Github user srdo commented on the issue:
https://github.com/apache/storm/pull/2829
Even if we change the spout to emit all the fetched records in one
`nextTuple` call, the number and size of records returned in a fetch is limited
by the `max.poll.records` KafkaConsumer setting (500 by default), as well as
the `fetch.max.bytes` setting (50MB by default). ---
