try {
              String result = Uninterruptibles.getUninterruptibly(currentFuture.get());
              finalResults.add(result);
            } catch (ExecutionException e) {
              finalResults.add(e.getCause());
            } catch (CancellationException e) {
              finalResults.add(CancellationException.class);
            } finally {
              awaitUnchecked(barrier);
            }
          }

            try {
              String result = Uninterruptibles.getUninterruptibly(currentFuture.get());
              finalResults.add(result);
            } catch (ExecutionException e) {
              finalResults.add(e.getCause());
            } catch (CancellationException e) {
              finalResults.add(CancellationException.class);
            } finally {
              awaitUnchecked(barrier);
            }
          }