Examples of org.apache.hadoop.fs.InvalidRequestException

org.apache.hadoop.fs.InvalidRequestException
Thrown when the user makes a malformed request, for example missing required parameters or parameters that are not valid.

            "(null)" : info.getId().toString();
    try {
      // Check for invalid IDs.
      Long id = info.getId();
      if (id == null) {
        throw new InvalidRequestException("Must supply an ID.");
      }
      CacheDirective prevEntry = getById(id);
      checkWritePermission(pc, prevEntry.getPool());


      // Fill in defaults

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    assert namesystem.hasWriteLock();
    // Remove the corresponding entry in directivesByPath.
    String path = directive.getPath();
    List<CacheDirective> directives = directivesByPath.get(path);
    if (directives == null || !directives.remove(directive)) {
      throw new InvalidRequestException("Failed to locate entry " +
          directive.getId() + " by path " + directive.getPath());
    }
    if (directives.size() == 0) {
      directivesByPath.remove(path);
    }

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    String filterPath = null;
    if (filter.getPath() != null) {
      filterPath = validatePath(filter);
    }
    if (filter.getReplication() != null) {
      throw new InvalidRequestException(
          "Filtering by replication is unsupported.");
    }


    // Querying for a single ID
    final Long id = filter.getId();
    if (id != null) {
      if (!directivesById.containsKey(id)) {
        throw new InvalidRequestException("Did not find requested id " + id);
      }
      // Since we use a tailMap on directivesById, setting prev to id-1 gets
      // us the directive with the id (if present)
      prevId = id - 1;
    }

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    try {
      CachePoolInfo.validate(info);
      String poolName = info.getPoolName();
      pool = cachePools.get(poolName);
      if (pool != null) {
        throw new InvalidRequestException("Cache pool " + poolName
            + " already exists.");
      }
      pool = CachePool.createFromInfoAndDefaults(info);
      cachePools.put(pool.getPoolName(), pool);
    } catch (IOException e) {

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    try {
      CachePoolInfo.validate(info);
      String poolName = info.getPoolName();
      CachePool pool = cachePools.get(poolName);
      if (pool == null) {
        throw new InvalidRequestException("Cache pool " + poolName
            + " does not exist.");
      }
      String prefix = "";
      if (info.getOwnerName() != null) {
        pool.setOwnerName(info.getOwnerName());

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    assert namesystem.hasWriteLock();
    try {
      CachePoolInfo.validateName(poolName);
      CachePool pool = cachePools.remove(poolName);
      if (pool == null) {
        throw new InvalidRequestException(
            "Cannot remove non-existent cache pool " + poolName);
      }
      // Remove all directives in this pool.
      Iterator<CacheDirective> iter = pool.getDirectiveList().iterator();
      while (iter.hasNext()) {

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  }


  synchronized public final Slot getSlot(int slotIdx)
      throws InvalidRequestException {
    if (!allocatedSlots.get(slotIdx)) {
      throw new InvalidRequestException(this + ": slot " + slotIdx +
          " does not exist.");
    }
    return slots[slotIdx];
  }

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   *            initialized, or is already in use.
   */
  synchronized public final Slot registerSlot(int slotIdx,
      ExtendedBlockId blockId) throws InvalidRequestException {
    if (slotIdx < 0) {
      throw new InvalidRequestException(this + ": invalid negative slot " +
          "index " + slotIdx);
    }
    if (slotIdx >= slots.length) {
      throw new InvalidRequestException(this + ": invalid slot " +
          "index " + slotIdx);
    }
    if (allocatedSlots.get(slotIdx)) {
      throw new InvalidRequestException(this + ": slot " + slotIdx +
          " is already in use.");
    }
    Slot slot = new Slot(calculateSlotAddress(slotIdx), blockId);
    if (!slot.isValid()) {
      throw new InvalidRequestException(this + ": slot " + slotIdx +
          " has not been allocated.");
    }
    slots[slotIdx] = slot;
    allocatedSlots.set(slotIdx, true);
    if (LOG.isTraceEnabled()) {

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  private static String validatePoolName(CacheDirectiveInfo directive)
      throws InvalidRequestException {
    String pool = directive.getPool();
    if (pool == null) {
      throw new InvalidRequestException("No pool specified.");
    }
    if (pool.isEmpty()) {
      throw new InvalidRequestException("Invalid empty pool name.");
    }
    return pool;
  }

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  }


  private static String validatePath(CacheDirectiveInfo directive)
      throws InvalidRequestException {
    if (directive.getPath() == null) {
      throw new InvalidRequestException("No path specified.");
    }
    String path = directive.getPath().toUri().getPath();
    if (!DFSUtil.isValidName(path)) {
      throw new InvalidRequestException("Invalid path '" + path + "'.");
    }
    return path;
  }

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