Examples with GetWorkerOptions alluxio.client.block.policy.options.GetWorkerOptions used on opensource projects

Example 16 with GetWorkerOptions

use of alluxio.client.block.policy.options.GetWorkerOptions in project alluxio by Alluxio.

the class SpecificHostPolicyTest method noMatchingHost.

/**
 * Tests that no worker is chosen when the worker specified in the policy is not part of the
 * worker list.
 */
@Test
public void noMatchingHost() {
    SpecificHostPolicy policy = new SpecificHostPolicy("worker3");
    List<BlockWorkerInfo> workerInfoList = new ArrayList<>();
    workerInfoList.add(new BlockWorkerInfo(new WorkerNetAddress().setHost("worker1F").setRpcPort(PORT).setDataPort(PORT).setWebPort(PORT), Constants.GB, 0));
    workerInfoList.add(new BlockWorkerInfo(new WorkerNetAddress().setHost("worker2").setRpcPort(PORT).setDataPort(PORT).setWebPort(PORT), Constants.GB, 0));
    GetWorkerOptions options = GetWorkerOptions.defaults().setBlockWorkerInfos(workerInfoList).setBlockInfo(new BlockInfo().setLength(2 * (long) Constants.GB));
    Assert.assertNull(policy.getWorker(options));
}

Example 17 with GetWorkerOptions

use of alluxio.client.block.policy.options.GetWorkerOptions in project alluxio by Alluxio.

the class AlluxioBlockStore method getDataSourceAndType.

/**
 * Gets the data source and type of data source of a block. This method is primarily responsible
 * for determining the data source and type of data source. It takes a map of failed workers and
 * their most recently failed time and tries to update it when BlockInStream created failed,
 * attempting to avoid reading from a recently failed worker.
 *
 * @param info the info of the block to read
 * @param status the URIStatus associated with the read request
 * @param policy the policy determining the Alluxio worker location
 * @param failedWorkers the map of workers address to most recent failure time
 * @return the data source and type of data source of the block
 */
public Pair<WorkerNetAddress, BlockInStreamSource> getDataSourceAndType(BlockInfo info, URIStatus status, BlockLocationPolicy policy, Map<WorkerNetAddress, Long> failedWorkers) throws IOException {
    List<BlockLocation> locations = info.getLocations();
    List<BlockWorkerInfo> blockWorkerInfo = Collections.EMPTY_LIST;
    // Initial target workers to read the block given the block locations.
    Set<WorkerNetAddress> workerPool;
    // Note that, it is possible that the blocks have been written as UFS blocks
    if (status.isPersisted() || status.getPersistenceState().equals("TO_BE_PERSISTED")) {
        blockWorkerInfo = mContext.getCachedWorkers();
        if (blockWorkerInfo.isEmpty()) {
            throw new UnavailableException(ExceptionMessage.NO_WORKER_AVAILABLE.getMessage());
        }
        workerPool = blockWorkerInfo.stream().map(BlockWorkerInfo::getNetAddress).collect(toSet());
    } else {
        if (locations.isEmpty()) {
            blockWorkerInfo = mContext.getCachedWorkers();
            if (blockWorkerInfo.isEmpty()) {
                throw new UnavailableException(ExceptionMessage.NO_WORKER_AVAILABLE.getMessage());
            }
            throw new UnavailableException(ExceptionMessage.BLOCK_UNAVAILABLE.getMessage(info.getBlockId()));
        }
        workerPool = locations.stream().map(BlockLocation::getWorkerAddress).collect(toSet());
    }
    // Workers to read the block, after considering failed workers.
    Set<WorkerNetAddress> workers = handleFailedWorkers(workerPool, failedWorkers);
    // TODO(calvin, jianjian): Consider containing these two variables in one object
    BlockInStreamSource dataSourceType = null;
    WorkerNetAddress dataSource = null;
    locations = locations.stream().filter(location -> workers.contains(location.getWorkerAddress())).collect(toList());
    // First try to read data from Alluxio
    if (!locations.isEmpty()) {
        // TODO(calvin): Get location via a policy
        List<WorkerNetAddress> tieredLocations = locations.stream().map(location -> location.getWorkerAddress()).collect(toList());
        Collections.shuffle(tieredLocations);
        Optional<Pair<WorkerNetAddress, Boolean>> nearest = BlockLocationUtils.nearest(mTieredIdentity, tieredLocations, mContext.getClusterConf());
        if (nearest.isPresent()) {
            dataSource = nearest.get().getFirst();
            dataSourceType = nearest.get().getSecond() ? mContext.hasProcessLocalWorker() ? BlockInStreamSource.PROCESS_LOCAL : BlockInStreamSource.NODE_LOCAL : BlockInStreamSource.REMOTE;
        }
    }
    // Can't get data from Alluxio, get it from the UFS instead
    if (dataSource == null) {
        dataSourceType = BlockInStreamSource.UFS;
        Preconditions.checkNotNull(policy, PreconditionMessage.UFS_READ_LOCATION_POLICY_UNSPECIFIED);
        blockWorkerInfo = blockWorkerInfo.stream().filter(workerInfo -> workers.contains(workerInfo.getNetAddress())).collect(toList());
        GetWorkerOptions getWorkerOptions = GetWorkerOptions.defaults().setBlockInfo(new BlockInfo().setBlockId(info.getBlockId()).setLength(info.getLength()).setLocations(locations)).setBlockWorkerInfos(blockWorkerInfo);
        dataSource = policy.getWorker(getWorkerOptions);
        if (dataSource != null) {
            if (mContext.hasProcessLocalWorker() && dataSource.equals(mContext.getNodeLocalWorker())) {
                dataSourceType = BlockInStreamSource.PROCESS_LOCAL;
                LOG.debug("Create BlockInStream to read data from UFS through process local worker {}", dataSource);
            } else {
                LOG.debug("Create BlockInStream to read data from UFS through worker {} " + "(client embedded in local worker process: {}," + "client co-located with worker in different processes: {}, " + "local worker address: {})", dataSource, mContext.hasProcessLocalWorker(), mContext.hasNodeLocalWorker(), mContext.hasNodeLocalWorker() ? mContext.getNodeLocalWorker() : "N/A");
            }
        }
    }
    if (dataSource == null) {
        throw new UnavailableException(ExceptionMessage.NO_WORKER_AVAILABLE.getMessage());
    }
    return new Pair<>(dataSource, dataSourceType);
}

