Examples with DeleteContext alluxio.master.file.contexts.DeleteContext used on opensource projects

Example 1 with DeleteContext

use of alluxio.master.file.contexts.DeleteContext in project alluxio by Alluxio.

the class DefaultFileSystemMaster method deleteInternal.

/**
 * Implements file deletion.
 * <p>
 * This method does not delete blocks. Instead, it returns deleted inodes so that their blocks can
 * be deleted after the inode deletion journal entry has been written. We cannot delete blocks
 * earlier because the inode deletion may fail, leaving us with inode containing deleted blocks.
 *
 * @param rpcContext the rpc context
 * @param inodePath the file {@link LockedInodePath}
 * @param deleteContext the method optitions
 */
@VisibleForTesting
public void deleteInternal(RpcContext rpcContext, LockedInodePath inodePath, DeleteContext deleteContext) throws FileDoesNotExistException, IOException, DirectoryNotEmptyException, InvalidPathException {
    Preconditions.checkState(inodePath.getLockPattern() == LockPattern.WRITE_EDGE);
    // journaled will result in an inconsistency between Alluxio and UFS.
    if (!inodePath.fullPathExists()) {
        return;
    }
    long opTimeMs = System.currentTimeMillis();
    Inode inode = inodePath.getInode();
    if (inode == null) {
        return;
    }
    boolean recursive = deleteContext.getOptions().getRecursive();
    if (inode.isDirectory() && !recursive && mInodeStore.hasChildren(inode.asDirectory())) {
        // true
        throw new DirectoryNotEmptyException(ExceptionMessage.DELETE_NONEMPTY_DIRECTORY_NONRECURSIVE, inode.getName());
    }
    if (mInodeTree.isRootId(inode.getId())) {
        // The root cannot be deleted.
        throw new InvalidPathException(ExceptionMessage.DELETE_ROOT_DIRECTORY.getMessage());
    }
    // Inodes for which deletion will be attempted
    List<Pair<AlluxioURI, LockedInodePath>> inodesToDelete = new ArrayList<>();
    // Add root of sub-tree to delete
    inodesToDelete.add(new Pair<>(inodePath.getUri(), inodePath));
    try (LockedInodePathList descendants = mInodeTree.getDescendants(inodePath)) {
        for (LockedInodePath childPath : descendants) {
            inodesToDelete.add(new Pair<>(mInodeTree.getPath(childPath.getInode()), childPath));
        }
        // Prepare to delete persisted inodes
        UfsDeleter ufsDeleter = NoopUfsDeleter.INSTANCE;
        if (!deleteContext.getOptions().getAlluxioOnly()) {
            ufsDeleter = new SafeUfsDeleter(mMountTable, mInodeStore, inodesToDelete, deleteContext.getOptions().build());
        }
        // Inodes to delete from tree after attempting to delete from UFS
        List<Pair<AlluxioURI, LockedInodePath>> revisedInodesToDelete = new ArrayList<>();
        // Inodes that are not safe for recursive deletes
        Set<Long> unsafeInodes = new HashSet<>();
        // Alluxio URIs (and the reason for failure) which could not be deleted
        List<Pair<String, String>> failedUris = new ArrayList<>();
        // file, we deal with the checkpoints and blocks as well.
        for (int i = inodesToDelete.size() - 1; i >= 0; i--) {
            rpcContext.throwIfCancelled();
            Pair<AlluxioURI, LockedInodePath> inodePairToDelete = inodesToDelete.get(i);
            AlluxioURI alluxioUriToDelete = inodePairToDelete.getFirst();
            Inode inodeToDelete = inodePairToDelete.getSecond().getInode();
