code: private void printBlockMasterInfo() throws IOException {
      Set<BlockMasterInfoField> blockMasterInfoFilter = new HashSet<>(Arrays
          .asList(BlockMasterInfoField.LIVE_WORKER_NUM, BlockMasterInfoField.LOST_WORKER_NUM,
              BlockMasterInfoField.CAPACITY_BYTES, BlockMasterInfoField.USED_BYTES,
              BlockMasterInfoField.FREE_BYTES, BlockMasterInfoField.CAPACITY_BYTES_ON_TIERS,
              BlockMasterInfoField.USED_BYTES_ON_TIERS));
      BlockMasterInfo blockMasterInfo = mBlockMasterClient.getBlockMasterInfo(blockMasterInfoFilter);
  
      print("Live Workers: " + blockMasterInfo.getLiveWorkerNum());
      print("Lost Workers: " + blockMasterInfo.getLostWorkerNum());
  
      print("Total Capacity: "
          + FormatUtils.getSizeFromBytes(blockMasterInfo.getCapacityBytes()));
  
      mIndentationLevel++;
      Map<String, Long> totalCapacityOnTiers = new TreeMap<>((a, b)
          -> (FileSystemAdminShellUtils.compareTierNames(a, b)));
      totalCapacityOnTiers.putAll(blockMasterInfo.getCapacityBytesOnTiers());
      for (Map.Entry<String, Long> capacityBytesTier : totalCapacityOnTiers.entrySet()) {
        print("Tier: " + capacityBytesTier.getKey()
            + "  Size: " + FormatUtils.getSizeFromBytes(capacityBytesTier.getValue()));
      }
  
      mIndentationLevel--;
      print("Used Capacity: "
          + FormatUtils.getSizeFromBytes(blockMasterInfo.getUsedBytes()));
  
      mIndentationLevel++;
      Map<String, Long> usedCapacityOnTiers = new TreeMap<>((a, b)
          -> (FileSystemAdminShellUtils.compareTierNames(a, b)));
      usedCapacityOnTiers.putAll(blockMasterInfo.getUsedBytesOnTiers());
      for (Map.Entry<String, Long> usedBytesTier: usedCapacityOnTiers.entrySet()) {
        print("Tier: " + usedBytesTier.getKey()
            + "  Size: " + FormatUtils.getSizeFromBytes(usedBytesTier.getValue()));
      }
  
      mIndentationLevel--;
      print("Free Capacity: "
          + FormatUtils.getSizeFromBytes(blockMasterInfo.getFreeBytes()));
    }
docs: Prints Alluxio block master information.