Example 18 with GetWorkerOptions

use of alluxio.client.block.policy.options.GetWorkerOptions in project alluxio by Alluxio.

the class ClientIOWritePolicy method getWorker.

/**
 * @param options options
 * @return the address of the worker to write to
 */
@Override
@Nullable
public WorkerNetAddress getWorker(GetWorkerOptions options) {
    Map<WorkerNetAddress, BlockWorkerInfo> eligibleWorkers = new HashMap<>();
    for (BlockWorkerInfo info : options.getBlockWorkerInfos()) {
        eligibleWorkers.put(info.getNetAddress(), info);
    }
    if (!mInitialized) {
        mWorkerInfoList = Lists.newArrayList(options.getBlockWorkerInfos());
        // sort by hashcode
        mWorkerInfoList.sort(Comparator.comparing(w -> w.getNetAddress().getHost()));
        // take the first subset
        mWorkerInfoList = mWorkerInfoList.subList(0, Math.min(MAX_WORKERS.get(), mWorkerInfoList.size()));
        if (mWorkerInfoList.size() < MAX_WORKERS.get()) {
            throw new IllegalStateException(String.format("Not enough eligible workers. expected: %d actual: %d", MAX_WORKERS.get(), mWorkerInfoList.size()));
        }
        mIndex = 0;
        mInitialized = true;
    }
    for (int i = 0; i < mWorkerInfoList.size(); i++) {
        WorkerNetAddress candidate = mWorkerInfoList.get(mIndex).getNetAddress();
        mIndex = (mIndex + 1) % mWorkerInfoList.size();
        BlockWorkerInfo workerInfo = eligibleWorkers.get(candidate);
        if (workerInfo != null && workerInfo.getCapacityBytes() >= options.getBlockInfo().getLength()) {
            return candidate;
        }
    }
    return null;
}