Github user arunmahadevan commented on the pull request:
https://github.com/apache/storm/pull/1190#issuecomment-194268412
@revans2 @ptgoetz I have refactored the code and removed the auto
anchoring/acking for both stateful and non-stateful bolts in a stateful
topology. Currently state checkpointing provides at least once processing and
we could consider providing a best effort checkpointing and relax the
acking/anchoring requirements as a separate feature.
We expect IStatefulBolt implementations also to ack/anchor now and hence
passing OuputCollector in the stateful bolt's prepare method should be fine.
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