Distinguish between failed and timed out tuples

[Java Progarammer]

 Hi,

I have few doubts regarding how retries work in storm

1) In spouts fail method I want to distinguish between the tuples that are
failed because they timed out or they failed because one of the bolt called
fail() on them. Does storm have some inbuilt mechanism for this ?

2) When calling faill(inputTuple) in bolt if I change some thing in
inputTuple before calling fail method on it will I able to access the
modified inputTuple in spouts fail method ?

Thanks in advance.

Thanks,
Sharique.