Github user mfranklin commented on the pull request:
https://github.com/apache/incubator-streams/pull/15#issuecomment-43795138
LocalBuilder appears to be checking the queue sizes on components before
calling shutdown, so the only way the queues are not flushed is if shutdown is
triggered from outside of the start method. This would be due to a shutdown
hook or other external call.
The question is what is the desired behavior. If I hit CTRL-C on my
console, do I want it to flush all the remaining data or do I want it to stop?
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