Github user roshannaik commented on the issue:
https://github.com/apache/storm/pull/1693
One important thing to include in this API will be to allow users to be
explicit about how to handle errors. I don't know if any API out there does
it... so this would be unique to Storm.
In short:
Broadly speaking there are two kinds of tuple process errors that the users
need to be concerned about:
1- **Retry worthy Errors** - For instance, failure to deliver to
destination service due to connection issues.
2- **Not worth retrying** - For instance, Parsing errors due to bad data in
the tuple. These problems can jam up the pipeline if they are retried
repeatedly. Such tuples can be sent to a configurable Dead-Letter-Queue.
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