Database Reference
In-Depth Information
Grouping over a field in a stream
Grouping operations work in analogy to group by the operations in a relational model with
the only differential being that the ones in the Storm framework execute over a stream of
tuples from the input source.
Let's understand this more closely with the help of the following figure:
These operations in the Storm Trident run over a stream of tuples of several different parti-
tions.
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