            String failureReason = null;
            if (unsafeInodes.contains(inodeToDelete.getId())) {
                failureReason = ExceptionMessage.DELETE_FAILED_DIR_NONEMPTY.getMessage();
            } else if (inodeToDelete.isPersisted()) {
                // TODO(calvin): Add tests (ALLUXIO-1831)
                if (mMountTable.isMountPoint(alluxioUriToDelete)) {
                    mMountTable.delete(rpcContext, alluxioUriToDelete, true);
                } else {
                    if (!deleteContext.getOptions().getAlluxioOnly()) {
                        try {
                            checkUfsMode(alluxioUriToDelete, OperationType.WRITE);
                            // Attempt to delete node if all children were deleted successfully
                            ufsDeleter.delete(alluxioUriToDelete, inodeToDelete);
                        } catch (AccessControlException | IOException e) {
                            // In case ufs is not writable, we will still attempt to delete other entries
                            // if any as they may be from a different mount point
                            LOG.warn("Failed to delete {}: {}", alluxioUriToDelete, e.toString());
                            failureReason = e.getMessage();
                        }
                    }
                }
            }
            if (failureReason == null) {
                if (inodeToDelete.isFile()) {
                    long fileId = inodeToDelete.getId();
                    // Remove the file from the set of files to persist.
                    mPersistRequests.remove(fileId);
                    // Cancel any ongoing jobs.
                    PersistJob job = mPersistJobs.get(fileId);
                    if (job != null) {
                        job.setCancelState(PersistJob.CancelState.TO_BE_CANCELED);
                    }
                }
                revisedInodesToDelete.add(new Pair<>(alluxioUriToDelete, inodePairToDelete.getSecond()));
            } else {
                unsafeInodes.add(inodeToDelete.getId());
                // Propagate 'unsafe-ness' to parent as one of its descendants can't be deleted
                unsafeInodes.add(inodeToDelete.getParentId());
                failedUris.add(new Pair<>(alluxioUriToDelete.toString(), failureReason));
            }
        }
        if (mSyncManager.isSyncPoint(inodePath.getUri())) {
            mSyncManager.stopSyncAndJournal(RpcContext.NOOP, inodePath.getUri());
        }
        // Delete Inodes
        for (Pair<AlluxioURI, LockedInodePath> delInodePair : revisedInodesToDelete) {
            LockedInodePath tempInodePath = delInodePair.getSecond();
            MountTable.Resolution resolution = mMountTable.resolve(tempInodePath.getUri());
            mInodeTree.deleteInode(rpcContext, tempInodePath, opTimeMs);
            if (deleteContext.getOptions().getAlluxioOnly()) {
                Metrics.getUfsOpsSavedCounter(resolution.getUfsMountPointUri(), Metrics.UFSOps.DELETE_FILE).inc();
            }
        }
        if (!failedUris.isEmpty()) {
            Collection<String> messages = failedUris.stream().map(pair -> String.format("%s (%s)", pair.getFirst(), pair.getSecond())).collect(Collectors.toList());
            throw new FailedPreconditionException(ExceptionMessage.DELETE_FAILED_UFS.getMessage(StringUtils.join(messages, ", ")));
        }
    }
    Metrics.PATHS_DELETED.inc(inodesToDelete.size());
}

