I was able to process a stream of events in batches using the partitionpersist api provided with TridentState. But now, I want to emit the processed values of this bolt and collect them as another batch of events in a following bolt.
How to create serial TridentState bolts using partitionpersist in Apache Storm?
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The
state.newValuesStream()method on your TridentState does exactly that -- it returns a stream of newly updated values from your TridentState.