Github user hmcl commented on the issue:
https://github.com/apache/storm/pull/1587
@darionyaphet can you please clarify why this patch is needed? In my
understanding it shouldn't be necessary to have any logic for auto commit
interval. If one wishes to set the auto commit interval, one can do so using
the kafka properties `autocommit.interval.ms` and `autocommit.enable`. These
properties will then be passed the `KafkaConsumer`
[here](https://github.com/apache/storm/blob/master/external/storm-kafka-client/src/main/java/org/apache/storm/kafka/spout/KafkaSpout.java#L350)
The [commit
timer](https://github.com/apache/storm/blob/master/external/storm-kafka-client/src/main/java/org/apache/storm/kafka/spout/KafkaSpout.java#L111)
is only used when in non auto commit mode. The 500 is only the initial delay.
One can make this initial delay configurable, but it may not be of extreme
importance to do so.
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