Example 2 with DeleteContext

use of alluxio.master.file.contexts.DeleteContext in project alluxio by Alluxio.

the class InodeSyncStream method syncExistingInodeMetadata.

/**
 * Sync inode metadata with the UFS state.
 *
 * This method expects the {@code inodePath} to already exist in the inode tree.
 */
private void syncExistingInodeMetadata(LockedInodePath inodePath, boolean skipLoad) throws AccessControlException, BlockInfoException, FileAlreadyCompletedException, FileDoesNotExistException, InvalidFileSizeException, InvalidPathException, IOException, InterruptedException {
    if (inodePath.getLockPattern() != LockPattern.WRITE_EDGE && !mLoadOnly) {
        throw new RuntimeException(String.format("syncExistingInodeMetadata was called on d%s when only locked with %s. Load metadata" + " only was not specified.", inodePath.getUri(), inodePath.getLockPattern()));
    }
    // Set to true if the given inode was deleted.
    boolean deletedInode = false;
    // whether we need to load metadata for the current path
    boolean loadMetadata = mLoadOnly;
    LOG.trace("Syncing inode metadata {}", inodePath.getUri());
    // The requested path already exists in Alluxio.
    Inode inode = inodePath.getInode();
    // initialize sync children to true if it is a listStatus call on a directory
    boolean syncChildren = inode.isDirectory() && !mIsGetFileInfo && !mDescendantType.equals(DescendantType.NONE);
    if (inodePath.getLockPattern() == LockPattern.WRITE_EDGE && !mLoadOnly) {
        if (inode instanceof InodeFile && !inode.asFile().isCompleted()) {
            // Do not sync an incomplete file, since the UFS file is expected to not exist.
            return;
        }
        Optional<Scoped> persistingLock = mInodeLockManager.tryAcquirePersistingLock(inode.getId());
        if (!persistingLock.isPresent()) {
            // written.
            return;
        }
        persistingLock.get().close();
        UfsStatus cachedStatus = null;
        boolean fileNotFound = false;
        try {
            cachedStatus = mStatusCache.getStatus(inodePath.getUri());
        } catch (FileNotFoundException e) {
            fileNotFound = true;
        }
        MountTable.Resolution resolution = mMountTable.resolve(inodePath.getUri());
        AlluxioURI ufsUri = resolution.getUri();
        try (CloseableResource<UnderFileSystem> ufsResource = resolution.acquireUfsResource()) {
            UnderFileSystem ufs = ufsResource.get();
            String ufsFingerprint;
            Fingerprint ufsFpParsed;
            // When the status is not cached and it was not due to file not found, we retry
            if (fileNotFound) {
                ufsFingerprint = Constants.INVALID_UFS_FINGERPRINT;
                ufsFpParsed = Fingerprint.parse(ufsFingerprint);
            } else if (cachedStatus == null) {
                // TODO(david): change the interface so that getFingerprint returns a parsed fingerprint
                ufsFingerprint = (String) getFromUfs(() -> ufs.getFingerprint(ufsUri.toString()));
                ufsFpParsed = Fingerprint.parse(ufsFingerprint);
            } else {
                // When the status is cached
                Pair<AccessControlList, DefaultAccessControlList> aclPair = (Pair<AccessControlList, DefaultAccessControlList>) getFromUfs(() -> ufs.getAclPair(ufsUri.toString()));
                if (aclPair == null || aclPair.getFirst() == null || !aclPair.getFirst().hasExtended()) {
                    ufsFpParsed = Fingerprint.create(ufs.getUnderFSType(), cachedStatus);
                } else {
                    ufsFpParsed = Fingerprint.create(ufs.getUnderFSType(), cachedStatus, aclPair.getFirst());
                }
                ufsFingerprint = ufsFpParsed.serialize();
            }
            boolean containsMountPoint = mMountTable.containsMountPoint(inodePath.getUri(), true);
            UfsSyncUtils.SyncPlan syncPlan = UfsSyncUtils.computeSyncPlan(inode, ufsFpParsed, containsMountPoint);
            if (syncPlan.toUpdateMetaData()) {
                // It works by calling SetAttributeInternal on the inodePath.
                if (ufsFpParsed != null && ufsFpParsed.isValid()) {
