Github user miguno commented on the pull request: https://github.com/apache/storm/pull/275#issuecomment-93699373 My understanding is yes, you do need to ack tick tuples. See @nathanmarz [comment](https://groups.google.com/forum/#!topic/storm-user/ZEJabXT5nQA) from some time back: >> Do I need to ack tick tuples? Since they're system generated I'm think yes but I'm not sure. > > Nathan's answer: You should ack all tuples.
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