append(AlluxioURI.SEPARATOR);
    } else if (isRootId(parentId)) {
        builder.append(AlluxioURI.SEPARATOR);
        builder.append(name);
    } else {
        Inode<?> parentInode = mInodes.getFirst(parentId);
        if (parentInode == null) {
            throw new FileDoesNotExistException(ExceptionMessage.INODE_DOES_NOT_EXIST.getMessage(parentId));
        }
        computePathForInode(parentInode, builder);
        builder.append(AlluxioURI.SEPARATOR);
        builder.append(name);
    }
}

Example 3 with FileDoesNotExistException

use of alluxio.exception.FileDoesNotExistException in project alluxio by Alluxio.

the class InodeTree method createPath.

/**
   * Creates a file or directory at path.
   *
   * @param inodePath the path
   * @param options method options
   * @return a {@link CreatePathResult} representing the modified inodes and created inodes during
   *         path creation
   * @throws FileAlreadyExistsException when there is already a file at path if we want to create a
   *         directory there
   * @throws BlockInfoException when blockSizeBytes is invalid
   * @throws InvalidPathException when path is invalid, for example, (1) when there is nonexistent
   *         necessary parent directories and recursive is false, (2) when one of the necessary
   *         parent directories is actually a file
   * @throws IOException if creating the path fails
   * @throws FileDoesNotExistException if the parent of the path does not exist and the recursive
   *         option is false
   */
public CreatePathResult createPath(LockedInodePath inodePath, CreatePathOptions<?> options) throws FileAlreadyExistsException, BlockInfoException, InvalidPathException, IOException, FileDoesNotExistException {
    AlluxioURI path = inodePath.getUri();
    if (path.isRoot()) {
        String errorMessage = ExceptionMessage.FILE_ALREADY_EXISTS.getMessage(path);
        LOG.error(errorMessage);
        throw new FileAlreadyExistsException(errorMessage);
    }
    if (options instanceof CreateFileOptions) {
        CreateFileOptions fileOptions = (CreateFileOptions) options;
        if (fileOptions.getBlockSizeBytes() < 1) {
            throw new BlockInfoException("Invalid block size " + fileOptions.getBlockSizeBytes());
        }
    }
    if (!(inodePath instanceof MutableLockedInodePath)) {
        throw new InvalidPathException(ExceptionMessage.NOT_MUTABLE_INODE_PATH.getMessage(inodePath.getUri()));
    }
    LOG.debug("createPath {}", path);
    TraversalResult traversalResult = traverseToInode(inodePath, LockMode.WRITE_PARENT);
    InodeLockList lockList = traversalResult.getInodeLockList();
    MutableLockedInodePath extensibleInodePath = (MutableLockedInodePath) inodePath;
    String[] pathComponents = extensibleInodePath.getPathComponents();
    String name = path.getName();
    // pathIndex is the index into pathComponents where we start filling in the path from the inode.
    int pathIndex = extensibleInodePath.getInodes().size();
    if (pathIndex < pathComponents.length - 1) {
        // Otherwise we add the remaining path components to the list of components to create.
        if (!options.isRecursive()) {
            final String msg = new StringBuilder().append("File ").append(path).append(" creation failed. Component ").append(pathIndex).append("(").append(pathComponents[pathIndex]).append(") does not exist").toString();
            LOG.error("FileDoesNotExistException: {}", msg);
            throw new FileDoesNotExistException(msg);
        }
    }
    // The ancestor inode (parent or ancestor) of the target path.
    Inode<?> ancestorInode = extensibleInodePath.getAncestorInode();
    if (!ancestorInode.isDirectory()) {
        throw new InvalidPathException("Could not traverse to parent directory of path " + path + ". Component " + pathComponents[pathIndex - 1] + " is not a directory.");
    }
    InodeDirectory currentInodeDirectory = (InodeDirectory) ancestorInode;
    List<Inode<?>> createdInodes = new ArrayList<>();
    List<Inode<?>> modifiedInodes = new ArrayList<>();
    // These are inodes that already exist, that should be journaled as persisted.
    List<Inode<?>> existingNonPersisted = new ArrayList<>();
    // These are inodes to mark as persisted at the end of this method.
    List<Inode<?>> toPersistDirectories = new ArrayList<>();
    if (options.isPersisted()) {
        // Directory persistence will not happen until the end of this method.
        toPersistDirectories.addAll(traversalResult.getNonPersisted());
        existingNonPersisted.addAll(traversalResult.getNonPersisted());
    }
    if (pathIndex < (pathComponents.length - 1) || currentInodeDirectory.getChild(name) == null) {
        // (1) There are components in parent paths that need to be created. Or
        // (2) The last component of the path needs to be created.
        // In these two cases, the last traversed Inode will be modified.
        modifiedInodes.add(currentInodeDirectory);
    }
    // TODO(gpang): We may not have to lock the newly created inodes if the last inode is write
    // locked. This could improve performance. Further investigation is needed.
