ack with only tuple message id

[Vincent Russell <vi...@gmail.com>]

Based on my current use case I am forced to keep track of all of the tuples
in memory that my Writer bolt receives and then acking when I am sure that
all of the data in my tuples is flushed to my data store (flushing in
batches is more performant).

Because of this, a question arises for me.

Is there some way to keep a reference to only the Tuples' MessageId and ack
using only that in order to keep references to less objects in memory?

I am using storm version 0.9.0.1.

Thanks,
Vincent