to that Work or Derivative Works thereof, that is intentionally
      submitted to Licensor for inclusion in the Work by the copyright owner
      or by an individual or Legal Entity authorized to submit on behalf of
      the copyright owner. For the purposes of this definition, "submitted"
      means any form of electronic, verbal, or written communication sent

      to that Work or Derivative Works thereof, that is intentionally
      submitted to Licensor for inclusion in the Work by the copyright owner
      or by an individual or Legal Entity authorized to submit on behalf of
      the copyright owner. For the purposes of this definition, "submitted"
      means any form of electronic, verbal, or written communication sent

      to that Work or Derivative Works thereof, that is intentionally
      submitted to Licensor for inclusion in the Work by the copyright owner
      or by an individual or Legal Entity authorized to submit on behalf of
      the copyright owner. For the purposes of this definition, "submitted"
      means any form of electronic, verbal, or written communication sent

    CyclicBarrier barrier = new CyclicBarrier(threadCount);
    ImmutableList.Builder<Future<?>> futures = ImmutableList.builder();
    for (int i = 0; i < threadCount; i++) {
      futures.add(
          executor.submit(
              new Callable<@Nullable Void>() {
                @Override
                public @Nullable Void call() throws Exception {
                  barrier.await();

      currentFuture.set(future);
      for (Callable<?> task : allTasks) {
        @SuppressWarnings("unused") // https://errorprone.info/bugpattern/FutureReturnValueIgnored
        Future<?> possiblyIgnoredError = executor.submit(task);
      }
      awaitUnchecked(barrier);
      assertThat(future.isDone()).isTrue();
      // inspect state and ensure it is correct!
      // asserts that all get calling threads received the same value

        assertEquals("{errors.app.db.already.exists}", FessMessages.ERRORS_APP_DB_ALREADY_EXISTS);
        assertEquals("{errors.app.double.submit.request}", FessMessages.ERRORS_APP_DOUBLE_SUBMIT_REQUEST);
        assertEquals("{errors.login_error}", FessMessages.ERRORS_login_error);
        assertEquals("{errors.sso_login_error}", FessMessages.ERRORS_sso_login_error);

errors.app.db.already.deleted = 他の処理で削除されている可能性があります。再度、操作をやり直してください。
errors.app.db.already.updated = 他の処理で更新されている可能性があります。再度、操作をやり直してください。
errors.app.db.already.exists = データがすでに存在しています。再度、操作をやり直してください。
errors.app.double.submit.request = このリクエストの前に処理されている場合があります。再度、操作をやり直してください。
# _/_/_/_/_/_/_/_/_/_/_/_/_/_/_/_/_/_/_/_/_/_/_/_/_/_/_/_/_/_/_/_/_/_/_/_/_/_/_/_/_/_/_/_/
# you can define your messages here:
# e.g.
# errors.xxx = ...
# info.xxx = ...

errors.app.db.already.deleted = 다른 프로세스에 의해 삭제되었을 수 있습니다. 다시 시도하십시오.
errors.app.db.already.updated = 다른 프로세스에 의해 업데이트되었을 수 있습니다. 다시 시도하십시오.
errors.app.db.already.exists = 데이터가 이미 존재합니다. 다시 시도하십시오.
errors.app.double.submit.request = 이 요청 전에 처리되었을 수 있습니다. 다시 시도하십시오.
# _/_/_/_/_/_/_/_/_/_/_/_/_/_/_/_/_/_/_/_/_/_/_/_/_/_/_/_/_/_/_/_/_/_/_/_/_/_/_/_/_/_/_/_/
# you can define your messages here:
# e.g.
# errors.xxx = ...
# info.xxx = ...

        ExecutorService executor = Executors.newFixedThreadPool(threadCount);

        for (int i = 0; i < threadCount; i++) {
            final int threadId = i;
            executor.submit(new Runnable() {
                @Override
                public void run() {
                    try {
                        startLatch.await();
                        for (int j = 0; j < operationsPerThread; j++) {

   *
   * @throws RejectedExecutionException if the task cannot be scheduled for execution
   * @since 28.2
   */
  public static <O extends @Nullable Object> ListenableFuture<O> submit(
      Callable<O> callable, Executor executor) {
    TrustedListenableFutureTask<O> task = TrustedListenableFutureTask.create(callable);
    executor.execute(task);
    return task;
  }

  /**