Github user miguno commented on the pull request:
https://github.com/apache/storm/pull/275#issuecomment-93690832
Since KafkaBolt is extending BaseRichBolt, I think we should perform a
`collector.ack(input)` before `return`. Tick tuples must be acked like
"normal" tuples.
```
public class KafkaBolt<K, V> extends BaseRichBolt {
public void execute(Tuple input) {
if (TupleUtils.isTick(input)) {
return; // Do not try to send ticks to Kafka
}
...
}
```
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