Return value of methods returning Future must be checked. Ignoring returned Futures suppresses exceptions thrown from the code that completes the Future.
- Has Fix?
Methods that return
java.util.concurrent.Future and its subclasses generally
indicate errors by returning a future that eventually fails.
If you don’t check the return value of these methods, you will never find out if
they threw an exception.
Nested futures can also result in missed cancellation signals or suppressed
exceptions - see
Avoiding Nested Futures
Suppress false positives by adding the suppression annotation
@SuppressWarnings("FutureReturnValueIgnored") to the enclosing element.