Affects: 5.3.15

The ThreadPoolTaskExecutor implements the AsyncTaskExecutor interface, so it has the method void execute(Runnable task, long startTimeout).

The implementation for that method silently ignores the timeout. It just calls the execute method without the timeout specified.

public void execute(Runnable task, long startTimeout) { execute(task); }

The Javadoc for the method says that startTimeout is intended as a hint to the executor, but if the implementation does not support it at all I think it would be better to throw a org.springframework.core.task.TaskRejectedException instead.

To just silently ignore the startTimeout gives no clue to the caller that an unsupported method is called.