    // Fill in the ancestor directories that were missing.
    // NOTE, we set the mode of missing ancestor directories to be the default value, rather
    // than inheriting the option of the final file to create, because it may not have
    // "execute" permission.
    CreateDirectoryOptions missingDirOptions = CreateDirectoryOptions.defaults().setMountPoint(false).setPersisted(options.isPersisted()).setOwner(options.getOwner()).setGroup(options.getGroup());
    for (int k = pathIndex; k < (pathComponents.length - 1); k++) {
        InodeDirectory dir = InodeDirectory.create(mDirectoryIdGenerator.getNewDirectoryId(), currentInodeDirectory.getId(), pathComponents[k], missingDirOptions);
        // Lock the newly created inode before subsequent operations, and add it to the lock group.
        lockList.lockWriteAndCheckNameAndParent(dir, currentInodeDirectory, pathComponents[k]);
        dir.setPinned(currentInodeDirectory.isPinned());
        currentInodeDirectory.addChild(dir);
        currentInodeDirectory.setLastModificationTimeMs(options.getOperationTimeMs());
        if (options.isPersisted()) {
            toPersistDirectories.add(dir);
        }
        createdInodes.add(dir);
        mInodes.add(dir);
        currentInodeDirectory = dir;
    }
    // Create the final path component. First we need to make sure that there isn't already a file
    // here with that name. If there is an existing file that is a directory and we're creating a
    // directory, update persistence property of the directories if needed, otherwise, throw
    // FileAlreadyExistsException unless options.allowExists is true.
    Inode<?> lastInode = currentInodeDirectory.getChild(name);
    if (lastInode != null) {
        // Lock the last inode before subsequent operations, and add it to the lock group.
        lockList.lockWriteAndCheckNameAndParent(lastInode, currentInodeDirectory, name);
        if (lastInode.isDirectory() && options instanceof CreateDirectoryOptions && !lastInode.isPersisted() && options.isPersisted()) {
            // The final path component already exists and is not persisted, so it should be added
            // to the non-persisted Inodes of traversalResult.
            existingNonPersisted.add(lastInode);
            toPersistDirectories.add(lastInode);
        } else if (!lastInode.isDirectory() || !(options instanceof CreateDirectoryOptions && ((CreateDirectoryOptions) options).isAllowExists())) {
            String errorMessage = ExceptionMessage.FILE_ALREADY_EXISTS.getMessage(path);
            LOG.error(errorMessage);
            throw new FileAlreadyExistsException(errorMessage);
        }
    } else {
        if (options instanceof CreateDirectoryOptions) {
            CreateDirectoryOptions directoryOptions = (CreateDirectoryOptions) options;
            lastInode = InodeDirectory.create(mDirectoryIdGenerator.getNewDirectoryId(), currentInodeDirectory.getId(), name, directoryOptions);
            // Lock the created inode before subsequent operations, and add it to the lock group.
            lockList.lockWriteAndCheckNameAndParent(lastInode, currentInodeDirectory, name);
            if (directoryOptions.isPersisted()) {
                toPersistDirectories.add(lastInode);
            }
            lastInode.setPinned(currentInodeDirectory.isPinned());
        } else if (options instanceof CreateFileOptions) {
            CreateFileOptions fileOptions = (CreateFileOptions) options;
            lastInode = InodeFile.create(mContainerIdGenerator.getNewContainerId(), currentInodeDirectory.getId(), name, System.currentTimeMillis(), fileOptions);
            // Lock the created inode before subsequent operations, and add it to the lock group.
            lockList.lockWriteAndCheckNameAndParent(lastInode, currentInodeDirectory, name);
            if (currentInodeDirectory.isPinned()) {
                // Update set of pinned file ids.
                mPinnedInodeFileIds.add(lastInode.getId());
            }
            lastInode.setPinned(currentInodeDirectory.isPinned());
        }
        createdInodes.add(lastInode);
        mInodes.add(lastInode);
        currentInodeDirectory.addChild(lastInode);
        currentInodeDirectory.setLastModificationTimeMs(options.getOperationTimeMs());
    }
    // we mark it as persisted.
    for (Inode<?> inode : toPersistDirectories) {
        MountTable.Resolution resolution = mMountTable.resolve(getPath(inode));
        String ufsUri = resolution.getUri().toString();
        UnderFileSystem ufs = resolution.getUfs();
        MkdirsOptions mkdirsOptions = MkdirsOptions.defaults().setCreateParent(false).setOwner(inode.getOwner()).setGroup(inode.getGroup()).setMode(new Mode(inode.getMode()));
        if (ufs.isDirectory(ufsUri) || ufs.mkdirs(ufsUri, mkdirsOptions)) {
            inode.setPersistenceState(PersistenceState.PERSISTED);
        }
    }
    // Extend the inodePath with the created inodes.
    extensibleInodePath.getInodes().addAll(createdInodes);
    LOG.debug("createFile: File Created: {} parent: {}", lastInode, currentInodeDirectory);
    return new CreatePathResult(modifiedInodes, createdInodes, existingNonPersisted);
}

