nwangtw commented on issue #3198: Feature/create kafka spout
URL: https://github.com/apache/incubator-heron/pull/3198#issuecomment-474458192
 
 
   > Hi, thanks for this PR, happy to finally see a Kafka Spout implementation 
in Heron. I am planning on using this once it is merged, but I have a question. 
One major difference between this implementation and the Storm one is that 
Storm's spout allows emitting to different streams, using the 
`org.apache.storm.kafka.spout.RecordTranslator` interface. This implementation 
is missing this particular functionality, which is quite useful.
   > 
   > Is there a reason for not keeping this functionality in this Kafka Spout 
implementation? Or is there another way to achieve similar functionality (other 
than creating a map-function like bolt for this purpose)? It's really useful 
for sending data from different topics to different downstream bolts.
   
   Interesting. Is topic -> stream 1 to 1? Why not have multiple spout 
components and each one is responsible for one topic?

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