Our use case requires the tuples be processed in order across failures. So we have SpoutA sending data to bolt B &C and Bolt D is the last bolt that aggregates data from B & C and writes to a database.
We want to make sure that when we use tuple at a time processing OR use the Trident API, the data always gets processed in the same order as it was read by our spout. Given that between Bolt B & C there would be parallelism and intermittent failures, my question is the following - How does Storm guarantee processing order of tuples? Thanks in advance!