Example 4 with FileDoesNotExistException

use of alluxio.exception.FileDoesNotExistException in project alluxio by Alluxio.

the class LineageMaster method createLineage.

/**
   * Creates a lineage. It creates a new file for each output file.
   *
   * @param inputFiles the input files
   * @param outputFiles the output files
   * @param job the job
   * @return the id of the created lineage
   * @throws InvalidPathException if the path to the input file is invalid
   * @throws FileAlreadyExistsException if the output file already exists
   * @throws BlockInfoException if fails to create the output file
   * @throws IOException if the creation of a file fails
   * @throws AccessControlException if the permission check fails
   * @throws FileDoesNotExistException if any of the input files do not exist
   */
public synchronized long createLineage(List<AlluxioURI> inputFiles, List<AlluxioURI> outputFiles, Job job) throws InvalidPathException, FileAlreadyExistsException, BlockInfoException, IOException, AccessControlException, FileDoesNotExistException {
    List<Long> inputAlluxioFiles = new ArrayList<>();
    for (AlluxioURI inputFile : inputFiles) {
        long fileId;
        fileId = mFileSystemMaster.getFileId(inputFile);
        if (fileId == IdUtils.INVALID_FILE_ID) {
            throw new FileDoesNotExistException(ExceptionMessage.LINEAGE_INPUT_FILE_NOT_EXIST.getMessage(inputFile));
        }
        inputAlluxioFiles.add(fileId);
    }
    // create output files
    List<Long> outputAlluxioFiles = new ArrayList<>();
    for (AlluxioURI outputFile : outputFiles) {
        long fileId;
        // TODO(yupeng): delete the placeholder files if the creation fails.
        // Create the file initialized with block size 1KB as placeholder.
        CreateFileOptions options = CreateFileOptions.defaults().setRecursive(true).setBlockSizeBytes(Constants.KB);
        fileId = mFileSystemMaster.createFile(outputFile, options);
        outputAlluxioFiles.add(fileId);
    }
    LOG.info("Create lineage of input:{}, output:{}, job:{}", inputAlluxioFiles, outputAlluxioFiles, job);
    long lineageId = mLineageStore.createLineage(inputAlluxioFiles, outputAlluxioFiles, job);
    writeJournalEntry(mLineageIdGenerator.toJournalEntry());
    writeJournalEntry(mLineageStore.getLineage(lineageId).toJournalEntry());
    flushJournal();
    return lineageId;
}

Example 5 with FileDoesNotExistException

use of alluxio.exception.FileDoesNotExistException in project alluxio by Alluxio.

the class RecomputePlanner method plan.

/**
   * @return a {@link RecomputePlan} that identifies the lineages to recompute
   */
public RecomputePlan plan() {
    List<Long> lostFiles = mFileSystemMaster.getLostFiles();
    // lineage to recompute
    Set<Lineage> toRecompute = new HashSet<>();
    if (!lostFiles.isEmpty()) {
        LOG.info("report lost files {}", lostFiles);
        // report lost files
        for (long lostFile : lostFiles) {
            if (!mLineageStore.hasOutputFile(lostFile)) {
                continue;
            }
            Lineage lineage;
            try {
                lineage = mLineageStore.getLineageOfOutputFile(lostFile);
            } catch (LineageDoesNotExistException e) {
                // should not happen
                throw new IllegalStateException(e);
            }
            try {
                if (!LineageStateUtils.isPersisted(lineage, mFileSystemMaster.getFileSystemMasterView())) {
                    toRecompute.add(lineage);
                }
            } catch (FileDoesNotExistException e) {
                // should not happen
                throw new IllegalStateException(e);
            }
        }
    }
    List<Lineage> toRecomputeAfterSort = mLineageStore.sortLineageTopologically(toRecompute);
    return new RecomputePlan(toRecomputeAfterSort);
}