Examples with LinkedHashMap java.util.LinkedHashMap used on opensource projects

Example 21 with LinkedHashMap

use of java.util.LinkedHashMap in project groovy by apache.

the class InvokerHelper method createMap.

public static Map createMap(Object[] values) {
    Map answer = new LinkedHashMap(values.length / 2);
    int i = 0;
    while (i < values.length - 1) {
        if ((values[i] instanceof SpreadMap) && (values[i + 1] instanceof Map)) {
            Map smap = (Map) values[i + 1];
            for (Object key : smap.keySet()) {
                answer.put(key, smap.get(key));
            }
            i += 2;
        } else {
            answer.put(values[i++], values[i++]);
        }
    }
    return answer;
}

Example 22 with LinkedHashMap

use of java.util.LinkedHashMap in project hadoop by apache.

the class StorageLocationChecker method check.

/**
   * Initiate a check of the supplied storage volumes and return
   * a list of failed volumes.
   *
   * StorageLocations are returned in the same order as the input
   * for compatibility with existing unit tests.
   *
   * @param conf HDFS configuration.
   * @param dataDirs list of volumes to check.
   * @return returns a list of failed volumes. Returns the empty list if
   *         there are no failed volumes.
   *
   * @throws InterruptedException if the check was interrupted.
   * @throws IOException if the number of failed volumes exceeds the
   *                     maximum allowed or if there are no good
   *                     volumes.
   */
public List<StorageLocation> check(final Configuration conf, final Collection<StorageLocation> dataDirs) throws InterruptedException, IOException {
    final HashMap<StorageLocation, Boolean> goodLocations = new LinkedHashMap<>();
    final Set<StorageLocation> failedLocations = new HashSet<>();
    final Map<StorageLocation, ListenableFuture<VolumeCheckResult>> futures = Maps.newHashMap();
    final LocalFileSystem localFS = FileSystem.getLocal(conf);
    final CheckContext context = new CheckContext(localFS, expectedPermission);
    // Start parallel disk check operations on all StorageLocations.
    for (StorageLocation location : dataDirs) {
        goodLocations.put(location, true);
        Optional<ListenableFuture<VolumeCheckResult>> olf = delegateChecker.schedule(location, context);
        if (olf.isPresent()) {
            futures.put(location, olf.get());
        }
    }
    if (maxVolumeFailuresTolerated >= dataDirs.size()) {
        throw new DiskErrorException("Invalid value configured for " + DFS_DATANODE_FAILED_VOLUMES_TOLERATED_KEY + " - " + maxVolumeFailuresTolerated + ". Value configured is >= " + "to the number of configured volumes (" + dataDirs.size() + ").");
    }
    final long checkStartTimeMs = timer.monotonicNow();
    // Retrieve the results of the disk checks.
    for (Map.Entry<StorageLocation, ListenableFuture<VolumeCheckResult>> entry : futures.entrySet()) {
        // Determine how much time we can allow for this check to complete.
        // The cumulative wait time cannot exceed maxAllowedTimeForCheck.
        final long waitSoFarMs = (timer.monotonicNow() - checkStartTimeMs);
        final long timeLeftMs = Math.max(0, maxAllowedTimeForCheckMs - waitSoFarMs);
        final StorageLocation location = entry.getKey();
        try {
            final VolumeCheckResult result = entry.getValue().get(timeLeftMs, TimeUnit.MILLISECONDS);
            switch(result) {
                case HEALTHY:
                    break;
                case DEGRADED:
                    LOG.warn("StorageLocation {} appears to be degraded.", location);
                    break;
                case FAILED:
                    LOG.warn("StorageLocation {} detected as failed.", location);
                    failedLocations.add(location);
                    goodLocations.remove(location);
                    break;
                default:
                    LOG.error("Unexpected health check result {} for StorageLocation {}", result, location);
            }
        } catch (ExecutionException | TimeoutException e) {
            LOG.warn("Exception checking StorageLocation " + location, e.getCause());
            failedLocations.add(location);
            goodLocations.remove(location);
        }
    }
    if (failedLocations.size() > maxVolumeFailuresTolerated) {
        throw new DiskErrorException("Too many failed volumes - " + "current valid volumes: " + goodLocations.size() + ", volumes configured: " + dataDirs.size() + ", volumes failed: " + failedLocations.size() + ", volume failures tolerated: " + maxVolumeFailuresTolerated);
    }
    if (goodLocations.size() == 0) {
        throw new DiskErrorException("All directories in " + DFS_DATANODE_DATA_DIR_KEY + " are invalid: " + failedLocations);
    }
    return new ArrayList<>(goodLocations.keySet());
}

Example 23 with LinkedHashMap

use of java.util.LinkedHashMap in project hadoop by apache.

the class KMSServerJSONUtils method toJSON.

