What is the difference between OpaqueTridentKafkaSpout and TransactionalTridentKafkaSpout? When would you use one over the other?
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Uyghur Lives Matter
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Harish Shan
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It is not about which one is better, it is about your requirements.
Storm trident topologies deal with batches of tuples.
- A
Transactionalstorm spout guarantees that batches are non-overlapping and that the same batch will always contains the same set of tuples. - An
Opaquestorm spout guarantees that batches are non-overlapping, but the contents of a batch may change.
Which to use use is up to your system requirements and semantics.
Chiron
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Does your comment mean that Opaque spouts are relatively faster than Transactional ones? – Adrian Seungjin Lee Jun 15 '15 at 05:34