                    short mode = Short.parseShort(ufsFpParsed.getTag(Fingerprint.Tag.MODE));
                    long opTimeMs = System.currentTimeMillis();
                    SetAttributePOptions.Builder builder = SetAttributePOptions.newBuilder().setMode(new Mode(mode).toProto());
                    String owner = ufsFpParsed.getTag(Fingerprint.Tag.OWNER);
                    if (!owner.equals(Fingerprint.UNDERSCORE)) {
                        // Only set owner if not empty
                        builder.setOwner(owner);
                    }
                    String group = ufsFpParsed.getTag(Fingerprint.Tag.GROUP);
                    if (!group.equals(Fingerprint.UNDERSCORE)) {
                        // Only set group if not empty
                        builder.setGroup(group);
                    }
                    SetAttributeContext ctx = SetAttributeContext.mergeFrom(builder).setUfsFingerprint(ufsFingerprint);
                    mFsMaster.setAttributeSingleFile(mRpcContext, inodePath, false, opTimeMs, ctx);
                }
            }
            if (syncPlan.toDelete()) {
                deletedInode = true;
                try {
                    // The options for deleting.
                    DeleteContext syncDeleteContext = DeleteContext.mergeFrom(DeletePOptions.newBuilder().setRecursive(true).setAlluxioOnly(true).setUnchecked(true));
                    mFsMaster.deleteInternal(mRpcContext, inodePath, syncDeleteContext);
                } catch (DirectoryNotEmptyException | IOException e) {
                    // Should not happen, since it is an unchecked delete.
                    LOG.error("Unexpected error for unchecked delete.", e);
                }
            }
            if (syncPlan.toLoadMetadata()) {
                loadMetadata = true;
            }
            syncChildren = syncPlan.toSyncChildren();
        }
    }
    // if DescendantType.ONE we only sync children if we are syncing root of this stream
    if (mDescendantType == DescendantType.ONE) {
        syncChildren = syncChildren && mRootScheme.getPath().equals(inodePath.getUri());
    }
    Map<String, Inode> inodeChildren = new HashMap<>();
    if (syncChildren) {
        // maps children name to inode
        mInodeStore.getChildren(inode.asDirectory()).forEach(child -> inodeChildren.put(child.getName(), child));
        // Fetch and populate children into the cache
        mStatusCache.prefetchChildren(inodePath.getUri(), mMountTable);
        Collection<UfsStatus> listStatus = mStatusCache.fetchChildrenIfAbsent(mRpcContext, inodePath.getUri(), mMountTable);
        // Iterate over UFS listings and process UFS children.
        if (listStatus != null) {
            for (UfsStatus ufsChildStatus : listStatus) {
                if (!inodeChildren.containsKey(ufsChildStatus.getName()) && !PathUtils.isTemporaryFileName(ufsChildStatus.getName())) {
                    // Ufs child exists, but Alluxio child does not. Must load metadata.
                    loadMetadata = true;
                    break;
                }
            }
        }
    }
    // locked path
    if (deletedInode) {
        inodePath.removeLastInode();
    }
    // load metadata if necessary.
    if (loadMetadata && !skipLoad) {
        loadMetadataForPath(inodePath);
    }
    if (syncChildren) {
        // Iterate over Alluxio children and process persisted children.
        mInodeStore.getChildren(inode.asDirectory()).forEach(childInode -> {
            // its children.
            if (mLoadOnly && inodeChildren.containsKey(childInode.getName()) && childInode.isFile()) {
                return;
            }
            // If we're performing a recursive sync, add each child of our current Inode to the queue
            AlluxioURI child = inodePath.getUri().joinUnsafe(childInode.getName());
            mPendingPaths.add(child);
            // This asynchronously schedules a job to pre-fetch the statuses into the cache.
            if (childInode.isDirectory() && mDescendantType == DescendantType.ALL) {
                mStatusCache.prefetchChildren(child, mMountTable);
            }
        });
    }
}