@SuppressWarnings("unchecked")
public static Map toJSON(KeyProvider.KeyVersion keyVersion) {
    Map json = new LinkedHashMap();
    if (keyVersion != null) {
        json.put(KMSRESTConstants.NAME_FIELD, keyVersion.getName());
        json.put(KMSRESTConstants.VERSION_NAME_FIELD, keyVersion.getVersionName());
        json.put(KMSRESTConstants.MATERIAL_FIELD, Base64.encodeBase64URLSafeString(keyVersion.getMaterial()));
    }
    return json;
}

Example 24 with LinkedHashMap

use of java.util.LinkedHashMap in project hadoop by apache.

the class KMSServerJSONUtils method toJSON.

@SuppressWarnings("unchecked")
public static Map toJSON(String keyName, KeyProvider.Metadata meta) {
    Map json = new LinkedHashMap();
    if (meta != null) {
        json.put(KMSRESTConstants.NAME_FIELD, keyName);
        json.put(KMSRESTConstants.CIPHER_FIELD, meta.getCipher());
        json.put(KMSRESTConstants.LENGTH_FIELD, meta.getBitLength());
        json.put(KMSRESTConstants.DESCRIPTION_FIELD, meta.getDescription());
        json.put(KMSRESTConstants.ATTRIBUTES_FIELD, meta.getAttributes());
        json.put(KMSRESTConstants.CREATED_FIELD, meta.getCreated().getTime());
        json.put(KMSRESTConstants.VERSIONS_FIELD, (long) meta.getVersions());
    }
    return json;
}

Example 25 with LinkedHashMap

use of java.util.LinkedHashMap in project hadoop by apache.

the class InstrumentationService method init.

@Override
@SuppressWarnings("unchecked")
public void init() throws ServiceException {
    timersSize = getServiceConfig().getInt(CONF_TIMERS_SIZE, 10);
    counterLock = new ReentrantLock();
    timerLock = new ReentrantLock();
    variableLock = new ReentrantLock();
    samplerLock = new ReentrantLock();
    Map<String, VariableHolder> jvmVariables = new ConcurrentHashMap<String, VariableHolder>();
    counters = new ConcurrentHashMap<String, Map<String, AtomicLong>>();
    timers = new ConcurrentHashMap<String, Map<String, Timer>>();
    variables = new ConcurrentHashMap<String, Map<String, VariableHolder>>();
    samplers = new ConcurrentHashMap<String, Map<String, Sampler>>();
    samplersList = new ArrayList<Sampler>();
    all = new LinkedHashMap<String, Map<String, ?>>();
    all.put("os-env", System.getenv());
    all.put("sys-props", (Map<String, ?>) (Map) System.getProperties());
    all.put("jvm", jvmVariables);
    all.put("counters", (Map) counters);
    all.put("timers", (Map) timers);
    all.put("variables", (Map) variables);
    all.put("samplers", (Map) samplers);
    jvmVariables.put("free.memory", new VariableHolder<Long>(new Instrumentation.Variable<Long>() {

        @Override
        public Long getValue() {
            return Runtime.getRuntime().freeMemory();
        }
    }));
    jvmVariables.put("max.memory", new VariableHolder<Long>(new Instrumentation.Variable<Long>() {

        @Override
        public Long getValue() {
            return Runtime.getRuntime().maxMemory();
        }
    }));
    jvmVariables.put("total.memory", new VariableHolder<Long>(new Instrumentation.Variable<Long>() {

        @Override
        public Long getValue() {
            return Runtime.getRuntime().totalMemory();
        }
    }));
}