Examples with Block alluxio.master.metastore.BlockStore.Block used on opensource projects

Example 1 with Block

use of alluxio.master.metastore.BlockStore.Block in project alluxio by Alluxio.

the class DefaultBlockMaster method getJournalEntryIterator.

@Override
public CloseableIterator<JournalEntry> getJournalEntryIterator() {
    Iterator<Block> blockStoreIterator = mBlockStore.iterator();
    Iterator<JournalEntry> blockIterator = new Iterator<JournalEntry>() {

        @Override
        public boolean hasNext() {
            return blockStoreIterator.hasNext();
        }

        @Override
        public JournalEntry next() {
            if (!hasNext()) {
                throw new NoSuchElementException();
            }
            Block block = blockStoreIterator.next();
            BlockInfoEntry blockInfoEntry = BlockInfoEntry.newBuilder().setBlockId(block.getId()).setLength(block.getMeta().getLength()).build();
            return JournalEntry.newBuilder().setBlockInfo(blockInfoEntry).build();
        }

        @Override
        public void remove() {
            throw new UnsupportedOperationException("BlockMaster#Iterator#remove is not supported.");
        }
    };
    CloseableIterator<JournalEntry> closeableIterator = CloseableIterator.create(blockIterator, (whatever) -> {
        if (blockStoreIterator instanceof CloseableIterator) {
            final CloseableIterator<Block> c = (CloseableIterator<Block>) blockStoreIterator;
            c.close();
        } else {
        // no op
        }
    });
    return CloseableIterator.concat(CloseableIterator.noopCloseable(CommonUtils.singleElementIterator(getContainerIdJournalEntry())), closeableIterator);
}

Example 2 with Block

use of alluxio.master.metastore.BlockStore.Block in project alluxio by Alluxio.

the class DefaultBlockMaster method generateBlockInfo.

/**
 * Generates block info, including worker locations, for a block id.
 * This requires no locks on the {@link MasterWorkerInfo} because it is only reading
 * final fields.
 *
 * @param blockId a block id
 * @return optional block info, empty if the block does not exist
 */
private Optional<BlockInfo> generateBlockInfo(long blockId) throws UnavailableException {
    if (mSafeModeManager.isInSafeMode()) {
        throw new UnavailableException(ExceptionMessage.MASTER_IN_SAFEMODE.getMessage());
    }
    BlockMeta block;
    List<BlockLocation> blockLocations;
    try (LockResource r = lockBlock(blockId)) {
        Optional<BlockMeta> blockOpt = mBlockStore.getBlock(blockId);
        if (!blockOpt.isPresent()) {
            return Optional.empty();
        }
        block = blockOpt.get();
        blockLocations = new ArrayList<>(mBlockStore.getLocations(blockId));
    }
    // Sort the block locations by their alias ordinal in the master storage tier mapping
    Collections.sort(blockLocations, Comparator.comparingInt(o -> mGlobalStorageTierAssoc.getOrdinal(o.getTier())));
    List<alluxio.wire.BlockLocation> locations = new ArrayList<>();
    for (BlockLocation location : blockLocations) {
        MasterWorkerInfo workerInfo = mWorkers.getFirstByField(ID_INDEX, location.getWorkerId());
        if (workerInfo != null) {
            // worker metadata is intentionally not locked here because:
            // - it would be an incorrect order (correct order is lock worker first, then block)
            // - only uses getters of final variables
            locations.add(new alluxio.wire.BlockLocation().setWorkerId(location.getWorkerId()).setWorkerAddress(workerInfo.getWorkerAddress()).setTierAlias(location.getTier()).setMediumType(location.getMediumType()));
        }
    }
    return Optional.of(new BlockInfo().setBlockId(blockId).setLength(block.getLength()).setLocations(locations));
}