Please help  guys, Even  After going through all the examples given i have not understood how to pass the  D-streams  from one bolt/logic to other (without writing it on HDFS etc.) just like emit function in storm .
Suppose i have topology with 3  bolts(say) 

BOLT1(parse the tweets nd emit tweet using given hashtags)=====>Bolt2(Complex logic for sentiment analysis over tweets)=======>BOLT3(submit tweets to the sql database using spark SQL)

Now  since Sentiment analysis will take most of the time ,we have to increase its level of parallelism for tuning latency. Howe to increase the levele of parallelism since the logic of topology is not clear .

Thanks & Regards,
Anshu Shukla
Indian Institute of Sciences