Hello!
  I have a case study where the same message (identified by an id) is
spread over a couple of processing bolts and a final bolt should act as a
barrier. This final bolt should do its job on the message ID only when all
the upfront bolts have finished their process on the message.

As sketch is bellow


Spout -> (msgid1, payload)->process bolt 1 (msgId1, payloadb1)        |
                                              ->process bolt 2(msgId1,
payloadb2)  |->final bolt(msg1,finalp)
                                              ->process bolt 3(msgId1,
payloadb3)  |

So the final bolt should not start a work on a message id till the message
was not processed by all the 3 processing bolts.
  My question are:
1. Can be these case viable for storm?
2. If the answer for the first question is yes, how can I achieve this
request?
3. Is possible to achieve this request without using trident?
I look forward for your answers.
Thanks,
  Florin

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