Each bolt/spout has 2 threads of their own.  In one thread the bolt/spout 
executes on.  A second thread then batches/routes the tuples where they need to 
go.  This may be putting them in the input queue for another bolt/spout in the 
current worker or putting them on a queue to be sent to a different worker.


- Bobby


On Wednesday, June 14, 2017, 2:13:29 PM CDT, Madhav Ancha (BLOOMBERG/ 919 3RD 
A) <[email protected]> wrote:

Which thread(s) do the tuple fanout from a source blot to the subscriber bolts 
please.

Thanks
Madhav.

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