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

Example 1 with NoWorkerException

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

the class BlockMaster method commitBlock.

/**
   * Marks a block as committed on a specific worker.
   *
   * @param workerId the worker id committing the block
   * @param usedBytesOnTier the updated used bytes on the tier of the worker
   * @param tierAlias the alias of the storage tier where the worker is committing the block to
   * @param blockId the committing block id
   * @param length the length of the block
   * @throws NoWorkerException if the workerId is not active
   */
// TODO(binfan): check the logic is correct or not when commitBlock is a retry
public void commitBlock(long workerId, long usedBytesOnTier, String tierAlias, long blockId, long length) throws NoWorkerException {
    LOG.debug("Commit block from workerId: {}, usedBytesOnTier: {}, blockId: {}, length: {}", workerId, usedBytesOnTier, blockId, length);
    MasterWorkerInfo worker = mWorkers.getFirstByField(ID_INDEX, workerId);
    // TODO(peis): Check lost workers as well.
    if (worker == null) {
        throw new NoWorkerException(ExceptionMessage.NO_WORKER_FOUND.getMessage(workerId));
    }
    // Lock the worker metadata first.
    try (JournalContext journalContext = createJournalContext()) {
        synchronized (worker) {
            // Loop until block metadata is successfully locked.
            while (true) {
                boolean newBlock = false;
                MasterBlockInfo block = mBlocks.get(blockId);
                if (block == null) {
                    // The block metadata doesn't exist yet.
                    block = new MasterBlockInfo(blockId, length);
                    newBlock = true;
                }
                // Lock the block metadata.
                synchronized (block) {
                    boolean writeJournal = false;
                    if (newBlock) {
                        if (mBlocks.putIfAbsent(blockId, block) != null) {
                            // Another thread already inserted the metadata for this block, so start loop over.
                            continue;
                        }
                        // Successfully added the new block metadata. Append a journal entry for the new
                        // metadata.
                        writeJournal = true;
                    } else if (block.getLength() != length && block.getLength() == Constants.UNKNOWN_SIZE) {
                        // The block size was previously unknown. Update the block size with the committed
                        // size, and append a journal entry.
                        block.updateLength(length);
                        writeJournal = true;
                    }
                    if (writeJournal) {
                        BlockInfoEntry blockInfo = BlockInfoEntry.newBuilder().setBlockId(blockId).setLength(length).build();
                        appendJournalEntry(JournalEntry.newBuilder().setBlockInfo(blockInfo).build(), journalContext);
                    }
                    // At this point, both the worker and the block metadata are locked.
                    // Update the block metadata with the new worker location.
                    block.addWorker(workerId, tierAlias);
                    // This worker has this block, so it is no longer lost.
                    mLostBlocks.remove(blockId);
                    // Update the worker information for this new block.
                    // TODO(binfan): when retry commitBlock on master is expected, make sure metrics are not
                    // double counted.
                    worker.addBlock(blockId);
                    worker.updateUsedBytes(tierAlias, usedBytesOnTier);
                    worker.updateLastUpdatedTimeMs();
                }
                break;
            }
        }
    }
}

Example 2 with NoWorkerException

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

the class BlockMaster method workerRegister.

/**
   * Updates metadata when a worker registers with the master.
   *
   * @param workerId the worker id of the worker registering
   * @param storageTiers a list of storage tier aliases in order of their position in the worker's
   *        hierarchy
   * @param totalBytesOnTiers a mapping from storage tier alias to total bytes
   * @param usedBytesOnTiers a mapping from storage tier alias to the used byes
   * @param currentBlocksOnTiers a mapping from storage tier alias to a list of blocks
   * @throws NoWorkerException if workerId cannot be found
   */
public void workerRegister(long workerId, List<String> storageTiers, Map<String, Long> totalBytesOnTiers, Map<String, Long> usedBytesOnTiers, Map<String, List<Long>> currentBlocksOnTiers) throws NoWorkerException {
    MasterWorkerInfo worker = mWorkers.getFirstByField(ID_INDEX, workerId);
    if (worker == null) {
        throw new NoWorkerException(ExceptionMessage.NO_WORKER_FOUND.getMessage(workerId));
    }
    // Gather all blocks on this worker.
    HashSet<Long> blocks = new HashSet<>();
    for (List<Long> blockIds : currentBlocksOnTiers.values()) {
        blocks.addAll(blockIds);
    }
    synchronized (worker) {
        worker.updateLastUpdatedTimeMs();
        // Detect any lost blocks on this worker.
        Set<Long> removedBlocks = worker.register(mGlobalStorageTierAssoc, storageTiers, totalBytesOnTiers, usedBytesOnTiers, blocks);
        processWorkerRemovedBlocks(worker, removedBlocks);
        processWorkerAddedBlocks(worker, currentBlocksOnTiers);
    }
    LOG.info("registerWorker(): {}", worker);
}