Example 3 with DeleteContext

use of alluxio.master.file.contexts.DeleteContext in project alluxio by Alluxio.

the class FileSystemMasterFaultToleranceIntegrationTest method partitionTolerantDeleteFile.

@Test
public void partitionTolerantDeleteFile() throws Exception {
    // Create paths for the test.
    AlluxioURI testPath1 = new AlluxioURI("/testPath1");
    // Create context1 with unique operation id.
    DeleteContext context = DeleteContext.mergeFrom(DeletePOptions.newBuilder().setCommonOptions(FileSystemMasterCommonPOptions.newBuilder().setOperationId(new OperationId(UUID.randomUUID()).toFsProto())));
    // Create context2 with unique operation id.
    DeleteContext context2 = DeleteContext.mergeFrom(DeletePOptions.newBuilder().setCommonOptions(FileSystemMasterCommonPOptions.newBuilder().setOperationId(new OperationId(UUID.randomUUID()).toFsProto())));
    {
        // Acquire file-system-master of leading master.
        FileSystemMaster leadingFsMaster = mMultiMasterLocalAlluxioCluster.getLocalAlluxioMaster().getMasterProcess().getMaster(FileSystemMaster.class);
        // Create the path to delete.
        leadingFsMaster.createFile(testPath1, CreateFileContext.defaults());
        leadingFsMaster.completeFile(testPath1, CompleteFileContext.defaults());
        // Delete the path the first time.
        leadingFsMaster.delete(testPath1, context);
        // Delete the path the second time with the same context.
        // It should just return successfully.
        leadingFsMaster.delete(testPath1, context);
        // Delete the path again with a different context.
        // It should fail with `FileDoesNotExistException`.
        assertThrows(FileDoesNotExistException.class, () -> leadingFsMaster.delete(testPath1, context2));
    }
    // Promote standby to be a leader and reset test state.
    mMultiMasterLocalAlluxioCluster.stopLeader();
    mMultiMasterLocalAlluxioCluster.waitForNewMaster(CLUSTER_WAIT_TIMEOUT_MS);
    mAuthenticatedUser.resetUser();
    // Run partition tolerance test on the *new* leading master.
    {
        // Acquire file-system-master of leading master.
        FileSystemMaster leadingFsMaster = mMultiMasterLocalAlluxioCluster.getLocalAlluxioMaster().getMasterProcess().getMaster(FileSystemMaster.class);
        // Deleting the file on the new leader with the original operation-id should succeed.
        leadingFsMaster.delete(testPath1, context);
        // Deleting on the new leader with a different operation-id.
        // It should fail with `FileDoesNotExistException`.
        assertThrows(FileDoesNotExistException.class, () -> leadingFsMaster.delete(testPath1, context2));
    }
}

Example 4 with DeleteContext

use of alluxio.master.file.contexts.DeleteContext in project alluxio by Alluxio.

the class FileSystemMasterFaultToleranceIntegrationTest method partitionTolerantDeleteDirectory.

@Test
public void partitionTolerantDeleteDirectory() throws Exception {
    // Create paths for the test.
    AlluxioURI testPath1 = new AlluxioURI("/testPath1");
    // Create context1 with unique operation id.
    DeleteContext context = DeleteContext.mergeFrom(DeletePOptions.newBuilder().setCommonOptions(FileSystemMasterCommonPOptions.newBuilder().setOperationId(new OperationId(UUID.randomUUID()).toFsProto())));
    // Create context2 with unique operation id.
    DeleteContext context2 = DeleteContext.mergeFrom(DeletePOptions.newBuilder().setCommonOptions(FileSystemMasterCommonPOptions.newBuilder().setOperationId(new OperationId(UUID.randomUUID()).toFsProto())));
    // Run partition tolerance test on leading master.
    {
        // Acquire file-system-master of leading master.
        FileSystemMaster leadingFsMaster = mMultiMasterLocalAlluxioCluster.getLocalAlluxioMaster().getMasterProcess().getMaster(FileSystemMaster.class);
        // Create the path to delete.
        leadingFsMaster.createDirectory(testPath1, CreateDirectoryContext.defaults());
        // Delete the path the first time.
        leadingFsMaster.delete(testPath1, context);
        // Delete the path the second time with the same context.
        // It should just return successfully.
        leadingFsMaster.delete(testPath1, context);
        // Delete the path again with a different context.
        // It should fail with `FileDoesNotExistException`.
        assertThrows(FileDoesNotExistException.class, () -> leadingFsMaster.delete(testPath1, context2));
    }
    // Promote standby to be a leader and reset test state.
    mMultiMasterLocalAlluxioCluster.stopLeader();
    mMultiMasterLocalAlluxioCluster.waitForNewMaster(CLUSTER_WAIT_TIMEOUT_MS);
    mAuthenticatedUser.resetUser();
    // Run partition tolerance test on the *new* leading master.
    {
        // Acquire file-system-master of leading master.
        FileSystemMaster leadingFsMaster = mMultiMasterLocalAlluxioCluster.getLocalAlluxioMaster().getMasterProcess().getMaster(FileSystemMaster.class);
        // Deleting the path on the new leader with the original operation-id should succeed.
        leadingFsMaster.delete(testPath1, context);
        // Deleting on the new leader with a different operation-id.
        // It should fail with `FileDoesNotExistException`.
        assertThrows(FileDoesNotExistException.class, () -> leadingFsMaster.delete(testPath1, context2));
    }
}