title: Trident kafka transactional spout
body: <p>I should implement a trident transactional topology. I find out that I can use kafka as spout to make my topology transactional. I find <a href="https://github.com/nathanmarz/storm-contrib/tree/master/storm-kafka" rel="nofollow">https://github.com/nathanmarz/storm-contrib/tree/master/storm-kafka</a> it's a kafka spout for storm but it's not transactional. Also I find  <a href="https://github.com/nathanmarz/storm/blob/master/storm-core/src/jvm/storm/trident/spout/IOpaquePartitionedTridentSpout.java" rel="nofollow">https://github.com/nathanmarz/storm/blob/master/storm-core/src/jvm/storm/trident/spout/IOpaquePartitionedTridentSpout.java</a> it's a trident kafka transactional spout. But I don't have  maven source for it and there is no instruction for using it. There is only instruction for using kafka storm spout. Also I need an instruction for implementing partitioned kafka. If you had an experience in implementing transactional topology, please help me! Thank you!</p>